Update some dependencies (#392)

- Update `rand` to v0.7
- Move `crc` to `dev-dependencies`
- Remove `byteorder`
- Replace `tempdir` with `tempfile`
Signed-off-by: koushiro <koushiro.cqx@gmail.com>

Cargo.toml

@@ -23,12 +23,11 @@ valgrind = []
 
 [dependencies]
 libc = "0.2.11"
-crc = "1.2"
 
 [dependencies.librocksdb_sys]
 path = "librocksdb_sys"
 
 [dev-dependencies]
-byteorder = "1.0.0"
-rand = "0.3"
-tempdir = "0.3"
+rand = "0.7"
+crc = "1.8"
+tempfile = "3.1"

benches/cases/bench_wal.rs

@@ -12,12 +12,10 @@
 // limitations under the License.
 
 use super::rocksdb::{ColumnFamilyOptions, DBOptions, WriteOptions, DB};
-use super::tempdir::TempDir;
-
 use super::test::Bencher;
 
 fn run_bench_wal(b: &mut Bencher, name: &str, mut opts: DBOptions, wopts: WriteOptions) {
-    let path = TempDir::new(name).expect("");
+    let path = tempfile::Builder::new().prefix(name).tempdir().expect("");
     let path_str = path.path().to_str().unwrap();
     opts.create_if_missing(true);
     opts.set_max_background_jobs(6);

benches/cases/mod.rs

 extern crate test;
 
-extern crate byteorder;
 extern crate crc;
 extern crate rand;
 extern crate rocksdb;
-extern crate tempdir;
+extern crate tempfile;
 
 mod bench_wal;

librocksdb_sys/Cargo.toml

@@ -10,7 +10,7 @@ libc = "0.2.11"
 libtitan_sys = { path = "libtitan_sys" }
 
 [dev-dependencies]
-tempdir = "0.3"
+tempfile = "3.1"
 
 [features]
 default = []

librocksdb_sys/src/lib.rs

@@ -16,12 +16,13 @@
 extern crate bzip2_sys;
 extern crate libc;
 #[cfg(test)]
-extern crate tempdir;
+extern crate tempfile;
 
-use libc::{c_char, c_double, c_int, c_uchar, c_void, size_t};
 use std::ffi::CStr;
 use std::fmt;
 
+use libc::{c_char, c_double, c_int, c_uchar, c_void, size_t};
+
 // FFI-safe opaque types.
 //
 // These represent opaque RocksDB types. They are used behind pointers, but are
@@ -2118,7 +2119,10 @@ mod test {
     use libc::{self, c_void};
     use std::ffi::{CStr, CString};
     use std::{fs, ptr, slice};
-    use tempdir::TempDir;
+
+    fn tempdir_with_prefix(prefix: &str) -> tempfile::TempDir {
+        tempfile::Builder::new().prefix(prefix).tempdir().expect()
+    }
 
     #[test]
     fn internal() {
@@ -2129,8 +2133,7 @@ mod test {
             crocksdb_options_increase_parallelism(opts, 0);
             crocksdb_options_optimize_level_style_compaction(opts, 0);
             crocksdb_options_set_create_if_missing(opts, true);
-
-            let rustpath = TempDir::new("_rust_rocksdb_internaltest").expect("");
+            let rustpath = tempdir_with_prefix("_rust_rocksdb_internaltest");
             let cpath = CString::new(rustpath.path().to_str().unwrap()).unwrap();
             let cpath_ptr = cpath.as_ptr();
 
@@ -2236,7 +2239,7 @@ mod test {
             let opts = crocksdb_options_create();
             crocksdb_options_set_create_if_missing(opts, true);
 
-            let rustpath = TempDir::new("_rust_rocksdb_internaltest").expect("");
+            let rustpath = tempdir_with_prefix("_rust_rocksdb_internaltest");
             let cpath = CString::new(rustpath.path().to_str().unwrap()).unwrap();
             let cpath_ptr = cpath.as_ptr();
 
@@ -2248,7 +2251,7 @@ mod test {
             let io_options = crocksdb_options_create();
             let writer = crocksdb_sstfilewriter_create(env_opt, io_options);
 
-            let sst_dir = TempDir::new("_rust_rocksdb_internaltest").expect("");
+            let sst_dir = tempdir_with_prefix("_rust_rocksdb_internaltest");
             let sst_path = sst_dir.path().join("sstfilename");
             let c_sst_path = CString::new(sst_path.to_str().unwrap()).unwrap();
             let c_sst_path_ptr = c_sst_path.as_ptr();

src/lib.rs

@@ -18,7 +18,7 @@ extern crate libc;
 #[macro_use]
 pub extern crate librocksdb_sys;
 #[cfg(test)]
-extern crate tempdir;
+extern crate tempfile;
 
 pub use compaction_filter::CompactionFilter;
 pub use event_listener::{
@@ -68,3 +68,8 @@ mod table_properties;
 mod table_properties_collector;
 mod table_properties_collector_factory;
 mod titan;
+
+#[cfg(test)]
+fn tempdir_with_prefix(prefix: &str) -> tempfile::TempDir {
+    tempfile::Builder::new().prefix(prefix).tempdir().expect("")
+}

src/merge_operator.rs

@@ -145,10 +145,11 @@ impl<'a> Iterator for &'a mut MergeOperands {
 
 #[cfg(test)]
 mod test {
-    use super::*;
     use rocksdb::{DBVector, Writable, DB};
     use rocksdb_options::{ColumnFamilyOptions, DBOptions};
-    use tempdir::TempDir;
+
+    use super::*;
+    use crate::tempdir_with_prefix;
 
     #[allow(unused_variables)]
     #[allow(dead_code)]
@@ -175,7 +176,7 @@ mod test {
     #[allow(dead_code)]
     #[test]
     fn mergetest() {
-        let path = TempDir::new("_rust_rocksdb_mergetest").expect("");
+        let path = tempdir_with_prefix("_rust_rocksdb_mergetest");
         let mut opts = DBOptions::new();
         opts.create_if_missing(true);
         let mut cf_opts = ColumnFamilyOptions::new();

src/perf_context.rs

@@ -396,16 +396,15 @@ impl IOStatsContext {
 
 #[cfg(test)]
 mod test {
-    use super::*;
-
-    use tempdir::TempDir;
-
     use rocksdb::{SeekKey, Writable, DB};
     use rocksdb_options::{DBOptions, WriteOptions};
 
+    use super::*;
+    use crate::tempdir_with_prefix;
+
     #[test]
     fn test_perf_context() {
-        let temp_dir = TempDir::new("test_perf_context").unwrap();
+        let temp_dir = tempdir_with_prefix("test_perf_context");
         let mut opts = DBOptions::new();
         opts.create_if_missing(true);
         let db = DB::open(opts, temp_dir.path().to_str().unwrap()).unwrap();
@@ -451,7 +450,7 @@ mod test {
 
     #[test]
     fn test_iostats_context() {
-        let temp_dir = TempDir::new("test_iostats_context").unwrap();
+        let temp_dir = tempdir_with_prefix("test_iostats_context");
         let mut opts = DBOptions::new();
         opts.create_if_missing(true);
         let db = DB::open(opts, temp_dir.path().to_str().unwrap()).unwrap();

src/rocksdb.rs

@@ -2647,17 +2647,18 @@ pub fn run_ldb_tool(ldb_args: &[String], opts: &DBOptions) {
 
 #[cfg(test)]
 mod test {
-    use super::*;
     use std::fs;
     use std::path::Path;
     use std::str;
     use std::string::String;
     use std::thread;
-    use tempdir::TempDir;
+
+    use super::*;
+    use crate::tempdir_with_prefix;
 
     #[test]
     fn external() {
-        let path = TempDir::new("_rust_rocksdb_externaltest").expect("");
+        let path = tempdir_with_prefix("_rust_rocksdb_externaltest");
         let db = DB::open_default(path.path().to_str().unwrap()).unwrap();
         let p = db.put(b"k1", b"v1111");
         assert!(p.is_ok());
@@ -2670,7 +2671,7 @@ mod test {
     #[allow(unused_variables)]
     #[test]
     fn errors_do_stuff() {
-        let path = TempDir::new("_rust_rocksdb_error").expect("");
+        let path = tempdir_with_prefix("_rust_rocksdb_error");
         let path_str = path.path().to_str().unwrap();
         let db = DB::open_default(path_str).unwrap();
         let opts = DBOptions::new();
@@ -2689,7 +2690,7 @@ mod test {
 
     #[test]
     fn writebatch_works() {
-        let path = TempDir::new("_rust_rocksdb_writebacktest").expect("");
+        let path = tempdir_with_prefix("_rust_rocksdb_writebacktest");
         let db = DB::open_default(path.path().to_str().unwrap()).unwrap();
 
         // test put
@@ -2760,7 +2761,7 @@ mod test {
 
     #[test]
     fn iterator_test() {
-        let path = TempDir::new("_rust_rocksdb_iteratortest").expect("");
+        let path = tempdir_with_prefix("_rust_rocksdb_iteratortest");
 
         let db = DB::open_default(path.path().to_str().unwrap()).unwrap();
         db.put(b"k1", b"v1111").expect("");
@@ -2779,7 +2780,7 @@ mod test {
 
     #[test]
     fn approximate_size_test() {
-        let path = TempDir::new("_rust_rocksdb_iteratortest").expect("");
+        let path = tempdir_with_prefix("_rust_rocksdb_iteratortest");
         let db = DB::open_default(path.path().to_str().unwrap()).unwrap();
         for i in 1..8000 {
             db.put(
@@ -2807,7 +2808,7 @@ mod test {
 
     #[test]
     fn property_test() {
-        let path = TempDir::new("_rust_rocksdb_propertytest").expect("");
+        let path = tempdir_with_prefix("_rust_rocksdb_propertytest");
         let db = DB::open_default(path.path().to_str().unwrap()).unwrap();
         db.put(b"a1", b"v1").unwrap();
         db.flush(true).unwrap();
@@ -2822,7 +2823,7 @@ mod test {
 
     #[test]
     fn list_column_families_test() {
-        let path = TempDir::new("_rust_rocksdb_list_column_families_test").expect("");
+        let path = tempdir_with_prefix("_rust_rocksdb_list_column_families_test");
         let mut cfs = ["default", "cf1", "cf2", "cf3"];
         {
             let mut cfs_opts = vec![];
@@ -2853,13 +2854,13 @@ mod test {
         let key = b"foo";
         let value = b"bar";
 
-        let db_dir = TempDir::new("_rust_rocksdb_backuptest").unwrap();
+        let db_dir = tempdir_with_prefix("_rust_rocksdb_backuptest");
         let db = DB::open_default(db_dir.path().to_str().unwrap()).unwrap();
         let p = db.put(key, value);
         assert!(p.is_ok());
 
         // Make a backup.
-        let backup_dir = TempDir::new("_rust_rocksdb_backuptest_backup").unwrap();
+        let backup_dir = tempdir_with_prefix("_rust_rocksdb_backuptest_backup");
         let backup_engine = db.backup_at(backup_dir.path().to_str().unwrap()).unwrap();
 
         // Restore it.
@@ -2868,7 +2869,7 @@ mod test {
         ropt2.set_keep_log_files(true);
         let ropts = [ropt1, ropt2];
         for ropt in &ropts {
-            let restore_dir = TempDir::new("_rust_rocksdb_backuptest_restore").unwrap();
+            let restore_dir = tempdir_with_prefix("_rust_rocksdb_backuptest_restore");
             let restored_db = DB::restore_from(
                 &backup_engine,
                 restore_dir.path().to_str().unwrap(),
@@ -2884,7 +2885,7 @@ mod test {
 
     #[test]
     fn log_dir_test() {
-        let db_dir = TempDir::new("_rust_rocksdb_logdirtest").unwrap();
+        let db_dir = tempdir_with_prefix("_rust_rocksdb_logdirtest");
         let db_path = db_dir.path().to_str().unwrap();
         let log_path = format!("{}", Path::new(&db_path).join("log_path").display());
         fs::create_dir_all(&log_path).unwrap();
@@ -2910,7 +2911,7 @@ mod test {
 
     #[test]
     fn single_delete_test() {
-        let path = TempDir::new("_rust_rocksdb_singledeletetest").expect("");
+        let path = tempdir_with_prefix("_rust_rocksdb_singledeletetest");
         let db = DB::open_default(path.path().to_str().unwrap()).unwrap();
 
         db.put(b"a", b"v1").unwrap();
@@ -2945,7 +2946,7 @@ mod test {
 
     #[test]
     fn test_pause_bg_work() {
-        let path = TempDir::new("_rust_rocksdb_pause_bg_work").expect("");
+        let path = tempdir_with_prefix("_rust_rocksdb_pause_bg_work");
         let db = DB::open_default(path.path().to_str().unwrap()).unwrap();
         let db = Arc::new(db);
         let db1 = db.clone();
@@ -3000,7 +3001,7 @@ mod test {
 
     #[test]
     fn block_cache_usage() {
-        let path = TempDir::new("_rust_rocksdb_block_cache_usage").expect("");
+        let path = tempdir_with_prefix("_rust_rocksdb_block_cache_usage");
         let db = DB::open_default(path.path().to_str().unwrap()).unwrap();
 
         for i in 0..200 {
@@ -3018,7 +3019,7 @@ mod test {
 
     #[test]
     fn flush_cf() {
-        let path = TempDir::new("_rust_rocksdb_flush_cf").expect("");
+        let path = tempdir_with_prefix("_rust_rocksdb_flush_cf");
         let mut opts = DBOptions::new();
         opts.create_if_missing(true);
         let mut db = DB::open(opts, path.path().to_str().unwrap()).unwrap();
@@ -3058,7 +3059,7 @@ mod test {
     fn test_get_all_key_versions() {
         let mut opts = DBOptions::new();
         opts.create_if_missing(true);
-        let path = TempDir::new("_rust_rocksdb_get_all_key_version_test").expect("");
+        let path = tempdir_with_prefix("_rust_rocksdb_get_all_key_version_test");
         let db = DB::open(opts, path.path().to_str().unwrap()).unwrap();
 
         let samples = vec![
@@ -3084,7 +3085,7 @@ mod test {
     fn test_get_approximate_memtable_stats() {
         let mut opts = DBOptions::new();
         opts.create_if_missing(true);
-        let path = TempDir::new("_rust_rocksdb_get_approximate_memtable_stats").expect("");
+        let path = tempdir_with_prefix("_rust_rocksdb_get_approximate_memtable_stats");
         let db = DB::open(opts, path.path().to_str().unwrap()).unwrap();
 
         let samples = [
@@ -3114,7 +3115,7 @@ mod test {
     fn test_set_options() {
         let mut opts = DBOptions::new();
         opts.create_if_missing(true);
-        let path = TempDir::new("_rust_rocksdb_set_option").expect("");
+        let path = tempdir_with_prefix("_rust_rocksdb_set_option");
 
         let db = DB::open(opts, path.path().to_str().unwrap()).unwrap();
         let cf = db.cf_handle("default").unwrap();
@@ -3135,7 +3136,7 @@ mod test {
 
     #[test]
     fn test_load_latest_options() {
-        let path = TempDir::new("_rust_rocksdb_load_latest_option").expect("");
+        let path = tempdir_with_prefix("_rust_rocksdb_load_latest_option");
         let dbpath = path.path().to_str().unwrap().clone();
         let cf_name: &str = "cf_dynamic_level_bytes";
 
@@ -3170,7 +3171,7 @@ mod test {
 
     #[test]
     fn test_sequence_number() {
-        let path = TempDir::new("_rust_rocksdb_sequence_number").expect("");
+        let path = tempdir_with_prefix("_rust_rocksdb_sequence_number");
 
         let mut opts = DBOptions::new();
         opts.create_if_missing(true);
@@ -3188,7 +3189,7 @@ mod test {
 
     #[test]
     fn test_map_property() {
-        let path = TempDir::new("_rust_rocksdb_get_map_property").expect("");
+        let path = tempdir_with_prefix("_rust_rocksdb_get_map_property");
         let dbpath = path.path().to_str().unwrap().clone();
 
         let mut opts = DBOptions::new();

tests/cases/mod.rs

-extern crate byteorder;
-extern crate crc;
-extern crate rand;
-extern crate rocksdb;
-extern crate tempdir;
-
 mod test_column_family;
 mod test_compact_range;
 mod test_compaction_filter;
@@ -25,3 +19,7 @@ mod test_statistics;
 mod test_table_properties;
 mod test_titan;
 mod test_ttl;
+
+fn tempdir_with_prefix(prefix: &str) -> tempfile::TempDir {
+    tempfile::Builder::new().prefix(prefix).tempdir().expect("")
+}

tests/cases/test_column_family.rs

@@ -14,11 +14,12 @@
 //
 
 use rocksdb::{ColumnFamilyOptions, DBOptions, MergeOperands, Writable, DB};
-use tempdir::TempDir;
+
+use super::tempdir_with_prefix;
 
 #[test]
 pub fn test_column_family() {
-    let path = TempDir::new("_rust_rocksdb_cftest").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_cftest");
     let path_str = path.path().to_str().unwrap();
 
     // should be able to create column families

tests/cases/test_compact_range.rs

@@ -15,11 +15,12 @@ use rocksdb::{
     ColumnFamilyOptions, CompactOptions, DBBottommostLevelCompaction, DBOptions, Range, Writable,
     DB,
 };
-use tempdir::TempDir;
+
+use super::tempdir_with_prefix;
 
 #[test]
 fn test_compact_range() {
-    let path = TempDir::new("_rust_rocksdb_test_compact_range").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_compact_range");
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
     let db = DB::open(opts, path.path().to_str().unwrap()).unwrap();
@@ -50,7 +51,7 @@ fn test_compact_range() {
 
 #[test]
 fn test_compact_range_change_level() {
-    let path = TempDir::new("_rust_rocksdb_test_compact_range_change_level").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_compact_range_change_level");
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
     let mut cf_opts = ColumnFamilyOptions::new();
@@ -85,7 +86,7 @@ fn test_compact_range_change_level() {
 
 #[test]
 fn test_compact_range_bottommost_level_compaction() {
-    let path = TempDir::new("test_compact_range_bottommost_level_compaction").expect("");
+    let path = tempdir_with_prefix("test_compact_range_bottommost_level_compaction");
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
 

tests/cases/test_compaction_filter.rs

@@ -11,10 +11,12 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-use rocksdb::{ColumnFamilyOptions, CompactionFilter, DBOptions, Writable, DB};
 use std::sync::atomic::{AtomicBool, Ordering};
 use std::sync::{Arc, RwLock};
-use tempdir::TempDir;
+
+use rocksdb::{ColumnFamilyOptions, CompactionFilter, DBOptions, Writable, DB};
+
+use super::tempdir_with_prefix;
 
 struct Filter {
     drop_called: Arc<AtomicBool>,
@@ -39,7 +41,7 @@ impl Drop for Filter {
 
 #[test]
 fn test_compaction_filter() {
-    let path = TempDir::new("_rust_rocksdb_writebacktest").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_writebacktest");
     let mut cf_opts = ColumnFamilyOptions::new();
     let drop_called = Arc::new(AtomicBool::new(false));
     let filtered_kvs = Arc::new(RwLock::new(vec![]));

tests/cases/test_compression.rs

@@ -12,12 +12,13 @@
 // limitations under the License.
 
 use rocksdb::{ColumnFamilyOptions, DBCompressionType, DBOptions, DB};
-use tempdir::TempDir;
+
+use super::tempdir_with_prefix;
 
 #[test]
 // Make sure all compression types are supported.
 fn test_compression() {
-    let path = TempDir::new("_rust_rocksdb_test_metadata").unwrap();
+    let path = tempdir_with_prefix("_rust_rocksdb_test_metadata");
     let compression_types = [
         DBCompressionType::Snappy,
         DBCompressionType::Zlib,

tests/cases/test_delete_files_in_range.rs

@@ -13,9 +13,10 @@
 
 use std::ops;
 
-use rand::{self, Rng};
+use rand::{self, RngCore};
 use rocksdb::*;
-use tempdir::TempDir;
+
+use super::tempdir_with_prefix;
 
 fn initial_data(path: &str) -> DB {
     let mut opts = DBOptions::new();
@@ -54,7 +55,7 @@ fn generate_file_bottom_level(db: &DB, handle: &CFHandle, range: ops::Range<u32>
 
 #[test]
 fn test_delete_files_in_range_with_iter() {
-    let path = TempDir::new("_rust_rocksdb_test_delete_files_in_range_with_iter").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_delete_files_in_range_with_iter");
     let path_str = path.path().to_str().unwrap();
     let db = initial_data(path_str);
 
@@ -77,7 +78,7 @@ fn test_delete_files_in_range_with_iter() {
 
 #[test]
 fn test_delete_files_in_range_with_snap() {
-    let path = TempDir::new("_rust_rocksdb_test_delete_files_in_range_with_snap").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_delete_files_in_range_with_snap");
     let path_str = path.path().to_str().unwrap();
     let db = initial_data(path_str);
 
@@ -103,7 +104,7 @@ fn test_delete_files_in_range_with_snap() {
 #[test]
 fn test_delete_files_in_range_with_delete_range() {
     // Regression test for https://github.com/facebook/rocksdb/issues/2833.
-    let path = TempDir::new("_rocksdb_test_delete_files_in_range_with_delete_range").expect("");
+    let path = tempdir_with_prefix("_rocksdb_test_delete_files_in_range_with_delete_range");
     let path_str = path.path().to_str().unwrap();
 
     let sst_size = 1 << 10;
@@ -168,7 +169,7 @@ fn test_delete_files_in_range_with_delete_range() {
 
 #[test]
 fn test_delete_files_in_ranges() {
-    let path = TempDir::new("_rust_rocksdb_test_delete_files_in_multi_ranges").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_delete_files_in_multi_ranges");
     let path_str = path.path().to_str().unwrap();
     let db = initial_data(path_str);
 

tests/cases/test_delete_range.rs

@@ -11,10 +11,12 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+use std::fs;
+
 use crc::crc32::{self, Digest, Hasher32};
 use rocksdb::*;
-use std::fs;
-use tempdir::TempDir;
+
+use super::tempdir_with_prefix;
 
 fn gen_sst(opt: ColumnFamilyOptions, cf: Option<&CFHandle>, path: &str) {
     let _ = fs::remove_file(path);
@@ -79,7 +81,7 @@ fn gen_crc32_from_db_in_range(db: &DB, start_key: &[u8], end_key: &[u8]) -> u32
 
 #[test]
 fn test_delete_range_case_1() {
-    let path = TempDir::new("_rust_rocksdb_test_delete_range_case_1").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_delete_range_case_1");
     let path_str = path.path().to_str().unwrap();
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
@@ -96,7 +98,7 @@ fn test_delete_range_case_1() {
     }
     let before = gen_crc32_from_db(&db);
 
-    let gen_path = TempDir::new("_rust_rocksdb_case_1_ingest_sst_gen").expect("");
+    let gen_path = tempdir_with_prefix("_rust_rocksdb_case_1_ingest_sst_gen");
     let test_sstfile = gen_path.path().join("test_sst_file");
     let test_sstfile_str = test_sstfile.to_str().unwrap();
     let ingest_opt = IngestExternalFileOptions::new();
@@ -140,7 +142,7 @@ fn test_delete_range_case_1() {
 
 #[test]
 fn test_delete_range_case_2() {
-    let path = TempDir::new("_rust_rocksdb_test_delete_range_case_2_1").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_delete_range_case_2_1");
     let path_str = path.path().to_str().unwrap();
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
@@ -157,7 +159,7 @@ fn test_delete_range_case_2() {
     }
     let before = gen_crc32_from_db(&db);
 
-    let gen_path = TempDir::new("_rust_rocksdb_case_2_ingest_sst_gen").expect("");
+    let gen_path = tempdir_with_prefix("_rust_rocksdb_case_2_ingest_sst_gen");
     let test_sstfile = gen_path.path().join("test_sst_file");
     let test_sstfile_str = test_sstfile.to_str().unwrap();
     let ingest_opt = IngestExternalFileOptions::new();
@@ -182,7 +184,7 @@ fn test_delete_range_case_2() {
         ],
     );
 
-    let path = TempDir::new("_rust_rocksdb_test_delete_range_case_2_2").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_delete_range_case_2_2");
     let path_str = path.path().to_str().unwrap();
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
@@ -207,7 +209,7 @@ fn test_delete_range_case_2() {
 
 #[test]
 fn test_delete_range_case_3() {
-    let path = TempDir::new("_rust_rocksdb_test_delete_range_case_3").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_delete_range_case_3");
     let path_str = path.path().to_str().unwrap();
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
@@ -239,7 +241,7 @@ fn test_delete_range_case_3() {
         ],
     );
 
-    let path2 = TempDir::new("_rust_rocksdb_test_delete_range_case_3_2").expect("");
+    let path2 = tempdir_with_prefix("_rust_rocksdb_test_delete_range_case_3_2");
     let path_str2 = path2.path().to_str().unwrap();
     let mut opts2 = DBOptions::new();
     opts2.create_if_missing(true);
@@ -251,7 +253,7 @@ fn test_delete_range_case_3() {
         assert_eq!(v, &*db2.get(k).unwrap().unwrap());
     }
 
-    let gen_path = TempDir::new("_rust_rocksdb_case_3_ingest_sst_gen").expect("");
+    let gen_path = tempdir_with_prefix("_rust_rocksdb_case_3_ingest_sst_gen");
     let test_sstfile = gen_path.path().join("test_sst_file");
     let test_sstfile_str = test_sstfile.to_str().unwrap();
     let ingest_opt = IngestExternalFileOptions::new();
@@ -284,7 +286,7 @@ fn test_delete_range_case_3() {
 
 #[test]
 fn test_delete_range_case_4() {
-    let path = TempDir::new("_rust_rocksdb_test_delete_range_case_4").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_delete_range_case_4");
     let path_str = path.path().to_str().unwrap();
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
@@ -316,7 +318,7 @@ fn test_delete_range_case_4() {
         ],
     );
 
-    let path = TempDir::new("_rust_rocksdb_test_delete_range_case_4_2").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_delete_range_case_4_2");
     let path_str = path.path().to_str().unwrap();
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
@@ -328,7 +330,7 @@ fn test_delete_range_case_4() {
         assert_eq!(v, &*db2.get(k).unwrap().unwrap());
     }
 
-    let gen_path = TempDir::new("_rust_rocksdb_case_4_ingest_sst_gen").expect("");
+    let gen_path = tempdir_with_prefix("_rust_rocksdb_case_4_ingest_sst_gen");
     let test_sstfile = gen_path.path().join("test_sst_file");
     let test_sstfile_str = test_sstfile.to_str().unwrap();
     let ingest_opt = IngestExternalFileOptions::new();
@@ -361,7 +363,7 @@ fn test_delete_range_case_4() {
 
 #[test]
 fn test_delete_range_case_5() {
-    let path = TempDir::new("_rust_rocksdb_test_delete_range_case_5").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_delete_range_case_5");
     let path_str = path.path().to_str().unwrap();
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
@@ -392,7 +394,7 @@ fn test_delete_range_case_5() {
         ],
     );
 
-    let path = TempDir::new("_rust_rocksdb_test_delete_range_case_5_2").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_delete_range_case_5_2");
     let path_str = path.path().to_str().unwrap();
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
@@ -405,7 +407,7 @@ fn test_delete_range_case_5() {
     }
     let before = gen_crc32_from_db(&db2);
 
-    let gen_path = TempDir::new("_rust_rocksdb_case_5_ingest_sst_gen").expect("");
+    let gen_path = tempdir_with_prefix("_rust_rocksdb_case_5_ingest_sst_gen");
     let test_sstfile = gen_path.path().join("test_sst_file");
     let test_sstfile_str = test_sstfile.to_str().unwrap();
     let ingest_opt = IngestExternalFileOptions::new();
@@ -432,7 +434,7 @@ fn test_delete_range_case_5() {
 
 #[test]
 fn test_delete_range_case_6() {
-    let path = TempDir::new("_rust_rocksdb_test_delete_range_case_6").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_delete_range_case_6");
     let path_str = path.path().to_str().unwrap();
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
@@ -465,7 +467,7 @@ fn test_delete_range_case_6() {
         ],
     );
 
-    let path = TempDir::new("_rust_rocksdb_test_delete_range_case_5_2").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_delete_range_case_5_2");
     let path_str = path.path().to_str().unwrap();
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
@@ -481,7 +483,7 @@ fn test_delete_range_case_6() {
         assert_eq!(v, &*db2.get(k).unwrap().unwrap());
     }
 
-    let gen_path = TempDir::new("_rust_rocksdb_case_6_ingest_sst_gen").expect("");
+    let gen_path = tempdir_with_prefix("_rust_rocksdb_case_6_ingest_sst_gen");
     let test_sstfile = gen_path.path().join("test_sst_file");
     let test_sstfile_str = test_sstfile.to_str().unwrap();
     let ingest_opt = IngestExternalFileOptions::new();
@@ -514,7 +516,7 @@ fn test_delete_range_case_6() {
 
 #[test]
 fn test_delete_range_compact() {
-    let path = TempDir::new("_rust_rocksdb_test_delete_range_case_6").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_delete_range_case_6");
     let path_str = path.path().to_str().unwrap();
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
@@ -547,7 +549,7 @@ fn test_delete_range_compact() {
         ],
     );
 
-    let path = TempDir::new("_rust_rocksdb_test_delete_range_case_5_2").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_delete_range_case_5_2");
     let path_str = path.path().to_str().unwrap();
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
@@ -563,7 +565,7 @@ fn test_delete_range_compact() {
         assert_eq!(v, &*db2.get(k).unwrap().unwrap());
     }
 
-    let gen_path = TempDir::new("_rust_rocksdb_case_6_ingest_sst_gen").expect("");
+    let gen_path = tempdir_with_prefix("_rust_rocksdb_case_6_ingest_sst_gen");
     let test_sstfile = gen_path.path().join("test_sst_file");
     let test_sstfile_str = test_sstfile.to_str().unwrap();
     let ingest_opt = IngestExternalFileOptions::new();
@@ -630,7 +632,7 @@ pub fn get_cf_handle<'a>(db: &'a DB, cf: &str) -> Result<&'a CFHandle, String> {
 
 #[test]
 fn test_delete_range_prefix_bloom_case_1() {
-    let path = TempDir::new("_rust_rocksdb_test_delete_range_prefix_bloom_case_1").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_delete_range_prefix_bloom_case_1");
     let path_str = path.path().to_str().unwrap();
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
@@ -660,7 +662,7 @@ fn test_delete_range_prefix_bloom_case_1() {
     }
     let before = gen_crc32_from_db(&db);
 
-    let gen_path = TempDir::new("_rust_rocksdb_case_prefix_bloom_1_ingest_sst_gen").expect("");
+    let gen_path = tempdir_with_prefix("_rust_rocksdb_case_prefix_bloom_1_ingest_sst_gen");
     let test_sstfile = gen_path.path().join("test_sst_file");
     let test_sstfile_str = test_sstfile.to_str().unwrap();
     let ingest_opt = IngestExternalFileOptions::new();
@@ -705,7 +707,7 @@ fn test_delete_range_prefix_bloom_case_1() {
 
 #[test]
 fn test_delete_range_prefix_bloom_case_2() {
-    let path = TempDir::new("_rust_rocksdb_test_delete_range_prefix_bloom_case_2").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_delete_range_prefix_bloom_case_2");
     let path_str = path.path().to_str().unwrap();
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
@@ -735,7 +737,7 @@ fn test_delete_range_prefix_bloom_case_2() {
     }
     let before = gen_crc32_from_db(&db);
 
-    let gen_path = TempDir::new("_rust_rocksdb_case_prefix_bloom_1_ingest_sst_gen").expect("");
+    let gen_path = tempdir_with_prefix("_rust_rocksdb_case_prefix_bloom_1_ingest_sst_gen");
     let test_sstfile = gen_path.path().join("test_sst_file");
     let test_sstfile_str = test_sstfile.to_str().unwrap();
     let ingest_opt = IngestExternalFileOptions::new();
@@ -761,7 +763,7 @@ fn test_delete_range_prefix_bloom_case_2() {
         ],
     );
 
-    let path = TempDir::new("_rust_rocksdb_test_delete_range_prefix_bloom_case_2_2").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_delete_range_prefix_bloom_case_2_2");
     let path_str = path.path().to_str().unwrap();
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
@@ -798,7 +800,7 @@ fn test_delete_range_prefix_bloom_case_2() {
 
 #[test]
 fn test_delete_range_prefix_bloom_case_3() {
-    let path = TempDir::new("_rust_rocksdb_test_delete_range_prefix_bloom_case_3").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_delete_range_prefix_bloom_case_3");
     let path_str = path.path().to_str().unwrap();
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
@@ -843,7 +845,7 @@ fn test_delete_range_prefix_bloom_case_3() {
         ],
     );
 
-    let path = TempDir::new("_rust_rocksdb_test_delete_range_prefix_bloom_case_3_2").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_delete_range_prefix_bloom_case_3_2");
     let path_str = path.path().to_str().unwrap();
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
@@ -866,7 +868,7 @@ fn test_delete_range_prefix_bloom_case_3() {
         assert_eq!(v, &*db2.get(k).unwrap().unwrap());
     }
 
-    let gen_path = TempDir::new("_rust_rocksdb_prefix_bloom_case_3_ingest_sst_gen").expect("");
+    let gen_path = tempdir_with_prefix("_rust_rocksdb_prefix_bloom_case_3_ingest_sst_gen");
     let test_sstfile = gen_path.path().join("test_sst_file");
     let test_sstfile_str = test_sstfile.to_str().unwrap();
     let ingest_opt = IngestExternalFileOptions::new();
@@ -894,7 +896,7 @@ fn test_delete_range_prefix_bloom_case_3() {
 
 #[test]
 fn test_delete_range_prefix_bloom_case_4() {
-    let path = TempDir::new("_rust_rocksdb_test_delete_range_prefix_bloom_case_4").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_delete_range_prefix_bloom_case_4");
     let path_str = path.path().to_str().unwrap();
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
@@ -939,7 +941,7 @@ fn test_delete_range_prefix_bloom_case_4() {
         ],
     );
 
-    let path = TempDir::new("_rust_rocksdb_test_delete_range_prefix_bloom_case_4_2").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_delete_range_prefix_bloom_case_4_2");
     let path_str = path.path().to_str().unwrap();
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
@@ -963,7 +965,7 @@ fn test_delete_range_prefix_bloom_case_4() {
         assert_eq!(v, &*db2.get(k).unwrap().unwrap());
     }
 
-    let gen_path = TempDir::new("_rust_rocksdb_case_prefix_bloom_4_ingest_sst_gen").expect("");
+    let gen_path = tempdir_with_prefix("_rust_rocksdb_case_prefix_bloom_4_ingest_sst_gen");
     let test_sstfile = gen_path.path().join("test_sst_file");
     let test_sstfile_str = test_sstfile.to_str().unwrap();
     let ingest_opt = IngestExternalFileOptions::new();
@@ -991,7 +993,7 @@ fn test_delete_range_prefix_bloom_case_4() {
 
 #[test]
 fn test_delete_range_prefix_bloom_case_5() {
-    let path = TempDir::new("_rust_rocksdb_test_delete_range_prefix_bloom_case_5").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_delete_range_prefix_bloom_case_5");
     let path_str = path.path().to_str().unwrap();
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
@@ -1034,7 +1036,7 @@ fn test_delete_range_prefix_bloom_case_5() {
         ],
     );
 
-    let path = TempDir::new("_rust_rocksdb_test_delete_range_prefix_bloom_case_5_2").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_delete_range_prefix_bloom_case_5_2");
     let path_str = path.path().to_str().unwrap();
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
@@ -1058,7 +1060,7 @@ fn test_delete_range_prefix_bloom_case_5() {
     }
     let before = gen_crc32_from_db(&db2);
 
-    let gen_path = TempDir::new("_rust_rocksdb_case_prefix_bloom_5_ingest_sst_gen").expect("");
+    let gen_path = tempdir_with_prefix("_rust_rocksdb_case_prefix_bloom_5_ingest_sst_gen");
     let test_sstfile = gen_path.path().join("test_sst_file");
     let test_sstfile_str = test_sstfile.to_str().unwrap();
     let ingest_opt = IngestExternalFileOptions::new();
@@ -1083,7 +1085,7 @@ fn test_delete_range_prefix_bloom_case_5() {
 
 #[test]
 fn test_delete_range_prefix_bloom_case_6() {
-    let path = TempDir::new("_rust_rocksdb_test_delete_range_prefix_bloom_case_6").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_delete_range_prefix_bloom_case_6");
     let path_str = path.path().to_str().unwrap();
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
@@ -1128,7 +1130,7 @@ fn test_delete_range_prefix_bloom_case_6() {
         ],
     );
 
-    let path = TempDir::new("_rust_rocksdb_test_delete_range_prefix_bloom_case_6_2").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_delete_range_prefix_bloom_case_6_2");
     let path_str = path.path().to_str().unwrap();
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
@@ -1155,7 +1157,7 @@ fn test_delete_range_prefix_bloom_case_6() {
         assert_eq!(v, &*db2.get(k).unwrap().unwrap());
     }
 
-    let gen_path = TempDir::new("_rust_rocksdb_case_6_ingest_sst_gen").expect("");
+    let gen_path = tempdir_with_prefix("_rust_rocksdb_case_6_ingest_sst_gen");
     let test_sstfile = gen_path.path().join("test_sst_file");
     let test_sstfile_str = test_sstfile.to_str().unwrap();
     let ingest_opt = IngestExternalFileOptions::new();
@@ -1201,7 +1203,7 @@ fn check_kv(db: &DB, cf: Option<&CFHandle>, data: &[(&[u8], Option<&[u8]>)]) {
 
 #[test]
 fn test_delete_range_prefix_bloom_compact_case() {
-    let path = TempDir::new("_rust_rocksdb_test_delete_range_prefix_bloom_case_6").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_delete_range_prefix_bloom_case_6");
     let path_str = path.path().to_str().unwrap();
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
@@ -1246,7 +1248,7 @@ fn test_delete_range_prefix_bloom_compact_case() {
         ],
     );
 
-    let path = TempDir::new("_rust_rocksdb_test_delete_range_prefix_bloom_case_6_2").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_delete_range_prefix_bloom_case_6_2");
     let path_str = path.path().to_str().unwrap();
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
@@ -1273,7 +1275,7 @@ fn test_delete_range_prefix_bloom_compact_case() {
         assert_eq!(v, &*db2.get(k).unwrap().unwrap());
     }
 
-    let gen_path = TempDir::new("_rust_rocksdb_case_6_ingest_sst_gen").expect("");
+    let gen_path = tempdir_with_prefix("_rust_rocksdb_case_6_ingest_sst_gen");
     let test_sstfile = gen_path.path().join("test_sst_file");
     let test_sstfile_str = test_sstfile.to_str().unwrap();
     let ingest_opt = IngestExternalFileOptions::new();
@@ -1303,7 +1305,7 @@ fn test_delete_range_prefix_bloom_compact_case() {
 #[test]
 fn test_delete_range() {
     // Test `DB::delete_range()`
-    let path = TempDir::new("_rust_rocksdb_test_delete_range").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_delete_range");
     let db = DB::open_default(path.path().to_str().unwrap()).unwrap();
 
     // Prepare some data.
@@ -1354,7 +1356,7 @@ fn test_delete_range() {
 
 #[test]
 fn test_delete_range_sst_files() {
-    let path = TempDir::new("_rust_rocksdb_test_delete_range_sst_files").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_delete_range_sst_files");
     let db = DB::open_default(path.path().to_str().unwrap()).unwrap();
     let samples_a = vec![
         (b"key1", b"value1"),
@@ -1417,12 +1419,12 @@ fn test_delete_range_sst_files() {
 
 #[test]
 fn test_delete_range_ingest_file() {
-    let path = TempDir::new("_rust_rocksdb_test_delete_range_ingest_file").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_delete_range_ingest_file");
     let path_str = path.path().to_str().unwrap();
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
     let mut db = DB::open(opts, path_str).unwrap();
-    let gen_path = TempDir::new("_rust_rocksdb_ingest_sst_gen").expect("");
+    let gen_path = tempdir_with_prefix("_rust_rocksdb_ingest_sst_gen");
     let test_sstfile = gen_path.path().join("test_sst_file");
     let test_sstfile_str = test_sstfile.to_str().unwrap();
     let ingest_opt = IngestExternalFileOptions::new();

tests/cases/test_encryption.rs

@@ -11,10 +11,11 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-use rocksdb::Env;
-use rocksdb::{DBOptions, Writable, DB};
 use std::sync::Arc;
-use tempdir::TempDir;
+
+use rocksdb::{DBOptions, Env, Writable, DB};
+
+use super::tempdir_with_prefix;
 
 #[test]
 fn test_ctr_encrypted_env() {
@@ -36,7 +37,7 @@ fn test_ctr_encrypted_env() {
 }
 
 fn test_ctr_encrypted_env_impl(encrypted_env: Arc<Env>) {
-    let path = TempDir::new("_rust_rocksdb_cryption_env").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_cryption_env");
     let path_str = path.path().to_str().unwrap();
 
     let mut opts = DBOptions::new();

tests/cases/test_event_listener.rs

@@ -11,11 +11,13 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-use cases::test_ingest_external_file::gen_sst;
-use rocksdb::*;
 use std::sync::atomic::*;
 use std::sync::Arc;
-use tempdir::TempDir;
+
+use rocksdb::*;
+
+use super::tempdir_with_prefix;
+use super::test_ingest_external_file::gen_sst;
 
 #[derive(Default, Clone)]
 struct EventCounter {
@@ -134,7 +136,7 @@ impl EventListener for BackgroundErrorCounter {
 
 #[test]
 fn test_event_listener_stall_conditions_changed() {
-    let path = TempDir::new("_rust_rocksdb_event_listener_stall_conditions").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_event_listener_stall_conditions");
     let path_str = path.path().to_str().unwrap();
 
     let mut opts = DBOptions::new();
@@ -179,7 +181,7 @@ fn test_event_listener_stall_conditions_changed() {
 
 #[test]
 fn test_event_listener_basic() {
-    let path = TempDir::new("_rust_rocksdb_event_listener_flush").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_event_listener_flush");
     let path_str = path.path().to_str().unwrap();
 
     let mut opts = DBOptions::new();
@@ -225,7 +227,7 @@ fn test_event_listener_basic() {
 
 #[test]
 fn test_event_listener_ingestion() {
-    let path = TempDir::new("_rust_rocksdb_event_listener_ingestion").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_event_listener_ingestion");
     let path_str = path.path().to_str().unwrap();
 
     let mut opts = DBOptions::new();
@@ -234,7 +236,7 @@ fn test_event_listener_ingestion() {
     opts.create_if_missing(true);
     let db = DB::open(opts, path_str).unwrap();
 
-    let gen_path = TempDir::new("_rust_rocksdb_ingest_sst_gen").expect("");
+    let gen_path = tempdir_with_prefix("_rust_rocksdb_ingest_sst_gen");
     let test_sstfile = gen_path.path().join("test_sst_file");
     let test_sstfile_str = test_sstfile.to_str().unwrap();
 
@@ -259,7 +261,7 @@ fn test_event_listener_ingestion() {
 fn test_event_listener_background_error() {
     // TODO(yiwu): should create a test Env object which inject some IO error, to
     // actually trigger background error.
-    let path = TempDir::new("_rust_rocksdb_event_listener_ingestion").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_event_listener_ingestion");
     let path_str = path.path().to_str().unwrap();
 
     let mut opts = DBOptions::new();

tests/cases/test_ingest_external_file.rs

@@ -11,11 +11,13 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-use rocksdb::*;
 use std::fs;
 use std::io::{Read, Write};
 use std::sync::Arc;
-use tempdir::TempDir;
+
+use rocksdb::*;
+
+use super::tempdir_with_prefix;
 
 pub fn gen_sst(
     opt: ColumnFamilyOptions,
@@ -99,11 +101,11 @@ fn concat_merge(_: &[u8], existing_val: Option<&[u8]>, operands: &mut MergeOpera
 
 #[test]
 fn test_ingest_external_file() {
-    let path = TempDir::new("_rust_rocksdb_ingest_sst").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_ingest_sst");
     let mut db = create_default_database(&path);
     db.create_cf("cf1").unwrap();
     let handle = db.cf_handle("cf1").unwrap();
-    let gen_path = TempDir::new("_rust_rocksdb_ingest_sst_gen").expect("");
+    let gen_path = tempdir_with_prefix("_rust_rocksdb_ingest_sst_gen");
     let test_sstfile = gen_path.path().join("test_sst_file");
     let test_sstfile_str = test_sstfile.to_str().unwrap();
     let default_options = db.get_options();
@@ -153,14 +155,14 @@ fn test_ingest_external_file() {
 
 #[test]
 fn test_ingest_external_file_new() {
-    let path = TempDir::new("_rust_rocksdb_ingest_sst_new").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_ingest_sst_new");
     let path_str = path.path().to_str().unwrap();
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
     let mut cf_opts = ColumnFamilyOptions::new();
     cf_opts.add_merge_operator("merge operator", concat_merge);
     let db = DB::open_cf(opts, path_str, vec![("default", cf_opts)]).unwrap();
-    let gen_path = TempDir::new("_rust_rocksdb_ingest_sst_gen_new").expect("");
+    let gen_path = tempdir_with_prefix("_rust_rocksdb_ingest_sst_gen_new");
     let test_sstfile = gen_path.path().join("test_sst_file_new");
     let test_sstfile_str = test_sstfile.to_str().unwrap();
     let default_options = db.get_options();
@@ -213,9 +215,9 @@ fn test_ingest_external_file_new() {
 
 #[test]
 fn test_ingest_external_file_new_cf() {
-    let path = TempDir::new("_rust_rocksdb_ingest_sst_new_cf").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_ingest_sst_new_cf");
     let mut db = create_default_database(&path);
-    let gen_path = TempDir::new("_rust_rocksdb_ingest_sst_gen_new_cf").expect("");
+    let gen_path = tempdir_with_prefix("_rust_rocksdb_ingest_sst_gen_new_cf");
     let test_sstfile = gen_path.path().join("test_sst_file_new_cf");
     let test_sstfile_str = test_sstfile.to_str().unwrap();
     let mut cf_opts = ColumnFamilyOptions::new();
@@ -296,7 +298,7 @@ fn gen_sst_from_cf(opt: ColumnFamilyOptions, db: &DB, cf: &CFHandle, path: &str)
     assert!(info.num_entries() > 0);
 }
 
-fn create_default_database(path: &TempDir) -> DB {
+fn create_default_database(path: &tempfile::TempDir) -> DB {
     let path_str = path.path().to_str().unwrap();
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
@@ -314,9 +316,9 @@ fn create_cfs(db: &mut DB, cfs: &[&str]) {
 #[test]
 fn test_ingest_simulate_real_world() {
     const ALL_CFS: [&str; 3] = ["lock", "write", "default"];
-    let path = TempDir::new("_rust_rocksdb_ingest_real_world_1").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_ingest_real_world_1");
     let mut db = create_default_database(&path);
-    let gen_path = TempDir::new("_rust_rocksdb_ingest_real_world_new_cf").expect("");
+    let gen_path = tempdir_with_prefix("_rust_rocksdb_ingest_real_world_new_cf");
     create_cfs(&mut db, &ALL_CFS);
     for cf in &ALL_CFS {
         let handle = db.cf_handle(cf).unwrap();
@@ -329,7 +331,7 @@ fn test_ingest_simulate_real_world() {
         );
     }
 
-    let path2 = TempDir::new("_rust_rocksdb_ingest_real_world_2").expect("");
+    let path2 = tempdir_with_prefix("_rust_rocksdb_ingest_real_world_2");
     let mut db2 = create_default_database(&path2);
     for cf in &ALL_CFS {
         if *cf != "default" {
@@ -389,7 +391,7 @@ fn test_ingest_simulate_real_world() {
 
 #[test]
 fn test_mem_sst_file_writer() {
-    let path = TempDir::new("_rust_mem_sst_file_writer").expect("");
+    let path = tempdir_with_prefix("_rust_mem_sst_file_writer");
     let db = create_default_database(&path);
 
     let env = Arc::new(Env::new_mem());
@@ -440,9 +442,9 @@ fn test_mem_sst_file_writer() {
 
 #[test]
 fn test_set_external_sst_file_global_seq_no() {
-    let db_path = TempDir::new("_rust_rocksdb_set_external_sst_file_global_seq_no_db").expect("");
+    let db_path = tempdir_with_prefix("_rust_rocksdb_set_external_sst_file_global_seq_no_db");
     let db = create_default_database(&db_path);
-    let path = TempDir::new("_rust_rocksdb_set_external_sst_file_global_seq_no").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_set_external_sst_file_global_seq_no");
     let file = path.path().join("sst_file");
     let sstfile_str = file.to_str().unwrap();
     gen_sst(
@@ -471,9 +473,9 @@ fn test_set_external_sst_file_global_seq_no() {
 
 #[test]
 fn test_ingest_external_file_optimized() {
-    let path = TempDir::new("_rust_rocksdb_ingest_sst_optimized").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_ingest_sst_optimized");
     let db = create_default_database(&path);
-    let gen_path = TempDir::new("_rust_rocksdb_ingest_sst_gen_new_cf").expect("");
+    let gen_path = tempdir_with_prefix("_rust_rocksdb_ingest_sst_gen_new_cf");
     let test_sstfile = gen_path.path().join("test_sst_file_optimized");
     let test_sstfile_str = test_sstfile.to_str().unwrap();
     let handle = db.cf_handle("default").unwrap();
@@ -508,7 +510,7 @@ fn test_ingest_external_file_optimized() {
 
 #[test]
 fn test_read_sst() {
-    let dir = TempDir::new("_rust_rocksdb_test_read_sst").unwrap();
+    let dir = tempdir_with_prefix("_rust_rocksdb_test_read_sst");
     let sst_path = dir.path().join("sst");
     let sst_path_str = sst_path.to_str().unwrap();
     gen_sst_put(ColumnFamilyOptions::new(), None, sst_path_str);
@@ -533,7 +535,7 @@ fn test_read_sst() {
 
 #[test]
 fn test_read_invalid_sst() {
-    let dir = TempDir::new("_rust_rocksdb_test_read_invalid_sst").unwrap();
+    let dir = tempdir_with_prefix("_rust_rocksdb_test_read_invalid_sst");
     let sst_path = dir.path().join("sst");
     let sst_path_str = sst_path.to_str().unwrap();
     gen_sst_put(ColumnFamilyOptions::new(), None, sst_path_str);

tests/cases/test_iterator.rs

@@ -11,12 +11,14 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-use rocksdb::rocksdb::Snapshot;
-use rocksdb::*;
 use std::ops::Deref;
 use std::sync::*;
 use std::thread;
-use tempdir::TempDir;
+
+use rocksdb::rocksdb::Snapshot;
+use rocksdb::*;
+
+use super::tempdir_with_prefix;
 
 struct FixedPrefixTransform {
     pub prefix_len: usize,
@@ -66,7 +68,7 @@ fn next_collect<D: Deref<Target = DB>>(iter: &mut DBIterator<D>) -> Vec<Kv> {
 
 #[test]
 pub fn test_iterator() {
-    let path = TempDir::new("_rust_rocksdb_iteratortest").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_iteratortest");
 
     let k1 = b"k1";
     let k2 = b"k2";
@@ -176,7 +178,7 @@ pub fn test_iterator() {
 
 #[test]
 fn test_send_iterator() {
-    let path = TempDir::new("_rust_rocksdb_iteratortest_send").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_iteratortest_send");
 
     let db = Arc::new(DB::open_default(path.path().to_str().unwrap()).unwrap());
     db.put(b"k1", b"v1").unwrap();
@@ -219,7 +221,7 @@ fn test_send_iterator() {
 
 #[test]
 fn test_seek_for_prev() {
-    let path = TempDir::new("_rust_rocksdb_seek_for_prev").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_seek_for_prev");
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
     {
@@ -267,7 +269,7 @@ fn test_seek_for_prev() {
 
 #[test]
 fn read_with_upper_bound() {
-    let path = TempDir::new("_rust_rocksdb_read_with_upper_bound_test").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_read_with_upper_bound_test");
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
     {
@@ -290,7 +292,7 @@ fn read_with_upper_bound() {
 
 #[test]
 fn test_total_order_seek() {
-    let path = TempDir::new("_rust_rocksdb_total_order_seek").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_total_order_seek");
     let mut bbto = BlockBasedOptions::new();
     bbto.set_bloom_filter(10, false);
     bbto.set_whole_key_filtering(false);
@@ -378,7 +380,7 @@ fn test_total_order_seek() {
 
 #[test]
 fn test_fixed_suffix_seek() {
-    let path = TempDir::new("_rust_rocksdb_fixed_suffix_seek").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_fixed_suffix_seek");
     let mut bbto = BlockBasedOptions::new();
     bbto.set_bloom_filter(10, false);
     bbto.set_whole_key_filtering(false);

tests/cases/test_metadata.rs

@@ -14,11 +14,12 @@
 use rocksdb::{
     CFHandle, ColumnFamilyOptions, CompactionOptions, DBCompressionType, DBOptions, Writable, DB,
 };
-use tempdir::TempDir;
+
+use super::tempdir_with_prefix;
 
 #[test]
 fn test_metadata() {
-    let path = TempDir::new("_rust_rocksdb_test_metadata").unwrap();
+    let path = tempdir_with_prefix("_rust_rocksdb_test_metadata");
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
     let mut cf_opts = ColumnFamilyOptions::new();
@@ -72,7 +73,7 @@ fn get_files_cf(db: &DB, cf: &CFHandle, max_level: usize) -> Vec<String> {
 
 #[test]
 fn test_compact_files() {
-    let path = TempDir::new("_rust_rocksdb_test_metadata").unwrap();
+    let path = tempdir_with_prefix("_rust_rocksdb_test_metadata");
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
     let mut cf_opts = ColumnFamilyOptions::new();

tests/cases/test_multithreaded.rs

@@ -11,16 +11,18 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-use rocksdb::{Writable, DB};
 use std::sync::Arc;
 use std::thread;
-use tempdir::TempDir;
+
+use rocksdb::{Writable, DB};
+
+use super::tempdir_with_prefix;
 
 const N: usize = 100_000;
 
 #[test]
 pub fn test_multithreaded() {
-    let path = TempDir::new("_rust_rocksdb_multithreadtest").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_multithreadtest");
 
     let db = DB::open_default(path.path().to_str().unwrap()).unwrap();
     let db = Arc::new(db);

tests/cases/test_prefix_extractor.rs

@@ -12,7 +12,8 @@
 // limitations under the License.
 
 use rocksdb::*;
-use tempdir::TempDir;
+
+use super::tempdir_with_prefix;
 
 struct FixedPrefixTransform {
     pub prefix_len: usize,
@@ -30,7 +31,7 @@ impl SliceTransform for FixedPrefixTransform {
 
 #[test]
 fn test_prefix_extractor_compatibility() {
-    let path = TempDir::new("_rust_rocksdb_prefix_extractor_compatibility").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_prefix_extractor_compatibility");
     let keys = vec![
         b"k1-0", b"k1-1", b"k1-2", b"k1-3", b"k1-4", b"k1-5", b"k1-6", b"k1-7", b"k1-8",
     ];

tests/cases/test_rate_limiter.rs

@@ -11,9 +11,10 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-use rocksdb::RateLimiter;
 use std::thread;
 
+use rocksdb::RateLimiter;
+
 #[test]
 fn test_rate_limiter() {
     let rate_limiter = RateLimiter::new(10 * 1024 * 1024, 100 * 1000, 10);

tests/cases/test_read_only.rs

 use rocksdb::{DBOptions, Writable, DB};
-use tempdir::TempDir;
+
+use super::tempdir_with_prefix;
 
 macro_rules! check_kv {
     ($db:expr, $key:expr, $val:expr) => {
@@ -12,7 +13,7 @@ macro_rules! check_kv {
 
 #[test]
 fn test_open_for_read_only() {
-    let temp = TempDir::new("_rust_rocksdb_test_open_for_read_only").expect("");
+    let temp = tempdir_with_prefix("_rust_rocksdb_test_open_for_read_only");
     let path = temp.path().to_str().unwrap();
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
@@ -48,7 +49,7 @@ fn test_open_for_read_only() {
 
 #[test]
 fn test_open_cf_for_read_only() {
-    let temp = TempDir::new("_rust_rocksdb_test_open_cf_for_read_only").expect("");
+    let temp = tempdir_with_prefix("_rust_rocksdb_test_open_cf_for_read_only");
     let path = temp.path().to_str().unwrap();
 
     {

tests/cases/test_rocksdb_options.rs

@@ -11,6 +11,11 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+use std::path::Path;
+use std::sync::Arc;
+use std::thread;
+use std::time::Duration;
+
 use rocksdb::crocksdb_ffi::{
     CompactionPriority, DBCompressionType, DBInfoLogLevel as InfoLogLevel, DBRateLimiterMode,
     DBStatisticsHistogramType as HistogramType, DBStatisticsTickerType as TickerType,
@@ -20,15 +25,12 @@ use rocksdb::{
     FifoCompactionOptions, IndexType, LRUCacheOptions, ReadOptions, SeekKey, SliceTransform,
     Writable, WriteOptions, DB,
 };
-use std::path::Path;
-use std::sync::Arc;
-use std::thread;
-use std::time::Duration;
-use tempdir::TempDir;
+
+use super::tempdir_with_prefix;
 
 #[test]
 fn test_set_num_levels() {
-    let path = TempDir::new("_rust_rocksdb_test_set_num_levels").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_set_num_levels");
     let mut opts = DBOptions::new();
     let mut cf_opts = ColumnFamilyOptions::new();
     opts.create_if_missing(true);
@@ -45,7 +47,7 @@ fn test_set_num_levels() {
 
 #[test]
 fn test_log_file_opt() {
-    let path = TempDir::new("_rust_rocksdb_log_file_opt").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_log_file_opt");
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
     opts.set_max_log_file_size(100 * 1024 * 1024);
@@ -57,7 +59,7 @@ fn test_log_file_opt() {
 
 #[test]
 fn test_compaction_readahead_size() {
-    let path = TempDir::new("_rust_rocksdb_compaction_readahead_size").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_compaction_readahead_size");
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
     opts.set_compaction_readahead_size(2048);
@@ -117,7 +119,7 @@ impl SliceTransform for FixedPrefixTransform {
 
 #[test]
 fn test_memtable_insert_hint_prefix_extractor() {
-    let path = TempDir::new("_rust_rocksdb_memtable_insert_hint_prefix_extractor").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_memtable_insert_hint_prefix_extractor");
     let mut opts = DBOptions::new();
     let mut cf_opts = ColumnFamilyOptions::new();
     opts.create_if_missing(true);
@@ -145,7 +147,7 @@ fn test_memtable_insert_hint_prefix_extractor() {
 
 #[test]
 fn test_set_delayed_write_rate() {
-    let path = TempDir::new("_rust_rocksdb_test_set_delayed_write_rate").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_set_delayed_write_rate");
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
     opts.set_delayed_write_rate(2 * 1024 * 1024);
@@ -155,7 +157,7 @@ fn test_set_delayed_write_rate() {
 
 #[test]
 fn test_set_ratelimiter() {
-    let path = TempDir::new("_rust_rocksdb_test_set_rate_limiter").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_set_rate_limiter");
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
     // compaction and flush rate limited below 100MB/sec
@@ -166,7 +168,7 @@ fn test_set_ratelimiter() {
 
 #[test]
 fn test_set_ratelimiter_with_auto_tuned() {
-    let path = TempDir::new("_rust_rocksdb_test_set_rate_limiter_with_auto_tuned").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_set_rate_limiter_with_auto_tuned");
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
     opts.set_ratelimiter_with_auto_tuned(100 * 1024 * 1024, DBRateLimiterMode::AllIo, true);
@@ -176,12 +178,12 @@ fn test_set_ratelimiter_with_auto_tuned() {
 
 #[test]
 fn test_set_wal_opt() {
-    let path = TempDir::new("_rust_rocksdb_test_set_wal_opt").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_set_wal_opt");
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
     opts.set_wal_ttl_seconds(86400);
     opts.set_wal_size_limit_mb(10);
-    let wal_dir = TempDir::new("_rust_rocksdb_test_set_wal_dir").expect("");
+    let wal_dir = tempdir_with_prefix("_rust_rocksdb_test_set_wal_dir");
     opts.set_wal_dir(wal_dir.path().to_str().unwrap());
     let db = DB::open(opts, path.path().to_str().unwrap()).unwrap();
     drop(db);
@@ -190,7 +192,7 @@ fn test_set_wal_opt() {
 #[cfg(not(windows))]
 #[test]
 fn test_flush_wal() {
-    let path = TempDir::new("_rust_rocksdb_test_flush_wal").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_flush_wal");
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
     opts.manual_wal_flush(true);
@@ -203,7 +205,7 @@ fn test_flush_wal() {
 #[cfg(not(windows))]
 #[test]
 fn test_sync_wal() {
-    let path = TempDir::new("_rust_rocksdb_test_sync_wal").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_sync_wal");
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
     let db = DB::open(opts, path.path().to_str().unwrap()).unwrap();
@@ -214,13 +216,13 @@ fn test_sync_wal() {
 
 #[test]
 fn test_create_info_log() {
-    let path = TempDir::new("_rust_rocksdb_test_create_info_log_opt").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_create_info_log_opt");
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
     opts.set_info_log_level(InfoLogLevel::Debug);
     opts.set_log_file_time_to_roll(1);
 
-    let info_dir = TempDir::new("_rust_rocksdb_test_info_log_dir").expect("");
+    let info_dir = tempdir_with_prefix("_rust_rocksdb_test_info_log_dir");
     opts.create_info_log(info_dir.path().to_str().unwrap())
         .unwrap();
 
@@ -243,12 +245,12 @@ fn test_create_info_log() {
 
 #[test]
 fn test_auto_roll_max_size_info_log() {
-    let path = TempDir::new("_rust_rocksdb_test_max_size_info_log_opt").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_test_max_size_info_log_opt");
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
     opts.set_max_log_file_size(10);
 
-    let info_dir = TempDir::new("_rust_rocksdb_max_size_info_log_dir").expect("");
+    let info_dir = tempdir_with_prefix("_rust_rocksdb_max_size_info_log_dir");
     opts.create_info_log(info_dir.path().to_str().unwrap())
         .unwrap();
 
@@ -264,7 +266,7 @@ fn test_auto_roll_max_size_info_log() {
 
 #[test]
 fn test_set_pin_l0_filter_and_index_blocks_in_cache() {
-    let path = TempDir::new("_rust_rocksdb_set_cache_and_index").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_set_cache_and_index");
     let mut opts = DBOptions::new();
     let mut cf_opts = ColumnFamilyOptions::new();
     opts.create_if_missing(true);
@@ -281,7 +283,7 @@ fn test_set_pin_l0_filter_and_index_blocks_in_cache() {
 
 #[test]
 fn test_partitioned_index_filters() {
-    let path = TempDir::new("_rust_rocksdb_set_cache_and_index").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_set_cache_and_index");
     let mut opts = DBOptions::new();
     let mut cf_opts = ColumnFamilyOptions::new();
     opts.create_if_missing(true);
@@ -306,7 +308,7 @@ fn test_partitioned_index_filters() {
 
 #[test]
 fn test_set_lru_cache() {
-    let path = TempDir::new("_rust_rocksdb_set_set_lru_cache").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_set_set_lru_cache");
     let mut opts = DBOptions::new();
     let mut cf_opts = ColumnFamilyOptions::new();
     opts.create_if_missing(true);
@@ -321,7 +323,8 @@ fn test_set_lru_cache() {
 #[cfg(feature = "jemalloc")]
 #[test]
 fn test_set_jemalloc_nodump_allocator_for_lru_cache() {
-    let path = TempDir::new("_rust_rocksdb_set_jemalloc_nodump_allocator").expect("");
+    use rocksdb::MemoryAllocator;
+    let path = tempdir_with_prefix("_rust_rocksdb_set_jemalloc_nodump_allocator");
     let mut opts = DBOptions::new();
     let mut cf_opts = ColumnFamilyOptions::new();
     opts.create_if_missing(true);
@@ -336,7 +339,7 @@ fn test_set_jemalloc_nodump_allocator_for_lru_cache() {
 
 #[test]
 fn test_set_cache_index_and_filter_blocks_with_high_priority() {
-    let path = TempDir::new("_rust_rocksdb_set_cache_and_index_with_high_priority").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_set_cache_and_index_with_high_priority");
     let mut opts = DBOptions::new();
     let mut cf_opts = ColumnFamilyOptions::new();
     opts.create_if_missing(true);
@@ -353,7 +356,7 @@ fn test_set_cache_index_and_filter_blocks_with_high_priority() {
 
 #[test]
 fn test_pending_compaction_bytes_limit() {
-    let path = TempDir::new("_rust_rocksdb_pending_compaction_bytes_limit").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_pending_compaction_bytes_limit");
     let mut opts = DBOptions::new();
     let mut cf_opts = ColumnFamilyOptions::new();
     opts.create_if_missing(true);
@@ -369,7 +372,7 @@ fn test_pending_compaction_bytes_limit() {
 
 #[test]
 fn test_set_max_subcompactions() {
-    let path = TempDir::new("_rust_rocksdb_max_subcompactions").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_max_subcompactions");
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
     opts.set_max_subcompactions(4);
@@ -378,7 +381,7 @@ fn test_set_max_subcompactions() {
 
 #[test]
 fn test_set_bytes_per_sync() {
-    let path = TempDir::new("_rust_rocksdb_bytes_per_sync").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_bytes_per_sync");
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
     opts.set_bytes_per_sync(1024 * 1024);
@@ -388,7 +391,7 @@ fn test_set_bytes_per_sync() {
 
 #[test]
 fn test_set_optimize_filters_for_hits() {
-    let path = TempDir::new("_rust_rocksdb_optimize_filters_for_hits").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_optimize_filters_for_hits");
     let mut opts = DBOptions::new();
     let mut cf_opts = ColumnFamilyOptions::new();
     opts.create_if_missing(true);
@@ -403,7 +406,7 @@ fn test_set_optimize_filters_for_hits() {
 
 #[test]
 fn test_set_force_consistency_checks() {
-    let path = TempDir::new("_rust_rocksdb_force_consistency_checks").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_force_consistency_checks");
     let mut opts = DBOptions::new();
     let mut cf_opts = ColumnFamilyOptions::new();
     opts.create_if_missing(true);
@@ -418,7 +421,7 @@ fn test_set_force_consistency_checks() {
 
 #[test]
 fn test_get_block_cache_usage() {
-    let path = TempDir::new("_rust_rocksdb_set_cache_and_index").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_set_cache_and_index");
 
     let mut opts = DBOptions::new();
     let mut cf_opts = ColumnFamilyOptions::new();
@@ -450,7 +453,7 @@ fn test_get_block_cache_usage() {
 
 #[test]
 fn test_block_cache_capacity() {
-    let path = TempDir::new("_rust_rocksdb_set_and_get_block_cache_capacity").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_set_and_get_block_cache_capacity");
 
     let mut opts = DBOptions::new();
     let mut cf_opts = ColumnFamilyOptions::new();
@@ -493,7 +496,7 @@ fn test_disable_block_cache() {
 
 #[test]
 fn test_set_level_compaction_dynamic_level_bytes() {
-    let path = TempDir::new("_rust_rocksdb_level_compaction_dynamic_level_bytes").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_level_compaction_dynamic_level_bytes");
     let mut opts = DBOptions::new();
     let mut cf_opts = ColumnFamilyOptions::new();
     opts.create_if_missing(true);
@@ -508,7 +511,7 @@ fn test_set_level_compaction_dynamic_level_bytes() {
 
 #[test]
 fn test_compact_options() {
-    let path = TempDir::new("_rust_rocksdb_compact_options").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_compact_options");
     let db = DB::open_default(path.path().to_str().unwrap()).unwrap();
     db.put(b"k1", b"v1").unwrap();
     db.put(b"k2", b"v2").unwrap();
@@ -522,7 +525,7 @@ fn test_compact_options() {
 
 #[test]
 fn test_direct_read_write() {
-    let path = TempDir::new("_rust_rocksdb_direct_read_write").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_direct_read_write");
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
     opts.set_use_direct_reads(true);
@@ -532,7 +535,7 @@ fn test_direct_read_write() {
 
 #[test]
 fn test_writable_file_max_buffer_size() {
-    let path = TempDir::new("_rust_rocksdb_writable_file_max_buffer_size").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_writable_file_max_buffer_size");
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
     opts.set_writable_file_max_buffer_size(1024 * 1024);
@@ -541,7 +544,7 @@ fn test_writable_file_max_buffer_size() {
 
 #[test]
 fn test_set_max_background_jobs() {
-    let path = TempDir::new("_rust_rocksdb_max_background_jobs").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_max_background_jobs");
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
     opts.set_max_background_jobs(4);
@@ -550,7 +553,7 @@ fn test_set_max_background_jobs() {
 
 #[test]
 fn test_set_compaction_pri() {
-    let path = TempDir::new("_rust_rocksdb_compaction_pri").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_compaction_pri");
     let mut opts = DBOptions::new();
     let mut cf_opts = ColumnFamilyOptions::new();
     opts.create_if_missing(true);
@@ -565,7 +568,7 @@ fn test_set_compaction_pri() {
 
 #[test]
 fn test_allow_concurrent_memtable_write() {
-    let path = TempDir::new("_rust_rocksdb_allow_concurrent_memtable_write").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_allow_concurrent_memtable_write");
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
     opts.allow_concurrent_memtable_write(false);
@@ -577,7 +580,7 @@ fn test_allow_concurrent_memtable_write() {
 
 #[test]
 fn test_manual_wal_flush() {
-    let path = TempDir::new("_rust_rocksdb_manual_wal_flush").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_manual_wal_flush");
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
     opts.manual_wal_flush(true);
@@ -589,7 +592,7 @@ fn test_manual_wal_flush() {
 
 #[test]
 fn test_enable_pipelined_write() {
-    let path = TempDir::new("_rust_rocksdb_enable_pipelined_write").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_enable_pipelined_write");
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
     opts.enable_pipelined_write(true);
@@ -626,7 +629,7 @@ fn test_get_compression_per_level() {
 
 #[test]
 fn test_bottommost_compression() {
-    let path = TempDir::new("_rust_rocksdb_bottommost_compression").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_bottommost_compression");
     let mut opts = DBOptions::new();
     let cf_opts = ColumnFamilyOptions::new();
     opts.create_if_missing(true);
@@ -649,17 +652,17 @@ fn test_clone_options() {
 
 #[test]
 fn test_db_paths() {
-    let path = TempDir::new("_rust_rocksdb_db_paths").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_db_paths");
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
-    let tmp_path = TempDir::new("_rust_rocksdb_test_db_path").expect("");
+    let tmp_path = tempdir_with_prefix("_rust_rocksdb_test_db_path");
     opts.set_db_paths(&[(tmp_path.path(), 1073741824 as u64)]);
     DB::open(opts, path.path().to_str().unwrap()).unwrap();
 }
 
 #[test]
 fn test_write_options() {
-    let path = TempDir::new("_rust_rocksdb_write_options").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_write_options");
     let db = DB::open_default(path.path().to_str().unwrap()).unwrap();
 
     let mut write_opts = WriteOptions::new();
@@ -680,7 +683,7 @@ fn test_write_options() {
 
 #[test]
 fn test_read_options() {
-    let path = TempDir::new("_rust_rocksdb_write_options").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_write_options");
     let db = DB::open_default(path.path().to_str().unwrap()).unwrap();
 
     let mut read_opts = ReadOptions::new();
@@ -712,7 +715,7 @@ fn test_read_options() {
 
 #[test]
 fn test_readoptions_lower_bound() {
-    let path = TempDir::new("_rust_rocksdb_readoptions_lower_bound").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_readoptions_lower_bound");
     let db = DB::open_default(path.path().to_str().unwrap()).unwrap();
 
     db.put(b"k1", b"b").unwrap();
@@ -734,7 +737,7 @@ fn test_readoptions_lower_bound() {
 
 #[test]
 fn test_block_based_options() {
-    let path = TempDir::new("_rust_rocksdb_block_based_options").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_block_based_options");
     let path_str = path.path().to_str().unwrap();
 
     let mut opts = DBOptions::new();
@@ -765,7 +768,7 @@ fn test_block_based_options() {
 
 #[test]
 fn test_fifo_compaction_options() {
-    let path = TempDir::new("_rust_rocksdb_fifo_compaction_options").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_fifo_compaction_options");
     let path_str = path.path().to_str().unwrap();
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
@@ -786,7 +789,7 @@ fn test_readoptions_max_bytes_for_level_multiplier() {
 
 #[test]
 fn test_vector_memtable_factory_options() {
-    let path = TempDir::new("_rust_rocksdb_vector_memtable_factory_options").unwrap();
+    let path = tempdir_with_prefix("_rust_rocksdb_vector_memtable_factory_options");
     let path_str = path.path().to_str().unwrap();
 
     let mut opts = DBOptions::new();
@@ -817,7 +820,7 @@ fn test_vector_memtable_factory_options() {
 
 #[test]
 fn test_dboptions_set_env() {
-    let path = TempDir::new("_rust_rocksdb_dboptions_set_env").unwrap();
+    let path = tempdir_with_prefix("_rust_rocksdb_dboptions_set_env");
     let path_str = path.path().to_str().unwrap();
 
     let mut opts = DBOptions::new();

tests/cases/test_slice_transform.rs

@@ -14,7 +14,8 @@
 use rocksdb::{
     BlockBasedOptions, ColumnFamilyOptions, DBOptions, SeekKey, SliceTransform, Writable, DB,
 };
-use tempdir::TempDir;
+
+use super::tempdir_with_prefix;
 
 struct FixedPostfixTransform {
     pub postfix_len: usize,
@@ -33,7 +34,7 @@ impl SliceTransform for FixedPostfixTransform {
 
 #[test]
 fn test_slice_transform() {
-    let path = TempDir::new("_rust_rocksdb_slice_transform_test").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_slice_transform_test");
     let mut opts = DBOptions::new();
     let mut cf_opts = ColumnFamilyOptions::new();
 

tests/cases/test_statistics.rs

@@ -13,11 +13,12 @@
 
 use rocksdb::*;
 use rocksdb::{DBStatisticsHistogramType as HistogramType, DBStatisticsTickerType as TickerType};
-use tempdir::TempDir;
+
+use super::tempdir_with_prefix;
 
 #[test]
 fn test_db_statistics() {
-    let path = TempDir::new("_rust_rocksdb_statistics").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_statistics");
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
     opts.enable_statistics(true);
@@ -49,7 +50,7 @@ fn test_db_statistics() {
 
 #[test]
 fn test_disable_db_statistics() {
-    let path = TempDir::new("_rust_rocksdb_statistics").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_statistics");
     let mut opts = DBOptions::new();
     opts.create_if_missing(true);
     opts.enable_statistics(false);

tests/cases/test_table_properties.rs

@@ -11,15 +11,16 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-use byteorder::{LittleEndian, ReadBytesExt, WriteBytesExt};
+use std::collections::HashMap;
+use std::fmt;
+
 use rocksdb::{
     ColumnFamilyOptions, DBEntryType, DBOptions, Range, ReadOptions, SeekKey, TableFilter,
     TableProperties, TablePropertiesCollection, TablePropertiesCollector,
     TablePropertiesCollectorFactory, UserCollectedProperties, Writable, DB,
 };
-use std::collections::HashMap;
-use std::fmt;
-use tempdir::TempDir;
+
+use super::tempdir_with_prefix;
 
 enum Props {
     NumKeys = 0,
@@ -29,13 +30,13 @@ enum Props {
 }
 
 fn encode_u32(x: u32) -> Vec<u8> {
-    let mut w = Vec::new();
-    w.write_u32::<LittleEndian>(x).unwrap();
-    w
+    x.to_le_bytes().to_vec()
 }
 
-fn decode_u32(mut x: &[u8]) -> u32 {
-    x.read_u32::<LittleEndian>().unwrap()
+fn decode_u32(x: &[u8]) -> u32 {
+    let mut dst = [0u8; 4];
+    dst.copy_from_slice(&x[..4]);
+    u32::from_le_bytes(dst)
 }
 
 struct ExampleCollector {
@@ -169,7 +170,7 @@ fn test_table_properties_collector_factory() {
     opts.create_if_missing(true);
     cf_opts.add_table_properties_collector_factory("example-collector", Box::new(f));
 
-    let path = TempDir::new("_rust_rocksdb_collectortest").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_collectortest");
     let db = DB::open_cf(
         opts,
         path.path().to_str().unwrap(),
@@ -243,7 +244,7 @@ fn test_table_properties_with_table_filter() {
     opts.create_if_missing(true);
     cf_opts.add_table_properties_collector_factory("example-collector", Box::new(f));
 
-    let path = TempDir::new("_rust_rocksdb_collector_with_table_filter").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_collector_with_table_filter");
     let db = DB::open_cf(
         opts,
         path.path().to_str().unwrap(),

tests/cases/test_titan.rs

@@ -14,9 +14,6 @@
 use std::collections::HashMap;
 use std::ops;
 
-use byteorder::{LittleEndian, ReadBytesExt, WriteBytesExt};
-use tempdir::TempDir;
-
 use rand::Rng;
 use rocksdb::{
     CFHandle, ColumnFamilyOptions, CompactOptions, DBBottommostLevelCompaction, DBCompressionType,
@@ -25,14 +22,16 @@ use rocksdb::{
     Writable, DB,
 };
 
+use super::tempdir_with_prefix;
+
 fn encode_u32(x: u32) -> Vec<u8> {
-    let mut w = Vec::new();
-    w.write_u32::<LittleEndian>(x).unwrap();
-    w
+    x.to_le_bytes().to_vec()
 }
 
-fn decode_u32(mut x: &[u8]) -> u32 {
-    x.read_u32::<LittleEndian>().unwrap()
+fn decode_u32(x: &[u8]) -> u32 {
+    let mut dst = [0u8; 4];
+    dst.copy_from_slice(&x[..4]);
+    u32::from_le_bytes(dst)
 }
 
 #[derive(Default)]
@@ -103,7 +102,7 @@ fn check_table_properties(db: &DB, num_blobs: u32, num_entries: u32) {
 fn test_titandb() {
     let max_value_size = 10;
 
-    let path = TempDir::new("test_titandb").unwrap();
+    let path = tempdir_with_prefix("test_titandb");
     let tdb_path = path.path().join("titandb");
     let mut tdb_opts = TitanDBOptions::new();
     tdb_opts.set_dirname(tdb_path.to_str().unwrap());
@@ -229,7 +228,7 @@ fn generate_file_bottom_level(db: &DB, handle: &CFHandle, range: ops::Range<u32>
 
 #[test]
 fn test_titan_delete_files_in_ranges() {
-    let path = TempDir::new("_rust_rocksdb_test_titan_delete_files_in_multi_ranges").unwrap();
+    let path = tempdir_with_prefix("_rust_rocksdb_test_titan_delete_files_in_multi_ranges");
     let tdb_path = path.path().join("titandb");
     let mut tdb_opts = TitanDBOptions::new();
     tdb_opts.set_dirname(tdb_path.to_str().unwrap());
@@ -290,7 +289,7 @@ fn test_titan_delete_files_in_ranges() {
 
 #[test]
 fn test_get_blob_cache_usage() {
-    let path = TempDir::new("_rust_rocksdb_set_blob_cache").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_set_blob_cache");
     let tdb_path = path.path().join("titandb");
     let mut tdb_opts = TitanDBOptions::new();
     tdb_opts.set_dirname(tdb_path.to_str().unwrap());
@@ -324,7 +323,7 @@ fn test_get_blob_cache_usage() {
 
 #[test]
 fn test_blob_cache_capacity() {
-    let path = TempDir::new("_rust_rocksdb_set_and_get_blob_cache_capacity").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_set_and_get_blob_cache_capacity");
     let tdb_path = path.path().join("titandb");
     let mut tdb_opts = TitanDBOptions::new();
     tdb_opts.set_dirname(tdb_path.to_str().unwrap());

tests/cases/test_ttl.rs

 use rocksdb::{ColumnFamilyOptions, DBOptions, Writable, DB};
-use tempdir::TempDir;
+
+use super::tempdir_with_prefix;
 
 #[test]
 pub fn test_ttl() {
-    let path = TempDir::new("_rust_rocksdb_ttl_test").expect("");
+    let path = tempdir_with_prefix("_rust_rocksdb_ttl_test");
     let path_str = path.path().to_str().unwrap();
 
     // should be able to open db with ttl

tests/tests.rs

-extern crate byteorder;
 extern crate crc;
 extern crate rand;
 extern crate rocksdb;
-extern crate tempdir;
+extern crate tempfile;
 
 mod cases;