test: add crit test

Test steps:
1) generate img files by dumping loop.sh
2) convert img files to json files
3) convert json files to img files
4) cmp original and produces img files

It also uses i/o redirection and --format nice options to
check if they work properly.
Signed-off-by: Ruslan Kuprieiev <kupruser@gmail.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

test/Makefile

@@ -55,6 +55,7 @@ clean:
 	$(Q) $(MAKE) -C zdtm cleandep clean cleanout
 	$(Q) $(MAKE) -C libcriu clean
 	$(Q) $(MAKE) -C rpc clean
+	$(Q) $(MAKE) -C crit clean
 
 mount_cgroups: .FORCE
 	flock zdtm_mount_cgroups ./zdtm_mount_cgroups

test/crit/.gitignore

+*.img
+*.log
+*.txt
+stats-*
+*.json

test/crit/Makefile

+images:
+	setsid ./loop.sh < /dev/null &> /dev/null & \
+	../../criu dump -v4 -o dump.log -D ./ -t $${!} --shell-job
+
+run: images
+	./test.sh
+
+clean:
+	rm -f *.img *.log *.txt stats-* *.json

test/crit/loop.sh

+#!/bin/bash
+while :; do
+	sleep 1
+done

test/crit/test.sh

+images_list=$(ls -1 *.img)
+
+function _exit {
+	if [ $? -ne 0 ]; then
+		echo "FAIL"
+		exit -1
+	fi
+}
+
+for x in $images_list
+do
+	echo "=== $x"
+	if [[ $x == pages* ]]; then
+		echo "skip"
+		continue
+	fi
+
+	echo "  -- to json"
+	../../crit convert -o "$x"".json" --format nice < $x || _exit $?
+	echo "  -- to img"
+	../../crit convert -i "$x"".json" > "$x"".json.img" || _exit $?
+	echo "  -- cmp"
+	cmp $x "$x"".json.img" || _exit $?
+
+	echo "=== done"
+done