tests: add basic infrastructure for regression tests

The patch adds tests/ directory with simple regression tests infrastructure.

Also, it adds the "ts-mount-paths" test that testing if all defined paths
(fstab, mtab, locks) are still same.

Signed-off-by: Karel Zak <kzak@redhat.com>

7 files changed, 122 insertions, 0 deletions

diff --git a/tests/Makefile.am b/tests/Makefile.am
new file mode 100644
index 000000000..65cd57a52
--- /dev/null
+++ b/tests/Makefile.am
@@ -0,0 +1,10 @@
+include $(top_srcdir)/config/include-Makefile.am
+
+EXTRA_DIST = 	commands.sh.in \
+		functions.sh \
+		ts-mount-paths \
+		expected/ts-mount-paths
+
+distclean-local:
+	rm -rf output diff
+
diff --git a/tests/README b/tests/README
new file mode 100644
index 000000000..bcade3d7a
--- /dev/null
+++ b/tests/README
@@ -0,0 +1,16 @@
+
+ util-linux regression tests
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+ It's expected that for each invasive change or important bugfix you will
+ include a test to your patch.
+
+
+ Run all tests:
+
+	./run.sh
+
+ Run one tests:
+
+	./ts-<component_name>-<test_name>.sh
+
diff --git a/tests/commands.sh.in b/tests/commands.sh.in
new file mode 100644
index 000000000..ecdb9b948
--- /dev/null
+++ b/tests/commands.sh.in
@@ -0,0 +1,8 @@
+TOPDIR=@top_srcdir@
+TS_TOPDIR=$TOPDIR/tests
+
+# paths to commands
+TS_CMD_MOUNT=${TS_CMD_MOUNT:-"$TOPDIR/mount/mount"}
+TS_CMD_UMOUNT=${TS_CMD_MOUNT:-"$TOPDIR/mount/umount"}
+TS_CMD_SWAPON=${TS_CMD_MOUNT:-"$TOPDIR/mount/swapon"}
+TS_CMD_SWAPOFF=${TS_CMD_MOUNT:-"$TOPDIR/mount/swapoff"}
diff --git a/tests/expected/ts-mount-paths b/tests/expected/ts-mount-paths
new file mode 100644
index 000000000..d6f798aef
--- /dev/null
+++ b/tests/expected/ts-mount-paths
@@ -0,0 +1,7 @@
+DEBUG: fstab path: "/etc/fstab"
+DEBUG: lock path:  "/etc/mtab~"
+DEBUG: temp path:  "/etc/mtab.tmp"
+DEBUG: spec:  "/dev/dummy"
+DEBUG: node:  "/mnt"
+DEBUG: types: "(null)"
+DEBUG: opts:  "(null)"
diff --git a/tests/functions.sh b/tests/functions.sh
new file mode 100644
index 000000000..64392e4d5
--- /dev/null
+++ b/tests/functions.sh
@@ -0,0 +1,42 @@
+
+TS_OUTDIR="$TS_TOPDIR/output"
+TS_DIFFDIR="$TS_TOPDIR/diff"
+TS_EXPECTEDDIR="$TS_TOPDIR/expected"
+
+function ts_init {
+	TS_NAME=$(basename $0)
+	if [ ! -d $TS_OUTDIR ]; then
+		mkdir -p $TS_OUTDIR
+	fi
+	if [ ! -d $TS_DIFFDIR ]; then
+		mkdir -p $TS_DIFFDIR
+	fi
+	TS_OUTPUT="$TS_OUTDIR/$TS_NAME"
+	TS_DIFF="$TS_DIFFDIR/$TS_NAME"
+	TS_EXPECTED="$TS_EXPECTEDDIR/$TS_NAME"
+
+	printf "%15s: %-25s ..." "$TS_COMPONENT" "$TS_DESC"
+}
+
+function ts_finalize {
+	local res=0
+
+	if [ -s $TS_EXPECTED ]; then
+		if [ -s $TS_OUTPUT ]; then
+			diff -u $TS_EXPECTED $TS_OUTPUT > $TS_DIFF
+			if [ -s $TS_DIFF ]; then
+				res=1
+			fi
+		else
+			res=0
+		fi
+	fi
+	if [ $res -eq 0 ]; then
+		echo " OK"
+		exit 0
+	else
+		echo " FAILED ($TS_NAME)"
+		exit 1
+	fi
+}
+
diff --git a/tests/run.sh b/tests/run.sh
new file mode 100755
index 000000000..b4ca51b57
--- /dev/null
+++ b/tests/run.sh
@@ -0,0 +1,25 @@
+#!/bin/bash
+
+. commands.sh
+
+echo
+echo "------------------ Utils-linux-ng regression tests ------------------"
+echo
+
+res=0
+count=0
+for ts in `ls ts-*`; do
+	$TS_TOPDIR/$ts
+	res=$(( $res + $? ))
+	count=$(( $count + 1 ))
+done
+
+echo
+echo "---------------------------------------------------------------------"
+if [ $res -eq 0 ]; then
+	echo "  All $count tests PASSED"
+else
+	echo "  $res tests of $count FAILED"
+fi
+echo "---------------------------------------------------------------------"
+
diff --git a/tests/ts-mount-paths b/tests/ts-mount-paths
new file mode 100755
index 000000000..137aade38
--- /dev/null
+++ b/tests/ts-mount-paths
@@ -0,0 +1,14 @@
+#!/bin/bash
+
+. commands.sh
+. functions.sh
+
+TS_COMPONENT="mount"
+TS_DESC="basic paths"
+
+ts_init
+
+$TS_CMD_MOUNT -n -f --debug=2 /dev/dummy /mnt &> $TS_OUTPUT
+
+ts_finalize
+