btrfs-progs: test/common: Introduce run_mustfail_stdout

For later test case which needs info from stderr.

Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/tests/common b/tests/common
index dec090f..3ce9909 100644 (file)
--- a/tests/common
+++ b/tests/common
@@ -236,6 +236,58 @@ run_mustfail()
        fi
 }
 
+# The first parameter is error message to print if it fails, just like
+# run_must_fail().
+# NOTE: we don't use pipefail to avoid disturbing other script, so here we
+# use a temporary output file.
+# So it doesn't support pipeline in the @cmd
+run_mustfail_stdout()
+{
+       local spec
+       local ins
+       local cmd
+       local msg
+       local ret
+       local tmp_output
+
+       tmp_output=$(mktemp --tmpdir btrfs-progs-test--mustfail-stdtout.XXXXXX)
+
+       msg="$1"
+       shift
+
+       if _is_file_or_command "$msg"; then
+               echo "ASSERTION FAIL: 1st argument of run_mustfail_stdout must be a message"
+               exit 1
+       fi
+
+       ins=$(_get_spec_ins "$@")
+       spec=$(($ins-1))
+       cmd=$(eval echo "\${$spec}")
+       spec=$(_cmd_spec "${@:$spec}")
+       set -- "${@:1:$(($ins-1))}" $spec "${@: $ins}"
+       echo "############### $@" >> "$RESULTS" 2>&1
+       if [[ $TEST_LOG =~ tty ]]; then echo "CMD(mustfail): $@" > /dev/tty; fi
+       if [ "$1" = 'root_helper' ]; then
+               "$@" 2>&1 > "$tmp_output"
+       else
+               $INSTRUMENT "$@" 2>&1 > "$tmp_output"
+       fi
+       ret=$?
+
+       cat "$tmp_output" >> "$RESULTS"
+       cat "$tmp_output"
+       rm "$tmp_output"
+
+       if [ "$ret" != 0 ]; then
+               echo "failed (expected): $@" >> "$RESULTS"
+               return 0
+       else
+               echo "succeeded (unexpected!): $@" >> "$RESULTS"
+               _fail "unexpected success: $msg"
+               return 1
+       fi
+}
+
 check_prereq()
 {
        if ! [ -f "$TOP/$1" ]; then