X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=dgit.git;a=blobdiff_plain;f=tests%2Flib;h=f45dd0b2bb80ecbdec39807d471cac72bf2f531d;hp=776e2a3e40f42bf426365d96f2894e57795044e7;hb=f97a00d63b1d302cb23c5ffb090efea80fd8d42f;hpb=9f377842120dd8d6206a3f3f2eb297b3e4907fa8

diff --git a/tests/lib b/tests/lib
index 776e2a3e..f45dd0b2 100644
--- a/tests/lib
+++ b/tests/lib
@@ -44,12 +44,40 @@ END
 
 t-expect-fail () {
 	local mpat="$1"; shift
+
+	local grepper=fgrep
+	case "$mpat" in
+	[A-Z]:*)
+		case "$mpat" in
+		E:*)	grepper=egrep	;;
+		F:*)	grepper=fgrep	;;
+		*)	fail "bad mpat prefix in $mpat";;
+		esac
+		mpat=${mpat#[A-Z]:}
+		;;
+	esac
+
 	set +o pipefail
 	LC_MESSAGES=C "$@" 2>&1 | tee $tmp/t.output
-	local gotstatus=${PIPESTATUS[0]}
+	local ps="${PIPESTATUS[*]}"
 	set -o pipefail
-	test $gotstatus != 0
-	egrep "$mpat" $tmp/t.output ||false
+
+	case $ps in
+	"0 0")	fail "command unexpectedly succeeded (instead of: $mpat)" ;;
+	*" 0")	;;
+	*)	fail "tee failed"  ;;
+	esac
+
+	$grepper -e "$mpat" $tmp/t.output ||
+		fail "error message not found"
+}
+
+t-expect-push-fail () {
+	local mpat="$1"; shift
+	t-reporefs pre-push
+	t-expect-fail "$mpat"  "$@"
+	t-reporefs post-push
+	diff $tmp/show-refs.{pre,post}-push
 }
 
 t-reporefs () {