stash: add two more tests for --no-keep-index

One of these passes just fine; the other one exposes a problem where
command line flag order matters for --no-keep-index and --patch
interaction.

Signed-off-by: Dan McGee <dpmcgee@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t3903-stash.sh

@@ -218,6 +218,14 @@ test_expect_success 'stash -k' '
 	test bar,bar4 = $(cat file),$(cat file2)
 '
 
+test_expect_success 'stash --no-keep-index' '
+	echo bar33 > file &&
+	echo bar44 > file2 &&
+	git add file2 &&
+	git stash --no-keep-index &&
+	test bar,bar2 = $(cat file),$(cat file2)
+'
+
 test_expect_success 'stash --invalid-option' '
 	echo bar5 > file &&
 	echo bar6 > file2 &&

t/t3904-stash-patch.sh

@@ -48,6 +48,18 @@ test_expect_success PERL 'git stash -p --no-keep-index' '
 	verify_state bar dummy bar_index
 '
 
+test_expect_failure PERL 'git stash --no-keep-index -p' '
+	set_state dir/foo work index &&
+	set_state bar bar_work bar_index &&
+	(echo n; echo y) | git stash save --no-keep-index -p &&
+	verify_state dir/foo head head &&
+	verify_state bar bar_work dummy &&
+	git reset --hard &&
+	git stash apply --index &&
+	verify_state dir/foo work index &&
+	verify_state bar dummy bar_index
+'
+
 test_expect_success PERL 'none of this moved HEAD' '
 	verify_saved_head
 '