X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=blobdiff_plain;f=t%2Ft4017-diff-retval.sh;h=dc0b7126cc996594b415058d83014a2c7d732895;hb=a41acc63badf20cbb22cca61039dca9309deaa19;hp=68731908beaae88da6cc309fea91e84df533dfdc;hpb=12d6697f3a9f07db0c437438804aec994fc34035;p=git.git

diff --git a/t/t4017-diff-retval.sh b/t/t4017-diff-retval.sh
index 68731908b..dc0b7126c 100755
--- a/t/t4017-diff-retval.sh
+++ b/t/t4017-diff-retval.sh
@@ -76,4 +76,33 @@ test_expect_success 'git diff-index --cached HEAD' '
 	}
 '
 
+test_expect_success '--check --exit-code returns 0 for no difference' '
+
+	git diff --check --exit-code
+
+'
+
+test_expect_success '--check --exit-code returns 1 for a clean difference' '
+
+	echo "good" > a &&
+	git diff --check --exit-code
+	test $? = 1
+
+'
+
+test_expect_success '--check --exit-code returns 3 for a dirty difference' '
+
+	echo "bad   " >> a &&
+	git diff --check --exit-code
+	test $? = 3
+
+'
+
+test_expect_success '--check with --no-pager returns 2 for dirty difference' '
+
+	git --no-pager diff --check
+	test $? = 2
+
+'
+
 test_done