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-rwxr-xr-xt/t4017-diff-retval.sh29
1 files changed, 29 insertions, 0 deletions
diff --git a/t/t4017-diff-retval.sh b/t/t4017-diff-retval.sh
index 68731908be..dc0b7126cc 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