Add tests to check the exit code of git diff with its options --quiet
and --exit-code when using an external diff program. Currently we
cannot tell whether it found significant changes or not.
Signed-off-by: René Scharfe <l.s.r@xxxxxx>
---
t/t4020-diff-external.sh | 33 +++++++++++++++++++++++++++++++++
1 file changed, 33 insertions(+)
diff --git a/t/t4020-diff-external.sh b/t/t4020-diff-external.sh
index fdd865f7c3..bed640b2b1 100755
--- a/t/t4020-diff-external.sh
+++ b/t/t4020-diff-external.sh
@@ -172,6 +172,39 @@ test_expect_success 'no diff with -diff' '
grep Binary out
'
+check_external_exit_code () {
+ expect_code=$1
+ command_code=$2
+ option=$3
+
+ command="exit $command_code;"
+ desc="external diff '$command'"
+
+ test_expect_success "$desc via attribute with $option" "
+ test_config diff.foo.command \"$command\" &&
+ echo \"file diff=foo\" >.gitattributes &&
+ test_expect_code $expect_code git diff $option
+ "
+
+ test_expect_success "$desc via diff.external with $option" "
+ test_config diff.external \"$command\" &&
+ >.gitattributes &&
+ test_expect_code $expect_code git diff $option
+ "
+
+ test_expect_success "$desc via GIT_EXTERNAL_DIFF with $option" "
+ >.gitattributes &&
+ test_expect_code $expect_code env \
+ GIT_EXTERNAL_DIFF=\"$command\" \
+ git diff $option
+ "
+}
+
+check_external_exit_code 1 0 --exit-code
+check_external_exit_code 1 0 --quiet
+check_external_exit_code 128 1 --exit-code
+check_external_exit_code 1 1 --quiet # we don't even call the program
+
echo NULZbetweenZwords | perl -pe 'y/Z/\000/' > file
test_expect_success 'force diff with "diff"' '
--
2.45.2
