[PATCH v6 06/11] Add a test for `git replace --convert-graft-file`

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The proof, as the saying goes, lies in the pudding. So here is a
regression test that not only demonstrates what the option is supposed to
accomplish, but also demonstrates that it does accomplish it.

Signed-off-by: Johannes Schindelin <johannes.schindelin@xxxxxx>
---
 t/t6050-replace.sh | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/t/t6050-replace.sh b/t/t6050-replace.sh
index c630aba657e..bed86a0af3d 100755
--- a/t/t6050-replace.sh
+++ b/t/t6050-replace.sh
@@ -444,4 +444,24 @@ test_expect_success GPG '--graft on a commit with a mergetag' '
 	git replace -d $HASH10
 '
 
+test_expect_success '--convert-graft-file' '
+	: add and convert graft file &&
+	printf "%s\n%s %s\n\n# comment\n%s\n" \
+		$(git rev-parse HEAD^^ HEAD^ HEAD^^ HEAD^2) \
+		>.git/info/grafts &&
+	git replace --convert-graft-file &&
+	test_path_is_missing .git/info/grafts &&
+
+	: verify that the history is now "grafted" &&
+	git rev-list HEAD >out &&
+	test_line_count = 4 out &&
+
+	: create invalid graft file and verify that it is not deleted &&
+	test_when_finished "rm -f .git/info/grafts" &&
+	echo $EMPTY_BLOB $EMPTY_TREE >.git/info/grafts &&
+	test_must_fail git replace --convert-graft-file 2>err &&
+	test_i18ngrep "$EMPTY_BLOB $EMPTY_TREE" err &&
+	test_i18ngrep "$EMPTY_BLOB $EMPTY_TREE" .git/info/grafts
+'
+
 test_done
-- 
2.17.0.windows.1.33.gfcbb1fa0445





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