1 file changed, 31 insertions, 0 deletions
diff --git a/tests/t0303-robustness.sh b/tests/t0303-robustness.sh
index 2472bcd..b189334 100755
--- a/tests/t0303-robustness.sh
+++ b/tests/t0303-robustness.sh
@@ -935,4 +935,35 @@ test_expect_success 'descriptive values from a scanned repository are escaped' '
 	test_grep ! "<x>" tmp
 '
 
+# A repository's own config cannot point the mailmap reader at a file on the
+# server or another blob, and git reads the mailmap whole, so one past
+# max-blob-size is passed over like any other large blob.
+test_expect_success 'only a .mailmap at HEAD within max-blob-size is applied' '
+	test_create_repo repos/mapped &&
+	(
+		cd repos/mapped &&
+		echo content >file &&
+		git add file &&
+		GIT_AUTHOR_NAME="Old Name" GIT_AUTHOR_EMAIL=old@example.com \
+			git commit -q -m first &&
+		echo "New Name <new@example.com> <old@example.com>" >.mailmap &&
+		test_seq -f "# padding line %d" 1 200 >>.mailmap &&
+		echo "Blob Name <blob@example.com> <old@example.com>" >other-map &&
+		git add .mailmap other-map &&
+		git commit -q -m "add the mailmaps" &&
+		echo "File Name <file@example.com> <old@example.com>" >../map-on-disk &&
+		git config mailmap.file "$PWD/../map-on-disk" &&
+		git config mailmap.blob HEAD:other-map
+	) &&
+	test $(git -C repos/mapped cat-file -s HEAD:.mailmap) -ge 2048 &&
+	cgitrc_repo mappedrc mapped &&
+	cgit_ok mappedrc "url=mapped/log/" >tmp &&
+	test_grep "<td class=.col-author.>New Name</td>" tmp &&
+	test_grep ! -e "File Name" -e "Blob Name" tmp &&
+	cgitrc_repo mappedcaprc mapped max-blob-size=1 &&
+	cgit_ok mappedcaprc "url=mapped/log/" >tmp &&
+	test_grep "<td class=.col-author.>Old Name</td>" tmp &&
+	test_grep ! "New Name" tmp
+'
+
 test_done