Harden the lua filter failure paths

1 file changed, 22 insertions, 0 deletions

diff --git a/tests/t0201-filters.sh b/tests/t0201-filters.sh
index a8341aa..8d67c4f 100755
--- a/tests/t0201-filters.sh
+++ b/tests/t0201-filters.sh
@@ -65,4 +65,26 @@ do
 	"
 done
 
+test "$CGIT_HAS_LUA" -eq 1 && test_set_prereq CGIT_LUA
+test "$CGIT_HAS_LUA" -eq 1 || say 'cgit built without lua, error page check skipped'
+
+# A die inside a lua filter has to reach the visitor as an error page rather
+# than being fed back into the filter that just failed.
+test_expect_success CGIT_LUA 'a failing lua filter still renders an error page' '
+	cat >broken.lua <<-\EOF &&
+	function filter_open(...) error("boom") end
+	function filter_write(str) end
+	function filter_close() return 0 end
+	EOF
+	{
+		echo "cache-size=0" &&
+		echo "repo.url=foo" &&
+		echo "repo.path=$PWD/repos/foo/.git" &&
+		echo "auth-filter=lua:$PWD/broken.lua"
+	} >brokenrc &&
+	CGIT_CONFIG="$PWD/brokenrc" QUERY_STRING="url=foo/commit" cgit >tmp &&
+	grep "Status: 400" tmp &&
+	grep "Lua error in" tmp
+'
+
 test_done