1 file changed, 20 insertions, 0 deletions
diff --git a/tests/t0201-filters.sh b/tests/t0201-filters.sh
index 1dd0910..c2d0ec4 100755
--- a/tests/t0201-filters.sh
+++ b/tests/t0201-filters.sh
@@ -130,4 +130,24 @@ test_expect_success CGIT_LUA 'a failing lua filter still renders an error page'
 	grep "Lua error in" err
 '
 
+# A script runs its top level before cgit hooks stdout for it, so what it
+# writes there goes straight onto the page instead of tripping the hook.
+test_expect_success CGIT_LUA 'a lua filter that writes while loading still renders' '
+	cat >loud.lua <<-\EOF &&
+	html("written while loading")
+	function filter_open(...) end
+	function filter_write(str) html(str) end
+	function filter_close() return 0 end
+	EOF
+	{
+		echo "cache-size=0" &&
+		echo "repo.url=foo" &&
+		echo "repo.path=$PWD/repos/foo/.git" &&
+		echo "repo.commit-filter=lua:$PWD/loud.lua"
+	} >loudrc &&
+	CGIT_CONFIG="$PWD/loudrc" QUERY_STRING="url=foo/commit" cgit >tmp &&
+	grep "written while loading" tmp &&
+	grep "</html>" tmp
+'
+
 test_done