1 file changed, 11 insertions, 0 deletions
diff --git a/tests/t0502-syntax-highlight.sh b/tests/t0502-syntax-highlight.sh
index c0b4480..cb31bfc 100755
--- a/tests/t0502-syntax-highlight.sh
+++ b/tests/t0502-syntax-highlight.sh
@@ -32,6 +32,17 @@ do
 	'
 done
 
+# A class the filter writes with no rule in the stylesheet colours nothing.
+test_expect_success 'every class the filter writes is styled' '
+	sed -n "s/^.*= \"\(hl-[a-z]*\)\",$/\1/p" "$EXTENSIONS_DIRECTORY/syntax-highlight.lua" |
+		sort -u >classes &&
+	test -s classes &&
+	while read class
+	do
+		test_grep "^div#cgit \.$class {" "$TEST_OUTPUT_DIRECTORY/../assets/cgit.css" || return 1
+	done <classes
+'
+
 test_expect_success 'create a repository holding a lexable file' '
 	test_create_repo repos/fake &&
 	(