1 file changed, 74 insertions, 0 deletions
diff --git a/tests/t0502-syntax-highlight.sh b/tests/t0502-syntax-highlight.sh
new file mode 100755
index 0000000..c7cbf89
--- /dev/null
+++ b/tests/t0502-syntax-highlight.sh
@@ -0,0 +1,74 @@
+#!/bin/sh
+
+# Checks syntax-highlight.lua, the shipped source-filter. The real
+# Scintillua collection is not assumed anywhere, because the fake lexer
+# module under extensions/fake-lexers drives every path through the
+# filter deterministically. The unit checks run twice per interpreter, once
+# with the fake lexers found and once with an empty directory so the escaped
+# fallback is what everything renders through. The run through cgit itself
+# places the fake lexers beside the config file, which is the probe the
+# filter documents for a scintillua directory next to cgitrc.
+
+test_description='Check the shipped syntax-highlight extension'
+CGIT_TEST_NO_CREATE_REPOS=YesPlease
+. ./setup.sh
+. "$TEST_OUTPUT_DIRECTORY/extensions/lib.sh"
+
+interpreters=$(ext_lua_interpreters 5)
+test -z "$interpreters" &&
+	say 'no standalone lua on the path, unit checks skipped'
+
+for lua in $interpreters
+do
+	test_expect_success "highlighting checks under $lua" "
+		CGIT_SCINTILLUA_PATH='$EXT_TEST_DIRECTORY/fake-lexers' \
+		'$lua' '$EXT_TEST_DIRECTORY/test-syntax-highlight.lua' \
+			'$EXTENSIONS_DIRECTORY/syntax-highlight.lua' highlight
+	"
+
+	test_expect_success "fallback checks without lexers under $lua" "
+		mkdir -p empty-lexers &&
+		CGIT_SCINTILLUA_PATH=\"\$PWD/empty-lexers\" \
+		'$lua' '$EXT_TEST_DIRECTORY/test-syntax-highlight.lua' \
+			'$EXTENSIONS_DIRECTORY/syntax-highlight.lua' nolexers
+	"
+done
+
+test "$CGIT_HAS_LUA" -eq 1 && test_set_prereq CGIT_LUA
+test "$CGIT_HAS_LUA" -eq 1 ||
+	say 'cgit built without lua, filter checks through cgit skipped'
+
+test_expect_success 'create a repository holding a lexable file' '
+	test_create_repo repos/fake &&
+	(
+		cd repos/fake &&
+		echo "if 42 & zz" >hello.fake &&
+		git add hello.fake &&
+		git commit -m "add hello"
+	)
+'
+
+test_expect_success 'place the fake lexers beside a config naming the filter' '
+	mkdir -p scintillua &&
+	cp -R "$EXT_TEST_DIRECTORY/fake-lexers" scintillua/lexers &&
+	cat >cgitrc <<-EOF
+	virtual-root=/
+	cache-size=0
+	enable-filter-overrides=1
+	repo.url=fake
+	repo.path=$PWD/repos/fake/.git
+	repo.source-filter=lua:$EXTENSIONS_DIRECTORY/syntax-highlight.lua
+	EOF
+'
+
+test_expect_success CGIT_LUA 'the tree view is highlighted' '
+	cgit_url "fake/tree/hello.fake" >tmp &&
+	grep "<span class=.hl-keyword.>if</span>" tmp &&
+	grep "<span class=.hl-number.>42</span>" tmp
+'
+
+test_expect_success CGIT_LUA 'bytes between tokens reach the page escaped' '
+	grep "<span class=.hl-number.>42</span> &amp; " tmp
+'
+
+test_done