1 files changed, 48 insertions, 0 deletions
diff --git a/hugofs/filter_fs_test.go b/hugofs/filter_fs_test.go
new file mode 100644
index 000000000..cc9a5e044
--- /dev/null
+++ b/hugofs/filter_fs_test.go
@@ -0,0 +1,48 @@
+// Copyright 2019 The Hugo Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package hugofs
+
+import (
+	"path/filepath"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestLangInfoFrom(t *testing.T) {
+
+	langs := map[string]int{
+		"sv": 10,
+		"en": 20,
+	}
+
+	assert := require.New(t)
+
+	tests := []struct {
+		input    string
+		expected []string
+	}{
+		{"page.sv.md", []string{"sv", "page", "page.md"}},
+		{"page.en.md", []string{"en", "page", "page.md"}},
+		{"page.no.md", []string{"", "page.no", "page.no.md"}},
+		{filepath.FromSlash("tc-lib-color/class-Com.Tecnick.Color.Css"), []string{"", "class-Com.Tecnick.Color", "class-Com.Tecnick.Color.Css"}},
+		{filepath.FromSlash("class-Com.Tecnick.Color.sv.Css"), []string{"sv", "class-Com.Tecnick.Color", "class-Com.Tecnick.Color.Css"}},
+	}
+
+	for _, test := range tests {
+		v1, v2, v3 := langInfoFrom(langs, test.input)
+		assert.Equal(test.expected, []string{v1, v2, v3})
+	}
+
+}