1 files changed, 72 insertions, 0 deletions
diff --git a/common/maps/maps_test.go b/common/maps/maps_test.go
new file mode 100644
index 000000000..37add5dc5
--- /dev/null
+++ b/common/maps/maps_test.go
@@ -0,0 +1,72 @@
+// Copyright 2018 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 maps
+
+import (
+	"reflect"
+	"testing"
+)
+
+func TestToLower(t *testing.T) {
+
+	tests := []struct {
+		input    map[string]interface{}
+		expected map[string]interface{}
+	}{
+		{
+			map[string]interface{}{
+				"abC": 32,
+			},
+			map[string]interface{}{
+				"abc": 32,
+			},
+		},
+		{
+			map[string]interface{}{
+				"abC": 32,
+				"deF": map[interface{}]interface{}{
+					23: "A value",
+					24: map[string]interface{}{
+						"AbCDe": "A value",
+						"eFgHi": "Another value",
+					},
+				},
+				"gHi": map[string]interface{}{
+					"J": 25,
+				},
+			},
+			map[string]interface{}{
+				"abc": 32,
+				"def": map[string]interface{}{
+					"23": "A value",
+					"24": map[string]interface{}{
+						"abcde": "A value",
+						"efghi": "Another value",
+					},
+				},
+				"ghi": map[string]interface{}{
+					"j": 25,
+				},
+			},
+		},
+	}
+
+	for i, test := range tests {
+		// ToLower modifies input.
+		ToLower(test.input)
+		if !reflect.DeepEqual(test.expected, test.input) {
+			t.Errorf("[%d] Expected\n%#v, got\n%#v\n", i, test.expected, test.input)
+		}
+	}
+}