Mojo: Support enums as map keys in WTF

mojo/public/cpp/bindings/tests/wtf_map_unittest.cc

+// Copyright 2016 The Chromium Authors. All rights reserved.

[yzshen1, 2017/03/02 17:25:03]

2017?

[tibell, 2017/03/02 23:16:50]

Done.

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "mojo/public/cpp/bindings/tests/rect_blink.h"
+#include "mojo/public/interfaces/bindings/tests/rect.mojom-blink.h"
+#include "mojo/public/interfaces/bindings/tests/test_structs.mojom-blink.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace mojo {
+namespace test {
+namespace {
+
+TEST(WTFMapTest, StructKey) {
+  WTF::HashMap<blink::RectPtr, int32_t> map;
+  map.insert(blink::Rect::New(1, 2, 3, 4), 123);
+
+  blink::RectPtr key = blink::Rect::New(1, 2, 3, 4);
+  ASSERT_NE(map.end(), map.find(key));
+  ASSERT_EQ(123, map.find(key)->value);
+
+  map.remove(key);
+  ASSERT_EQ(0u, map.size());
+}
+
+TEST(WTFMapTest, TypemappedStructKey) {
+  WTF::HashMap<blink::ContainsHashablePtr, int32_t> map;
+  map.insert(blink::ContainsHashable::New(RectBlink(1, 2, 3, 4)), 123);
+
+  blink::ContainsHashablePtr key =
+      blink::ContainsHashable::New(RectBlink(1, 2, 3, 4));
+  ASSERT_NE(map.end(), map.find(key));
+  ASSERT_EQ(123, map.find(key)->value);
+
+  map.remove(key);
+  ASSERT_EQ(0u, map.size());
+}
+
+}  // namespace
+}  // namespace test
+}  // namespace mojo