Mojo C++ bindings: introduce mojo::WTFMap for blink bindings.

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

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// 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/wtf_map.h"
+
+#include "mojo/public/cpp/bindings/lib/wtf_serialization.h"
+#include "mojo/public/cpp/bindings/tests/container_test_util.h"
+#include "mojo/public/cpp/bindings/tests/map_common_test.h"
+#include "mojo/public/cpp/bindings/wtf_array.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "third_party/WebKit/Source/wtf/text/WTFString.h"
+
+namespace mojo {
+namespace test {
+
+namespace {
+
+using WTFMapTest = testing::Test;
+
+MAP_COMMON_TEST(WTFMap, NullAndEmpty)
+MAP_COMMON_TEST(WTFMap, InsertWorks)
+MAP_COMMON_TEST(WTFMap, TestIndexOperator)
+MAP_COMMON_TEST(WTFMap, TestIndexOperatorAsRValue)
+MAP_COMMON_TEST(WTFMap, TestIndexOperatorMoveOnly)
+MAP_COMMON_TEST(WTFMap, MapArrayClone)
+MAP_COMMON_TEST(WTFMap, ArrayOfMap)
+
+TEST_F(WTFMapTest, MoveFromAndToWTFHashMap_Copyable) {
+  WTF::HashMap<int32_t, CopyableType> map1;
+  map1.add(123, CopyableType());
+  map1.find(123)->value.ResetCopied();
+  ASSERT_FALSE(map1.find(123)->value.copied());
+
+  WTFMap<int32_t, CopyableType> mojo_map(std::move(map1));
+  ASSERT_EQ(1u, mojo_map.size());
+  ASSERT_NE(mojo_map.end(), mojo_map.find(123));
+  ASSERT_FALSE(mojo_map[123].copied());
+
+  WTF::HashMap<int32_t, CopyableType> map2(mojo_map.PassStorage());
+  ASSERT_EQ(1u, map2.size());
+  ASSERT_NE(map2.end(), map2.find(123));
+  ASSERT_FALSE(map2.find(123)->value.copied());
+
+  ASSERT_EQ(0u, mojo_map.size());
+  ASSERT_TRUE(mojo_map.is_null());
+}
+
+TEST_F(WTFMapTest, MoveFromAndToWTFHashMap_MoveOnly) {
+  WTF::HashMap<int32_t, MoveOnlyType> map1;
+  map1.add(123, MoveOnlyType());
+
+  WTFMap<int32_t, MoveOnlyType> mojo_map(std::move(map1));
+  ASSERT_EQ(1u, mojo_map.size());
+  ASSERT_NE(mojo_map.end(), mojo_map.find(123));
+
+  WTF::HashMap<int32_t, MoveOnlyType> map2(mojo_map.PassStorage());
+  ASSERT_EQ(1u, map2.size());
+  ASSERT_NE(map2.end(), map2.find(123));
+
+  ASSERT_EQ(0u, mojo_map.size());
+  ASSERT_TRUE(mojo_map.is_null());
+}
+
+}  // namespace
+}  // namespace test
+}  // namespace mojo