V8ObjectBuilder::addString support Nullable.

third_party/WebKit/Source/bindings/core/v8/V8ObjectBuilderTest.cpp

+// 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 "bindings/core/v8/V8ObjectBuilder.h"
+
+#include "bindings/core/v8/V8Binding.h"
+#include "bindings/core/v8/V8BindingForTesting.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace blink {
+
+namespace {
+
+TEST(V8ObjectBuilderTest, addString) {

[Yuki, 2016/11/09 12:17:18]

nit: I'd suggest to sort the test cases in the same order as *.h
i.e. addNull, addBoolean, addNumber, ...

+  V8TestingScope scope;
+  {

[Yuki, 2016/11/09 12:17:18]

nit: You don't need to create a new block.
Without this block, V8TestingScope works fine.

+    ScriptState* scriptState = scope.getScriptState();
+    V8ObjectBuilder builder(scriptState);
+
+    WTF::String test1 = "test1";
+    WTF::String test2;
+    WTF::String test3 = "test3";
+    WTF::String test4;
+
+    builder.addString("test1", test1);
+    builder.addString("test2", test2);
+    builder.addStringOrNull("test3", test3);
+    builder.addStringOrNull("test4", test4);
+    ScriptValue jsonObject = builder.scriptValue();
+    EXPECT_TRUE(jsonObject.isObject());
+
+    String jsonString = v8StringToWebCoreString<String>(
+        v8::JSON::Stringify(scope.context(),
+                            jsonObject.v8Value().As<v8::Object>())
+            .ToLocalChecked(),
+        DoNotExternalize);
+
+    String expected =
+        "{\"test1\":\"test1\",\"test2\":\"\",\"test3\":\"test3\",\"test4\":"
+        "null}";
+    EXPECT_EQ(expected, jsonString);
+  }
+}
+
+TEST(V8ObjectBuilderTest, addBoolean) {
+  V8TestingScope scope;
+  {
+    ScriptState* scriptState = scope.getScriptState();
+    V8ObjectBuilder builder(scriptState);
+    builder.addBoolean("b1", true);
+    builder.addBoolean("b2", false);
+    ScriptValue jsonObject = builder.scriptValue();
+    EXPECT_TRUE(jsonObject.isObject());
+
+    String jsonString = v8StringToWebCoreString<String>(
+        v8::JSON::Stringify(scope.context(),
+                            jsonObject.v8Value().As<v8::Object>())
+            .ToLocalChecked(),
+        DoNotExternalize);
+
+    String expected = "{\"b1\":true,\"b2\":false}";
+    EXPECT_EQ(expected, jsonString);
+  }
+}
+
+TEST(V8ObjectBuilderTest, addNumber) {
+  V8TestingScope scope;
+  {
+    ScriptState* scriptState = scope.getScriptState();
+    V8ObjectBuilder builder(scriptState);
+    builder.addNumber("n1", 123);
+    builder.addNumber("n2", 123.456);
+    ScriptValue jsonObject = builder.scriptValue();
+    EXPECT_TRUE(jsonObject.isObject());
+
+    String jsonString = v8StringToWebCoreString<String>(
+        v8::JSON::Stringify(scope.context(),
+                            jsonObject.v8Value().As<v8::Object>())
+            .ToLocalChecked(),
+        DoNotExternalize);
+
+    String expected = "{\"n1\":123,\"n2\":123.456}";
+    EXPECT_EQ(expected, jsonString);
+  }
+}
+
+TEST(V8ObjectBuilderTest, addNull) {
+  V8TestingScope scope;
+  {
+    ScriptState* scriptState = scope.getScriptState();
+    V8ObjectBuilder builder(scriptState);
+    builder.addNull("null_check");
+    ScriptValue jsonObject = builder.scriptValue();
+    EXPECT_TRUE(jsonObject.isObject());
+
+    String jsonString = v8StringToWebCoreString<String>(
+        v8::JSON::Stringify(scope.context(),
+                            jsonObject.v8Value().As<v8::Object>())
+            .ToLocalChecked(),
+        DoNotExternalize);
+
+    String expected = "{\"null_check\":null}";
+    EXPECT_EQ(expected, jsonString);
+  }
+}
+
+TEST(V8ObjectBuilderTest, add) {
+  V8TestingScope scope;
+  {
+    ScriptState* scriptState = scope.getScriptState();
+    V8ObjectBuilder builder(scriptState);
+    V8ObjectBuilder result(scriptState);
+    builder.addNumber("n1", 123);
+    builder.addNumber("n2", 123.456);
+    result.add("builder", builder);
+    ScriptValue builderJsonObject = builder.scriptValue();
+    ScriptValue resultJsonObject = result.scriptValue();
+    EXPECT_TRUE(builderJsonObject.isObject());
+    EXPECT_TRUE(resultJsonObject.isObject());
+
+    String jsonString = v8StringToWebCoreString<String>(
+        v8::JSON::Stringify(scope.context(),
+                            resultJsonObject.v8Value().As<v8::Object>())
+            .ToLocalChecked(),
+        DoNotExternalize);
+
+    String expected = "{\"builder\":{\"n1\":123,\"n2\":123.456}}";
+    EXPECT_EQ(expected, jsonString);
+  }
+}
+
+}  // namespace
+
+}  // namespace blink