HTML MessagePort as mojo::MessagePipeHandle

content/browser/android/string_message_codec_unittest.cc

+// Copyright 2017 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 "content/browser/android/string_message_codec.h"
+
+#include "base/strings/utf_string_conversions.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "v8/include/v8.h"
+
+namespace content {
+namespace {
+
+base::string16 DecodeWithV8(const base::string16& encoded) {
+  base::string16 result;
+
+  v8::Isolate::CreateParams params;
+  params.array_buffer_allocator =
+      v8::ArrayBuffer::Allocator::NewDefaultAllocator();
+  v8::Isolate* isolate = v8::Isolate::New(params);
+  {
+    v8::HandleScope scope(isolate);
+    v8::TryCatch try_catch(isolate);
+
+    v8::Local<v8::Context> context = v8::Context::New(isolate);
+
+    v8::ValueDeserializer deserializer(
+        isolate,
+        reinterpret_cast<const uint8_t*>(encoded.data()),
+        encoded.size() * sizeof(base::char16));
+    deserializer.SetSupportsLegacyWireFormat(true);
+
+    EXPECT_TRUE(deserializer.ReadHeader(context).ToChecked());
+
+    v8::Local<v8::Value> value =
+        deserializer.ReadValue(context).ToLocalChecked();
+    v8::Local<v8::String> str = value->ToString(context).ToLocalChecked();
+
+    result.resize(str->Length());
+    str->Write(&result[0], 0, result.size());
+  }
+  isolate->Dispose();
+  delete params.array_buffer_allocator;
+
+  return result;
+}
+
+base::string16 EncodeWithV8(const base::string16& message) {
+  base::string16 result;
+
+  v8::Isolate::CreateParams params;
+  params.array_buffer_allocator =
+      v8::ArrayBuffer::Allocator::NewDefaultAllocator();
+  v8::Isolate* isolate = v8::Isolate::New(params);
+  {
+    v8::HandleScope scope(isolate);
+    v8::TryCatch try_catch(isolate);
+
+    v8::Local<v8::Context> context = v8::Context::New(isolate);
+
+    v8::Local<v8::String> message_as_value =
+        v8::String::NewFromTwoByte(isolate,
+                                   message.data(),
+                                   v8::NewStringType::kNormal,
+                                   message.size()).ToLocalChecked();
+
+    v8::ValueSerializer serializer(isolate);
+    serializer.WriteHeader();
+    EXPECT_TRUE(serializer.WriteValue(context, message_as_value).ToChecked());
+
+    std::pair<uint8_t*, size_t> buffer = serializer.Release();
+
+    size_t result_num_bytes = (buffer.second + 1) & ~1;
+    result.resize(result_num_bytes / 2);
+    memcpy(reinterpret_cast<uint8_t*>(&result[0]), buffer.first, buffer.second);
+
+    free(buffer.first);
+  }
+  isolate->Dispose();
+  delete params.array_buffer_allocator;
+
+  return result;
+}
+
+TEST(StringMessageCodecTest, SelfTest_ASCII) {
+  base::string16 message = base::ASCIIToUTF16("hello");
+  base::string16 decoded;
+  EXPECT_TRUE(DecodeStringMessage(EncodeStringMessage(message), &decoded));
+  EXPECT_EQ(message, decoded);
+}
+
+TEST(StringMessageCodecTest, SelfTest_NonASCII) {
+  base::string16 message = base::WideToUTF16(L"hello \u263A");
+  base::string16 decoded;
+  EXPECT_TRUE(DecodeStringMessage(EncodeStringMessage(message), &decoded));
+  EXPECT_EQ(message, decoded);
+}
+
+TEST(StringMessageCodecTest, SelfTest_NonASCIILongEnoughToForcePadding) {
+  base::string16 message;
+  for (int i = 0; i < 200; ++i)
+    message.push_back(base::char16(0x263A));

[jbroman, 2017/02/06 15:53:21]

nit: equivalently,

base::string16 message(200, 0x263A);

+  base::string16 decoded;
+  EXPECT_TRUE(DecodeStringMessage(EncodeStringMessage(message), &decoded));
+  EXPECT_EQ(message, decoded);
+}
+
+TEST(StringMessageCodecTest, SelfToV8Test_ASCII) {
+  base::string16 message = base::ASCIIToUTF16("hello");
+  EXPECT_EQ(message, DecodeWithV8(EncodeStringMessage(message)));
+}
+
+TEST(StringMessageCodecTest, SelfToV8Test_NonASCII) {
+  base::string16 message = base::WideToUTF16(L"hello \u263A");
+  EXPECT_EQ(message, DecodeWithV8(EncodeStringMessage(message)));
+}
+
+TEST(StringMessageCodecTest, SelfToV8Test_NonASCIILongEnoughToForcePadding) {
+  base::string16 message;

[jbroman, 2017/02/06 15:53:21]

nit: equivalently,

base::string16 message(200, 0x263A);

+  for (int i = 0; i < 200; ++i)
+    message.push_back(base::char16(0x263A));
+  EXPECT_EQ(message, DecodeWithV8(EncodeStringMessage(message)));
+}
+
+TEST(StringMessageCodecTest, V8ToSelfTest_ASCII) {
+  base::string16 message = base::ASCIIToUTF16("hello");
+  base::string16 decoded;
+  EXPECT_TRUE(DecodeStringMessage(EncodeWithV8(message), &decoded));
+  EXPECT_EQ(message, decoded);
+}
+
+TEST(StringMessageCodecTest, V8ToSelfTest_NonASCII) {
+  base::string16 message = base::WideToUTF16(L"hello \u263A");
+  base::string16 decoded;
+  EXPECT_TRUE(DecodeStringMessage(EncodeWithV8(message), &decoded));
+  EXPECT_EQ(message, decoded);
+}
+
+TEST(StringMessageCodecTest, V8ToSelfTest_NonASCIILongEnoughToForcePadding) {
+  base::string16 message;
+  for (int i = 0; i < 200; ++i)
+    message.push_back(base::char16(0x263A));
+  base::string16 decoded;
+  EXPECT_TRUE(DecodeStringMessage(EncodeWithV8(message), &decoded));
+  EXPECT_EQ(message, decoded);
+}
+
+}  // namespace
+}  // namespace content