Create direct write font proxy classes and unit tests.

content/browser/renderer_host/dwrite_font_proxy_message_filter_win_unittest.cc

Index: content/browser/renderer_host/dwrite_font_proxy_message_filter_win_unittest.cc
diff --git a/content/browser/renderer_host/dwrite_font_proxy_message_filter_win_unittest.cc b/content/browser/renderer_host/dwrite_font_proxy_message_filter_win_unittest.cc
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index 0000000000000000000000000000000000000000..dd61b263fb767da8572c2f42f351498e08187551
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+++ b/content/browser/renderer_host/dwrite_font_proxy_message_filter_win_unittest.cc
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+// Copyright 2015 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/renderer_host/dwrite_font_proxy_message_filter_win.h"
+
+#include <dwrite.h>
+
+#include "base/memory/ref_counted.h"
+#include "base/run_loop.h"
+#include "base/test/test_simple_task_runner.h"
+#include "base/thread_task_runner_handle.h"
+#include "content/common/dwrite_font_proxy_messages.h"
+#include "content/public/test/test_browser_thread_bundle.h"
+#include "ipc/ipc_message_macros.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace mswr = Microsoft::WRL;
+
+namespace content {
+
+class FilterWithFakeSender : public DWriteFontProxyMessageFilter {
+ public:
+  bool Send(IPC::Message* msg) override {
+    EXPECT_EQ(nullptr, reply_message_.get());
+    reply_message_.reset(msg);
+    return true;
+  }
+
+  IPC::Message* GetReply() { return reply_message_.get(); }
+
+  void ResetReply() { reply_message_.reset(nullptr); }
+
+ private:
+  scoped_ptr<IPC::Message> reply_message_;
+};
+
+class DWriteFontProxyMessageFilterUnitTest : public testing::Test {
+ public:
+  DWriteFontProxyMessageFilterUnitTest() {
+    filter_ = new FilterWithFakeSender();
+  }
+
+  void Send(IPC::SyncMessage* message) {
+    std::unique_ptr<IPC::SyncMessage> deleter(message);
+    scoped_ptr<IPC::MessageReplyDeserializer> serializer(
+        message->GetReplyDeserializer());
+    filter_->OnMessageReceived(*message);
+    base::RunLoop().RunUntilIdle();
+    ASSERT_NE(nullptr, filter_->GetReply());
+    serializer->SerializeOutputParameters(*(filter_->GetReply()));
+  }
+
+  scoped_refptr<FilterWithFakeSender> filter_;
+  content::TestBrowserThreadBundle thread_bundle_;
+};
+
+TEST_F(DWriteFontProxyMessageFilterUnitTest, GetFamilyCount) {
+  uint32 family_count = 0;
+  Send(new DWriteFontProxyMsg_GetFamilyCount(&family_count));
+  EXPECT_NE(0u, family_count);  // Assume there's some fonts on the test system.
+}
+
+TEST_F(DWriteFontProxyMessageFilterUnitTest, FindFamily) {
+  uint32 arial_index = 0;
+  Send(new DWriteFontProxyMsg_FindFamily(L"Arial", &arial_index));
+  EXPECT_NE(UINT_MAX, arial_index);
+
+  filter_->ResetReply();
+  uint32 times_index = 0;
+  Send(new DWriteFontProxyMsg_FindFamily(L"Times New Roman", &times_index));
+  EXPECT_NE(UINT_MAX, times_index);
+  EXPECT_NE(arial_index, times_index);
+
+  filter_->ResetReply();
+  uint32 unknown_index = 0;
+  Send(new DWriteFontProxyMsg_FindFamily(L"Not a font family", &unknown_index));
+  EXPECT_EQ(UINT_MAX, unknown_index);
+}
+
+TEST_F(DWriteFontProxyMessageFilterUnitTest, GetFamilyNames) {
+  uint32 arial_index = 0;
+  Send(new DWriteFontProxyMsg_FindFamily(L"Arial", &arial_index));
+  filter_->ResetReply();
+
+  std::vector<StringPair> names;
+  Send(new DWriteFontProxyMsg_GetFamilyNames(arial_index, &names));
+
+  EXPECT_LT(0u, names.size());
+  for (auto& pair : names) {

[Alexei Svitkine (slow), 2015/11/24 16:42:36]

Nit: const

[Ilya Kulshin, 2015/11/25 02:40:48]

Done.

+    EXPECT_STRNE(L"", pair.first.c_str());
+    EXPECT_STRNE(L"", pair.second.c_str());
+  }
+}
+
+TEST_F(DWriteFontProxyMessageFilterUnitTest, GetFamilyNamesIndexOutOfBounds) {
+  std::vector<StringPair> names;
+  uint32 invalid_index = 1000000;
+  Send(new DWriteFontProxyMsg_GetFamilyNames(invalid_index, &names));
+
+  EXPECT_EQ(0u, names.size());
+}
+
+TEST_F(DWriteFontProxyMessageFilterUnitTest, GetFontFiles) {
+  uint32 arial_index = 0;
+  Send(new DWriteFontProxyMsg_FindFamily(L"Arial", &arial_index));
+  filter_->ResetReply();
+
+  std::vector<base::string16> files;
+  Send(new DWriteFontProxyMsg_GetFontFiles(arial_index, &files));
+
+  EXPECT_LT(0u, files.size());
+  for (base::string16& file : files) {

[Alexei Svitkine (slow), 2015/11/24 16:42:36]

Nit: const

[Ilya Kulshin, 2015/11/25 02:40:48]

Done.

+    EXPECT_STRNE(L"", file.c_str());
+  }
+}
+
+TEST_F(DWriteFontProxyMessageFilterUnitTest, GetFontFilesIndexOutOfBounds) {
+  std::vector<base::string16> files;
+  uint32 invalid_index = 1000000;
+  Send(new DWriteFontProxyMsg_GetFontFiles(invalid_index, &files));
+
+  EXPECT_EQ(0u, files.size());
+}
+
+}  // namespace content