Add FakeClipboard implementation for unit tests.

ui/base/clipboard/clipboard_unittest.cc

 // Copyright (c) 2012 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 "build/build_config.h"
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 78 matching lines @@
   static Clipboard* Create() {
     return Clipboard::GetForCurrentThread();
   }
 
   static void Destroy(Clipboard* clipboard) {
     ASSERT_EQ(Clipboard::GetForCurrentThread(), clipboard);
     Clipboard::DestroyClipboardForCurrentThread();
   }
 };
 
-TYPED_TEST_CASE(ClipboardTest, PlatformClipboardTraits);
+struct FakeClipboardTraits {

[sky, 2014/11/14 02:10:31]

TestClipboardTraits

[dcheng, 2014/11/14 03:30:28]

Done.

+  static Clipboard* Create() {
+    Clipboard::UseFakeForCurrentThreadForTest();
+    return Clipboard::GetForCurrentThread();
+  }
+
+  static void Destroy(Clipboard* clipboard) {
+    ASSERT_EQ(Clipboard::GetForCurrentThread(), clipboard);
+    Clipboard::DestroyClipboardForCurrentThread();
+  }
+};
+
+typedef ::testing::Types<PlatformClipboardTraits, FakeClipboardTraits>
+    ClipboardTypes;
+TYPED_TEST_CASE(ClipboardTest, ClipboardTypes);
 
 TYPED_TEST(ClipboardTest, ClearTest) {
   {
     ScopedClipboardWriter clipboard_writer(CLIPBOARD_TYPE_COPY_PASTE);
     clipboard_writer.WriteText(ASCIIToUTF16("clear me"));
   }
 
   this->clipboard().Clear(CLIPBOARD_TYPE_COPY_PASTE);
 
   EXPECT_FALSE(this->clipboard().IsFormatAvailable(
@@ skipping 697 matching lines @@
       Clipboard::GetPlainTextWFormatType(), CLIPBOARD_TYPE_COPY_PASTE));
 
   // Make sure the text is what we inserted while simulating the other app
   std::string contents;
   this->clipboard().ReadAsciiText(CLIPBOARD_TYPE_COPY_PASTE, &contents);
   EXPECT_EQ(contents, new_value);
 }
 #endif
 
 }  // namespace ui