In-te-grate hy-phen-ator to con-tent.

content/renderer/hyphenator/hyphenator_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 "content/renderer/hyphenator/hyphenator.h"
 
 #include "base/path_service.h"
 #include "base/platform_file.h"
 #include "base/utf_string_conversions.h"
+#include "content/common/hyphenator_messages.h"
+#include "content/public/test/mock_render_thread.h"
+#include "ipc/ipc_listener.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/hyphen/hyphen.h"
 
+namespace {
+
+// A mock message listener that listens for HyphenatorHost messages. This class
+// intercepts a HyphenatorHostMsg_OpenDictionary message sent to an
+// IPC::TestSink object and emulates the HyphenatorMessageFilter class.
+class MockListener : public IPC::Listener {
+ public:
+  MockListener(content::Hyphenator* hyphenator, const string16& locale)
+      : hyphenator_(hyphenator),
+        locale_(locale) {
+  }
+  virtual ~MockListener() {
+  }
+
+  // IPC::ChannelProxy::MessageFilter implementation.
+  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE {
+    if (message.type() != HyphenatorHostMsg_OpenDictionary::ID)
+      return false;
+
+    // Retrieve the locale parameter directly because HyphenatorHost messages
+    // are internal messages and unit tests cannot access its member functions,
+    // i.e. unit tests cannot call the HyphenatorHostMsg_OpenDictionary::Read
+    // function.
+    PickleIterator iter(message);
+    string16 locale;
+    EXPECT_TRUE(message.ReadString16(&iter, &locale));
+    EXPECT_EQ(locale_, locale);
+
+    // Open the default dictionary and call the OnControllMessageReceived
+    // function with a HyphenatorMsg_SetDictionary message.
+    FilePath dictionary_path;
+    if (!PathService::Get(base::DIR_SOURCE_ROOT, &dictionary_path))
+      return false;
+    dictionary_path = dictionary_path.AppendASCII("third_party");
+    dictionary_path = dictionary_path.AppendASCII("hyphen");
+    dictionary_path = dictionary_path.AppendASCII("hyph_en_US.dic");
+    base::PlatformFile file = base::CreatePlatformFile(
+        dictionary_path, base::PLATFORM_FILE_OPEN | base::PLATFORM_FILE_READ,
+        NULL, NULL);
+    EXPECT_NE(base::kInvalidPlatformFileValue, file);
+
+    IPC::Message response(
+        0, HyphenatorMsg_SetDictionary::ID, IPC::Message::PRIORITY_NORMAL);
+    IPC::PlatformFileForTransit transit = IPC::GetFileHandleForProcess(
+        file, GetHandle(), false);
+    IPC::ParamTraits<IPC::PlatformFileForTransit>::Write(&response, transit);
+    hyphenator_->OnControlMessageReceived(response);
+    base::ClosePlatformFile(file);
+    return true;
+  }
+
+ private:
+  base::ProcessHandle GetHandle() const {
+    return base::Process::Current().handle();
+  }
+
+  content::Hyphenator* hyphenator_;
+  string16 locale_;
+};
+
+}  // namespace
+
 // A unit test for our hyphenator. This class loads a sample hyphenation
 // dictionary and hyphenates words.
 class HyphenatorTest : public testing::Test {
  public:
   HyphenatorTest() {
-    Initialize();
   }
 
   bool Initialize() {
     FilePath dictionary_path;
     if (!PathService::Get(base::DIR_SOURCE_ROOT, &dictionary_path))
       return false;
     dictionary_path = dictionary_path.AppendASCII("third_party");
     dictionary_path = dictionary_path.AppendASCII("hyphen");
     dictionary_path = dictionary_path.AppendASCII("hyph_en_US.dic");
     base::PlatformFile file = base::CreatePlatformFile(
@@ skipping 13 matching lines @@
       size_t new_position = hyphenator_->ComputeLastHyphenLocation(word,
                                                                    position);
       EXPECT_LT(new_position, position);
       if (new_position > 0)
         hyphenated_word.insert(new_position, 1, '-');
       position = new_position;
     }
     return hyphenated_word;
   }
 
+  bool OpenDictionary(const string16& locale) {
+    hyphenator_.reset(new content::Hyphenator(base::kInvalidPlatformFileValue));
+    thread_.reset(new content::MockRenderThread());
+    listener_.reset(new MockListener(hyphenator_.get(), locale));
+    thread_->sink().AddFilter(listener_.get());
+    return hyphenator_->Attach(thread_.get(), locale);
+  }
+
+  size_t GetMessageCount() const {
+    return thread_->sink().message_count();
+  }
+
  private:
   scoped_ptr<content::Hyphenator> hyphenator_;
+  scoped_ptr<content::MockRenderThread> thread_;
+  scoped_ptr<MockListener> listener_;
 };
 
 // Verifies that our hyphenator yields the same hyphenated words as the original
 // hyphen library does.
 TEST_F(HyphenatorTest, HyphenateWords) {
   static const struct {
     const char* input;
     const char* expected;
   } kTestCases[] = {
     { "and", "and" },
@@ skipping 11 matching lines @@
     { "comfortably", "com-fort-ably"},
     { "declination", "dec-li-na-tion" },
     { "flamingo:", "flamin-go:" },
     { "lination", "lina-tion" },
     { "reciprocity", "rec-i-proc-i-ty" },
     { "throughout", "through-out" },
     { "undid", "un-did" },
     { "undone.", "un-done." },
     { "unnecessary", "un-nec-es-sary" },
   };
+  Initialize();
   for (size_t i = 0; i < ARRAYSIZE_UNSAFE(kTestCases); ++i) {
     string16 input = ASCIIToUTF16(kTestCases[i].input);
     string16 expected = ASCIIToUTF16(kTestCases[i].expected);
     EXPECT_EQ(expected, Hyphenate(input));
   }
 }
+
+// Verifies that our hyphenator sends a HyphenatorHostMsg_OpenDictionary
+// message to ask a browser to open a dictionary. Also, this test verifies that
+// our hyphenator can hyphnate words when the Hyphenator::SetDictionary function
+// is called.
+TEST_F(HyphenatorTest, openDictionary) {
+  // Send a HyphenatorHostMsg_OpenDictionary message and verify it is handled by
+  // our MockListner class.
+  EXPECT_TRUE(OpenDictionary(string16()));
+  EXPECT_EQ(0U, GetMessageCount());
+
+  // Verify that we can now hyphenate words. When the MockListener class
+  // receives a HyphenatorHostMsg_OpenDictionary message, it calls the
+  // OnControlMessageReceived function with a HyphenatorMsg_SetDictionary
+  // message. So, the Hyphenate function should be able to hyphenate words now.
+  string16 input = ASCIIToUTF16("hyphenation");
+  string16 expected = ASCIIToUTF16("hy-phen-ation");
+  EXPECT_EQ(expected, Hyphenate(input));
+}