base/win/message_window_unittest.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/bind.h"
   6 #include "base/guid.h"
   7 #include "base/strings/utf_string_conversions.h"
   8 #include "base/win/message_window.h"
   9 #include "testing/gmock/include/gmock/gmock.h"
  10 #include "testing/gtest/include/gtest/gtest.h"
  11
  12 namespace base {
  13
  14 namespace {
  15
  16 bool HandleMessage(
  17     UINT message, WPARAM wparam, LPARAM lparam, LRESULT* result) {
  18   // Return |wparam| as the result of WM_USER message.
  19   if (message == WM_USER) {
  20     *result = wparam;
  21     return true;
  22   }
  23
  24   return false;
  25 }
  26
  27 }  // namespace
  28
  29 // Checks that a window can be created.
  30 TEST(MessageWindowTest, Create) {
  31   win::MessageWindow window;
  32   EXPECT_TRUE(window.Create(base::Bind(&HandleMessage)));
  33 }
  34
  35 // Checks that a named window can be created.
  36 TEST(MessageWindowTest, CreateNamed) {
  37   win::MessageWindow window;
  38   EXPECT_TRUE(window.CreateNamed(base::Bind(&HandleMessage),
  39               UTF8ToUTF16("test_message_window")));
  40 }
  41
  42 // Verifies that the created window can receive messages.
  43 TEST(MessageWindowTest, SendMessage) {
  44   win::MessageWindow window;
  45   EXPECT_TRUE(window.Create(base::Bind(&HandleMessage)));
  46
  47   EXPECT_EQ(SendMessage(window.hwnd(), WM_USER, 100, 0), 100);
  48 }
  49
  50 // Verifies that a named window can be found by name.
  51 TEST(MessageWindowTest, FindWindow) {
  52   string16 name = UTF8ToUTF16(base::GenerateGUID());
  53   win::MessageWindow window;
  54   EXPECT_TRUE(window.CreateNamed(base::Bind(&HandleMessage), name));
  55
  56   HWND hwnd = win::MessageWindow::FindWindow(name);
  57   EXPECT_TRUE(hwnd != NULL);
  58   EXPECT_EQ(SendMessage(hwnd, WM_USER, 200, 0), 200);
  59 }
  60
  61 }  // namespace base