Converts mash_wm_apptests to unit tests

mash/wm/window_manager_apptest.cc

-// 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 <stdint.h>
-#include <utility>
-
-#include "base/bind.h"
-#include "base/macros.h"
-#include "components/mus/public/cpp/window.h"
-#include "components/mus/public/cpp/window_tree_connection.h"
-#include "components/mus/public/cpp/window_tree_delegate.h"
-#include "components/mus/public/interfaces/window_tree.mojom.h"
-#include "mojo/shell/public/cpp/application_test_base.h"
-
-namespace mash {
-namespace wm {
-
-class WindowTreeDelegateImpl : public mus::WindowTreeDelegate {
- public:
-  WindowTreeDelegateImpl() {}
-  ~WindowTreeDelegateImpl() override {}
-
- private:
-  // mus::WindowTreeDelegate:
-  void OnEmbed(mus::Window* root) override {}
-  void OnConnectionLost(mus::WindowTreeConnection* connection) override {}
-
-  DISALLOW_COPY_AND_ASSIGN(WindowTreeDelegateImpl);
-};
-
-using WindowManagerAppTest = mojo::test::ApplicationTestBase;
-
-void OnEmbed(bool success) {
-  ASSERT_TRUE(success);
-}
-
-TEST_F(WindowManagerAppTest, OpenWindow) {
-  WindowTreeDelegateImpl window_tree_delegate;
-
-  // Bring up the the desktop_wm.
-  connector()->Connect("mojo:desktop_wm");
-
-  // Connect to mus and create a new top level window. The request goes to
-  // the |desktop_wm|, but is async.
-  scoped_ptr<mus::WindowTreeConnection> connection(
-      mus::WindowTreeConnection::Create(&window_tree_delegate, connector()));
-  mus::Window* top_level_window = connection->NewTopLevelWindow(nullptr);
-  ASSERT_TRUE(top_level_window);
-  mus::Window* child_window = connection->NewWindow();
-  ASSERT_TRUE(child_window);
-  top_level_window->AddChild(child_window);
-
-  // Create another WindowTreeConnection by way of embedding in
-  // |child_window|. This blocks until it succeeds.
-  mus::mojom::WindowTreeClientPtr tree_client;
-  auto tree_client_request = GetProxy(&tree_client);
-  child_window->Embed(std::move(tree_client), base::Bind(&OnEmbed));
-  scoped_ptr<mus::WindowTreeConnection> child_connection(
-      mus::WindowTreeConnection::Create(
-          &window_tree_delegate, std::move(tree_client_request),
-          mus::WindowTreeConnection::CreateType::WAIT_FOR_EMBED));
-  ASSERT_TRUE(!child_connection->GetRoots().empty());
-}
-
-}  // namespace wm
-}  // namespace mash