ozone/platform/wayland: Add some tests

ui/ozone/platform/wayland/fake_server.h

Index: ui/ozone/platform/wayland/fake_server.h
diff --git a/ui/ozone/platform/wayland/fake_server.h b/ui/ozone/platform/wayland/fake_server.h
new file mode 100644
index 0000000000000000000000000000000000000000..befde1ccca2532c9ec2a2db97f50836f7337ecfb
--- /dev/null
+++ b/ui/ozone/platform/wayland/fake_server.h
@@ -0,0 +1,189 @@
+// Copyright 2016 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.
+
+#ifndef UI_OZONE_PLATFORM_WAYLAND_FAKE_SERVER_H_
+#define UI_OZONE_PLATFORM_WAYLAND_FAKE_SERVER_H_
+
+#include <wayland-server-core.h>
+
+#include "base/bind.h"
+#include "base/message_loop/message_pump_libevent.h"
+#include "base/synchronization/waitable_event.h"
+#include "base/threading/thread.h"
+#include "testing/gmock/include/gmock/gmock.h"
+
+struct wl_client;
+struct wl_display;
+struct wl_event_loop;
+struct wl_global;
+struct wl_resource;
+
+namespace wl {
+
+class ServerObject {
+ public:
+  ServerObject(wl_resource* resource);
+  virtual ~ServerObject();
+
+  wl_resource* resource() { return resource_; }
+
+  static void OnResourceDestroyed(wl_resource* resource);
+
+ private:
+  wl_resource* resource_;
+
+  DISALLOW_COPY_AND_ASSIGN(ServerObject);
+};
+
+class MockXdgSurface : public ServerObject {
+ public:
+  MockXdgSurface(wl_resource* resource);
+  ~MockXdgSurface() override;
+
+  MOCK_METHOD1(SetParent, void(wl_resource* parent));
+  MOCK_METHOD1(SetTitle, void(const char* title));
+  MOCK_METHOD1(SetAppId, void(const char* app_id));
+  MOCK_METHOD1(AckConfigure, void(uint32_t serial));
+  MOCK_METHOD0(SetMaximized, void());
+  MOCK_METHOD0(UnsetMaximized, void());
+  MOCK_METHOD0(SetMinimized, void());
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(MockXdgSurface);
+};
+
+class MockSurface : public ServerObject {
+ public:
+  MockSurface(wl_resource* resource);
+  ~MockSurface() override;
+
+  static MockSurface* FromResource(wl_resource* resource);
+
+  MOCK_METHOD3(Attach, void(wl_resource* buffer, int32_t x, int32_t y));
+  MOCK_METHOD4(Damage,
+               void(int32_t x, int32_t y, int32_t width, int32_t height));
+  MOCK_METHOD0(Commit, void());
+
+  scoped_ptr<MockXdgSurface> xdg_surface;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(MockSurface);
+};
+
+struct GlobalDeleter {
+  void operator()(wl_global* global);
+};
+
+class Global {
+ public:
+  Global(const wl_interface* interface,
+         const void* implementation,
+         uint32_t version);
+  virtual ~Global();
+
+  bool Initialize(wl_display* display);
+
+  // The first bound resource to this global, which is usually all that is
+  // useful when testing a simple client.
+  wl_resource* resource() { return resource_; }
+
+  static void Bind(wl_client* client,
+                   void* data,
+                   uint32_t version,
+                   uint32_t id);
+  static void OnResourceDestroyed(wl_resource* resource);
+
+ private:
+  scoped_ptr<wl_global, GlobalDeleter> global_;
+
+  const wl_interface* interface_;
+  const void* implementation_;
+  const uint32_t version_;
+  wl_resource* resource_ = nullptr;
+
+  DISALLOW_COPY_AND_ASSIGN(Global);
+};
+
+class MockCompositor : public Global {
+ public:
+  MockCompositor();
+  ~MockCompositor() override;
+
+  void AddSurface(scoped_ptr<MockSurface> surface);
+
+ private:
+  std::vector<scoped_ptr<MockSurface>> surfaces_;
+
+  DISALLOW_COPY_AND_ASSIGN(MockCompositor);
+};
+
+class MockXdgShell : public Global {
+ public:
+  MockXdgShell();
+  ~MockXdgShell() override;
+
+  MOCK_METHOD1(UseUnstableVersion, void(int32_t version));
+  MOCK_METHOD1(Pong, void(uint32_t serial));
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(MockXdgShell);
+};
+
+struct DisplayDeleter {
+  void operator()(wl_display* display);
+};
+
+class FakeServer : public base::Thread, base::MessagePumpLibevent::Watcher {
+ public:
+  FakeServer();
+  ~FakeServer() override;
+
+  // Start the fake Wayland server. If this succeeds, the WAYLAND_SOCKET
+  // environment variable will be set to the string representation of a file
+  // descriptor that a client can connect to. The caller is responsible for
+  // ensuring that this file descriptor gets closed (for example, by calling
+  // wl_display_connect).
+  bool Start();
+
+  void Flush();
+
+  void Pause();
+  void Resume();
+
+  template <typename T>
+  T* GetObject(uint32_t id) {
+    wl_resource* resource = wl_client_get_object(client_, id);
+    return resource ? T::FromResource(resource) : nullptr;
+  }
+
+  MockXdgShell* xdg_shell() { return &xdg_shell_; }
+
+ private:
+  void DoPause();
+
+  scoped_ptr<base::MessagePump> CreateMessagePump();
+
+  // base::MessagePumpLibevent::Watcher
+  void OnFileCanReadWithoutBlocking(int fd) override;
+  void OnFileCanWriteWithoutBlocking(int fd) override;
+
+  scoped_ptr<wl_display, DisplayDeleter> display_;
+  wl_client* client_ = nullptr;
+  wl_event_loop* event_loop_ = nullptr;
+
+  base::WaitableEvent pause_event_;
+  base::WaitableEvent resume_event_;
+  bool paused_ = false;
+
+  MockCompositor compositor_;
+  MockXdgShell xdg_shell_;
+
+  base::MessagePumpLibevent::FileDescriptorWatcher controller_;
+
+  DISALLOW_COPY_AND_ASSIGN(FakeServer);
+};
+
+}  // namespace wl
+
+#endif  // UI_OZONE_PLATFORM_WAYLAND_FAKE_SERVER_H_