Window prerequisites for ShelfWindowWatcher panel support.

components/exo/shell_surface_unittest.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 "ash/aura/wm_window_aura.h"
 #include "ash/common/accessibility_delegate.h"
 #include "ash/common/wm/window_state.h"
 #include "ash/common/wm/wm_event.h"
 #include "ash/common/wm_shell.h"
 #include "ash/public/cpp/shell_window_ids.h"
@@ skipping 185 matching lines @@
   std::unique_ptr<ShellSurface> shell_surface(new ShellSurface(surface.get()));
 
   shell_surface->SetTitle(base::string16(base::ASCIIToUTF16("test")));
   surface->Commit();
 }
 
 TEST_F(ShellSurfaceTest, SetApplicationId) {
   std::unique_ptr<Surface> surface(new Surface);
   std::unique_ptr<ShellSurface> shell_surface(new ShellSurface(surface.get()));
 
+  EXPECT_EQ(nullptr, shell_surface->GetWidget());
+  shell_surface->SetApplicationId("pre-widget-id");
+
   surface->Commit();
-  EXPECT_EQ("", ShellSurface::GetApplicationId(
-                    shell_surface->GetWidget()->GetNativeWindow()));
+  aura::Window* window = shell_surface->GetWidget()->GetNativeWindow();
+  EXPECT_EQ("pre-widget-id", ShellSurface::GetApplicationId(window));
   shell_surface->SetApplicationId("test");
-  EXPECT_EQ("test", ShellSurface::GetApplicationId(
-                        shell_surface->GetWidget()->GetNativeWindow()));
+  EXPECT_EQ("test", ShellSurface::GetApplicationId(window));
 }
 
 TEST_F(ShellSurfaceTest, Move) {
   std::unique_ptr<Surface> surface(new Surface);
   std::unique_ptr<ShellSurface> shell_surface(new ShellSurface(surface.get()));
 
   // Map shell surface.
   surface->Commit();
 
   // The interactive move should end when surface is destroyed.
@@ skipping 583 matching lines @@
   shell_surface.OnAccessibilityModeChanged();
   shell_surface2.OnAccessibilityModeChanged();
 
   EXPECT_TRUE(shell_surface.shadow_underlay()->IsVisible());
   EXPECT_EQ(shadow_bounds, shell_surface.shadow_underlay()->bounds());
   EXPECT_EQ(shadow_bounds, shell_surface2.shadow_underlay()->bounds());
 }
 
 }  // namespace
 }  // namespace exo