Test coverage for bug in WmWindowAura::OnWindowVisibilityChanged()

ash/common/test/ash_test.cc

 // 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.
 
 #include "ash/common/test/ash_test.h"
 
 #include "ash/common/test/ash_test_impl.h"
+#include "ash/common/wm_shell.h"
 #include "ash/common/wm_window.h"
+#include "ui/compositor/layer_type.h"
 #include "ui/display/display.h"
 
 namespace ash {
 
 WindowOwner::WindowOwner(WmWindow* window) : window_(window) {}
 
 WindowOwner::~WindowOwner() {
   window_->Destroy();
 }
 
 AshTest::AshTest() : test_impl_(AshTestImpl::Create()) {}
 
 AshTest::~AshTest() {}
 
 bool AshTest::SupportsMultipleDisplays() const {
   return test_impl_->SupportsMultipleDisplays();
 }
 
 void AshTest::UpdateDisplay(const std::string& display_spec) {
   return test_impl_->UpdateDisplay(display_spec);
 }
 
 std::unique_ptr<WindowOwner> AshTest::CreateTestWindow(const gfx::Rect& bounds,
                                                        ui::wm::WindowType type,
                                                        int shell_window_id) {
   return test_impl_->CreateTestWindow(bounds, type, shell_window_id);
 }
 
+std::unique_ptr<WindowOwner> AshTest::CreateChildWindow(WmWindow* parent,
+                                                        const gfx::Rect& bounds,
+                                                        int shell_window_id) {
+  std::unique_ptr<WindowOwner> window_owner =
+      base::MakeUnique<WindowOwner>(WmShell::Get()->NewWindow(
+          ui::wm::WINDOW_TYPE_NORMAL, ui::LAYER_NOT_DRAWN));
+  window_owner->window()->SetBounds(bounds);
+  window_owner->window()->SetShellWindowId(shell_window_id);
+  parent->AddChild(window_owner->window());
+  window_owner->window()->Show();
+  return window_owner;
+}
+
 display::Display AshTest::GetSecondaryDisplay() {
   return test_impl_->GetSecondaryDisplay();
 }
 
 bool AshTest::SetSecondaryDisplayPlacement(
     display::DisplayPlacement::Position position,
     int offset) {
   return test_impl_->SetSecondaryDisplayPlacement(position, offset);
 }
 
 void AshTest::SetUp() {
   test_impl_->SetUp();
 }
 
 void AshTest::TearDown() {
   test_impl_->TearDown();
 }
 
 }  // namespace ash