mus+ash: Copy parts of ScreenAsh to ScreenMus.

ash/mus/screen_mus_unittest.cc

Index: ash/mus/screen_mus_unittest.cc
diff --git a/ash/mus/screen_mus_unittest.cc b/ash/mus/screen_mus_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..aa962b06d2075d2a9ab1266176c0a5a30e7aeac8
--- /dev/null
+++ b/ash/mus/screen_mus_unittest.cc
@@ -0,0 +1,53 @@
+// Copyright 2017 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/mus/screen_mus.h"
+
+#include "ash/mus/window_manager.h"
+#include "ash/mus/window_manager_application.h"
+#include "ash/test/ash_test_base.h"
+#include "ash/test/ash_test_helper.h"
+#include "ui/aura/test/test_window_delegate.h"
+
+namespace ash {
+namespace test {
+
+class ScreenMusTest : public AshTestBase {
+ public:
+  ScreenMusTest() {}
+  ~ScreenMusTest() override {}
+
+  display::Screen* screen_mus() {
+    return ash_test_helper()->window_manager_app()->window_manager()->screen();
+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ScreenMusTest);
+};
+
+TEST_F(ScreenMusTest, GetWindowAtScreenPoint) {
+  UpdateDisplay("1024x600");
+
+  aura::test::TestWindowDelegate test_delegate;
+  std::unique_ptr<aura::Window> w1(CreateTestWindowInShellWithDelegate(
+      &test_delegate, 23, gfx::Rect(20, 20, 50, 50)));
+
+  aura::Window* at_point =
+      screen_mus()->GetWindowAtScreenPoint(gfx::Point(25, 25));
+  EXPECT_EQ(w1.get(), at_point);
+
+  // Create a second window which overlaps with w1.
+  std::unique_ptr<aura::Window> w2(CreateTestWindowInShellWithDelegate(
+      &test_delegate, 17, gfx::Rect(25, 25, 50, 50)));
+  at_point = screen_mus()->GetWindowAtScreenPoint(gfx::Point(25, 25));
+  EXPECT_EQ(w2.get(), at_point);
+
+  // Raise w1.
+  w1->parent()->StackChildAtTop(w1.get());
+  at_point = screen_mus()->GetWindowAtScreenPoint(gfx::Point(25, 25));
+  EXPECT_EQ(w1.get(), at_point);
+}

[James Cook, 2017/03/02 00:08:23]

Thanks for adding test coverage.

+
+}  // namespace test
+}  // namespace ash