Create a mirror window.

ash/display/display_manager_unittest.cc

Index: ash/display/display_manager_unittest.cc
diff --git a/ash/display/display_manager_unittest.cc b/ash/display/display_manager_unittest.cc
index 0706b0ee1313594739bcad47fb1d2b1a329b00f4..76475cb01f268672da245558076ddb05a26d9372 100644
--- a/ash/display/display_manager_unittest.cc
+++ b/ash/display/display_manager_unittest.cc
@@ -9,6 +9,7 @@
 #include "ash/shell.h"
 #include "ash/test/ash_test_base.h"
 #include "ash/test/display_manager_test_api.h"
+#include "ash/test/mirror_window_test_api.h"
 #include "base/format_macros.h"
 #include "base/stringprintf.h"
 #include "ui/aura/env.h"
@@ -712,7 +713,11 @@ TEST_F(DisplayManagerTest, Rotate) {
             GetDisplayInfoAt(1).bounds_in_pixel().ToString());
   EXPECT_EQ("400x300",
             GetDisplayInfoAt(1).size_in_pixel().ToString());
+  reset();
   UpdateDisplay("100x200/b,300x400");
+  EXPECT_EQ("2 0 0", GetCountSummary());
+  reset();
+
   EXPECT_EQ("1,1 100x200",
             GetDisplayInfoAt(0).bounds_in_pixel().ToString());
   EXPECT_EQ("100x200",
@@ -722,6 +727,13 @@ TEST_F(DisplayManagerTest, Rotate) {
             GetDisplayInfoAt(1).bounds_in_pixel().ToString());
   EXPECT_EQ("300x400",
             GetDisplayInfoAt(1).size_in_pixel().ToString());
+
+  UpdateDisplay("200x200");
+  EXPECT_EQ("1 0 1", GetCountSummary());
+  reset();
+
+  UpdateDisplay("200x200/l");
+  EXPECT_EQ("1 0 0", GetCountSummary());
 }
 
 TEST_F(DisplayManagerTest, UIScale) {
@@ -839,5 +851,33 @@ TEST_F(DisplayManagerTest, MAYBE_UpdateMouseCursorAfterRotateZoom) {
   EXPECT_EQ("750,75", env->last_mouse_location().ToString());
 }
 
+#if defined(OS_WIN)
+// This does not work on metro.
+#define MAYBE_SoftwareMirroring DISABLED_SoftwareMirroring
+#else
+#define MAYBE_SoftwareMirroring SoftwareMirroring
+#endif
+
+TEST_F(DisplayManagerTest, MAYBE_SoftwareMirroring) {
+  UpdateDisplay("300x400,400x500");
+
+  test::MirrorWindowTestApi test_api;
+  EXPECT_EQ(NULL, test_api.GetRootWindow());
+
+  DisplayManager* display_manager = Shell::GetInstance()->display_manager();
+  display_manager->SetSoftwareMirroring(true);
+  display_manager->UpdateDisplays();
+  EXPECT_EQ(1U, display_manager->GetNumDisplays());
+  EXPECT_EQ("0,0 300x400",
+            Shell::GetScreen()->GetPrimaryDisplay().bounds().ToString());
+  EXPECT_EQ("400x500", test_api.GetRootWindow()->GetHostSize().ToString());
+  EXPECT_TRUE(display_manager->IsMirrored());
+
+  display_manager->SetMirrorMode(false);
+  EXPECT_EQ(NULL, test_api.GetRootWindow());
+  EXPECT_EQ(2U, display_manager->GetNumDisplays());
+  EXPECT_FALSE(display_manager->IsMirrored());
+}
+
 }  // namespace internal
 }  // namespace ash