SetDeviceScaleFactorForTest

ash/display/screen_ash_unittest.cc

Index: ash/display/screen_ash_unittest.cc
diff --git a/ash/display/screen_ash_unittest.cc b/ash/display/screen_ash_unittest.cc
index 44771b5fde0eb747f75f5681cd894e5460e9a604..4753780a93a4a282b5ee4382c74240dc1bd7fc5d 100644
--- a/ash/display/screen_ash_unittest.cc
+++ b/ash/display/screen_ash_unittest.cc
@@ -42,4 +42,16 @@ TEST_F(ScreenAshTest, TestGetWindowAtScreenPoint) {
                             gfx::Point(250, 260)));
 }
 
+TEST_F(ScreenAshTest, TestSetDeviceScaleFactorForTest) {
+  if (!SupportsMultipleDisplays())
+    return;
+  UpdateDisplay("800x500");
+  display::Screen* screen = display::Screen::GetScreen();
+  screen->SetDeviceScaleFactorForTest(2.0f);
+
+  EXPECT_EQ(gfx::Size(400, 250), screen->GetPrimaryDisplay().size());
+
+  display::Display::ResetForceDeviceScaleFactorForTesting();
+}
+
 }  // namespace ash