1 // Copyright 2014 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "ui/display/util/display_util.h" 6 7 #include "testing/gtest/include/gtest/gtest.h" 8 9 namespace ui { 10 11 TEST(DisplayUtilTest, TestBlackListedDisplay) { 12 EXPECT_TRUE(IsDisplaySizeBlackListed(gfx::Size(10, 10))); 13 EXPECT_TRUE(IsDisplaySizeBlackListed(gfx::Size(40, 30))); 14 EXPECT_TRUE(IsDisplaySizeBlackListed(gfx::Size(50, 40))); 15 EXPECT_TRUE(IsDisplaySizeBlackListed(gfx::Size(160, 90))); 16 EXPECT_TRUE(IsDisplaySizeBlackListed(gfx::Size(160, 100))); 17 18 EXPECT_FALSE(IsDisplaySizeBlackListed(gfx::Size(50, 60))); 19 EXPECT_FALSE(IsDisplaySizeBlackListed(gfx::Size(100, 70))); 20 EXPECT_FALSE(IsDisplaySizeBlackListed(gfx::Size(272, 181))); 21 } 22 23 TEST(DisplayUtilTest, GetScaleFactor) { 24 // Normal chromebook spec. DPI ~= 130 25 EXPECT_EQ(1.0f, GetScaleFactor( 26 gfx::Size(256, 144), gfx::Size(1366, 768))); 27 28 // HiDPI like Pixel. DPI ~= 240 29 EXPECT_EQ(2.0f, GetScaleFactor( 30 gfx::Size(272, 181), gfx::Size(2560, 1700))); 31 32 // A large external display but normal pixel density. DPI ~= 100 33 EXPECT_EQ(1.0f, GetScaleFactor( 34 gfx::Size(641, 400), gfx::Size(2560, 1600))); 35 36 // A large external display with high pixel density. DPI ~= 157 37 EXPECT_EQ(2.0f, GetScaleFactor( 38 gfx::Size(621, 341), gfx::Size(3840, 2160))); 39 40 // 4K resolution but the display is physically even larger. DPI ~= 114 41 EXPECT_EQ(1.0f, GetScaleFactor( 42 gfx::Size(854, 481), gfx::Size(3840, 2160))); 43 44 // 21.5 inch, 1080p. DPI ~= 102 45 EXPECT_EQ(1.0f, GetScaleFactor( 46 gfx::Size(476, 267), gfx::Size(1920, 1080))); 47 48 // Corner case; slightly higher density but smaller screens. DPI ~= 165 49 EXPECT_EQ(1.0f, GetScaleFactor( 50 gfx::Size(293, 165), gfx::Size(1920, 1080))); 51 } 52 53 } // namespace ui 54
