blob: d7506d42d4bdeaff57d128bf8fe025daf269f0c8 [file] [log] [blame]
// Copyright 2014 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 "ui/display/util/display_util.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace display {
TEST(DisplayUtilTest, TestBlackListedDisplay) {
EXPECT_TRUE(IsDisplaySizeBlackListed(gfx::Size(10, 10)));
EXPECT_TRUE(IsDisplaySizeBlackListed(gfx::Size(40, 30)));
EXPECT_TRUE(IsDisplaySizeBlackListed(gfx::Size(50, 40)));
EXPECT_TRUE(IsDisplaySizeBlackListed(gfx::Size(160, 90)));
EXPECT_TRUE(IsDisplaySizeBlackListed(gfx::Size(160, 100)));
EXPECT_FALSE(IsDisplaySizeBlackListed(gfx::Size(50, 60)));
EXPECT_FALSE(IsDisplaySizeBlackListed(gfx::Size(100, 70)));
EXPECT_FALSE(IsDisplaySizeBlackListed(gfx::Size(272, 181)));
}
TEST(DisplayUtilTest, GetScaleFactor) {
// Normal chromebook spec. DPI ~= 130
EXPECT_EQ(1.0f, GetScaleFactor(
gfx::Size(256, 144), gfx::Size(1366, 768)));
// HiDPI like Pixel. DPI ~= 240
EXPECT_EQ(2.0f, GetScaleFactor(
gfx::Size(272, 181), gfx::Size(2560, 1700)));
// A large external display but normal pixel density. DPI ~= 100
EXPECT_EQ(1.0f, GetScaleFactor(
gfx::Size(641, 400), gfx::Size(2560, 1600)));
// A large external display with high pixel density. DPI ~= 157
EXPECT_EQ(2.0f, GetScaleFactor(
gfx::Size(621, 341), gfx::Size(3840, 2160)));
// 4K resolution but the display is physically even larger. DPI ~= 114
EXPECT_EQ(1.0f, GetScaleFactor(
gfx::Size(854, 481), gfx::Size(3840, 2160)));
// 21.5 inch, 1080p. DPI ~= 102
EXPECT_EQ(1.0f, GetScaleFactor(
gfx::Size(476, 267), gfx::Size(1920, 1080)));
// Corner case; slightly higher density but smaller screens. DPI ~= 165
EXPECT_EQ(1.0f, GetScaleFactor(
gfx::Size(293, 165), gfx::Size(1920, 1080)));
}
} // namespace display