text: // Copyright 2013 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/display/display_change_observer_chromeos.h"
  
  #include "ash/display/display_info.h"
  #include "base/memory/scoped_vector.h"
  #include "testing/gtest/include/gtest/gtest.h"
  #include "ui/display/chromeos/display_configurator.h"
  #include "ui/display/chromeos/test/test_display_snapshot.h"
  #include "ui/display/types/chromeos/display_mode.h"
  
  using ui::DisplayConfigurator;
  
  typedef testing::Test DisplayChangeObserverTest;
  
  namespace ash {
  
  TEST_F(DisplayChangeObserverTest, GetExternalDisplayModeList) {
    ScopedVector<const ui::DisplayMode> modes;
    modes.push_back(new ui::DisplayMode(gfx::Size(1920, 1200), false, 60));
  
    // All non-interlaced (as would be seen with different refresh rates).
    modes.push_back(new ui::DisplayMode(gfx::Size(1920, 1080), false, 80));
    modes.push_back(new ui::DisplayMode(gfx::Size(1920, 1080), false, 70));
    modes.push_back(new ui::DisplayMode(gfx::Size(1920, 1080), false, 60));
  
    // Interlaced vs non-interlaced.
    modes.push_back(new ui::DisplayMode(gfx::Size(1280, 720), true, 60));
    modes.push_back(new ui::DisplayMode(gfx::Size(1280, 720), false, 60));
  
    // Interlaced only.
    modes.push_back(new ui::DisplayMode(gfx::Size(1024, 768), true, 70));
    modes.push_back(new ui::DisplayMode(gfx::Size(1024, 768), true, 60));
  
    // Mixed.
    modes.push_back(new ui::DisplayMode(gfx::Size(1024, 600), true, 60));
    modes.push_back(new ui::DisplayMode(gfx::Size(1024, 600), false, 70));
    modes.push_back(new ui::DisplayMode(gfx::Size(1024, 600), false, 60));
  
    // Just one interlaced mode.
    modes.push_back(new ui::DisplayMode(gfx::Size(640, 480), true, 60));
  
    ui::TestDisplaySnapshot display_snapshot;
    display_snapshot.set_modes(modes.get());
    DisplayConfigurator::DisplayState output;
    output.display = &display_snapshot;
  
    std::vector<DisplayMode> display_modes =
        DisplayChangeObserver::GetExternalDisplayModeList(output);
    ASSERT_EQ(6u, display_modes.size());
    EXPECT_EQ("640x480", display_modes[0].size.ToString());
    EXPECT_TRUE(display_modes[0].interlaced);
    EXPECT_EQ(display_modes[0].refresh_rate, 60);
  
    EXPECT_EQ("1024x600", display_modes[1].size.ToString());
    EXPECT_FALSE(display_modes[1].interlaced);
    EXPECT_EQ(display_modes[1].refresh_rate, 70);
  
    EXPECT_EQ("1024x768", display_modes[2].size.ToString());
    EXPECT_TRUE(display_modes[2].interlaced);
    EXPECT_EQ(display_modes[2].refresh_rate, 70);
  
    EXPECT_EQ("1280x720", display_modes[3].size.ToString());
    EXPECT_FALSE(display_modes[3].interlaced);
    EXPECT_EQ(display_modes[3].refresh_rate, 60);
  
    EXPECT_EQ("1920x1080", display_modes[4].size.ToString());
    EXPECT_FALSE(display_modes[4].interlaced);
    EXPECT_EQ(display_modes[4].refresh_rate, 80);
  
    EXPECT_EQ("1920x1200", display_modes[5].size.ToString());
    EXPECT_FALSE(display_modes[5].interlaced);
    EXPECT_EQ(display_modes[5].refresh_rate, 60);
  
    // Outputs without any modes shouldn't cause a crash.
    modes.clear();
    display_snapshot.set_modes(modes.get());
  
    display_modes = DisplayChangeObserver::GetExternalDisplayModeList(output);
    EXPECT_EQ(0u, display_modes.size());
  }
  
  TEST_F(DisplayChangeObserverTest, GetInternalDisplayModeList) {
    ScopedVector<const ui::DisplayMode> modes;
    // Data picked from peppy.
    modes.push_back(new ui::DisplayMode(gfx::Size(1366, 768), false, 60));
    modes.push_back(new ui::DisplayMode(gfx::Size(1024, 768), false, 60));
    modes.push_back(new ui::DisplayMode(gfx::Size(800, 600), false, 60));
    modes.push_back(new ui::DisplayMode(gfx::Size(600, 600), false, 56.2));
    modes.push_back(new ui::DisplayMode(gfx::Size(640, 480), false, 59.9));
  
    ui::TestDisplaySnapshot display_snapshot;
    display_snapshot.set_modes(modes.get());
    display_snapshot.set_native_mode(modes[0]);
    DisplayConfigurator::DisplayState output;
    output.display = &display_snapshot;
  
    DisplayInfo info;
    info.SetBounds(gfx::Rect(0, 0, 1366, 768));
  
    std::vector<DisplayMode> display_modes =
        DisplayChangeObserver::GetInternalDisplayModeList(info, output);
    ASSERT_EQ(5u, display_modes.size());
    EXPECT_EQ("1366x768", display_modes[0].size.ToString());
    EXPECT_FALSE(display_modes[0].native);
    EXPECT_NEAR(display_modes[0].ui_scale, 0.5, 0.01);
    EXPECT_EQ(display_modes[0].refresh_rate, 60);
  
    EXPECT_EQ("1366x768", display_modes[1].size.ToString());
    EXPECT_FALSE(display_modes[1].native);
    EXPECT_NEAR(display_modes[1].ui_scale, 0.6, 0.01);
    EXPECT_EQ(display_modes[1].refresh_rate, 60);
  
    EXPECT_EQ("1366x768", display_modes[2].size.ToString());
    EXPECT_FALSE(display_modes[2].native);
    EXPECT_NEAR(display_modes[2].ui_scale, 0.75, 0.01);
    EXPECT_EQ(display_modes[2].refresh_rate, 60);
  
    EXPECT_EQ("1366x768", display_modes[3].size.ToString());
    EXPECT_TRUE(display_modes[3].native);
    EXPECT_NEAR(display_modes[3].ui_scale, 1.0, 0.01);
    EXPECT_EQ(display_modes[3].refresh_rate, 60);
  
    EXPECT_EQ("1366x768", display_modes[4].size.ToString());
    EXPECT_FALSE(display_modes[4].native);
    EXPECT_NEAR(display_modes[4].ui_scale, 1.125, 0.01);
    EXPECT_EQ(display_modes[4].refresh_rate, 60);
  }
  
  TEST_F(DisplayChangeObserverTest, GetExternalDisplayModeList4K) {
    ScopedVector<const ui::DisplayMode> modes;
    modes.push_back(new ui::DisplayMode(gfx::Size(3840, 2160), false, 30));
    modes.push_back(new ui::DisplayMode(gfx::Size(1920, 1200), false, 60));
  
    // All non-interlaced (as would be seen with different refresh rates).
    modes.push_back(new ui::DisplayMode(gfx::Size(1920, 1080), false, 80));
    modes.push_back(new ui::DisplayMode(gfx::Size(1920, 1080), false, 70));
    modes.push_back(new ui::DisplayMode(gfx::Size(1920, 1080), false, 60));
  
    // Interlaced vs non-interlaced.
    modes.push_back(new ui::DisplayMode(gfx::Size(1280, 720), true, 60));
    modes.push_back(new ui::DisplayMode(gfx::Size(1280, 720), false, 60));
  
    // Interlaced only.
    modes.push_back(new ui::DisplayMode(gfx::Size(1024, 768), true, 70));
    modes.push_back(new ui::DisplayMode(gfx::Size(1024, 768), true, 60));
  
    // Mixed.
    modes.push_back(new ui::DisplayMode(gfx::Size(1024, 600), true, 60));
    modes.push_back(new ui::DisplayMode(gfx::Size(1024, 600), false, 70));
    modes.push_back(new ui::DisplayMode(gfx::Size(1024, 600), false, 60));
  
    // Just one interlaced mode.
    modes.push_back(new ui::DisplayMode(gfx::Size(640, 480), true, 60));
  
    ui::TestDisplaySnapshot display_snapshot;
    display_snapshot.set_modes(modes.get());
    display_snapshot.set_native_mode(modes[0]);
    DisplayConfigurator::DisplayState output;
    output.display = &display_snapshot;
  
    std::vector<DisplayMode> display_modes =
        DisplayChangeObserver::GetExternalDisplayModeList(output);
    ASSERT_EQ(9u, display_modes.size());
    EXPECT_EQ("640x480", display_modes[0].size.ToString());
    EXPECT_TRUE(display_modes[0].interlaced);
    EXPECT_EQ(display_modes[0].refresh_rate, 60);
  
    EXPECT_EQ("1024x600", display_modes[1].size.ToString());
    EXPECT_FALSE(display_modes[1].interlaced);
    EXPECT_EQ(display_modes[1].refresh_rate, 70);
  
    EXPECT_EQ("1024x768", display_modes[2].size.ToString());
    EXPECT_TRUE(display_modes[2].interlaced);
    EXPECT_EQ(display_modes[2].refresh_rate, 70);
  
    EXPECT_EQ("1280x720", display_modes[3].size.ToString());
    EXPECT_FALSE(display_modes[3].interlaced);
    EXPECT_EQ(display_modes[3].refresh_rate, 60);
  
    EXPECT_EQ("1920x1080", display_modes[4].size.ToString());
    EXPECT_FALSE(display_modes[4].interlaced);
    EXPECT_EQ(display_modes[4].refresh_rate, 80);
  
    EXPECT_EQ("3840x2160", display_modes[5].size.ToString());
    EXPECT_FALSE(display_modes[5].interlaced);
    EXPECT_FALSE(display_modes[5].native);
    EXPECT_EQ(display_modes[5].refresh_rate, 30);
    EXPECT_EQ(display_modes[5].device_scale_factor, 2.0);
  
    EXPECT_EQ("1920x1200", display_modes[6].size.ToString());
    EXPECT_FALSE(display_modes[6].interlaced);
    EXPECT_EQ(display_modes[6].refresh_rate, 60);
  
    EXPECT_EQ("3840x2160", display_modes[7].size.ToString());
    EXPECT_FALSE(display_modes[7].interlaced);
    EXPECT_FALSE(display_modes[7].native);
    EXPECT_EQ(display_modes[7].refresh_rate, 30);
    EXPECT_EQ(display_modes[7].device_scale_factor, 1.25);
  
    EXPECT_EQ("3840x2160", display_modes[8].size.ToString());
    EXPECT_FALSE(display_modes[8].interlaced);
    EXPECT_TRUE(display_modes[8].native);
    EXPECT_EQ(display_modes[8].refresh_rate, 30);
  
    // Outputs without any modes shouldn't cause a crash.
    modes.clear();
    display_snapshot.set_modes(modes.get());
  
    display_modes = DisplayChangeObserver::GetExternalDisplayModeList(output);
    EXPECT_EQ(0u, display_modes.size());
  }
  
  TEST_F(DisplayChangeObserverTest, FindDeviceScaleFactor) {
    // 19.5" 1600x900
    EXPECT_EQ(1.0f, DisplayChangeObserver::FindDeviceScaleFactor(94.14f));
  
    // 21.5" 1920x1080
    EXPECT_EQ(1.0f, DisplayChangeObserver::FindDeviceScaleFactor(102.46f));
  
    // 12.1" 1280x800
    EXPECT_EQ(1.0f, DisplayChangeObserver::FindDeviceScaleFactor(124.75f));
  
    // 13.3" 1920x1080
    EXPECT_EQ(1.25f, DisplayChangeObserver::FindDeviceScaleFactor(157.35f));
  
    // 14" 1920x1080
    EXPECT_EQ(1.25f, DisplayChangeObserver::FindDeviceScaleFactor(165.63f));
  
    // 12.85" 2560x1700
    EXPECT_EQ(2.0f, DisplayChangeObserver::FindDeviceScaleFactor(239.15f));
  
    // Erroneous values should still work.
    EXPECT_EQ(1.0f, DisplayChangeObserver::FindDeviceScaleFactor(-100.0f));
    EXPECT_EQ(1.0f, DisplayChangeObserver::FindDeviceScaleFactor(0.0f));
    EXPECT_EQ(2.0f, DisplayChangeObserver::FindDeviceScaleFactor(10000.0f));
  }
  
  }  // namespace ash
  