ash/display/projecting_observer_chromeos_unittest.cc

// 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 "ash/display/projecting_observer_chromeos.h"

#include "base/memory/scoped_vector.h"
#include "chromeos/dbus/fake_power_manager_client.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/display/chromeos/test/test_display_snapshot.h"

namespace ash {
namespace {

ui::TestDisplaySnapshot* CreateInternalSnapshot() {
  ui::TestDisplaySnapshot* output = new ui::TestDisplaySnapshot();
  output->set_type(ui::DISPLAY_CONNECTION_TYPE_INTERNAL);
  return output;
}

ui::TestDisplaySnapshot* CreateVGASnapshot() {
  ui::TestDisplaySnapshot* output = new ui::TestDisplaySnapshot();
  output->set_type(ui::DISPLAY_CONNECTION_TYPE_VGA);
  return output;
}

class ProjectingObserverTest : public testing::Test {
 public:
  ProjectingObserverTest() : observer_(&fake_power_client_) {}

  ~ProjectingObserverTest() override {}

 protected:
  chromeos::FakePowerManagerClient fake_power_client_;
  ProjectingObserver observer_;

 private:
  DISALLOW_COPY_AND_ASSIGN(ProjectingObserverTest);
};

}  // namespace

TEST_F(ProjectingObserverTest, CheckNoDisplay) {
  ScopedVector<ui::DisplaySnapshot> displays;
  observer_.OnDisplayModeChanged(displays.get());

  EXPECT_EQ(1, fake_power_client_.num_set_is_projecting_calls());
  EXPECT_FALSE(fake_power_client_.is_projecting());
}

TEST_F(ProjectingObserverTest, CheckWithoutInternalDisplay) {
  ScopedVector<ui::DisplaySnapshot> displays;
  displays.push_back(CreateVGASnapshot());
  observer_.OnDisplayModeChanged(displays.get());

  EXPECT_EQ(1, fake_power_client_.num_set_is_projecting_calls());
  EXPECT_FALSE(fake_power_client_.is_projecting());
}

TEST_F(ProjectingObserverTest, CheckWithInternalDisplay) {
  ScopedVector<ui::DisplaySnapshot> displays;
  displays.push_back(CreateInternalSnapshot());
  observer_.OnDisplayModeChanged(displays.get());

  EXPECT_EQ(1, fake_power_client_.num_set_is_projecting_calls());
  EXPECT_FALSE(fake_power_client_.is_projecting());
}

TEST_F(ProjectingObserverTest, CheckWithTwoVGADisplays) {
  ScopedVector<ui::DisplaySnapshot> displays;
  displays.push_back(CreateVGASnapshot());
  displays.push_back(CreateVGASnapshot());
  observer_.OnDisplayModeChanged(displays.get());

  EXPECT_EQ(1, fake_power_client_.num_set_is_projecting_calls());
  // We need at least 1 internal display to set projecting to on.
  EXPECT_FALSE(fake_power_client_.is_projecting());
}

TEST_F(ProjectingObserverTest, CheckWithInternalAndVGADisplays) {
  ScopedVector<ui::DisplaySnapshot> displays;
  displays.push_back(CreateInternalSnapshot());
  displays.push_back(CreateVGASnapshot());
  observer_.OnDisplayModeChanged(displays.get());

  EXPECT_EQ(1, fake_power_client_.num_set_is_projecting_calls());
  EXPECT_TRUE(fake_power_client_.is_projecting());
}

TEST_F(ProjectingObserverTest, CheckWithVGADisplayAndOneCastingSession) {
  ScopedVector<ui::DisplaySnapshot> displays;
  displays.push_back(CreateVGASnapshot());
  observer_.OnDisplayModeChanged(displays.get());

  observer_.OnCastingSessionStartedOrStopped(true);

  EXPECT_EQ(2, fake_power_client_.num_set_is_projecting_calls());
  // Need at least one internal display to set projecting state to |true|.
  EXPECT_FALSE(fake_power_client_.is_projecting());
}

TEST_F(ProjectingObserverTest, CheckWithInternalDisplayAndOneCastingSession) {
  ScopedVector<ui::DisplaySnapshot> displays;
  displays.push_back(CreateInternalSnapshot());
  observer_.OnDisplayModeChanged(displays.get());

  observer_.OnCastingSessionStartedOrStopped(true);

  EXPECT_EQ(2, fake_power_client_.num_set_is_projecting_calls());
  EXPECT_TRUE(fake_power_client_.is_projecting());
}

TEST_F(ProjectingObserverTest, CheckProjectingAfterClosingACastingSession) {
  ScopedVector<ui::DisplaySnapshot> displays;
  displays.push_back(CreateInternalSnapshot());
  observer_.OnDisplayModeChanged(displays.get());

  observer_.OnCastingSessionStartedOrStopped(true);
  observer_.OnCastingSessionStartedOrStopped(true);

  EXPECT_EQ(3, fake_power_client_.num_set_is_projecting_calls());
  EXPECT_TRUE(fake_power_client_.is_projecting());

  observer_.OnCastingSessionStartedOrStopped(false);

  EXPECT_EQ(4, fake_power_client_.num_set_is_projecting_calls());
  EXPECT_TRUE(fake_power_client_.is_projecting());
}

TEST_F(ProjectingObserverTest,
       CheckStopProjectingAfterClosingAllCastingSessions) {
  ScopedVector<ui::DisplaySnapshot> displays;
  displays.push_back(CreateInternalSnapshot());
  observer_.OnDisplayModeChanged(displays.get());

  observer_.OnCastingSessionStartedOrStopped(true);
  observer_.OnCastingSessionStartedOrStopped(false);

  EXPECT_EQ(3, fake_power_client_.num_set_is_projecting_calls());
  EXPECT_FALSE(fake_power_client_.is_projecting());
}

TEST_F(ProjectingObserverTest,
       CheckStopProjectingAfterDisconnectingSecondOutput) {
  ScopedVector<ui::DisplaySnapshot> displays;
  displays.push_back(CreateInternalSnapshot());
  displays.push_back(CreateVGASnapshot());
  observer_.OnDisplayModeChanged(displays.get());

  // Remove VGA output.
  displays.erase(displays.begin() + 1);
  observer_.OnDisplayModeChanged(displays.get());

  EXPECT_EQ(2, fake_power_client_.num_set_is_projecting_calls());
  EXPECT_FALSE(fake_power_client_.is_projecting());
}

}  // namespace ash