services/surfaceflinger/tests/unittests/SurfaceFlinger_SetDisplayStateTest.cpp - third_party/android/platform/frameworks/native - Git at Google

 /*
  * Copyright 2020 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 #undef LOG_TAG
 #define LOG_TAG "LibSurfaceFlingerUnittests"

 #include "DisplayTransactionTestHelpers.h"

 #include <gmock/gmock.h>
 #include <gtest/gtest.h>

 namespace android {
 namespace {

 class SetDisplayStateLockedTest : public DisplayTransactionTest {};

 TEST_F(SetDisplayStateLockedTest, setDisplayStateLockedDoesNothingWithUnknownDisplay) {
     // --------------------------------------------------------------------
     // Preconditions

     // We have an unknown display token not associated with a known display
     sp<BBinder> displayToken = new BBinder();

     // The requested display state references the unknown display.
     DisplayState state;
     state.what = DisplayState::eLayerStackChanged;
     state.token = displayToken;
     state.layerStack = 456;

     // --------------------------------------------------------------------
     // Invocation

     uint32_t flags = mFlinger.setDisplayStateLocked(state);

     // --------------------------------------------------------------------
     // Postconditions

     // The returned flags are empty
     EXPECT_EQ(0u, flags);

     // The display token still doesn't match anything known.
     EXPECT_FALSE(hasCurrentDisplayState(displayToken));
 }

 TEST_F(SetDisplayStateLockedTest, setDisplayStateLockedDoesNothingWhenNoChanges) {
     using Case = SimplePrimaryDisplayCase;

     // --------------------------------------------------------------------
     // Preconditions

     // A display is already set up
     auto display = Case::Display::makeFakeExistingDisplayInjector(this);
     display.inject();

     // No changes are made to the display
     DisplayState state;
     state.what = 0;
     state.token = display.token();

     // --------------------------------------------------------------------
     // Invocation

     uint32_t flags = mFlinger.setDisplayStateLocked(state);

     // --------------------------------------------------------------------
     // Postconditions

     // The returned flags are empty
     EXPECT_EQ(0u, flags);
 }

 TEST_F(SetDisplayStateLockedTest, setDisplayStateLockedDoesNothingIfSurfaceDidNotChange) {
     using Case = SimplePrimaryDisplayCase;

     // --------------------------------------------------------------------
     // Preconditions

     // A display is already set up
     auto display = Case::Display::makeFakeExistingDisplayInjector(this);
     display.inject();

     // There is a surface that can be set.
     sp<mock::GraphicBufferProducer> surface = new mock::GraphicBufferProducer();

     // The current display state has the surface set
     display.mutableCurrentDisplayState().surface = surface;

     // The incoming request sets the same surface
     DisplayState state;
     state.what = DisplayState::eSurfaceChanged;
     state.token = display.token();
     state.surface = surface;

     // --------------------------------------------------------------------
     // Invocation

     uint32_t flags = mFlinger.setDisplayStateLocked(state);

     // --------------------------------------------------------------------
     // Postconditions

     // The returned flags are empty
     EXPECT_EQ(0u, flags);

     // The current display state is unchanged.
     EXPECT_EQ(surface.get(), display.getCurrentDisplayState().surface.get());
 }

 TEST_F(SetDisplayStateLockedTest, setDisplayStateLockedRequestsUpdateIfSurfaceChanged) {
     using Case = SimplePrimaryDisplayCase;

     // --------------------------------------------------------------------
     // Preconditions

     // A display is already set up
     auto display = Case::Display::makeFakeExistingDisplayInjector(this);
     display.inject();

     // There is a surface that can be set.
     sp<mock::GraphicBufferProducer> surface = new mock::GraphicBufferProducer();

     // The current display state does not have a surface
     display.mutableCurrentDisplayState().surface = nullptr;

     // The incoming request sets a surface
     DisplayState state;
     state.what = DisplayState::eSurfaceChanged;
     state.token = display.token();
     state.surface = surface;

     // --------------------------------------------------------------------
     // Invocation

     uint32_t flags = mFlinger.setDisplayStateLocked(state);

     // --------------------------------------------------------------------
     // Postconditions

     // The returned flags indicate a transaction is needed
     EXPECT_EQ(eDisplayTransactionNeeded, flags);

     // The current display layer stack state is set to the new value
     EXPECT_EQ(surface.get(), display.getCurrentDisplayState().surface.get());
 }

 TEST_F(SetDisplayStateLockedTest, setDisplayStateLockedDoesNothingIfLayerStackDidNotChange) {
     using Case = SimplePrimaryDisplayCase;

     // --------------------------------------------------------------------
     // Preconditions

     // A display is already set up
     auto display = Case::Display::makeFakeExistingDisplayInjector(this);
     display.inject();

     // The display has a layer stack set
     display.mutableCurrentDisplayState().layerStack = 456u;

     // The incoming request sets the same layer stack
     DisplayState state;
     state.what = DisplayState::eLayerStackChanged;
     state.token = display.token();
     state.layerStack = 456u;

     // --------------------------------------------------------------------
     // Invocation

     uint32_t flags = mFlinger.setDisplayStateLocked(state);

     // --------------------------------------------------------------------
     // Postconditions

     // The returned flags are empty
     EXPECT_EQ(0u, flags);

     // The current display state is unchanged
     EXPECT_EQ(456u, display.getCurrentDisplayState().layerStack);
 }

 TEST_F(SetDisplayStateLockedTest, setDisplayStateLockedRequestsUpdateIfLayerStackChanged) {
     using Case = SimplePrimaryDisplayCase;

     // --------------------------------------------------------------------
     // Preconditions

     // A display is set up
     auto display = Case::Display::makeFakeExistingDisplayInjector(this);
     display.inject();

     // The display has a layer stack set
     display.mutableCurrentDisplayState().layerStack = 654u;

     // The incoming request sets a different layer stack
     DisplayState state;
     state.what = DisplayState::eLayerStackChanged;
     state.token = display.token();
     state.layerStack = 456u;

     // --------------------------------------------------------------------
     // Invocation

     uint32_t flags = mFlinger.setDisplayStateLocked(state);

     // --------------------------------------------------------------------
     // Postconditions

     // The returned flags indicate a transaction is needed
     EXPECT_EQ(eDisplayTransactionNeeded, flags);

     // The desired display state has been set to the new value.
     EXPECT_EQ(456u, display.getCurrentDisplayState().layerStack);
 }

 TEST_F(SetDisplayStateLockedTest, setDisplayStateLockedDoesNothingIfProjectionDidNotChange) {
     using Case = SimplePrimaryDisplayCase;
     constexpr ui::Rotation initialOrientation = ui::ROTATION_180;
     const Rect initialOrientedDisplayRect = {1, 2, 3, 4};
     const Rect initialLayerStackRect = {5, 6, 7, 8};

     // --------------------------------------------------------------------
     // Preconditions

     // A display is set up
     auto display = Case::Display::makeFakeExistingDisplayInjector(this);
     display.inject();

     // The current display state projection state is all set
     display.mutableCurrentDisplayState().orientation = initialOrientation;
     display.mutableCurrentDisplayState().orientedDisplaySpaceRect = initialOrientedDisplayRect;
     display.mutableCurrentDisplayState().layerStackSpaceRect = initialLayerStackRect;

     // The incoming request sets the same projection state
     DisplayState state;
     state.what = DisplayState::eDisplayProjectionChanged;
     state.token = display.token();
     state.orientation = initialOrientation;
     state.orientedDisplaySpaceRect = initialOrientedDisplayRect;
     state.layerStackSpaceRect = initialLayerStackRect;

     // --------------------------------------------------------------------
     // Invocation

     uint32_t flags = mFlinger.setDisplayStateLocked(state);

     // --------------------------------------------------------------------
     // Postconditions

     // The returned flags are empty
     EXPECT_EQ(0u, flags);

     // The current display state is unchanged
     EXPECT_EQ(initialOrientation, display.getCurrentDisplayState().orientation);

     EXPECT_EQ(initialOrientedDisplayRect,
               display.getCurrentDisplayState().orientedDisplaySpaceRect);
     EXPECT_EQ(initialLayerStackRect, display.getCurrentDisplayState().layerStackSpaceRect);
 }

 TEST_F(SetDisplayStateLockedTest, setDisplayStateLockedRequestsUpdateIfOrientationChanged) {
     using Case = SimplePrimaryDisplayCase;
     constexpr ui::Rotation initialOrientation = ui::ROTATION_90;
     constexpr ui::Rotation desiredOrientation = ui::ROTATION_180;

     // --------------------------------------------------------------------
     // Preconditions

     // A display is set up
     auto display = Case::Display::makeFakeExistingDisplayInjector(this);
     display.inject();

     // The current display state has an orientation set
     display.mutableCurrentDisplayState().orientation = initialOrientation;

     // The incoming request sets a different orientation
     DisplayState state;
     state.what = DisplayState::eDisplayProjectionChanged;
     state.token = display.token();
     state.orientation = desiredOrientation;

     // --------------------------------------------------------------------
     // Invocation

     uint32_t flags = mFlinger.setDisplayStateLocked(state);

     // --------------------------------------------------------------------
     // Postconditions

     // The returned flags indicate a transaction is needed
     EXPECT_EQ(eDisplayTransactionNeeded, flags);

     // The current display state has the new value.
     EXPECT_EQ(desiredOrientation, display.getCurrentDisplayState().orientation);
 }

 TEST_F(SetDisplayStateLockedTest, setDisplayStateLockedRequestsUpdateIfFrameChanged) {
     using Case = SimplePrimaryDisplayCase;
     const Rect initialOrientedDisplayRect = {0, 0, 0, 0};
     const Rect desiredOrientedDisplayRect = {5, 6, 7, 8};

     // --------------------------------------------------------------------
     // Preconditions

     // A display is set up
     auto display = Case::Display::makeFakeExistingDisplayInjector(this);
     display.inject();

     // The current display state does not have a orientedDisplaySpaceRect
     display.mutableCurrentDisplayState().orientedDisplaySpaceRect = initialOrientedDisplayRect;

     // The incoming request sets a orientedDisplaySpaceRect
     DisplayState state;
     state.what = DisplayState::eDisplayProjectionChanged;
     state.token = display.token();
     state.orientedDisplaySpaceRect = desiredOrientedDisplayRect;

     // --------------------------------------------------------------------
     // Invocation

     uint32_t flags = mFlinger.setDisplayStateLocked(state);

     // --------------------------------------------------------------------
     // Postconditions

     // The returned flags indicate a transaction is needed
     EXPECT_EQ(eDisplayTransactionNeeded, flags);

     // The current display state has the new value.
     EXPECT_EQ(desiredOrientedDisplayRect,
               display.getCurrentDisplayState().orientedDisplaySpaceRect);
 }

 TEST_F(SetDisplayStateLockedTest, setDisplayStateLockedRequestsUpdateIfLayerStackRectChanged) {
     using Case = SimplePrimaryDisplayCase;
     const Rect initialLayerStackRect = {0, 0, 0, 0};
     const Rect desiredLayerStackRect = {5, 6, 7, 8};

     // --------------------------------------------------------------------
     // Preconditions

     // A display is set up
     auto display = Case::Display::makeFakeExistingDisplayInjector(this);
     display.inject();

     // The current display state does not have a layerStackSpaceRect
     display.mutableCurrentDisplayState().layerStackSpaceRect = initialLayerStackRect;

     // The incoming request sets a layerStackSpaceRect
     DisplayState state;
     state.what = DisplayState::eDisplayProjectionChanged;
     state.token = display.token();
     state.layerStackSpaceRect = desiredLayerStackRect;

     // --------------------------------------------------------------------
     // Invocation

     uint32_t flags = mFlinger.setDisplayStateLocked(state);

     // --------------------------------------------------------------------
     // Postconditions

     // The returned flags indicate a transaction is needed
     EXPECT_EQ(eDisplayTransactionNeeded, flags);

     // The current display state has the new value.
     EXPECT_EQ(desiredLayerStackRect, display.getCurrentDisplayState().layerStackSpaceRect);
 }

 TEST_F(SetDisplayStateLockedTest, setDisplayStateLockedDoesNothingIfSizeDidNotChange) {
     using Case = SimplePrimaryDisplayCase;
     constexpr uint32_t initialWidth = 1024;
     constexpr uint32_t initialHeight = 768;

     // --------------------------------------------------------------------
     // Preconditions

     // A display is set up
     auto display = Case::Display::makeFakeExistingDisplayInjector(this);
     display.inject();

     // The current display state has a size set
     display.mutableCurrentDisplayState().width = initialWidth;
     display.mutableCurrentDisplayState().height = initialHeight;

     // The incoming request sets the same display size
     DisplayState state;
     state.what = DisplayState::eDisplaySizeChanged;
     state.token = display.token();
     state.width = initialWidth;
     state.height = initialHeight;

     // --------------------------------------------------------------------
     // Invocation

     uint32_t flags = mFlinger.setDisplayStateLocked(state);

     // --------------------------------------------------------------------
     // Postconditions

     // The returned flags are empty
     EXPECT_EQ(0u, flags);

     // The current display state is unchanged
     EXPECT_EQ(initialWidth, display.getCurrentDisplayState().width);
     EXPECT_EQ(initialHeight, display.getCurrentDisplayState().height);
 }

 TEST_F(SetDisplayStateLockedTest, setDisplayStateLockedRequestsUpdateIfWidthChanged) {
     using Case = SimplePrimaryDisplayCase;
     constexpr uint32_t initialWidth = 0;
     constexpr uint32_t desiredWidth = 1024;

     // --------------------------------------------------------------------
     // Preconditions

     // A display is set up
     auto display = Case::Display::makeFakeExistingDisplayInjector(this);
     display.inject();

     // The display does not yet have a width
     display.mutableCurrentDisplayState().width = initialWidth;

     // The incoming request sets a display width
     DisplayState state;
     state.what = DisplayState::eDisplaySizeChanged;
     state.token = display.token();
     state.width = desiredWidth;

     // --------------------------------------------------------------------
     // Invocation

     uint32_t flags = mFlinger.setDisplayStateLocked(state);

     // --------------------------------------------------------------------
     // Postconditions

     // The returned flags indicate a transaction is needed
     EXPECT_EQ(eDisplayTransactionNeeded, flags);

     // The current display state has the new value.
     EXPECT_EQ(desiredWidth, display.getCurrentDisplayState().width);
 }

 TEST_F(SetDisplayStateLockedTest, setDisplayStateLockedRequestsUpdateIfHeightChanged) {
     using Case = SimplePrimaryDisplayCase;
     constexpr uint32_t initialHeight = 0;
     constexpr uint32_t desiredHeight = 768;

     // --------------------------------------------------------------------
     // Preconditions

     // A display is set up
     auto display = Case::Display::makeFakeExistingDisplayInjector(this);
     display.inject();

     // The display does not yet have a height
     display.mutableCurrentDisplayState().height = initialHeight;

     // The incoming request sets a display height
     DisplayState state;
     state.what = DisplayState::eDisplaySizeChanged;
     state.token = display.token();
     state.height = desiredHeight;

     // --------------------------------------------------------------------
     // Invocation

     uint32_t flags = mFlinger.setDisplayStateLocked(state);

     // --------------------------------------------------------------------
     // Postconditions

     // The returned flags indicate a transaction is needed
     EXPECT_EQ(eDisplayTransactionNeeded, flags);

     // The current display state has the new value.
     EXPECT_EQ(desiredHeight, display.getCurrentDisplayState().height);
 }

 } // namespace
 } // namespace android
	/*
	* Copyright 2020 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	#undef LOG_TAG
	#define LOG_TAG "LibSurfaceFlingerUnittests"

	#include "DisplayTransactionTestHelpers.h"

	#include <gmock/gmock.h>
	#include <gtest/gtest.h>

	namespace android {
	namespace {

	class SetDisplayStateLockedTest : public DisplayTransactionTest {};

	TEST_F(SetDisplayStateLockedTest, setDisplayStateLockedDoesNothingWithUnknownDisplay) {
	// --------------------------------------------------------------------
	// Preconditions

	// We have an unknown display token not associated with a known display
	sp<BBinder> displayToken = new BBinder();

	// The requested display state references the unknown display.
	DisplayState state;
	state.what = DisplayState::eLayerStackChanged;
	state.token = displayToken;
	state.layerStack = 456;

	// --------------------------------------------------------------------
	// Invocation

	uint32_t flags = mFlinger.setDisplayStateLocked(state);

	// --------------------------------------------------------------------
	// Postconditions

	// The returned flags are empty
	EXPECT_EQ(0u, flags);

	// The display token still doesn't match anything known.
	EXPECT_FALSE(hasCurrentDisplayState(displayToken));
	}

	TEST_F(SetDisplayStateLockedTest, setDisplayStateLockedDoesNothingWhenNoChanges) {
	using Case = SimplePrimaryDisplayCase;

	// --------------------------------------------------------------------
	// Preconditions

	// A display is already set up
	auto display = Case::Display::makeFakeExistingDisplayInjector(this);
	display.inject();

	// No changes are made to the display
	DisplayState state;
	state.what = 0;
	state.token = display.token();

	// --------------------------------------------------------------------
	// Invocation

	uint32_t flags = mFlinger.setDisplayStateLocked(state);

	// --------------------------------------------------------------------
	// Postconditions

	// The returned flags are empty
	EXPECT_EQ(0u, flags);
	}

	TEST_F(SetDisplayStateLockedTest, setDisplayStateLockedDoesNothingIfSurfaceDidNotChange) {
	using Case = SimplePrimaryDisplayCase;

	// --------------------------------------------------------------------
	// Preconditions

	// A display is already set up
	auto display = Case::Display::makeFakeExistingDisplayInjector(this);
	display.inject();

	// There is a surface that can be set.
	sp<mock::GraphicBufferProducer> surface = new mock::GraphicBufferProducer();

	// The current display state has the surface set
	display.mutableCurrentDisplayState().surface = surface;

	// The incoming request sets the same surface
	DisplayState state;
	state.what = DisplayState::eSurfaceChanged;
	state.token = display.token();
	state.surface = surface;

	// --------------------------------------------------------------------
	// Invocation

	uint32_t flags = mFlinger.setDisplayStateLocked(state);

	// --------------------------------------------------------------------
	// Postconditions

	// The returned flags are empty
	EXPECT_EQ(0u, flags);

	// The current display state is unchanged.
	EXPECT_EQ(surface.get(), display.getCurrentDisplayState().surface.get());
	}

	TEST_F(SetDisplayStateLockedTest, setDisplayStateLockedRequestsUpdateIfSurfaceChanged) {
	using Case = SimplePrimaryDisplayCase;

	// --------------------------------------------------------------------
	// Preconditions

	// A display is already set up
	auto display = Case::Display::makeFakeExistingDisplayInjector(this);
	display.inject();

	// There is a surface that can be set.
	sp<mock::GraphicBufferProducer> surface = new mock::GraphicBufferProducer();

	// The current display state does not have a surface
	display.mutableCurrentDisplayState().surface = nullptr;

	// The incoming request sets a surface
	DisplayState state;
	state.what = DisplayState::eSurfaceChanged;
	state.token = display.token();
	state.surface = surface;

	// --------------------------------------------------------------------
	// Invocation

	uint32_t flags = mFlinger.setDisplayStateLocked(state);

	// --------------------------------------------------------------------
	// Postconditions

	// The returned flags indicate a transaction is needed
	EXPECT_EQ(eDisplayTransactionNeeded, flags);

	// The current display layer stack state is set to the new value
	EXPECT_EQ(surface.get(), display.getCurrentDisplayState().surface.get());
	}

	TEST_F(SetDisplayStateLockedTest, setDisplayStateLockedDoesNothingIfLayerStackDidNotChange) {
	using Case = SimplePrimaryDisplayCase;

	// --------------------------------------------------------------------
	// Preconditions

	// A display is already set up
	auto display = Case::Display::makeFakeExistingDisplayInjector(this);
	display.inject();

	// The display has a layer stack set
	display.mutableCurrentDisplayState().layerStack = 456u;

	// The incoming request sets the same layer stack
	DisplayState state;
	state.what = DisplayState::eLayerStackChanged;
	state.token = display.token();
	state.layerStack = 456u;

	// --------------------------------------------------------------------
	// Invocation

	uint32_t flags = mFlinger.setDisplayStateLocked(state);

	// --------------------------------------------------------------------
	// Postconditions

	// The returned flags are empty
	EXPECT_EQ(0u, flags);

	// The current display state is unchanged
	EXPECT_EQ(456u, display.getCurrentDisplayState().layerStack);
	}

	TEST_F(SetDisplayStateLockedTest, setDisplayStateLockedRequestsUpdateIfLayerStackChanged) {
	using Case = SimplePrimaryDisplayCase;

	// --------------------------------------------------------------------
	// Preconditions

	// A display is set up
	auto display = Case::Display::makeFakeExistingDisplayInjector(this);
	display.inject();

	// The display has a layer stack set
	display.mutableCurrentDisplayState().layerStack = 654u;

	// The incoming request sets a different layer stack
	DisplayState state;
	state.what = DisplayState::eLayerStackChanged;
	state.token = display.token();
	state.layerStack = 456u;

	// --------------------------------------------------------------------
	// Invocation

	uint32_t flags = mFlinger.setDisplayStateLocked(state);

	// --------------------------------------------------------------------
	// Postconditions

	// The returned flags indicate a transaction is needed
	EXPECT_EQ(eDisplayTransactionNeeded, flags);

	// The desired display state has been set to the new value.
	EXPECT_EQ(456u, display.getCurrentDisplayState().layerStack);
	}

	TEST_F(SetDisplayStateLockedTest, setDisplayStateLockedDoesNothingIfProjectionDidNotChange) {
	using Case = SimplePrimaryDisplayCase;
	constexpr ui::Rotation initialOrientation = ui::ROTATION_180;
	const Rect initialOrientedDisplayRect = {1, 2, 3, 4};
	const Rect initialLayerStackRect = {5, 6, 7, 8};

	// --------------------------------------------------------------------
	// Preconditions

	// A display is set up
	auto display = Case::Display::makeFakeExistingDisplayInjector(this);
	display.inject();

	// The current display state projection state is all set
	display.mutableCurrentDisplayState().orientation = initialOrientation;
	display.mutableCurrentDisplayState().orientedDisplaySpaceRect = initialOrientedDisplayRect;
	display.mutableCurrentDisplayState().layerStackSpaceRect = initialLayerStackRect;

	// The incoming request sets the same projection state
	DisplayState state;
	state.what = DisplayState::eDisplayProjectionChanged;
	state.token = display.token();
	state.orientation = initialOrientation;
	state.orientedDisplaySpaceRect = initialOrientedDisplayRect;
	state.layerStackSpaceRect = initialLayerStackRect;

	// --------------------------------------------------------------------
	// Invocation

	uint32_t flags = mFlinger.setDisplayStateLocked(state);

	// --------------------------------------------------------------------
	// Postconditions

	// The returned flags are empty
	EXPECT_EQ(0u, flags);

	// The current display state is unchanged
	EXPECT_EQ(initialOrientation, display.getCurrentDisplayState().orientation);

	EXPECT_EQ(initialOrientedDisplayRect,
	display.getCurrentDisplayState().orientedDisplaySpaceRect);
	EXPECT_EQ(initialLayerStackRect, display.getCurrentDisplayState().layerStackSpaceRect);
	}

	TEST_F(SetDisplayStateLockedTest, setDisplayStateLockedRequestsUpdateIfOrientationChanged) {
	using Case = SimplePrimaryDisplayCase;
	constexpr ui::Rotation initialOrientation = ui::ROTATION_90;
	constexpr ui::Rotation desiredOrientation = ui::ROTATION_180;

	// --------------------------------------------------------------------
	// Preconditions

	// A display is set up
	auto display = Case::Display::makeFakeExistingDisplayInjector(this);
	display.inject();

	// The current display state has an orientation set
	display.mutableCurrentDisplayState().orientation = initialOrientation;

	// The incoming request sets a different orientation
	DisplayState state;
	state.what = DisplayState::eDisplayProjectionChanged;
	state.token = display.token();
	state.orientation = desiredOrientation;

	// --------------------------------------------------------------------
	// Invocation

	uint32_t flags = mFlinger.setDisplayStateLocked(state);

	// --------------------------------------------------------------------
	// Postconditions

	// The returned flags indicate a transaction is needed
	EXPECT_EQ(eDisplayTransactionNeeded, flags);

	// The current display state has the new value.
	EXPECT_EQ(desiredOrientation, display.getCurrentDisplayState().orientation);
	}

	TEST_F(SetDisplayStateLockedTest, setDisplayStateLockedRequestsUpdateIfFrameChanged) {
	using Case = SimplePrimaryDisplayCase;
	const Rect initialOrientedDisplayRect = {0, 0, 0, 0};
	const Rect desiredOrientedDisplayRect = {5, 6, 7, 8};

	// --------------------------------------------------------------------
	// Preconditions

	// A display is set up
	auto display = Case::Display::makeFakeExistingDisplayInjector(this);
	display.inject();

	// The current display state does not have a orientedDisplaySpaceRect
	display.mutableCurrentDisplayState().orientedDisplaySpaceRect = initialOrientedDisplayRect;

	// The incoming request sets a orientedDisplaySpaceRect
	DisplayState state;
	state.what = DisplayState::eDisplayProjectionChanged;
	state.token = display.token();
	state.orientedDisplaySpaceRect = desiredOrientedDisplayRect;

	// --------------------------------------------------------------------
	// Invocation

	uint32_t flags = mFlinger.setDisplayStateLocked(state);

	// --------------------------------------------------------------------
	// Postconditions

	// The returned flags indicate a transaction is needed
	EXPECT_EQ(eDisplayTransactionNeeded, flags);

	// The current display state has the new value.
	EXPECT_EQ(desiredOrientedDisplayRect,
	display.getCurrentDisplayState().orientedDisplaySpaceRect);
	}

	TEST_F(SetDisplayStateLockedTest, setDisplayStateLockedRequestsUpdateIfLayerStackRectChanged) {
	using Case = SimplePrimaryDisplayCase;
	const Rect initialLayerStackRect = {0, 0, 0, 0};
	const Rect desiredLayerStackRect = {5, 6, 7, 8};

	// --------------------------------------------------------------------
	// Preconditions

	// A display is set up
	auto display = Case::Display::makeFakeExistingDisplayInjector(this);
	display.inject();

	// The current display state does not have a layerStackSpaceRect
	display.mutableCurrentDisplayState().layerStackSpaceRect = initialLayerStackRect;

	// The incoming request sets a layerStackSpaceRect
	DisplayState state;
	state.what = DisplayState::eDisplayProjectionChanged;
	state.token = display.token();
	state.layerStackSpaceRect = desiredLayerStackRect;

	// --------------------------------------------------------------------
	// Invocation

	uint32_t flags = mFlinger.setDisplayStateLocked(state);

	// --------------------------------------------------------------------
	// Postconditions

	// The returned flags indicate a transaction is needed
	EXPECT_EQ(eDisplayTransactionNeeded, flags);

	// The current display state has the new value.
	EXPECT_EQ(desiredLayerStackRect, display.getCurrentDisplayState().layerStackSpaceRect);
	}

	TEST_F(SetDisplayStateLockedTest, setDisplayStateLockedDoesNothingIfSizeDidNotChange) {
	using Case = SimplePrimaryDisplayCase;
	constexpr uint32_t initialWidth = 1024;
	constexpr uint32_t initialHeight = 768;

	// --------------------------------------------------------------------
	// Preconditions

	// A display is set up
	auto display = Case::Display::makeFakeExistingDisplayInjector(this);
	display.inject();

	// The current display state has a size set
	display.mutableCurrentDisplayState().width = initialWidth;
	display.mutableCurrentDisplayState().height = initialHeight;

	// The incoming request sets the same display size
	DisplayState state;
	state.what = DisplayState::eDisplaySizeChanged;
	state.token = display.token();
	state.width = initialWidth;
	state.height = initialHeight;

	// --------------------------------------------------------------------
	// Invocation

	uint32_t flags = mFlinger.setDisplayStateLocked(state);

	// --------------------------------------------------------------------
	// Postconditions

	// The returned flags are empty
	EXPECT_EQ(0u, flags);

	// The current display state is unchanged
	EXPECT_EQ(initialWidth, display.getCurrentDisplayState().width);
	EXPECT_EQ(initialHeight, display.getCurrentDisplayState().height);
	}

	TEST_F(SetDisplayStateLockedTest, setDisplayStateLockedRequestsUpdateIfWidthChanged) {
	using Case = SimplePrimaryDisplayCase;
	constexpr uint32_t initialWidth = 0;
	constexpr uint32_t desiredWidth = 1024;

	// --------------------------------------------------------------------
	// Preconditions

	// A display is set up
	auto display = Case::Display::makeFakeExistingDisplayInjector(this);
	display.inject();

	// The display does not yet have a width
	display.mutableCurrentDisplayState().width = initialWidth;

	// The incoming request sets a display width
	DisplayState state;
	state.what = DisplayState::eDisplaySizeChanged;
	state.token = display.token();
	state.width = desiredWidth;

	// --------------------------------------------------------------------
	// Invocation

	uint32_t flags = mFlinger.setDisplayStateLocked(state);

	// --------------------------------------------------------------------
	// Postconditions

	// The returned flags indicate a transaction is needed
	EXPECT_EQ(eDisplayTransactionNeeded, flags);

	// The current display state has the new value.
	EXPECT_EQ(desiredWidth, display.getCurrentDisplayState().width);
	}

	TEST_F(SetDisplayStateLockedTest, setDisplayStateLockedRequestsUpdateIfHeightChanged) {
	using Case = SimplePrimaryDisplayCase;
	constexpr uint32_t initialHeight = 0;
	constexpr uint32_t desiredHeight = 768;

	// --------------------------------------------------------------------
	// Preconditions

	// A display is set up
	auto display = Case::Display::makeFakeExistingDisplayInjector(this);
	display.inject();

	// The display does not yet have a height
	display.mutableCurrentDisplayState().height = initialHeight;

	// The incoming request sets a display height
	DisplayState state;
	state.what = DisplayState::eDisplaySizeChanged;
	state.token = display.token();
	state.height = desiredHeight;

	// --------------------------------------------------------------------
	// Invocation

	uint32_t flags = mFlinger.setDisplayStateLocked(state);

	// --------------------------------------------------------------------
	// Postconditions

	// The returned flags indicate a transaction is needed
	EXPECT_EQ(eDisplayTransactionNeeded, flags);

	// The current display state has the new value.
	EXPECT_EQ(desiredHeight, display.getCurrentDisplayState().height);
	}

	} // namespace
	} // namespace android