Merge changes I30c34f13,I36e2e132 into main

* changes:
  [SF] Update only the render rate on the refresh rate indicator
  [SF] Add sysprop to enable vrr config
diff --git a/libs/binder/BpBinder.cpp b/libs/binder/BpBinder.cpp
index 589df9a..ef0ae4f 100644
--- a/libs/binder/BpBinder.cpp
+++ b/libs/binder/BpBinder.cpp
@@ -54,6 +54,11 @@
 // Another arbitrary value a binder count needs to drop below before another callback will be called
 uint32_t BpBinder::sBinderProxyCountLowWatermark = 2000;
 
+std::atomic<uint32_t> BpBinder::sBinderProxyCount(0);
+std::atomic<uint32_t> BpBinder::sBinderProxyCountWarned(0);
+
+static constexpr uint32_t kBinderProxyCountWarnInterval = 5000;
+
 // Log any transactions for which the data exceeds this size
 #define LOG_TRANSACTIONS_OVER_SIZE (300 * 1024)
 
@@ -193,6 +198,18 @@
         }
         sTrackingMap[trackedUid]++;
     }
+    uint32_t numProxies = sBinderProxyCount.fetch_add(1, std::memory_order_relaxed);
+    uint32_t numLastWarned = sBinderProxyCountWarned.load(std::memory_order_relaxed);
+    uint32_t numNextWarn = numLastWarned + kBinderProxyCountWarnInterval;
+    if (numProxies >= numNextWarn) {
+        // Multiple threads can get here, make sure only one of them gets to
+        // update the warn counter.
+        if (sBinderProxyCountWarned.compare_exchange_strong(numLastWarned,
+                                                            numNextWarn,
+                                                            std::memory_order_relaxed)) {
+            ALOGW("Unexpectedly many live BinderProxies: %d\n", numProxies);
+        }
+    }
     return sp<BpBinder>::make(BinderHandle{handle}, trackedUid);
 }
 
@@ -604,6 +621,7 @@
             }
         }
     }
+    --sBinderProxyCount;
 
     if (ipc) {
         ipc->expungeHandle(binderHandle(), this);
@@ -688,6 +706,11 @@
     return 0;
 }
 
+uint32_t BpBinder::getBinderProxyCount()
+{
+    return sBinderProxyCount.load();
+}
+
 void BpBinder::getCountByUid(Vector<uint32_t>& uids, Vector<uint32_t>& counts)
 {
     AutoMutex _l(sTrackingLock);
diff --git a/libs/binder/include/binder/BpBinder.h b/libs/binder/include/binder/BpBinder.h
index 5496d61..a5c6094 100644
--- a/libs/binder/include/binder/BpBinder.h
+++ b/libs/binder/include/binder/BpBinder.h
@@ -87,6 +87,7 @@
     static void         setCountByUidEnabled(bool enable);
     static void         setLimitCallback(binder_proxy_limit_callback cb);
     static void         setBinderProxyCountWatermarks(int high, int low);
+    static uint32_t     getBinderProxyCount();
 
     std::optional<int32_t> getDebugBinderHandle() const;
 
@@ -208,6 +209,8 @@
     static uint32_t                             sBinderProxyCountLowWatermark;
     static bool                                 sBinderProxyThrottleCreate;
     static std::unordered_map<int32_t,uint32_t> sLastLimitCallbackMap;
+    static std::atomic<uint32_t>                sBinderProxyCount;
+    static std::atomic<uint32_t>                sBinderProxyCountWarned;
 };
 
 } // namespace android
diff --git a/libs/binder/ndk/include_ndk/android/binder_status.h b/libs/binder/ndk/include_ndk/android/binder_status.h
index 76c7aac..4786c89 100644
--- a/libs/binder/ndk/include_ndk/android/binder_status.h
+++ b/libs/binder/ndk/include_ndk/android/binder_status.h
@@ -25,6 +25,7 @@
 
 #pragma once
 
+#include <assert.h>
 #include <errno.h>
 #include <stdbool.h>
 #include <stdint.h>
diff --git a/libs/binder/ndk/tests/Android.bp b/libs/binder/ndk/tests/Android.bp
index 8ee396e..8fb755c 100644
--- a/libs/binder/ndk/tests/Android.bp
+++ b/libs/binder/ndk/tests/Android.bp
@@ -80,6 +80,28 @@
     require_root: true,
 }
 
+cc_test_host {
+    name: "libbinder_ndk_unit_test_host",
+    defaults: ["test_libbinder_ndk_defaults"],
+    srcs: ["libbinder_ndk_unit_test_host.cpp"],
+    test_suites: [
+        "general-tests",
+    ],
+    test_options: {
+        unit_test: true,
+    },
+    static_libs: [
+        "libbase",
+        "libbinder_ndk",
+        "libbinder",
+        "libcutils",
+        "libfakeservicemanager",
+        "libgmock",
+        "liblog",
+        "libutils",
+    ],
+}
+
 cc_test {
     name: "binderVendorDoubleLoadTest",
     vendor: true,
diff --git a/libs/binder/ndk/tests/libbinder_ndk_unit_test.cpp b/libs/binder/ndk/tests/libbinder_ndk_unit_test.cpp
index 3724fa1..15708ca 100644
--- a/libs/binder/ndk/tests/libbinder_ndk_unit_test.cpp
+++ b/libs/binder/ndk/tests/libbinder_ndk_unit_test.cpp
@@ -39,7 +39,6 @@
 #include <condition_variable>
 #include <iostream>
 #include <mutex>
-#include <optional>
 #include <thread>
 
 #include "android/binder_ibinder.h"
@@ -433,22 +432,6 @@
     EXPECT_EQ(STATUS_OK, AIBinder_ping(binder.get()));
 }
 
-// TEST(NdkBinder, IsUpdatable) {
-//     bool isUpdatable =
-//     AServiceManager_isUpdatableViaApex("android.hardware.light.ILights/default");
-//     EXPECT_EQ(isUpdatable, true);
-// }
-//
-// TEST(NdkBinder, GetUpdatableViaApex) {
-//     std::optional<std::string> updatableViaApex;
-//     AServiceManager_getUpdatableApexName(
-//             "android.hardware.light.ILights/default", &updatableViaApex,
-//             [](const char* apexName, void* context) {
-//                 *static_cast<std::optional<std::string>*>(context) = apexName;
-//             });
-//     EXPECT_NE(updatableViaApex, std::nullopt) << *updatableViaApex;
-// }
-
 // This is too slow
 TEST(NdkBinder, CheckLazyServiceShutDown) {
     ndk::SpAIBinder binder(AServiceManager_waitForService(kLazyBinderNdkUnitTestService));
diff --git a/libs/binder/ndk/tests/libbinder_ndk_unit_test_host.cpp b/libs/binder/ndk/tests/libbinder_ndk_unit_test_host.cpp
new file mode 100644
index 0000000..0a3021d
--- /dev/null
+++ b/libs/binder/ndk/tests/libbinder_ndk_unit_test_host.cpp
@@ -0,0 +1,104 @@
+/*
+ * Copyright (C) 2023 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.
+ */
+
+#include <android/binder_manager.h>
+#include <binder/IServiceManager.h>
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+#include <utils/String16.h>
+#include <utils/String8.h>
+#include <utils/StrongPointer.h>
+
+#include <optional>
+
+#include "fakeservicemanager/FakeServiceManager.h"
+
+using android::FakeServiceManager;
+using android::setDefaultServiceManager;
+using android::sp;
+using android::String16;
+using android::String8;
+using testing::_;
+using testing::Eq;
+using testing::Mock;
+using testing::NiceMock;
+using testing::Optional;
+using testing::Return;
+
+struct MockServiceManager : FakeServiceManager {
+    MOCK_METHOD1(updatableViaApex, std::optional<String16>(const String16&));
+};
+
+struct AServiceManager : testing::Test {
+    static sp<MockServiceManager> mockSM;
+
+    static void InitMock() {
+        mockSM = new NiceMock<MockServiceManager>;
+        setDefaultServiceManager(mockSM);
+    }
+
+    void TearDown() override { Mock::VerifyAndClear(mockSM.get()); }
+
+    void ExpectUpdatableViaApexReturns(std::optional<String16> apexName) {
+        EXPECT_CALL(*mockSM, updatableViaApex(_)).WillRepeatedly(Return(apexName));
+    }
+};
+
+sp<MockServiceManager> AServiceManager::mockSM;
+
+TEST_F(AServiceManager, isUpdatableViaApex) {
+    auto apexFoo = String16("com.android.hardware.foo");
+    ExpectUpdatableViaApexReturns(apexFoo);
+
+    bool isUpdatable = AServiceManager_isUpdatableViaApex("android.hardware.foo.IFoo/default");
+    EXPECT_EQ(isUpdatable, true);
+}
+
+TEST_F(AServiceManager, isUpdatableViaApex_Not) {
+    ExpectUpdatableViaApexReturns(std::nullopt);
+
+    bool isUpdatable = AServiceManager_isUpdatableViaApex("android.hardware.foo.IFoo/default");
+    EXPECT_EQ(isUpdatable, false);
+}
+
+void getUpdatableApexNameCallback(const char* apexName, void* context) {
+    *(static_cast<std::optional<std::string>*>(context)) = apexName;
+}
+
+TEST_F(AServiceManager, getUpdatableApexName) {
+    auto apexFoo = String16("com.android.hardware.foo");
+    ExpectUpdatableViaApexReturns(apexFoo);
+
+    std::optional<std::string> result;
+    AServiceManager_getUpdatableApexName("android.hardware.foo.IFoo/default", &result,
+                                         getUpdatableApexNameCallback);
+    EXPECT_THAT(result, Optional(std::string(String8(apexFoo))));
+}
+
+TEST_F(AServiceManager, getUpdatableApexName_Null) {
+    ExpectUpdatableViaApexReturns(std::nullopt);
+
+    std::optional<std::string> result;
+    AServiceManager_getUpdatableApexName("android.hardware.foo.IFoo/default", &result,
+                                         getUpdatableApexNameCallback);
+    EXPECT_THAT(result, Eq(std::nullopt));
+}
+
+int main(int argc, char* argv[]) {
+    ::testing::InitGoogleTest(&argc, argv);
+    AServiceManager::InitMock();
+    return RUN_ALL_TESTS();
+}
diff --git a/libs/binder/tests/unit_fuzzers/BufferedTextOutputFuzz.cpp b/libs/binder/tests/unit_fuzzers/BufferedTextOutputFuzz.cpp
index 09cb216..b80ac53 100644
--- a/libs/binder/tests/unit_fuzzers/BufferedTextOutputFuzz.cpp
+++ b/libs/binder/tests/unit_fuzzers/BufferedTextOutputFuzz.cpp
@@ -16,6 +16,7 @@
 
 #include <commonFuzzHelpers.h>
 #include <fuzzer/FuzzedDataProvider.h>
+#include <functional>
 #include <string>
 #include <vector>
 #include "BufferedTextOutput.h"
diff --git a/libs/cputimeinstate/fuzz/cputimeinstate_fuzzer/cputimeinstate_fuzzer.cpp b/libs/cputimeinstate/fuzz/cputimeinstate_fuzzer/cputimeinstate_fuzzer.cpp
index f835997..9df5632 100644
--- a/libs/cputimeinstate/fuzz/cputimeinstate_fuzzer/cputimeinstate_fuzzer.cpp
+++ b/libs/cputimeinstate/fuzz/cputimeinstate_fuzzer/cputimeinstate_fuzzer.cpp
@@ -20,6 +20,7 @@
 #include <fuzzer/FuzzedDataProvider.h>
 #include <android-base/unique_fd.h>
 #include <cputimeinstate.h>
+#include <functional>
 
 using namespace android::bpf;
 
diff --git a/libs/input/MotionPredictor.cpp b/libs/input/MotionPredictor.cpp
index c8d1da7..412931b 100644
--- a/libs/input/MotionPredictor.cpp
+++ b/libs/input/MotionPredictor.cpp
@@ -205,6 +205,13 @@
         coords.setAxisValue(AMOTION_EVENT_AXIS_X, predictedPoint.x);
         coords.setAxisValue(AMOTION_EVENT_AXIS_Y, predictedPoint.y);
         coords.setAxisValue(AMOTION_EVENT_AXIS_PRESSURE, predictedPressure[i]);
+        // Copy forward tilt and orientation from the last event until they are predicted
+        // (b/291789258).
+        coords.setAxisValue(AMOTION_EVENT_AXIS_TILT,
+                            event.getAxisValue(AMOTION_EVENT_AXIS_TILT, 0));
+        coords.setAxisValue(AMOTION_EVENT_AXIS_ORIENTATION,
+                            event.getRawPointerCoords(0)->getAxisValue(
+                                    AMOTION_EVENT_AXIS_ORIENTATION));
 
         predictionTime += mModel->config().predictionInterval;
         if (i == 0) {
diff --git a/services/inputflinger/dispatcher/InputDispatcher.cpp b/services/inputflinger/dispatcher/InputDispatcher.cpp
index 0a1e889..b3be89e 100644
--- a/services/inputflinger/dispatcher/InputDispatcher.cpp
+++ b/services/inputflinger/dispatcher/InputDispatcher.cpp
@@ -714,6 +714,40 @@
     });
 }
 
+/**
+ * In general, touch should be always split between windows. Some exceptions:
+ * 1. Don't split touch if all of the below is true:
+ *     (a) we have an active pointer down *and*
+ *     (b) a new pointer is going down that's from the same device *and*
+ *     (c) the window that's receiving the current pointer does not support split touch.
+ * 2. Don't split mouse events
+ */
+bool shouldSplitTouch(const TouchState& touchState, const MotionEntry& entry) {
+    if (isFromSource(entry.source, AINPUT_SOURCE_MOUSE)) {
+        // We should never split mouse events
+        return false;
+    }
+    for (const TouchedWindow& touchedWindow : touchState.windows) {
+        if (touchedWindow.windowHandle->getInfo()->isSpy()) {
+            // Spy windows should not affect whether or not touch is split.
+            continue;
+        }
+        if (touchedWindow.windowHandle->getInfo()->supportsSplitTouch()) {
+            continue;
+        }
+        if (touchedWindow.windowHandle->getInfo()->inputConfig.test(
+                    gui::WindowInfo::InputConfig::IS_WALLPAPER)) {
+            // Wallpaper window should not affect whether or not touch is split
+            continue;
+        }
+
+        if (touchedWindow.hasTouchingPointers(entry.deviceId)) {
+            return false;
+        }
+    }
+    return true;
+}
+
 } // namespace
 
 // --- InputDispatcher ---
@@ -2218,40 +2252,6 @@
     return responsiveMonitors;
 }
 
-/**
- * In general, touch should be always split between windows. Some exceptions:
- * 1. Don't split touch is if we have an active pointer down, and a new pointer is going down that's
- *    from the same device, *and* the window that's receiving the current pointer does not support
- *    split touch.
- * 2. Don't split mouse events
- */
-bool InputDispatcher::shouldSplitTouch(const TouchState& touchState,
-                                       const MotionEntry& entry) const {
-    if (isFromSource(entry.source, AINPUT_SOURCE_MOUSE)) {
-        // We should never split mouse events
-        return false;
-    }
-    for (const TouchedWindow& touchedWindow : touchState.windows) {
-        if (touchedWindow.windowHandle->getInfo()->isSpy()) {
-            // Spy windows should not affect whether or not touch is split.
-            continue;
-        }
-        if (touchedWindow.windowHandle->getInfo()->supportsSplitTouch()) {
-            continue;
-        }
-        if (touchedWindow.windowHandle->getInfo()->inputConfig.test(
-                    gui::WindowInfo::InputConfig::IS_WALLPAPER)) {
-            // Wallpaper window should not affect whether or not touch is split
-            continue;
-        }
-
-        if (touchedWindow.hasTouchingPointers(entry.deviceId)) {
-            return false;
-        }
-    }
-    return true;
-}
-
 std::vector<InputTarget> InputDispatcher::findTouchedWindowTargetsLocked(
         nsecs_t currentTime, const MotionEntry& entry, bool* outConflictingPointerActions,
         InputEventInjectionResult& outInjectionResult) {
diff --git a/services/inputflinger/dispatcher/InputDispatcher.h b/services/inputflinger/dispatcher/InputDispatcher.h
index 512bc4f..4d145c6 100644
--- a/services/inputflinger/dispatcher/InputDispatcher.h
+++ b/services/inputflinger/dispatcher/InputDispatcher.h
@@ -522,7 +522,6 @@
     // shade is pulled down while we are counting down the timeout).
     void resetNoFocusedWindowTimeoutLocked() REQUIRES(mLock);
 
-    bool shouldSplitTouch(const TouchState& touchState, const MotionEntry& entry) const;
     int32_t getTargetDisplayId(const EventEntry& entry);
     sp<android::gui::WindowInfoHandle> findFocusedWindowTargetLocked(
             nsecs_t currentTime, const EventEntry& entry, nsecs_t* nextWakeupTime,
diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index 31b5e28..e780a1e 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -1252,9 +1252,14 @@
     return mBorderColor;
 }
 
-bool Layer::propagateFrameRateForLayerTree(FrameRate parentFrameRate, bool* transactionNeeded) {
-    // The frame rate for layer tree is this layer's frame rate if present, or the parent frame rate
+bool Layer::propagateFrameRateForLayerTree(FrameRate parentFrameRate, bool overrideChildren,
+                                           bool* transactionNeeded) {
+    // Gets the frame rate to propagate to children.
     const auto frameRate = [&] {
+        if (overrideChildren && parentFrameRate.isValid()) {
+            return parentFrameRate;
+        }
+
         if (mDrawingState.frameRate.isValid()) {
             return mDrawingState.frameRate;
         }
@@ -1268,7 +1273,10 @@
     bool childrenHaveFrameRate = false;
     for (const sp<Layer>& child : mCurrentChildren) {
         childrenHaveFrameRate |=
-                child->propagateFrameRateForLayerTree(frameRate, transactionNeeded);
+                child->propagateFrameRateForLayerTree(frameRate,
+                                                      overrideChildren ||
+                                                              shouldOverrideChildrenFrameRate(),
+                                                      transactionNeeded);
     }
 
     // If we don't have a valid frame rate specification, but the children do, we set this
@@ -1301,7 +1309,7 @@
     }();
 
     bool transactionNeeded = false;
-    root->propagateFrameRateForLayerTree({}, &transactionNeeded);
+    root->propagateFrameRateForLayerTree({}, false, &transactionNeeded);
 
     // TODO(b/195668952): we probably don't need eTraversalNeeded here
     if (transactionNeeded) {
diff --git a/services/surfaceflinger/Layer.h b/services/surfaceflinger/Layer.h
index d5e2185..40882f4 100644
--- a/services/surfaceflinger/Layer.h
+++ b/services/surfaceflinger/Layer.h
@@ -1102,7 +1102,8 @@
                                           const std::vector<Layer*>& layersInTree);
 
     void updateTreeHasFrameRateVote();
-    bool propagateFrameRateForLayerTree(FrameRate parentFrameRate, bool* transactionNeeded);
+    bool propagateFrameRateForLayerTree(FrameRate parentFrameRate, bool overrideChildren,
+                                        bool* transactionNeeded);
     void setZOrderRelativeOf(const wp<Layer>& relativeOf);
     bool isTrustedOverlay() const;
     gui::DropInputMode getDropInputMode() const;
@@ -1164,6 +1165,11 @@
     void transferAvailableJankData(const std::deque<sp<CallbackHandle>>& handles,
                                    std::vector<JankData>& jankData);
 
+    bool shouldOverrideChildrenFrameRate() const {
+        return getDrawingState().frameRateSelectionStrategy ==
+                FrameRateSelectionStrategy::OverrideChildren;
+    }
+
     // Cached properties computed from drawing state
     // Effective transform taking into account parent transforms and any parent scaling, which is
     // a transform from the current layer coordinate space to display(screen) coordinate space.
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 1a24332..ecf2310 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -7028,7 +7028,10 @@
             }
             case 1041: { // Transaction tracing
                 if (mTransactionTracing) {
-                    if (data.readInt32()) {
+                    int arg = data.readInt32();
+                    if (arg == -1) {
+                        mTransactionTracing.reset();
+                    } else if (arg > 0) {
                         // Transaction tracing is always running but allow the user to temporarily
                         // increase the buffer when actively debugging.
                         mTransactionTracing->setBufferSize(
diff --git a/services/surfaceflinger/tests/unittests/Android.bp b/services/surfaceflinger/tests/unittests/Android.bp
index 8deff85..f4516c7 100644
--- a/services/surfaceflinger/tests/unittests/Android.bp
+++ b/services/surfaceflinger/tests/unittests/Android.bp
@@ -87,6 +87,7 @@
         "FramebufferSurfaceTest.cpp",
         "FrameRateOverrideMappingsTest.cpp",
         "FrameRateSelectionPriorityTest.cpp",
+        "FrameRateSelectionStrategyTest.cpp",
         "FrameTimelineTest.cpp",
         "GameModeTest.cpp",
         "HWComposerTest.cpp",
diff --git a/services/surfaceflinger/tests/unittests/FrameRateSelectionStrategyTest.cpp b/services/surfaceflinger/tests/unittests/FrameRateSelectionStrategyTest.cpp
new file mode 100644
index 0000000..ffe6f24
--- /dev/null
+++ b/services/surfaceflinger/tests/unittests/FrameRateSelectionStrategyTest.cpp
@@ -0,0 +1,159 @@
+/*
+ * Copyright 2023 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 <gmock/gmock.h>
+#include <gtest/gtest.h>
+#include <gui/LayerMetadata.h>
+
+#include "Layer.h"
+#include "LayerTestUtils.h"
+#include "TestableSurfaceFlinger.h"
+#include "mock/DisplayHardware/MockComposer.h"
+
+namespace android {
+
+using testing::DoAll;
+using testing::Mock;
+using testing::SetArgPointee;
+
+using android::Hwc2::IComposer;
+using android::Hwc2::IComposerClient;
+
+using scheduler::LayerHistory;
+
+using FrameRate = Layer::FrameRate;
+using FrameRateCompatibility = Layer::FrameRateCompatibility;
+using FrameRateSelectionStrategy = scheduler::LayerInfo::FrameRateSelectionStrategy;
+
+/**
+ * This class tests the behaviour of Layer::setFrameRateSelectionStrategy.
+ */
+class FrameRateSelectionStrategyTest : public BaseLayerTest {
+protected:
+    const FrameRate FRAME_RATE_VOTE1 = FrameRate(11_Hz, FrameRateCompatibility::Default);
+    const FrameRate FRAME_RATE_VOTE2 = FrameRate(22_Hz, FrameRateCompatibility::Default);
+    const FrameRate FRAME_RATE_VOTE3 = FrameRate(33_Hz, FrameRateCompatibility::Default);
+    const FrameRate FRAME_RATE_TREE = FrameRate(Fps(), FrameRateCompatibility::NoVote);
+
+    FrameRateSelectionStrategyTest();
+
+    void addChild(sp<Layer> layer, sp<Layer> child);
+    void removeChild(sp<Layer> layer, sp<Layer> child);
+    void commitTransaction();
+
+    std::vector<sp<Layer>> mLayers;
+};
+
+FrameRateSelectionStrategyTest::FrameRateSelectionStrategyTest() {
+    const ::testing::TestInfo* const test_info =
+            ::testing::UnitTest::GetInstance()->current_test_info();
+    ALOGD("**** Setting up for %s.%s\n", test_info->test_case_name(), test_info->name());
+
+    mFlinger.setupComposer(std::make_unique<Hwc2::mock::Composer>());
+}
+
+void FrameRateSelectionStrategyTest::addChild(sp<Layer> layer, sp<Layer> child) {
+    layer->addChild(child);
+}
+
+void FrameRateSelectionStrategyTest::removeChild(sp<Layer> layer, sp<Layer> child) {
+    layer->removeChild(child);
+}
+
+void FrameRateSelectionStrategyTest::commitTransaction() {
+    for (auto layer : mLayers) {
+        layer->commitTransaction();
+    }
+}
+
+namespace {
+
+INSTANTIATE_TEST_SUITE_P(PerLayerType, FrameRateSelectionStrategyTest,
+                         testing::Values(std::make_shared<BufferStateLayerFactory>(),
+                                         std::make_shared<EffectLayerFactory>()),
+                         PrintToStringParamName);
+
+TEST_P(FrameRateSelectionStrategyTest, SetAndGet) {
+    EXPECT_CALL(*mFlinger.scheduler(), scheduleFrame()).Times(1);
+
+    const auto& layerFactory = GetParam();
+    auto layer = mLayers.emplace_back(layerFactory->createLayer(mFlinger));
+    layer->setFrameRate(FRAME_RATE_VOTE1.vote);
+    layer->setFrameRateSelectionStrategy(FrameRateSelectionStrategy::OverrideChildren);
+    commitTransaction();
+    EXPECT_EQ(FRAME_RATE_VOTE1, layer->getFrameRateForLayerTree());
+    EXPECT_EQ(FrameRateSelectionStrategy::OverrideChildren,
+              layer->getDrawingState().frameRateSelectionStrategy);
+}
+
+TEST_P(FrameRateSelectionStrategyTest, SetChildAndGetParent) {
+    EXPECT_CALL(*mFlinger.scheduler(), scheduleFrame()).Times(1);
+
+    const auto& layerFactory = GetParam();
+    auto parent = mLayers.emplace_back(layerFactory->createLayer(mFlinger));
+    auto child1 = mLayers.emplace_back(layerFactory->createLayer(mFlinger));
+    auto child2 = mLayers.emplace_back(layerFactory->createLayer(mFlinger));
+    addChild(parent, child1);
+    addChild(child1, child2);
+
+    child2->setFrameRate(FRAME_RATE_VOTE1.vote);
+    child2->setFrameRateSelectionStrategy(FrameRateSelectionStrategy::OverrideChildren);
+    commitTransaction();
+    EXPECT_EQ(FRAME_RATE_TREE, parent->getFrameRateForLayerTree());
+    EXPECT_EQ(FrameRateSelectionStrategy::Self,
+              parent->getDrawingState().frameRateSelectionStrategy);
+    EXPECT_EQ(FRAME_RATE_TREE, child1->getFrameRateForLayerTree());
+    EXPECT_EQ(FrameRateSelectionStrategy::Self,
+              child1->getDrawingState().frameRateSelectionStrategy);
+    EXPECT_EQ(FRAME_RATE_VOTE1, child2->getFrameRateForLayerTree());
+    EXPECT_EQ(FrameRateSelectionStrategy::OverrideChildren,
+              child2->getDrawingState().frameRateSelectionStrategy);
+}
+
+TEST_P(FrameRateSelectionStrategyTest, SetParentAndGet) {
+    EXPECT_CALL(*mFlinger.scheduler(), scheduleFrame()).Times(1);
+
+    const auto& layerFactory = GetParam();
+    auto layer1 = mLayers.emplace_back(layerFactory->createLayer(mFlinger));
+    auto layer2 = mLayers.emplace_back(layerFactory->createLayer(mFlinger));
+    auto layer3 = mLayers.emplace_back(layerFactory->createLayer(mFlinger));
+    addChild(layer1, layer2);
+    addChild(layer2, layer3);
+
+    layer1->setFrameRate(FRAME_RATE_VOTE1.vote);
+    layer1->setFrameRate(FRAME_RATE_VOTE1.vote);
+    layer1->setFrameRateSelectionStrategy(FrameRateSelectionStrategy::OverrideChildren);
+    layer2->setFrameRate(FRAME_RATE_VOTE2.vote);
+    layer2->setFrameRateSelectionStrategy(FrameRateSelectionStrategy::OverrideChildren);
+    layer3->setFrameRate(FRAME_RATE_VOTE3.vote);
+    commitTransaction();
+
+    EXPECT_EQ(FRAME_RATE_VOTE1, layer1->getFrameRateForLayerTree());
+    EXPECT_EQ(FrameRateSelectionStrategy::OverrideChildren,
+              layer1->getDrawingState().frameRateSelectionStrategy);
+    EXPECT_EQ(FRAME_RATE_VOTE1, layer2->getFrameRateForLayerTree());
+    EXPECT_EQ(FrameRateSelectionStrategy::OverrideChildren,
+              layer2->getDrawingState().frameRateSelectionStrategy);
+    EXPECT_EQ(FRAME_RATE_VOTE1, layer3->getFrameRateForLayerTree());
+    EXPECT_EQ(FrameRateSelectionStrategy::Self,
+              layer3->getDrawingState().frameRateSelectionStrategy);
+}
+
+} // namespace
+} // namespace android
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