diff --git a/services/inputflinger/tests/Android.bp b/services/inputflinger/tests/Android.bp
index c4f8626..ada2266 100644
--- a/services/inputflinger/tests/Android.bp
+++ b/services/inputflinger/tests/Android.bp
@@ -15,6 +15,7 @@
         "-Werror",
         "-Wextra",
         "-Wno-unused-parameter",
+        "-Wthread-safety",
     ],
     shared_libs: [
         "android.hardware.input.classifier@1.0",
diff --git a/services/inputflinger/tests/InputReader_test.cpp b/services/inputflinger/tests/InputReader_test.cpp
index 31b1652..2b3257d 100644
--- a/services/inputflinger/tests/InputReader_test.cpp
+++ b/services/inputflinger/tests/InputReader_test.cpp
@@ -25,13 +25,18 @@
 #include <TestInputListener.h>
 #include <TouchInputMapper.h>
 
+#include <android-base/thread_annotations.h>
 #include <gtest/gtest.h>
 #include <inttypes.h>
 #include <math.h>
 
-
 namespace android {
 
+using std::chrono_literals::operator""ms;
+
+// Timeout for waiting for an expected event
+static constexpr std::chrono::duration WAIT_TIMEOUT = 100ms;
+
 // An arbitrary time value.
 static const nsecs_t ARBITRARY_TIME = 1234;
 
@@ -164,9 +169,13 @@
 // --- FakeInputReaderPolicy ---
 
 class FakeInputReaderPolicy : public InputReaderPolicyInterface {
+    std::mutex mLock;
+    std::condition_variable mDevicesChangedCondition;
+
     InputReaderConfiguration mConfig;
     KeyedVector<int32_t, sp<FakePointerController> > mPointerControllers;
-    std::vector<InputDeviceInfo> mInputDevices;
+    std::vector<InputDeviceInfo> mInputDevices GUARDED_BY(mLock);
+    bool mInputDevicesChanged GUARDED_BY(mLock){false};
     std::vector<DisplayViewport> mViewports;
     TouchAffineTransformation transform;
 
@@ -177,6 +186,20 @@
     FakeInputReaderPolicy() {
     }
 
+    void assertInputDevicesChanged() {
+        std::unique_lock<std::mutex> lock(mLock);
+        base::ScopedLockAssertion assumeLocked(mLock);
+
+        const bool devicesChanged =
+                mDevicesChangedCondition.wait_for(lock, WAIT_TIMEOUT, [this]() REQUIRES(mLock) {
+                    return mInputDevicesChanged;
+                });
+        if (!devicesChanged) {
+            FAIL() << "Timed out waiting for notifyInputDevicesChanged() to be called.";
+        }
+        mInputDevicesChanged = false;
+    }
+
     virtual void clearViewports() {
         mViewports.clear();
         mConfig.setDisplayViewports(mViewports);
@@ -291,7 +314,10 @@
     }
 
     virtual void notifyInputDevicesChanged(const std::vector<InputDeviceInfo>& inputDevices) {
+        std::scoped_lock<std::mutex> lock(mLock);
         mInputDevices = inputDevices;
+        mInputDevicesChanged = true;
+        mDevicesChangedCondition.notify_all();
     }
 
     virtual sp<KeyCharacterMap> getKeyboardLayoutOverlay(const InputDeviceIdentifier&) {
@@ -342,9 +368,12 @@
         }
     };
 
+    std::mutex mLock;
+    std::condition_variable mEventsCondition;
+
     KeyedVector<int32_t, Device*> mDevices;
     std::vector<std::string> mExcludedDevices;
-    List<RawEvent> mEvents;
+    List<RawEvent> mEvents GUARDED_BY(mLock);
     std::unordered_map<int32_t /*deviceId*/, std::vector<TouchVideoFrame>> mVideoFrames;
 
 public:
@@ -496,6 +525,7 @@
 
     void enqueueEvent(nsecs_t when, int32_t deviceId, int32_t type,
             int32_t code, int32_t value) {
+        std::scoped_lock<std::mutex> lock(mLock);
         RawEvent event;
         event.when = when;
         event.deviceId = deviceId;
@@ -515,8 +545,14 @@
     }
 
     void assertQueueIsEmpty() {
-        ASSERT_EQ(size_t(0), mEvents.size())
-                << "Expected the event queue to be empty (fully consumed).";
+        std::unique_lock<std::mutex> lock(mLock);
+        base::ScopedLockAssertion assumeLocked(mLock);
+        const bool queueIsEmpty =
+                mEventsCondition.wait_for(lock, WAIT_TIMEOUT,
+                                          [this]() REQUIRES(mLock) { return mEvents.size() == 0; });
+        if (!queueIsEmpty) {
+            FAIL() << "Timed out waiting for EventHub queue to be emptied.";
+        }
     }
 
 private:
@@ -619,12 +655,14 @@
     }
 
     virtual size_t getEvents(int, RawEvent* buffer, size_t) {
+        std::scoped_lock<std::mutex> lock(mLock);
         if (mEvents.empty()) {
             return 0;
         }
 
         *buffer = *mEvents.begin();
         mEvents.erase(mEvents.begin());
+        mEventsCondition.notify_all();
         return 1;
     }
 
@@ -877,11 +915,13 @@
     KeyedVector<int32_t, int32_t> mScanCodeStates;
     KeyedVector<int32_t, int32_t> mSwitchStates;
     std::vector<int32_t> mSupportedKeyCodes;
-    RawEvent mLastEvent;
 
-    bool mConfigureWasCalled;
-    bool mResetWasCalled;
-    bool mProcessWasCalled;
+    std::mutex mLock;
+    std::condition_variable mStateChangedCondition;
+    bool mConfigureWasCalled GUARDED_BY(mLock);
+    bool mResetWasCalled GUARDED_BY(mLock);
+    bool mProcessWasCalled GUARDED_BY(mLock);
+    RawEvent mLastEvent GUARDED_BY(mLock);
 
     std::optional<DisplayViewport> mViewport;
 public:
@@ -903,20 +943,41 @@
     }
 
     void assertConfigureWasCalled() {
-        ASSERT_TRUE(mConfigureWasCalled)
-                << "Expected configure() to have been called.";
+        std::unique_lock<std::mutex> lock(mLock);
+        base::ScopedLockAssertion assumeLocked(mLock);
+        const bool configureCalled =
+                mStateChangedCondition.wait_for(lock, WAIT_TIMEOUT, [this]() REQUIRES(mLock) {
+                    return mConfigureWasCalled;
+                });
+        if (!configureCalled) {
+            FAIL() << "Expected configure() to have been called.";
+        }
         mConfigureWasCalled = false;
     }
 
     void assertResetWasCalled() {
-        ASSERT_TRUE(mResetWasCalled)
-                << "Expected reset() to have been called.";
+        std::unique_lock<std::mutex> lock(mLock);
+        base::ScopedLockAssertion assumeLocked(mLock);
+        const bool resetCalled =
+                mStateChangedCondition.wait_for(lock, WAIT_TIMEOUT, [this]() REQUIRES(mLock) {
+                    return mResetWasCalled;
+                });
+        if (!resetCalled) {
+            FAIL() << "Expected reset() to have been called.";
+        }
         mResetWasCalled = false;
     }
 
     void assertProcessWasCalled(RawEvent* outLastEvent = nullptr) {
-        ASSERT_TRUE(mProcessWasCalled)
-                << "Expected process() to have been called.";
+        std::unique_lock<std::mutex> lock(mLock);
+        base::ScopedLockAssertion assumeLocked(mLock);
+        const bool processCalled =
+                mStateChangedCondition.wait_for(lock, WAIT_TIMEOUT, [this]() REQUIRES(mLock) {
+                    return mProcessWasCalled;
+                });
+        if (!processCalled) {
+            FAIL() << "Expected process() to have been called.";
+        }
         if (outLastEvent) {
             *outLastEvent = mLastEvent;
         }
@@ -953,6 +1014,7 @@
     }
 
     virtual void configure(nsecs_t, const InputReaderConfiguration* config, uint32_t changes) {
+        std::scoped_lock<std::mutex> lock(mLock);
         mConfigureWasCalled = true;
 
         // Find the associated viewport if exist.
@@ -960,15 +1022,21 @@
         if (displayPort && (changes & InputReaderConfiguration::CHANGE_DISPLAY_INFO)) {
             mViewport = config->getDisplayViewportByPort(*displayPort);
         }
+
+        mStateChangedCondition.notify_all();
     }
 
     virtual void reset(nsecs_t) {
+        std::scoped_lock<std::mutex> lock(mLock);
         mResetWasCalled = true;
+        mStateChangedCondition.notify_all();
     }
 
     virtual void process(const RawEvent* rawEvent) {
+        std::scoped_lock<std::mutex> lock(mLock);
         mLastEvent = *rawEvent;
         mProcessWasCalled = true;
+        mStateChangedCondition.notify_all();
     }
 
     virtual int32_t getKeyCodeState(uint32_t, int32_t keyCode) {
@@ -1033,23 +1101,22 @@
         }
     }
 
-    void setNextDevice(InputDevice* device) {
-        mNextDevice = device;
-    }
+    void setNextDevice(InputDevice* device) { mNextDevice = device; }
 
     InputDevice* newDevice(int32_t deviceId, int32_t controllerNumber, const std::string& name,
-            uint32_t classes, const std::string& location = "") {
+                           uint32_t classes, const std::string& location = "") {
         InputDeviceIdentifier identifier;
         identifier.name = name;
         identifier.location = location;
         int32_t generation = deviceId + 1;
         return new InputDevice(&mContext, deviceId, generation, controllerNumber, identifier,
-                classes);
+                               classes);
     }
 
 protected:
     virtual InputDevice* createDeviceLocked(int32_t deviceId, int32_t controllerNumber,
-            const InputDeviceIdentifier& identifier, uint32_t classes) {
+                                            const InputDeviceIdentifier& identifier,
+                                            uint32_t classes) {
         if (mNextDevice) {
             InputDevice* device = mNextDevice;
             mNextDevice = nullptr;
@@ -1281,7 +1348,8 @@
         mFakeEventHub->finishDeviceScan();
         mReader->loopOnce();
         mReader->loopOnce();
-        mFakeEventHub->assertQueueIsEmpty();
+        ASSERT_NO_FATAL_FAILURE(mFakePolicy->assertInputDevicesChanged());
+        ASSERT_NO_FATAL_FAILURE(mFakeEventHub->assertQueueIsEmpty());
     }
 
     void disableDevice(int32_t deviceId, InputDevice* device) {
@@ -1316,10 +1384,8 @@
     ASSERT_NO_FATAL_FAILURE(addDevice(2, "ignored",
             0, nullptr)); // no classes so device will be ignored
 
-
     std::vector<InputDeviceInfo> inputDevices;
     mReader->getInputDevices(inputDevices);
-
     ASSERT_EQ(1U, inputDevices.size());
     ASSERT_EQ(1, inputDevices[0].getId());
     ASSERT_STREQ("keyboard", inputDevices[0].getIdentifier().name.c_str());
@@ -1345,7 +1411,7 @@
     FakeInputMapper* mapper = new FakeInputMapper(device, AINPUT_SOURCE_KEYBOARD);
     device->addMapper(mapper);
     mReader->setNextDevice(device);
-    addDevice(deviceId, "fake", deviceClass, nullptr);
+    ASSERT_NO_FATAL_FAILURE(addDevice(deviceId, "fake", deviceClass, nullptr));
 
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyConfigurationChangedWasCalled(nullptr));
 
@@ -1358,20 +1424,20 @@
     disableDevice(deviceId, device);
     mReader->loopOnce();
 
-    mFakeListener->assertNotifyDeviceResetWasCalled(&resetArgs);
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyDeviceResetWasCalled(&resetArgs));
     ASSERT_EQ(ARBITRARY_TIME, resetArgs.eventTime);
     ASSERT_EQ(deviceId, resetArgs.deviceId);
     ASSERT_EQ(device->isEnabled(), false);
 
     disableDevice(deviceId, device);
     mReader->loopOnce();
-    mFakeListener->assertNotifyDeviceResetWasNotCalled();
-    mFakeListener->assertNotifyConfigurationChangedWasNotCalled();
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyDeviceResetWasNotCalled());
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyConfigurationChangedWasNotCalled());
     ASSERT_EQ(device->isEnabled(), false);
 
     enableDevice(deviceId, device);
     mReader->loopOnce();
-    mFakeListener->assertNotifyDeviceResetWasCalled(&resetArgs);
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyDeviceResetWasCalled(&resetArgs));
     ASSERT_EQ(ARBITRARY_TIME, resetArgs.eventTime);
     ASSERT_EQ(deviceId, resetArgs.deviceId);
     ASSERT_EQ(device->isEnabled(), true);
@@ -1529,7 +1595,7 @@
     FakeInputMapper* mapper = new FakeInputMapper(device, AINPUT_SOURCE_KEYBOARD);
     device->addMapper(mapper);
     mReader->setNextDevice(device);
-    addDevice(deviceId, "fake", deviceClass, nullptr);
+    ASSERT_NO_FATAL_FAILURE(addDevice(deviceId, "fake", deviceClass, nullptr));
 
     NotifyDeviceResetArgs resetArgs;
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyDeviceResetWasCalled(&resetArgs));
@@ -1537,19 +1603,19 @@
 
     disableDevice(deviceId, device);
     mReader->loopOnce();
-    mFakeListener->assertNotifyDeviceResetWasCalled(&resetArgs);
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyDeviceResetWasCalled(&resetArgs));
     ASSERT_TRUE(prevSequenceNum < resetArgs.sequenceNum);
     prevSequenceNum = resetArgs.sequenceNum;
 
     enableDevice(deviceId, device);
     mReader->loopOnce();
-    mFakeListener->assertNotifyDeviceResetWasCalled(&resetArgs);
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyDeviceResetWasCalled(&resetArgs));
     ASSERT_TRUE(prevSequenceNum < resetArgs.sequenceNum);
     prevSequenceNum = resetArgs.sequenceNum;
 
     disableDevice(deviceId, device);
     mReader->loopOnce();
-    mFakeListener->assertNotifyDeviceResetWasCalled(&resetArgs);
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyDeviceResetWasCalled(&resetArgs));
     ASSERT_TRUE(prevSequenceNum < resetArgs.sequenceNum);
     prevSequenceNum = resetArgs.sequenceNum;
 }
@@ -1577,6 +1643,7 @@
             DISPLAY_ORIENTATION_0, "local:1", hdmi1, ViewportType::VIEWPORT_EXTERNAL);
     mReader->requestRefreshConfiguration(InputReaderConfiguration::CHANGE_DISPLAY_INFO);
     mReader->loopOnce();
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyConfigurationChangedWasCalled());
 
     // Device should only dispatch to the specified display.
     ASSERT_EQ(deviceId, device->getId());
diff --git a/services/inputflinger/tests/TestInputListener.cpp b/services/inputflinger/tests/TestInputListener.cpp
index 3ee33f1..06b05ac 100644
--- a/services/inputflinger/tests/TestInputListener.cpp
+++ b/services/inputflinger/tests/TestInputListener.cpp
@@ -19,6 +19,15 @@
 
 #include "TestInputListener.h"
 
+namespace {
+
+using std::chrono_literals::operator""ms;
+
+// Timeout for waiting for an expected event
+static constexpr std::chrono::duration WAIT_TIMEOUT = 5ms;
+
+} // namespace
+
 namespace android {
 
 // --- TestInputListener ---
@@ -29,87 +38,117 @@
 
 void TestInputListener::assertNotifyConfigurationChangedWasCalled(
         NotifyConfigurationChangedArgs* outEventArgs) {
-    ASSERT_FALSE(mNotifyConfigurationChangedArgsQueue.empty())
-            << "Expected notifyConfigurationChanged() to have been called.";
-    if (outEventArgs) {
-        *outEventArgs = *mNotifyConfigurationChangedArgsQueue.begin();
-    }
-    mNotifyConfigurationChangedArgsQueue.erase(mNotifyConfigurationChangedArgsQueue.begin());
+    ASSERT_NO_FATAL_FAILURE(
+            assertCalled<NotifyConfigurationChangedArgs>(outEventArgs,
+                                                         "Expected notifyConfigurationChanged() "
+                                                         "to have been called."));
 }
 
 void TestInputListener::assertNotifyConfigurationChangedWasNotCalled() {
-    ASSERT_TRUE(mNotifyConfigurationChangedArgsQueue.empty())
-            << "Expected notifyConfigurationChanged() to not have been called.";
+    ASSERT_NO_FATAL_FAILURE(assertNotCalled<NotifyConfigurationChangedArgs>(
+            "notifyConfigurationChanged() should not be called."));
 }
 
 void TestInputListener::assertNotifyDeviceResetWasCalled(
         NotifyDeviceResetArgs* outEventArgs) {
-    ASSERT_FALSE(mNotifyDeviceResetArgsQueue.empty())
-            << "Expected notifyDeviceReset() to have been called.";
-    if (outEventArgs) {
-        *outEventArgs = *mNotifyDeviceResetArgsQueue.begin();
-    }
-    mNotifyDeviceResetArgsQueue.erase(mNotifyDeviceResetArgsQueue.begin());
+    ASSERT_NO_FATAL_FAILURE(
+            assertCalled<
+                    NotifyDeviceResetArgs>(outEventArgs,
+                                           "Expected notifyDeviceReset() to have been called."));
 }
 
 void TestInputListener::assertNotifyDeviceResetWasNotCalled() {
-    ASSERT_TRUE(mNotifyDeviceResetArgsQueue.empty())
-            << "Expected notifyDeviceReset() to not have been called.";
+    ASSERT_NO_FATAL_FAILURE(
+            assertNotCalled<NotifyDeviceResetArgs>("notifyDeviceReset() should not be called."));
 }
 
 void TestInputListener::assertNotifyKeyWasCalled(NotifyKeyArgs* outEventArgs) {
-    ASSERT_FALSE(mNotifyKeyArgsQueue.empty()) << "Expected notifyKey() to have been called.";
-    if (outEventArgs) {
-        *outEventArgs = *mNotifyKeyArgsQueue.begin();
-    }
-    mNotifyKeyArgsQueue.erase(mNotifyKeyArgsQueue.begin());
+    ASSERT_NO_FATAL_FAILURE(
+            assertCalled<NotifyKeyArgs>(outEventArgs, "Expected notifyKey() to have been called."));
 }
 
 void TestInputListener::assertNotifyKeyWasNotCalled() {
-    ASSERT_TRUE(mNotifyKeyArgsQueue.empty()) << "Expected notifyKey() to not have been called.";
+    ASSERT_NO_FATAL_FAILURE(assertNotCalled<NotifyKeyArgs>("notifyKey() should not be called."));
 }
 
 void TestInputListener::assertNotifyMotionWasCalled(NotifyMotionArgs* outEventArgs) {
-    ASSERT_FALSE(mNotifyMotionArgsQueue.empty()) << "Expected notifyMotion() to have been called.";
-    if (outEventArgs) {
-        *outEventArgs = *mNotifyMotionArgsQueue.begin();
-    }
-    mNotifyMotionArgsQueue.erase(mNotifyMotionArgsQueue.begin());
+    ASSERT_NO_FATAL_FAILURE(
+            assertCalled<NotifyMotionArgs>(outEventArgs,
+                                           "Expected notifyMotion() to have been called."));
 }
 
 void TestInputListener::assertNotifyMotionWasNotCalled() {
-    ASSERT_TRUE(mNotifyMotionArgsQueue.empty())
-            << "Expected notifyMotion() to not have been called.";
+    ASSERT_NO_FATAL_FAILURE(
+            assertNotCalled<NotifySwitchArgs>("notifySwitch() should not be called."));
 }
 
 void TestInputListener::assertNotifySwitchWasCalled(NotifySwitchArgs* outEventArgs) {
-    ASSERT_FALSE(mNotifySwitchArgsQueue.empty())
-            << "Expected notifySwitch() to have been called.";
-    if (outEventArgs) {
-        *outEventArgs = *mNotifySwitchArgsQueue.begin();
+    ASSERT_NO_FATAL_FAILURE(
+            assertCalled<NotifySwitchArgs>(outEventArgs,
+                                           "Expected notifySwitch() to have been called."));
+}
+
+template <class NotifyArgsType>
+void TestInputListener::assertCalled(NotifyArgsType* outEventArgs, std::string message) {
+    std::unique_lock<std::mutex> lock(mLock);
+    base::ScopedLockAssertion assumeLocked(mLock);
+
+    std::vector<NotifyArgsType>& queue = std::get<std::vector<NotifyArgsType>>(mQueues);
+    if (queue.empty()) {
+        const bool eventReceived =
+                mCondition.wait_for(lock, WAIT_TIMEOUT,
+                                    [&queue]() REQUIRES(mLock) { return !queue.empty(); });
+        if (!eventReceived) {
+            FAIL() << "Timed out waiting for event: " << message.c_str();
+        }
     }
-    mNotifySwitchArgsQueue.erase(mNotifySwitchArgsQueue.begin());
+    if (outEventArgs) {
+        *outEventArgs = *queue.begin();
+    }
+    queue.erase(queue.begin());
+}
+
+template <class NotifyArgsType>
+void TestInputListener::assertNotCalled(std::string message) {
+    std::unique_lock<std::mutex> lock(mLock);
+    base::ScopedLockAssertion assumeLocked(mLock);
+
+    std::vector<NotifyArgsType>& queue = std::get<std::vector<NotifyArgsType>>(mQueues);
+    const bool eventReceived = mCondition.wait_for(lock, WAIT_TIMEOUT, [&queue]() REQUIRES(mLock) {
+        return !queue.empty();
+    });
+    if (eventReceived) {
+        FAIL() << "Unexpected event: " << message.c_str();
+    }
+}
+
+template <class NotifyArgsType>
+void TestInputListener::notify(const NotifyArgsType* args) {
+    std::scoped_lock<std::mutex> lock(mLock);
+
+    std::vector<NotifyArgsType>& queue = std::get<std::vector<NotifyArgsType>>(mQueues);
+    queue.push_back(*args);
+    mCondition.notify_all();
 }
 
 void TestInputListener::notifyConfigurationChanged(const NotifyConfigurationChangedArgs* args) {
-    mNotifyConfigurationChangedArgsQueue.push_back(*args);
+    notify<NotifyConfigurationChangedArgs>(args);
 }
 
 void TestInputListener::notifyDeviceReset(const NotifyDeviceResetArgs* args) {
-    mNotifyDeviceResetArgsQueue.push_back(*args);
+    notify<NotifyDeviceResetArgs>(args);
 }
 
 void TestInputListener::notifyKey(const NotifyKeyArgs* args) {
-    mNotifyKeyArgsQueue.push_back(*args);
+    notify<NotifyKeyArgs>(args);
 }
 
 void TestInputListener::notifyMotion(const NotifyMotionArgs* args) {
-    mNotifyMotionArgsQueue.push_back(*args);
+    notify<NotifyMotionArgs>(args);
 }
 
 void TestInputListener::notifySwitch(const NotifySwitchArgs* args) {
-        mNotifySwitchArgsQueue.push_back(*args);
-    }
-
+    notify<NotifySwitchArgs>(args);
+}
 
 } // namespace android
diff --git a/services/inputflinger/tests/TestInputListener.h b/services/inputflinger/tests/TestInputListener.h
index 085d343..945e2ea 100644
--- a/services/inputflinger/tests/TestInputListener.h
+++ b/services/inputflinger/tests/TestInputListener.h
@@ -17,6 +17,7 @@
 #ifndef _UI_TEST_INPUT_LISTENER_H
 #define _UI_TEST_INPUT_LISTENER_H
 
+#include <android-base/thread_annotations.h>
 #include <gtest/gtest.h>
 #include "InputListener.h"
 
@@ -25,13 +26,6 @@
 // --- TestInputListener ---
 
 class TestInputListener : public InputListenerInterface {
-private:
-    std::vector<NotifyConfigurationChangedArgs> mNotifyConfigurationChangedArgsQueue;
-    std::vector<NotifyDeviceResetArgs> mNotifyDeviceResetArgsQueue;
-    std::vector<NotifyKeyArgs> mNotifyKeyArgsQueue;
-    std::vector<NotifyMotionArgs> mNotifyMotionArgsQueue;
-    std::vector<NotifySwitchArgs> mNotifySwitchArgsQueue;
-
 protected:
     virtual ~TestInputListener();
 
@@ -58,15 +52,34 @@
     void assertNotifySwitchWasCalled(NotifySwitchArgs* outEventArgs = nullptr);
 
 private:
-    virtual void notifyConfigurationChanged(const NotifyConfigurationChangedArgs* args);
+    template <class NotifyArgsType>
+    void assertCalled(NotifyArgsType* outEventArgs, std::string message);
 
-    virtual void notifyDeviceReset(const NotifyDeviceResetArgs* args);
+    template <class NotifyArgsType>
+    void assertNotCalled(std::string message);
 
-    virtual void notifyKey(const NotifyKeyArgs* args);
+    template <class NotifyArgsType>
+    void notify(const NotifyArgsType* args);
 
-    virtual void notifyMotion(const NotifyMotionArgs* args);
+    virtual void notifyConfigurationChanged(const NotifyConfigurationChangedArgs* args) override;
 
-    virtual void notifySwitch(const NotifySwitchArgs* args);
+    virtual void notifyDeviceReset(const NotifyDeviceResetArgs* args) override;
+
+    virtual void notifyKey(const NotifyKeyArgs* args) override;
+
+    virtual void notifyMotion(const NotifyMotionArgs* args) override;
+
+    virtual void notifySwitch(const NotifySwitchArgs* args) override;
+
+    std::mutex mLock;
+    std::condition_variable mCondition;
+
+    std::tuple<std::vector<NotifyConfigurationChangedArgs>, //
+               std::vector<NotifyDeviceResetArgs>,          //
+               std::vector<NotifyKeyArgs>,                  //
+               std::vector<NotifyMotionArgs>,               //
+               std::vector<NotifySwitchArgs>>               //
+            mQueues GUARDED_BY(mLock);
 };
 
 } // namespace android