diff --git a/services/inputflinger/tests/Android.bp b/services/inputflinger/tests/Android.bp
index d19dbaf..f734e59 100644
--- a/services/inputflinger/tests/Android.bp
+++ b/services/inputflinger/tests/Android.bp
@@ -49,6 +49,7 @@
         "LatencyTracker_test.cpp",
         "TestInputListener.cpp",
         "UinputDevice.cpp",
+        "UnwantedInteractionBlocker_test.cpp",
     ],
     aidl: {
         include_dirs: [
diff --git a/services/inputflinger/tests/UnwantedInteractionBlocker_test.cpp b/services/inputflinger/tests/UnwantedInteractionBlocker_test.cpp
new file mode 100644
index 0000000..a3220cc
--- /dev/null
+++ b/services/inputflinger/tests/UnwantedInteractionBlocker_test.cpp
@@ -0,0 +1,938 @@
+/*
+ * Copyright (C) 2022 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 "../UnwantedInteractionBlocker.h"
+#include <android-base/silent_death_test.h>
+#include <gtest/gtest.h>
+#include <gui/constants.h>
+#include <linux/input.h>
+
+#include "TestInputListener.h"
+
+namespace android {
+
+constexpr int32_t DEVICE_ID = 3;
+constexpr int32_t X_RESOLUTION = 11;
+constexpr int32_t Y_RESOLUTION = 11;
+constexpr int32_t MAJOR_RESOLUTION = 1;
+
+constexpr int POINTER_0_DOWN =
+        AMOTION_EVENT_ACTION_POINTER_DOWN | (0 << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT);
+constexpr int POINTER_1_DOWN =
+        AMOTION_EVENT_ACTION_POINTER_DOWN | (1 << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT);
+constexpr int POINTER_2_DOWN =
+        AMOTION_EVENT_ACTION_POINTER_DOWN | (2 << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT);
+constexpr int POINTER_0_UP =
+        AMOTION_EVENT_ACTION_POINTER_UP | (0 << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT);
+constexpr int POINTER_1_UP =
+        AMOTION_EVENT_ACTION_POINTER_UP | (1 << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT);
+constexpr int POINTER_2_UP =
+        AMOTION_EVENT_ACTION_POINTER_UP | (2 << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT);
+constexpr int DOWN = AMOTION_EVENT_ACTION_DOWN;
+constexpr int MOVE = AMOTION_EVENT_ACTION_MOVE;
+constexpr int UP = AMOTION_EVENT_ACTION_UP;
+constexpr int CANCEL = AMOTION_EVENT_ACTION_CANCEL;
+
+struct PointerData {
+    float x;
+    float y;
+    float major;
+};
+
+static NotifyMotionArgs generateMotionArgs(nsecs_t downTime, nsecs_t eventTime, int32_t action,
+                                           const std::vector<PointerData>& points) {
+    size_t pointerCount = points.size();
+    if (action == AMOTION_EVENT_ACTION_DOWN || action == AMOTION_EVENT_ACTION_UP) {
+        EXPECT_EQ(1U, pointerCount) << "Actions DOWN and UP can only contain a single pointer";
+    }
+
+    PointerProperties pointerProperties[pointerCount];
+    PointerCoords pointerCoords[pointerCount];
+
+    for (size_t i = 0; i < pointerCount; i++) {
+        pointerProperties[i].clear();
+        pointerProperties[i].id = i;
+        pointerProperties[i].toolType = AMOTION_EVENT_TOOL_TYPE_FINGER;
+
+        pointerCoords[i].clear();
+        pointerCoords[i].setAxisValue(AMOTION_EVENT_AXIS_X, points[i].x);
+        pointerCoords[i].setAxisValue(AMOTION_EVENT_AXIS_Y, points[i].y);
+        pointerCoords[i].setAxisValue(AMOTION_EVENT_AXIS_TOUCH_MAJOR, points[i].major);
+    }
+
+    // Define a valid motion event.
+    NotifyMotionArgs args(/* id */ 0, eventTime, 0 /*readTime*/, DEVICE_ID,
+                          AINPUT_SOURCE_TOUCHSCREEN, 0 /*displayId*/, POLICY_FLAG_PASS_TO_USER,
+                          action, /* actionButton */ 0,
+                          /* flags */ 0, AMETA_NONE, /* buttonState */ 0,
+                          MotionClassification::NONE, AMOTION_EVENT_EDGE_FLAG_NONE, pointerCount,
+                          pointerProperties, pointerCoords, /* xPrecision */ 0, /* yPrecision */ 0,
+                          AMOTION_EVENT_INVALID_CURSOR_POSITION,
+                          AMOTION_EVENT_INVALID_CURSOR_POSITION, downTime, /* videoFrames */ {});
+
+    return args;
+}
+
+static InputDeviceInfo generateTestDeviceInfo() {
+    InputDeviceIdentifier identifier;
+
+    auto info = InputDeviceInfo();
+    info.initialize(DEVICE_ID, /*generation*/ 1, /*controllerNumber*/ 1, identifier, "alias",
+                    /*isExternal*/ false, /*hasMic*/ false);
+    info.addSource(AINPUT_SOURCE_TOUCHSCREEN);
+    info.addMotionRange(AMOTION_EVENT_AXIS_X, AINPUT_SOURCE_TOUCHSCREEN, 0, 1599, /*flat*/ 0,
+                        /*fuzz*/ 0, X_RESOLUTION);
+    info.addMotionRange(AMOTION_EVENT_AXIS_Y, AINPUT_SOURCE_TOUCHSCREEN, 0, 2559, /*flat*/ 0,
+                        /*fuzz*/ 0, Y_RESOLUTION);
+    info.addMotionRange(AMOTION_EVENT_AXIS_TOUCH_MAJOR, AINPUT_SOURCE_TOUCHSCREEN, 0, 255,
+                        /*flat*/ 0, /*fuzz*/ 0, MAJOR_RESOLUTION);
+
+    return info;
+}
+
+static AndroidPalmFilterDeviceInfo generatePalmFilterDeviceInfo() {
+    InputDeviceInfo androidInfo = generateTestDeviceInfo();
+    std::optional<AndroidPalmFilterDeviceInfo> info = createPalmFilterDeviceInfo(androidInfo);
+    if (!info) {
+        ADD_FAILURE() << "Could not convert android device info to ::ui version";
+        return {};
+    }
+    return *info;
+}
+
+TEST(DeviceInfoConversionTest, TabletDeviceTest) {
+    AndroidPalmFilterDeviceInfo info = generatePalmFilterDeviceInfo();
+    ASSERT_EQ(X_RESOLUTION, info.x_res);
+    ASSERT_EQ(Y_RESOLUTION, info.y_res);
+    ASSERT_EQ(MAJOR_RESOLUTION, info.touch_major_res);
+    ASSERT_EQ(1599, info.max_x);
+    ASSERT_EQ(2559, info.max_y);
+}
+
+static void assertArgs(const NotifyMotionArgs& args, int32_t action,
+                       const std::vector<std::pair<int32_t /*pointerId*/, PointerData>>& pointers) {
+    ASSERT_EQ(action, args.action);
+    ASSERT_EQ(pointers.size(), args.pointerCount);
+    for (size_t i = 0; i < args.pointerCount; i++) {
+        const auto& [pointerId, pointerData] = pointers[i];
+        ASSERT_EQ(pointerId, args.pointerProperties[i].id);
+        ASSERT_EQ(pointerData.x, args.pointerCoords[i].getX());
+        ASSERT_EQ(pointerData.y, args.pointerCoords[i].getY());
+        ASSERT_EQ(pointerData.major,
+                  args.pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MAJOR));
+    }
+}
+
+TEST(RemovePointerIdsTest, RemoveOnePointer) {
+    NotifyMotionArgs args = generateMotionArgs(/*downTime*/ 0, /*eventTime*/ 0,
+                                               AMOTION_EVENT_ACTION_MOVE, {{1, 2, 3}, {4, 5, 6}});
+
+    NotifyMotionArgs pointer1Only = removePointerIds(args, {0});
+    assertArgs(pointer1Only, AMOTION_EVENT_ACTION_MOVE, {{1, {4, 5, 6}}});
+
+    NotifyMotionArgs pointer0Only = removePointerIds(args, {1});
+    assertArgs(pointer0Only, AMOTION_EVENT_ACTION_MOVE, {{0, {1, 2, 3}}});
+}
+
+/**
+ * Remove 2 out of 3 pointers during a MOVE event.
+ */
+TEST(RemovePointerIdsTest, RemoveTwoPointers) {
+    NotifyMotionArgs args =
+            generateMotionArgs(/*downTime*/ 0, /*eventTime*/ 0, AMOTION_EVENT_ACTION_MOVE,
+                               {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}});
+
+    NotifyMotionArgs pointer1Only = removePointerIds(args, {0, 2});
+    assertArgs(pointer1Only, AMOTION_EVENT_ACTION_MOVE, {{1, {4, 5, 6}}});
+}
+
+/**
+ * Remove an active pointer during a POINTER_DOWN event, and also remove a non-active
+ * pointer during a POINTER_DOWN event.
+ */
+TEST(RemovePointerIdsTest, ActionPointerDown) {
+    NotifyMotionArgs args = generateMotionArgs(/*downTime*/ 0, /*eventTime*/ 0, POINTER_1_DOWN,
+                                               {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}});
+
+    NotifyMotionArgs pointers0And2 = removePointerIds(args, {1});
+    assertArgs(pointers0And2, ACTION_UNKNOWN, {{0, {1, 2, 3}}, {2, {7, 8, 9}}});
+
+    NotifyMotionArgs pointers1And2 = removePointerIds(args, {0});
+    assertArgs(pointers1And2, POINTER_0_DOWN, {{1, {4, 5, 6}}, {2, {7, 8, 9}}});
+}
+
+/**
+ * Remove all pointers during a MOVE event.
+ */
+TEST(RemovePointerIdsTest, RemoveAllPointersDuringMove) {
+    NotifyMotionArgs args = generateMotionArgs(/*downTime*/ 0, /*eventTime*/ 0,
+                                               AMOTION_EVENT_ACTION_MOVE, {{1, 2, 3}, {4, 5, 6}});
+
+    NotifyMotionArgs noPointers = removePointerIds(args, {0, 1});
+    ASSERT_EQ(0u, noPointers.pointerCount);
+}
+
+/**
+ * If we have ACTION_POINTER_DOWN, and we remove all pointers except for the active pointer,
+ * then we should just have ACTION_DOWN. Likewise, a POINTER_UP event should become an UP event.
+ */
+TEST(RemovePointerIdsTest, PointerDownBecomesDown) {
+    NotifyMotionArgs args = generateMotionArgs(/*downTime*/ 0, /*eventTime*/ 0, POINTER_1_DOWN,
+                                               {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}});
+
+    NotifyMotionArgs pointer1 = removePointerIds(args, {0, 2});
+    assertArgs(pointer1, DOWN, {{1, {4, 5, 6}}});
+
+    args.action = POINTER_1_UP;
+    pointer1 = removePointerIds(args, {0, 2});
+    assertArgs(pointer1, UP, {{1, {4, 5, 6}}});
+}
+
+/**
+ * If a pointer that is now going down is canceled, then we can just drop the POINTER_DOWN event.
+ */
+TEST(CancelSuppressedPointersTest, CanceledPointerDownIsDropped) {
+    NotifyMotionArgs args = generateMotionArgs(/*downTime*/ 0, /*eventTime*/ 0, POINTER_1_DOWN,
+                                               {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}});
+    std::vector<NotifyMotionArgs> result =
+            cancelSuppressedPointers(args, /*oldSuppressedPointerIds*/ {},
+                                     /*newSuppressedPointerIds*/ {1});
+    ASSERT_TRUE(result.empty());
+}
+
+/**
+ * If a pointer is already suppressed, the POINTER_UP event for this pointer should be dropped
+ */
+TEST(CancelSuppressedPointersTest, SuppressedPointerUpIsDropped) {
+    NotifyMotionArgs args = generateMotionArgs(/*downTime*/ 0, /*eventTime*/ 0, POINTER_1_UP,
+                                               {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}});
+    std::vector<NotifyMotionArgs> result =
+            cancelSuppressedPointers(args, /*oldSuppressedPointerIds*/ {1},
+                                     /*newSuppressedPointerIds*/ {1});
+    ASSERT_TRUE(result.empty());
+}
+
+/**
+ * If a pointer is already suppressed, it should be removed from a MOVE event.
+ */
+TEST(CancelSuppressedPointersTest, SuppressedPointerIsRemovedDuringMove) {
+    NotifyMotionArgs args = generateMotionArgs(/*downTime*/ 0, /*eventTime*/ 0, MOVE,
+                                               {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}});
+    std::vector<NotifyMotionArgs> result =
+            cancelSuppressedPointers(args, /*oldSuppressedPointerIds*/ {1},
+                                     /*newSuppressedPointerIds*/ {1});
+    ASSERT_EQ(1u, result.size());
+    assertArgs(result[0], MOVE, {{0, {1, 2, 3}}, {2, {7, 8, 9}}});
+}
+
+/**
+ * If a pointer just got canceled during a MOVE event, we should see two events:
+ * 1) ACTION_POINTER_UP with FLAG_CANCELED so that this pointer is lifted
+ * 2) A MOVE event without this pointer
+ */
+TEST(CancelSuppressedPointersTest, NewlySuppressedPointerIsCanceled) {
+    NotifyMotionArgs args = generateMotionArgs(/*downTime*/ 0, /*eventTime*/ 0, MOVE,
+                                               {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}});
+    std::vector<NotifyMotionArgs> result =
+            cancelSuppressedPointers(args, /*oldSuppressedPointerIds*/ {},
+                                     /*newSuppressedPointerIds*/ {1});
+    ASSERT_EQ(2u, result.size());
+    assertArgs(result[0], POINTER_1_UP, {{0, {1, 2, 3}}, {1, {4, 5, 6}}, {2, {7, 8, 9}}});
+    ASSERT_EQ(AMOTION_EVENT_FLAG_CANCELED, result[0].flags);
+    assertArgs(result[1], MOVE, {{0, {1, 2, 3}}, {2, {7, 8, 9}}});
+}
+
+/**
+ * If we have a single pointer that gets canceled during a MOVE, the entire gesture
+ * should be canceled with ACTION_CANCEL.
+ */
+TEST(CancelSuppressedPointersTest, SingleSuppressedPointerIsCanceled) {
+    NotifyMotionArgs args = generateMotionArgs(/*downTime*/ 0, /*eventTime*/ 0, MOVE, {{1, 2, 3}});
+    std::vector<NotifyMotionArgs> result =
+            cancelSuppressedPointers(args, /*oldSuppressedPointerIds*/ {},
+                                     /*newSuppressedPointerIds*/ {0});
+    ASSERT_EQ(1u, result.size());
+    assertArgs(result[0], CANCEL, {{0, {1, 2, 3}}});
+    ASSERT_EQ(AMOTION_EVENT_FLAG_CANCELED, result[0].flags);
+}
+
+/**
+ * If one of 3 pointers gets canceled during a POINTER_UP event, we should proceed with POINTER_UP,
+ * but this event should also have FLAG_CANCELED to indicate that this pointer was unintentional.
+ */
+TEST(CancelSuppressedPointersTest, SuppressedPointer1GoingUpIsCanceled) {
+    NotifyMotionArgs args = generateMotionArgs(/*downTime*/ 0, /*eventTime*/ 0, POINTER_1_UP,
+                                               {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}});
+    std::vector<NotifyMotionArgs> result =
+            cancelSuppressedPointers(args, /*oldSuppressedPointerIds*/ {},
+                                     /*newSuppressedPointerIds*/ {1});
+    ASSERT_EQ(1u, result.size());
+    assertArgs(result[0], POINTER_1_UP, {{0, {1, 2, 3}}, {1, {4, 5, 6}}, {2, {7, 8, 9}}});
+    ASSERT_EQ(AMOTION_EVENT_FLAG_CANCELED, result[0].flags);
+}
+
+/**
+ * Same test as above, but we change the pointer's index to 0 instead of 1. This helps detect
+ * errors with handling pointer index inside the action.
+ */
+TEST(CancelSuppressedPointersTest, SuppressedPointer0GoingUpIsCanceled) {
+    NotifyMotionArgs args = generateMotionArgs(/*downTime*/ 0, /*eventTime*/ 0, POINTER_0_UP,
+                                               {{1, 2, 3}, {4, 5, 6}});
+    std::vector<NotifyMotionArgs> result =
+            cancelSuppressedPointers(args, /*oldSuppressedPointerIds*/ {},
+                                     /*newSuppressedPointerIds*/ {0});
+    ASSERT_EQ(1u, result.size());
+    assertArgs(result[0], POINTER_0_UP, {{0, {1, 2, 3}}, {1, {4, 5, 6}}});
+    ASSERT_EQ(AMOTION_EVENT_FLAG_CANCELED, result[0].flags);
+}
+
+/**
+ * If two pointers are canceled simultaneously during MOVE, we should see a single ACTION_CANCEL
+ * event. This event would cancel the entire gesture.
+ */
+TEST(CancelSuppressedPointersTest, TwoNewlySuppressedPointersAreBothCanceled) {
+    NotifyMotionArgs args =
+            generateMotionArgs(/*downTime*/ 0, /*eventTime*/ 0, MOVE, {{1, 2, 3}, {4, 5, 6}});
+    std::vector<NotifyMotionArgs> result =
+            cancelSuppressedPointers(args, /*oldSuppressedPointerIds*/ {},
+                                     /*newSuppressedPointerIds*/ {0, 1});
+    ASSERT_EQ(1u, result.size());
+    assertArgs(result[0], CANCEL, {{0, {1, 2, 3}}, {1, {4, 5, 6}}});
+    ASSERT_EQ(AMOTION_EVENT_FLAG_CANCELED, result[0].flags);
+}
+
+/**
+ * Similar test to above. During a POINTER_UP event, both pointers are detected as 'palm' and
+ * therefore should be removed. In this case, we should send a single ACTION_CANCEL that
+ * would undo the entire gesture.
+ */
+TEST(CancelSuppressedPointersTest, TwoPointersAreCanceledDuringPointerUp) {
+    NotifyMotionArgs args = generateMotionArgs(/*downTime*/ 0, /*eventTime*/ 0, POINTER_1_UP,
+                                               {{1, 2, 3}, {4, 5, 6}});
+    std::vector<NotifyMotionArgs> result =
+            cancelSuppressedPointers(args, /*oldSuppressedPointerIds*/ {1},
+                                     /*newSuppressedPointerIds*/ {0, 1});
+    ASSERT_EQ(1u, result.size());
+    assertArgs(result[0], CANCEL, {{0, {1, 2, 3}}});
+    ASSERT_EQ(AMOTION_EVENT_FLAG_CANCELED, result[0].flags);
+}
+
+/**
+ * When all pointers have been removed from the touch stream, and we have a new POINTER_DOWN,
+ * this should become a regular DOWN event because it's the only pointer that will be valid now.
+ */
+TEST(CancelSuppressedPointersTest, NewPointerDownBecomesDown) {
+    NotifyMotionArgs args = generateMotionArgs(/*downTime*/ 0, /*eventTime*/ 0, POINTER_2_DOWN,
+                                               {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}});
+    std::vector<NotifyMotionArgs> result =
+            cancelSuppressedPointers(args, /*oldSuppressedPointerIds*/ {0, 1},
+                                     /*newSuppressedPointerIds*/ {0, 1});
+    ASSERT_EQ(1u, result.size());
+    assertArgs(result[0], DOWN, {{2, {7, 8, 9}}});
+    ASSERT_EQ(0, result[0].flags);
+}
+
+/**
+ * Call 'getTouches' for a DOWN event and check that the resulting 'InProgressTouchEvdev'
+ * struct is populated as expected.
+ */
+TEST(GetTouchesTest, ConvertDownEvent) {
+    NotifyMotionArgs args = generateMotionArgs(/*downTime*/ 0, /*eventTime*/ 0, DOWN, {{1, 2, 3}});
+    AndroidPalmFilterDeviceInfo deviceInfo = generatePalmFilterDeviceInfo();
+    SlotState slotState;
+    SlotState oldSlotState = slotState;
+    slotState.update(args);
+    std::vector<::ui::InProgressTouchEvdev> touches =
+            getTouches(args, deviceInfo, oldSlotState, slotState);
+    ASSERT_EQ(1u, touches.size());
+    ::ui::InProgressTouchEvdev expected;
+
+    expected.major = 3;
+    expected.minor = 0;
+    expected.tool_type = MT_TOOL_FINGER;
+    expected.altered = true;
+    expected.was_cancelled = false;
+    expected.cancelled = false;
+    expected.delayed = false;
+    expected.was_delayed = false;
+    expected.held = false;
+    expected.was_held = false;
+    expected.was_touching = false;
+    expected.touching = true;
+    expected.x = 1;
+    expected.y = 2;
+    expected.tracking_id = 0;
+    std::optional<size_t> slot = slotState.getSlotForPointerId(0);
+    ASSERT_TRUE(slot);
+    expected.slot = *slot;
+    expected.pressure = 0;
+    expected.tool_code = BTN_TOOL_FINGER;
+    expected.reported_tool_type = ::ui::EventPointerType::kTouch;
+    expected.stylus_button = false;
+
+    ASSERT_EQ(expected, touches[0]) << toString(touches[0]);
+}
+
+// --- UnwantedInteractionBlockerTest ---
+
+class UnwantedInteractionBlockerTest : public testing::Test {
+protected:
+    TestInputListener mTestListener;
+    std::unique_ptr<UnwantedInteractionBlockerInterface> mBlocker;
+
+    void SetUp() override {
+        mBlocker = std::make_unique<UnwantedInteractionBlocker>(mTestListener,
+                                                                /*enablePalmRejection*/ true);
+    }
+};
+
+/**
+ * Create a basic configuration change and send it to input classifier.
+ * Expect that the event is received by the next input stage, unmodified.
+ */
+TEST_F(UnwantedInteractionBlockerTest, ConfigurationChangedIsPassedToNextListener) {
+    // Create a basic configuration change and send to classifier
+    NotifyConfigurationChangedArgs args(1 /*sequenceNum*/, 2 /*eventTime*/);
+
+    mBlocker->notifyConfigurationChanged(&args);
+    NotifyConfigurationChangedArgs outArgs;
+    ASSERT_NO_FATAL_FAILURE(mTestListener.assertNotifyConfigurationChangedWasCalled(&outArgs));
+    ASSERT_EQ(args, outArgs);
+}
+
+/**
+ * Keys are not handled in 'UnwantedInteractionBlocker' and should be passed
+ * to next stage unmodified.
+ */
+TEST_F(UnwantedInteractionBlockerTest, KeyIsPassedToNextListener) {
+    // Create a basic key event and send to classifier
+    NotifyKeyArgs args(1 /*sequenceNum*/, 2 /*eventTime*/, 21 /*readTime*/, 3 /*deviceId*/,
+                       AINPUT_SOURCE_KEYBOARD, ADISPLAY_ID_DEFAULT, 0 /*policyFlags*/,
+                       AKEY_EVENT_ACTION_DOWN, 4 /*flags*/, AKEYCODE_HOME, 5 /*scanCode*/,
+                       AMETA_NONE, 6 /*downTime*/);
+
+    mBlocker->notifyKey(&args);
+    NotifyKeyArgs outArgs;
+    ASSERT_NO_FATAL_FAILURE(mTestListener.assertNotifyKeyWasCalled(&outArgs));
+    ASSERT_EQ(args, outArgs);
+}
+
+/**
+ * Create a basic motion event. Since it's just a DOWN event, it should not
+ * be detected as palm and should be sent to the next listener stage
+ * unmodified.
+ */
+TEST_F(UnwantedInteractionBlockerTest, DownEventIsPassedToNextListener) {
+    NotifyMotionArgs motionArgs =
+            generateMotionArgs(0 /*downTime*/, 0 /*eventTime*/, DOWN, {{1, 2, 3}});
+    mBlocker->notifyMotion(&motionArgs);
+    NotifyMotionArgs args;
+    ASSERT_NO_FATAL_FAILURE(mTestListener.assertNotifyMotionWasCalled(&args));
+    ASSERT_EQ(motionArgs, args);
+}
+
+/**
+ * Create a basic switch event and send it to the UnwantedInteractionBlocker.
+ * Expect that the event is received by the next input stage, unmodified.
+ */
+TEST_F(UnwantedInteractionBlockerTest, SwitchIsPassedToNextListener) {
+    NotifySwitchArgs args(1 /*sequenceNum*/, 2 /*eventTime*/, 3 /*policyFlags*/, 4 /*switchValues*/,
+                          5 /*switchMask*/);
+
+    mBlocker->notifySwitch(&args);
+    NotifySwitchArgs outArgs;
+    ASSERT_NO_FATAL_FAILURE(mTestListener.assertNotifySwitchWasCalled(&outArgs));
+    ASSERT_EQ(args, outArgs);
+}
+
+/**
+ * Create a basic device reset event and send it to UnwantedInteractionBlocker.
+ * Expect that the event is received by the next input stage, unmodified.
+ */
+TEST_F(UnwantedInteractionBlockerTest, DeviceResetIsPassedToNextListener) {
+    NotifyDeviceResetArgs args(1 /*sequenceNum*/, 2 /*eventTime*/, DEVICE_ID);
+
+    mBlocker->notifyDeviceReset(&args);
+    NotifyDeviceResetArgs outArgs;
+    ASSERT_NO_FATAL_FAILURE(mTestListener.assertNotifyDeviceResetWasCalled(&outArgs));
+    ASSERT_EQ(args, outArgs);
+}
+
+/**
+ * The state should be reset when device reset happens. That means, we can reset in the middle of a
+ * gesture, and start a new stream. There should be no crash. If the state wasn't reset correctly,
+ * a crash due to inconsistent event stream could have occurred.
+ */
+TEST_F(UnwantedInteractionBlockerTest, NoCrashWhenResetHappens) {
+    NotifyMotionArgs args;
+    mBlocker->notifyInputDevicesChanged({generateTestDeviceInfo()});
+    mBlocker->notifyMotion(
+            &(args = generateMotionArgs(0 /*downTime*/, 1 /*eventTime*/, DOWN, {{1, 2, 3}})));
+    mBlocker->notifyMotion(
+            &(args = generateMotionArgs(0 /*downTime*/, 2 /*eventTime*/, MOVE, {{4, 5, 6}})));
+    NotifyDeviceResetArgs resetArgs(1 /*sequenceNum*/, 3 /*eventTime*/, DEVICE_ID);
+    mBlocker->notifyDeviceReset(&resetArgs);
+    // Start a new gesture with a DOWN event, even though the previous event stream was incomplete.
+    mBlocker->notifyMotion(
+            &(args = generateMotionArgs(0 /*downTime*/, 4 /*eventTime*/, DOWN, {{7, 8, 9}})));
+}
+
+/**
+ * If input devices have changed, but the important device info that's used by the
+ * UnwantedInteractionBlocker has not changed, there should not be a reset.
+ */
+TEST_F(UnwantedInteractionBlockerTest, NoResetIfDeviceInfoChanges) {
+    NotifyMotionArgs args;
+    mBlocker->notifyInputDevicesChanged({generateTestDeviceInfo()});
+    mBlocker->notifyMotion(
+            &(args = generateMotionArgs(0 /*downTime*/, 1 /*eventTime*/, DOWN, {{1, 2, 3}})));
+    mBlocker->notifyMotion(
+            &(args = generateMotionArgs(0 /*downTime*/, 2 /*eventTime*/, MOVE, {{4, 5, 6}})));
+
+    // Now pretend the device changed, even though nothing is different for DEVICE_ID in practice.
+    mBlocker->notifyInputDevicesChanged({generateTestDeviceInfo()});
+
+    // The MOVE event continues the gesture that started before 'devices changed', so it should not
+    // cause a crash.
+    mBlocker->notifyMotion(
+            &(args = generateMotionArgs(0 /*downTime*/, 4 /*eventTime*/, MOVE, {{7, 8, 9}})));
+}
+
+using UnwantedInteractionBlockerTestDeathTest = UnwantedInteractionBlockerTest;
+
+/**
+ * The state should be reset when device reset happens. If we receive an inconsistent event after
+ * the reset happens, crash should occur.
+ */
+TEST_F(UnwantedInteractionBlockerTestDeathTest, InconsistentEventAfterResetCausesACrash) {
+    ScopedSilentDeath _silentDeath;
+    NotifyMotionArgs args;
+    mBlocker->notifyInputDevicesChanged({generateTestDeviceInfo()});
+    mBlocker->notifyMotion(
+            &(args = generateMotionArgs(0 /*downTime*/, 1 /*eventTime*/, DOWN, {{1, 2, 3}})));
+    mBlocker->notifyMotion(
+            &(args = generateMotionArgs(0 /*downTime*/, 2 /*eventTime*/, MOVE, {{4, 5, 6}})));
+    NotifyDeviceResetArgs resetArgs(1 /*sequenceNum*/, 3 /*eventTime*/, DEVICE_ID);
+    mBlocker->notifyDeviceReset(&resetArgs);
+    // Sending MOVE without a DOWN -> should crash!
+    ASSERT_DEATH(
+            {
+                mBlocker->notifyMotion(&(args = generateMotionArgs(0 /*downTime*/, 4 /*eventTime*/,
+                                                                   MOVE, {{7, 8, 9}})));
+            },
+            "Could not find slot");
+}
+
+/**
+ * There should be a crash when an inconsistent event is received.
+ */
+TEST_F(UnwantedInteractionBlockerTestDeathTest, WhenMoveWithoutDownCausesACrash) {
+    ScopedSilentDeath _silentDeath;
+    NotifyMotionArgs args = generateMotionArgs(0 /*downTime*/, 1 /*eventTime*/, MOVE, {{1, 2, 3}});
+    mBlocker->notifyInputDevicesChanged({generateTestDeviceInfo()});
+    ASSERT_DEATH({ mBlocker->notifyMotion(&args); }, "Could not find slot");
+}
+
+class PalmRejectorTest : public testing::Test {
+protected:
+    std::unique_ptr<PalmRejector> mPalmRejector;
+
+    void SetUp() override {
+        AndroidPalmFilterDeviceInfo info = generatePalmFilterDeviceInfo();
+        mPalmRejector = std::make_unique<PalmRejector>(info);
+    }
+};
+
+using PalmRejectorTestDeathTest = PalmRejectorTest;
+
+TEST_F(PalmRejectorTestDeathTest, InconsistentEventCausesACrash) {
+    ScopedSilentDeath _silentDeath;
+    constexpr nsecs_t downTime = 0;
+    NotifyMotionArgs args =
+            generateMotionArgs(downTime, 2 /*eventTime*/, MOVE, {{1406.0, 650.0, 52.0}});
+    ASSERT_DEATH({ mPalmRejector->processMotion(args); }, "Could not find slot");
+}
+
+/**
+ * Use PalmRejector with actual touchscreen data and real model.
+ * Two pointers that should both be classified as palms.
+ */
+TEST_F(PalmRejectorTest, TwoPointersAreCanceled) {
+    std::vector<NotifyMotionArgs> argsList;
+    constexpr nsecs_t downTime = 255955749837000;
+
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, downTime, DOWN, {{1342.0, 613.0, 79.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955759313000, MOVE, {{1406.0, 650.0, 52.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955766361000, MOVE, {{1429.0, 672.0, 46.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955775989000, MOVE, {{1417.0, 685.0, 41.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955775989000, POINTER_1_DOWN,
+                               {{1417.0, 685.0, 41.0}, {1062.0, 697.0, 10.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955783039000, MOVE,
+                               {{1414.0, 702.0, 41.0}, {1059.0, 731.0, 12.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955792536000, MOVE,
+                               {{1415.0, 719.0, 44.0}, {1060.0, 760.0, 11.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955799474000, MOVE,
+                               {{1421.0, 733.0, 42.0}, {1065.0, 769.0, 13.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955809177000, MOVE,
+                               {{1426.0, 742.0, 43.0}, {1068.0, 771.0, 13.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955816131000, MOVE,
+                               {{1430.0, 748.0, 45.0}, {1069.0, 772.0, 13.0}}));
+    argsList = mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955825907000, MOVE,
+                               {{1432.0, 750.0, 44.0}, {1069.0, 772.0, 13.0}}));
+    ASSERT_EQ(1u, argsList.size());
+    ASSERT_EQ(0 /* No FLAG_CANCELED */, argsList[0].flags);
+    argsList = mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955832736000, MOVE,
+                               {{1433.0, 751.0, 44.0}, {1070.0, 771.0, 13.0}}));
+    ASSERT_EQ(2u, argsList.size());
+    ASSERT_EQ(POINTER_0_UP, argsList[0].action);
+    ASSERT_EQ(AMOTION_EVENT_FLAG_CANCELED, argsList[0].flags);
+    ASSERT_EQ(MOVE, argsList[1].action);
+    ASSERT_EQ(1u, argsList[1].pointerCount);
+    ASSERT_EQ(0, argsList[1].flags);
+
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955842432000, MOVE,
+                               {{1433.0, 751.0, 42.0}, {1071.0, 770.0, 13.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955849380000, MOVE,
+                               {{1433.0, 751.0, 45.0}, {1072.0, 769.0, 13.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955859046000, MOVE,
+                               {{1433.0, 751.0, 43.0}, {1072.0, 768.0, 13.0}}));
+    argsList = mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955869823000, MOVE,
+                               {{1433.0, 751.0, 45.0}, {1072.0, 767.0, 13.0}}));
+    ASSERT_EQ(1u, argsList.size());
+    ASSERT_EQ(AMOTION_EVENT_ACTION_CANCEL, argsList[0].action);
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955875641000, MOVE,
+                               {{1433.0, 751.0, 43.0}, {1072.0, 766.0, 13.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955882693000, MOVE,
+                               {{1433.0, 750.0, 44.0}, {1072.0, 765.0, 13.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955892324000, MOVE,
+                               {{1433.0, 750.0, 42.0}, {1072.0, 763.0, 14.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955899425000, MOVE,
+                               {{1434.0, 750.0, 44.0}, {1073.0, 761.0, 14.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955909400000, MOVE,
+                               {{1435.0, 750.0, 43.0}, {1073.0, 759.0, 15.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955915885000, MOVE,
+                               {{1436.0, 750.0, 45.0}, {1074.0, 757.0, 15.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955925607000, MOVE,
+                               {{1436.0, 750.0, 44.0}, {1074.0, 755.0, 15.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955932580000, MOVE,
+                               {{1436.0, 750.0, 45.0}, {1074.0, 753.0, 15.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955942231000, MOVE,
+                               {{1436.0, 749.0, 44.0}, {1074.0, 751.0, 15.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955949204000, MOVE,
+                               {{1435.0, 748.0, 45.0}, {1074.0, 749.0, 15.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955959103000, MOVE,
+                               {{1434.0, 746.0, 44.0}, {1074.0, 747.0, 14.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955965884000, MOVE,
+                               {{1433.0, 744.0, 44.0}, {1075.0, 745.0, 14.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955975649000, MOVE,
+                               {{1431.0, 741.0, 43.0}, {1075.0, 742.0, 13.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955982537000, MOVE,
+                               {{1428.0, 738.0, 43.0}, {1076.0, 739.0, 12.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955992284000, MOVE,
+                               {{1400.0, 726.0, 54.0}, {1076.0, 739.0, 13.0}}));
+    argsList = mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955999348000, POINTER_1_UP,
+                               {{1362.0, 716.0, 55.0}, {1076.0, 739.0, 13.0}}));
+    ASSERT_TRUE(argsList.empty());
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955999348000, MOVE, {{1362.0, 716.0, 55.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255956008885000, MOVE, {{1347.0, 707.0, 54.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255956015791000, MOVE, {{1340.0, 698.0, 54.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255956025804000, MOVE, {{1338.0, 694.0, 55.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255956032314000, MOVE, {{1336.0, 690.0, 53.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255956042329000, MOVE, {{1334.0, 685.0, 47.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255956048979000, MOVE, {{1333.0, 679.0, 46.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255956058813000, MOVE, {{1332.0, 672.0, 45.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255956065592000, MOVE, {{1333.0, 666.0, 40.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255956075276000, MOVE, {{1336.0, 661.0, 24.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255956082198000, MOVE, {{1338.0, 656.0, 16.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255956092059000, MOVE, {{1341.0, 649.0, 1.0}}));
+    argsList = mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255956098764000, UP, {{1341.0, 649.0, 1.0}}));
+    ASSERT_TRUE(argsList.empty());
+}
+
+/**
+ * A test implementation of PalmDetectionFilter that allows you to specify which pointer you want
+ * the model to consider 'suppressed'. The pointer is specified using its position (x, y).
+ * Current limitation:
+ *      Pointers may not cross each other in space during motion. Otherwise, any pointer with the
+ *      position matching the suppressed position will be considered "palm".
+ */
+class TestFilter : public ::ui::PalmDetectionFilter {
+public:
+    TestFilter(::ui::SharedPalmDetectionFilterState* state,
+               std::vector<std::pair<float, float>>& suppressedPointers)
+          : ::ui::PalmDetectionFilter(state), mSuppressedPointers(suppressedPointers) {}
+
+    void Filter(const std::vector<::ui::InProgressTouchEvdev>& touches, ::base::TimeTicks time,
+                std::bitset<::ui::kNumTouchEvdevSlots>* slots_to_hold,
+                std::bitset<::ui::kNumTouchEvdevSlots>* slots_to_suppress) override {
+        updateSuppressedSlots(touches);
+        *slots_to_suppress = mSuppressedSlots;
+    }
+
+    std::string FilterNameForTesting() const override { return "test filter"; }
+
+private:
+    void updateSuppressedSlots(const std::vector<::ui::InProgressTouchEvdev>& touches) {
+        for (::ui::InProgressTouchEvdev touch : touches) {
+            for (const auto& [x, y] : mSuppressedPointers) {
+                const float dx = (touch.x - x);
+                const float dy = (touch.y - y);
+                const float distanceSquared = dx * dx + dy * dy;
+                if (distanceSquared < 1) {
+                    mSuppressedSlots.set(touch.slot, true);
+                }
+            }
+        }
+    }
+
+    std::bitset<::ui::kNumTouchEvdevSlots> mSuppressedSlots;
+    std::vector<std::pair<float, float>>& mSuppressedPointers;
+};
+
+class PalmRejectorFakeFilterTest : public testing::Test {
+protected:
+    std::unique_ptr<PalmRejector> mPalmRejector;
+
+    void SetUp() override {
+        std::unique_ptr<::ui::PalmDetectionFilter> filter =
+                std::make_unique<TestFilter>(&mSharedPalmState, /*byref*/ mSuppressedPointers);
+        mPalmRejector =
+                std::make_unique<PalmRejector>(generatePalmFilterDeviceInfo(), std::move(filter));
+    }
+
+    void suppressPointerAtPosition(float x, float y) { mSuppressedPointers.push_back({x, y}); }
+
+private:
+    std::vector<std::pair<float, float>> mSuppressedPointers;
+    ::ui::SharedPalmDetectionFilterState mSharedPalmState; // unused, but we must retain ownership
+};
+
+/**
+ * When a MOVE event happens, the model identifies the pointer as palm. At that time, the palm
+ * rejector should send a POINTER_UP event for this pointer with FLAG_CANCELED, and subsequent
+ * events should have this pointer removed.
+ */
+TEST_F(PalmRejectorFakeFilterTest, OneOfTwoPointersIsCanceled) {
+    std::vector<NotifyMotionArgs> argsList;
+    constexpr nsecs_t downTime = 0;
+
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, downTime, DOWN, {{1342.0, 613.0, 79.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 1, POINTER_1_DOWN,
+                               {{1417.0, 685.0, 41.0}, {1062.0, 697.0, 10.0}}));
+    // Cancel the second pointer
+    suppressPointerAtPosition(1059, 731);
+    argsList = mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955783039000, MOVE,
+                               {{1414.0, 702.0, 41.0}, {1059.0, 731.0, 12.0}}));
+    ASSERT_EQ(2u, argsList.size());
+    // First event - cancel pointer 1
+    ASSERT_EQ(POINTER_1_UP, argsList[0].action);
+    ASSERT_EQ(AMOTION_EVENT_FLAG_CANCELED, argsList[0].flags);
+    // Second event - send MOVE for the remaining pointer
+    ASSERT_EQ(MOVE, argsList[1].action);
+    ASSERT_EQ(0, argsList[1].flags);
+
+    // Future move events only contain 1 pointer, because the second pointer will continue
+    // to be suppressed
+    argsList = mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955783039000, MOVE,
+                               {{1433.0, 751.0, 43.0}, {1072.0, 766.0, 13.0}}));
+    ASSERT_EQ(1u, argsList.size());
+    ASSERT_EQ(MOVE, argsList[0].action);
+    ASSERT_EQ(1u, argsList[0].pointerCount);
+    ASSERT_EQ(1433, argsList[0].pointerCoords[0].getX());
+    ASSERT_EQ(751, argsList[0].pointerCoords[0].getY());
+}
+
+/**
+ * Send two pointers, and suppress both of them. Check that ACTION_CANCEL is generated.
+ * Afterwards:
+ *  1) Future MOVE events are ignored.
+ *  2) When a new pointer goes down, ACTION_DOWN is generated
+ */
+TEST_F(PalmRejectorFakeFilterTest, NewDownEventAfterCancel) {
+    std::vector<NotifyMotionArgs> argsList;
+    constexpr nsecs_t downTime = 0;
+
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, downTime, DOWN, {{1342.0, 613.0, 79.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 1, POINTER_1_DOWN,
+                               {{1417.0, 685.0, 41.0}, {1062.0, 697.0, 10.0}}));
+    // Cancel both pointers
+    suppressPointerAtPosition(1059, 731);
+    suppressPointerAtPosition(1400, 680);
+    argsList = mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 1, MOVE, {{1400, 680, 41}, {1059, 731, 10}}));
+    ASSERT_EQ(1u, argsList.size());
+    // Cancel all
+    ASSERT_EQ(CANCEL, argsList[0].action);
+    ASSERT_EQ(2u, argsList[0].pointerCount);
+    ASSERT_EQ(AMOTION_EVENT_FLAG_CANCELED, argsList[0].flags);
+
+    // Future move events are ignored
+    argsList = mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955783039000, MOVE,
+                               {{1433.0, 751.0, 43.0}, {1072.0, 766.0, 13.0}}));
+    ASSERT_EQ(0u, argsList.size());
+
+    // When a new pointer goes down, a new DOWN event is generated
+    argsList = mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955783039000, POINTER_2_DOWN,
+                               {{1433.0, 751.0, 43.0}, {1072.0, 766.0, 13.0}, {1000, 700, 10}}));
+    ASSERT_EQ(1u, argsList.size());
+    ASSERT_EQ(DOWN, argsList[0].action);
+    ASSERT_EQ(1u, argsList[0].pointerCount);
+    ASSERT_EQ(2, argsList[0].pointerProperties[0].id);
+}
+
+/**
+ * 2 pointers are classified as palm simultaneously. When they are later
+ * released by Android, make sure that we drop both of these POINTER_UP events.
+ * Since they are classified as palm at the same time, we just need to receive a single CANCEL
+ * event. From MotionEvent docs: """A pointer id remains valid until the pointer eventually goes up
+ * (indicated by ACTION_UP or ACTION_POINTER_UP) or when the gesture is canceled (indicated by
+ *  ACTION_CANCEL)."""
+ * This means that generating additional POINTER_UP events is not necessary.
+ * The risk here is that "oldSuppressedPointerIds" will not be correct, because it will update after
+ * each motion, but pointers are canceled one at a time by Android.
+ */
+TEST_F(PalmRejectorFakeFilterTest, TwoPointersCanceledWhenOnePointerGoesUp) {
+    std::vector<NotifyMotionArgs> argsList;
+    constexpr nsecs_t downTime = 0;
+
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, downTime, DOWN, {{1342.0, 613.0, 79.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, /*eventTime*/ 1, POINTER_1_DOWN,
+                               {{1417.0, 685.0, 41.0}, {1062.0, 697.0, 10.0}}));
+    // Suppress both pointers!!
+    suppressPointerAtPosition(1414, 702);
+    suppressPointerAtPosition(1059, 731);
+    argsList = mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955783039000, POINTER_1_UP,
+                               {{1414.0, 702.0, 41.0}, {1059.0, 731.0, 12.0}}));
+    ASSERT_EQ(1u, argsList.size());
+    ASSERT_EQ(CANCEL, argsList[0].action) << MotionEvent::actionToString(argsList[0].action);
+    ASSERT_EQ(AMOTION_EVENT_FLAG_CANCELED, argsList[0].flags);
+
+    // Future move events should not go to the listener.
+    argsList = mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955783049000, MOVE, {{1435.0, 755.0, 43.0}}));
+    ASSERT_EQ(0u, argsList.size());
+
+    argsList = mPalmRejector->processMotion(
+            generateMotionArgs(downTime, 255955783059000, UP, {{1436.0, 756.0, 43.0}}));
+    ASSERT_EQ(0u, argsList.size());
+}
+
+/**
+ * Send 3 pointers, and then cancel one of them during a MOVE event. We should see ACTION_POINTER_UP
+ * generated for that. Next, another pointer is canceled during ACTION_POINTER_DOWN. For that
+ * pointer, we simply shouldn't send the event.
+ */
+TEST_F(PalmRejectorFakeFilterTest, CancelTwoPointers) {
+    std::vector<NotifyMotionArgs> argsList;
+    constexpr nsecs_t downTime = 0;
+
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, downTime, DOWN, {{1342.0, 613.0, 79.0}}));
+    mPalmRejector->processMotion(
+            generateMotionArgs(downTime, /*eventTime*/ 1, POINTER_1_DOWN,
+                               {{1417.0, 685.0, 41.0}, {1062.0, 697.0, 10.0}}));
+
+    // Suppress second pointer (pointer 1)
+    suppressPointerAtPosition(1060, 700);
+    argsList = mPalmRejector->processMotion(
+            generateMotionArgs(downTime, /*eventTime*/ 1, MOVE,
+                               {{1417.0, 685.0, 41.0}, {1060, 700, 10.0}}));
+    ASSERT_EQ(2u, argsList.size());
+    ASSERT_EQ(POINTER_1_UP, argsList[0].action);
+    ASSERT_EQ(AMOTION_EVENT_FLAG_CANCELED, argsList[0].flags);
+
+    ASSERT_EQ(MOVE, argsList[1].action) << MotionEvent::actionToString(argsList[1].action);
+    ASSERT_EQ(0, argsList[1].flags);
+
+    // A new pointer goes down and gets suppressed right away. It should just be dropped
+    suppressPointerAtPosition(1001, 601);
+    argsList = mPalmRejector->processMotion(
+            generateMotionArgs(downTime, /*eventTime*/ 1, POINTER_2_DOWN,
+                               {{1417.0, 685.0, 41.0}, {1062.0, 697.0, 10.0}, {1001, 601, 5}}));
+
+    ASSERT_EQ(0u, argsList.size());
+    // Likewise, pointer that's already canceled should be ignored
+    argsList = mPalmRejector->processMotion(
+            generateMotionArgs(downTime, /*eventTime*/ 1, POINTER_2_UP,
+                               {{1417.0, 685.0, 41.0}, {1062.0, 697.0, 10.0}, {1001, 601, 5}}));
+    ASSERT_EQ(0u, argsList.size());
+
+    // Cancel all pointers when pointer 1 goes up. Pointer 1 was already canceled earlier.
+    suppressPointerAtPosition(1417, 685);
+    argsList = mPalmRejector->processMotion(
+            generateMotionArgs(downTime, /*eventTime*/ 1, POINTER_1_UP,
+                               {{1417.0, 685.0, 41.0}, {1062.0, 697.0, 10.0}}));
+    ASSERT_EQ(1u, argsList.size());
+    ASSERT_EQ(CANCEL, argsList[0].action);
+}
+
+} // namespace android