Extract HardwareState conversion into a class and test it
Putting the conversion logic into its own class makes it more obvious
which variables are used for HardwareState conversion, and also provides
a clean public API to write tests against.
Bug: 251196347
Test: m inputflinger_tests && \
$ANDROID_HOST_OUT/nativetest64/inputflinger_tests/inputflinger_tests \
--gtest_filter='*HardwareStateConverterTest*'
Test: atest inputflinger_tests
Change-Id: I26771887b6b2eae46c9cec7190499da0016fdb1f
diff --git a/services/inputflinger/tests/HardwareStateConverter_test.cpp b/services/inputflinger/tests/HardwareStateConverter_test.cpp
new file mode 100644
index 0000000..7921881
--- /dev/null
+++ b/services/inputflinger/tests/HardwareStateConverter_test.cpp
@@ -0,0 +1,219 @@
+/*
+ * Copyright 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 <EventHub.h>
+#include <gestures/HardwareStateConverter.h>
+#include <gtest/gtest.h>
+#include <linux/input-event-codes.h>
+
+#include "FakeEventHub.h"
+#include "FakeInputReaderPolicy.h"
+#include "InstrumentedInputReader.h"
+#include "TestConstants.h"
+#include "TestInputListener.h"
+
+namespace android {
+
+class HardwareStateConverterTest : public testing::Test {
+protected:
+ static constexpr int32_t DEVICE_ID = END_RESERVED_ID + 1000;
+ static constexpr int32_t EVENTHUB_ID = 1;
+
+ void SetUp() {
+ mFakeEventHub = std::make_unique<FakeEventHub>();
+ mFakePolicy = sp<FakeInputReaderPolicy>::make();
+ mFakeListener = std::make_unique<TestInputListener>();
+ mReader = std::make_unique<InstrumentedInputReader>(mFakeEventHub, mFakePolicy,
+ *mFakeListener);
+ mDevice = newDevice();
+
+ mFakeEventHub->addAbsoluteAxis(EVENTHUB_ID, ABS_MT_SLOT, 0, 7, 0, 0, 0);
+ }
+
+ std::shared_ptr<InputDevice> newDevice() {
+ InputDeviceIdentifier identifier;
+ identifier.name = "device";
+ identifier.location = "USB1";
+ identifier.bus = 0;
+ std::shared_ptr<InputDevice> device =
+ std::make_shared<InputDevice>(mReader->getContext(), DEVICE_ID, /* generation= */ 2,
+ identifier);
+ mReader->pushNextDevice(device);
+ mFakeEventHub->addDevice(EVENTHUB_ID, identifier.name, InputDeviceClass::TOUCHPAD,
+ identifier.bus);
+ mReader->loopOnce();
+ return device;
+ }
+
+ void processAxis(HardwareStateConverter& conv, nsecs_t when, int32_t type, int32_t code,
+ int32_t value) {
+ RawEvent event;
+ event.when = when;
+ event.readTime = READ_TIME;
+ event.deviceId = EVENTHUB_ID;
+ event.type = type;
+ event.code = code;
+ event.value = value;
+ std::optional<SelfContainedHardwareState> schs = conv.processRawEvent(&event);
+ EXPECT_FALSE(schs.has_value());
+ }
+
+ std::optional<SelfContainedHardwareState> processSync(HardwareStateConverter& conv,
+ nsecs_t when) {
+ RawEvent event;
+ event.when = when;
+ event.readTime = READ_TIME;
+ event.deviceId = EVENTHUB_ID;
+ event.type = EV_SYN;
+ event.code = SYN_REPORT;
+ event.value = 0;
+ return conv.processRawEvent(&event);
+ }
+
+ std::shared_ptr<FakeEventHub> mFakeEventHub;
+ sp<FakeInputReaderPolicy> mFakePolicy;
+ std::unique_ptr<TestInputListener> mFakeListener;
+ std::unique_ptr<InstrumentedInputReader> mReader;
+ std::shared_ptr<InputDevice> mDevice;
+};
+
+TEST_F(HardwareStateConverterTest, OneFinger) {
+ const nsecs_t time = 1500000000;
+ InputDeviceContext deviceContext(*mDevice, EVENTHUB_ID);
+ HardwareStateConverter conv(deviceContext);
+
+ processAxis(conv, time, EV_ABS, ABS_MT_SLOT, 0);
+ processAxis(conv, time, EV_ABS, ABS_MT_TRACKING_ID, 123);
+ processAxis(conv, time, EV_ABS, ABS_MT_POSITION_X, 50);
+ processAxis(conv, time, EV_ABS, ABS_MT_POSITION_Y, 100);
+ processAxis(conv, time, EV_ABS, ABS_MT_TOUCH_MAJOR, 5);
+ processAxis(conv, time, EV_ABS, ABS_MT_TOUCH_MINOR, 4);
+ processAxis(conv, time, EV_ABS, ABS_MT_PRESSURE, 42);
+ processAxis(conv, time, EV_ABS, ABS_MT_ORIENTATION, 2);
+
+ processAxis(conv, time, EV_ABS, ABS_X, 50);
+ processAxis(conv, time, EV_ABS, ABS_Y, 100);
+ processAxis(conv, time, EV_ABS, ABS_PRESSURE, 42);
+
+ processAxis(conv, time, EV_KEY, BTN_TOUCH, 1);
+ processAxis(conv, time, EV_KEY, BTN_TOOL_FINGER, 1);
+ std::optional<SelfContainedHardwareState> schs = processSync(conv, time);
+
+ ASSERT_TRUE(schs.has_value());
+ const HardwareState& state = schs->state;
+ EXPECT_NEAR(1.5, state.timestamp, EPSILON);
+ EXPECT_EQ(0, state.buttons_down);
+ EXPECT_EQ(1, state.touch_cnt);
+
+ ASSERT_EQ(1, state.finger_cnt);
+ const FingerState& finger = state.fingers[0];
+ EXPECT_EQ(123, finger.tracking_id);
+ EXPECT_NEAR(50, finger.position_x, EPSILON);
+ EXPECT_NEAR(100, finger.position_y, EPSILON);
+ EXPECT_NEAR(5, finger.touch_major, EPSILON);
+ EXPECT_NEAR(4, finger.touch_minor, EPSILON);
+ EXPECT_NEAR(42, finger.pressure, EPSILON);
+ EXPECT_NEAR(2, finger.orientation, EPSILON);
+ EXPECT_EQ(0u, finger.flags);
+
+ EXPECT_EQ(0, state.rel_x);
+ EXPECT_EQ(0, state.rel_y);
+ EXPECT_EQ(0, state.rel_wheel);
+ EXPECT_EQ(0, state.rel_wheel_hi_res);
+ EXPECT_EQ(0, state.rel_hwheel);
+ EXPECT_NEAR(0.0, state.msc_timestamp, EPSILON);
+}
+
+TEST_F(HardwareStateConverterTest, TwoFingers) {
+ const nsecs_t time = ARBITRARY_TIME;
+ InputDeviceContext deviceContext(*mDevice, EVENTHUB_ID);
+ HardwareStateConverter conv(deviceContext);
+
+ processAxis(conv, time, EV_ABS, ABS_MT_SLOT, 0);
+ processAxis(conv, time, EV_ABS, ABS_MT_TRACKING_ID, 123);
+ processAxis(conv, time, EV_ABS, ABS_MT_POSITION_X, 50);
+ processAxis(conv, time, EV_ABS, ABS_MT_POSITION_Y, 100);
+ processAxis(conv, time, EV_ABS, ABS_MT_TOUCH_MAJOR, 5);
+ processAxis(conv, time, EV_ABS, ABS_MT_TOUCH_MINOR, 4);
+ processAxis(conv, time, EV_ABS, ABS_MT_PRESSURE, 42);
+ processAxis(conv, time, EV_ABS, ABS_MT_ORIENTATION, 2);
+
+ processAxis(conv, time, EV_ABS, ABS_MT_SLOT, 1);
+ processAxis(conv, time, EV_ABS, ABS_MT_TRACKING_ID, 456);
+ processAxis(conv, time, EV_ABS, ABS_MT_POSITION_X, -20);
+ processAxis(conv, time, EV_ABS, ABS_MT_POSITION_Y, 40);
+ processAxis(conv, time, EV_ABS, ABS_MT_TOUCH_MAJOR, 8);
+ processAxis(conv, time, EV_ABS, ABS_MT_TOUCH_MINOR, 7);
+ processAxis(conv, time, EV_ABS, ABS_MT_PRESSURE, 21);
+ processAxis(conv, time, EV_ABS, ABS_MT_ORIENTATION, 1);
+
+ processAxis(conv, time, EV_ABS, ABS_X, 50);
+ processAxis(conv, time, EV_ABS, ABS_Y, 100);
+ processAxis(conv, time, EV_ABS, ABS_PRESSURE, 42);
+
+ processAxis(conv, time, EV_KEY, BTN_TOUCH, 1);
+ processAxis(conv, time, EV_KEY, BTN_TOOL_DOUBLETAP, 1);
+ std::optional<SelfContainedHardwareState> schs = processSync(conv, time);
+
+ ASSERT_TRUE(schs.has_value());
+ ASSERT_EQ(2, schs->state.finger_cnt);
+ const FingerState& finger1 = schs->state.fingers[0];
+ EXPECT_EQ(123, finger1.tracking_id);
+ EXPECT_NEAR(50, finger1.position_x, EPSILON);
+ EXPECT_NEAR(100, finger1.position_y, EPSILON);
+ EXPECT_NEAR(5, finger1.touch_major, EPSILON);
+ EXPECT_NEAR(4, finger1.touch_minor, EPSILON);
+ EXPECT_NEAR(42, finger1.pressure, EPSILON);
+ EXPECT_NEAR(2, finger1.orientation, EPSILON);
+ EXPECT_EQ(0u, finger1.flags);
+
+ const FingerState& finger2 = schs->state.fingers[1];
+ EXPECT_EQ(456, finger2.tracking_id);
+ EXPECT_NEAR(-20, finger2.position_x, EPSILON);
+ EXPECT_NEAR(40, finger2.position_y, EPSILON);
+ EXPECT_NEAR(8, finger2.touch_major, EPSILON);
+ EXPECT_NEAR(7, finger2.touch_minor, EPSILON);
+ EXPECT_NEAR(21, finger2.pressure, EPSILON);
+ EXPECT_NEAR(1, finger2.orientation, EPSILON);
+ EXPECT_EQ(0u, finger2.flags);
+}
+
+TEST_F(HardwareStateConverterTest, ButtonPressed) {
+ const nsecs_t time = ARBITRARY_TIME;
+ InputDeviceContext deviceContext(*mDevice, EVENTHUB_ID);
+ HardwareStateConverter conv(deviceContext);
+
+ processAxis(conv, time, EV_KEY, BTN_LEFT, 1);
+ std::optional<SelfContainedHardwareState> schs = processSync(conv, time);
+
+ ASSERT_TRUE(schs.has_value());
+ EXPECT_EQ(GESTURES_BUTTON_LEFT, schs->state.buttons_down);
+}
+
+TEST_F(HardwareStateConverterTest, MscTimestamp) {
+ const nsecs_t time = ARBITRARY_TIME;
+ mFakeEventHub->setMscEvent(EVENTHUB_ID, MSC_TIMESTAMP);
+ InputDeviceContext deviceContext(*mDevice, EVENTHUB_ID);
+ HardwareStateConverter conv(deviceContext);
+
+ processAxis(conv, time, EV_MSC, MSC_TIMESTAMP, 1200000);
+ std::optional<SelfContainedHardwareState> schs = processSync(conv, time);
+
+ ASSERT_TRUE(schs.has_value());
+ EXPECT_NEAR(1.2, schs->state.msc_timestamp, EPSILON);
+}
+
+} // namespace android