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/*
* Copyright (C) 2015 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 "InputHub.h"
#include <chrono>
#include <memory>
#include <mutex>
#include <linux/input.h>
#include <gtest/gtest.h>
#include <utils/StopWatch.h>
#include <utils/Timers.h>
#include "TestHelpers.h"
// # of milliseconds to fudge stopwatch measurements
#define TIMING_TOLERANCE_MS 25
#define NO_TIMEOUT (-1)
namespace android {
namespace tests {
using namespace std::literals::chrono_literals;
using InputCbFunc = std::function<void(const std::shared_ptr<InputDeviceNode>&, InputEvent&, nsecs_t)>;
using DeviceCbFunc = std::function<void(const std::shared_ptr<InputDeviceNode>&)>;
static const InputCbFunc kNoopInputCb = [](const std::shared_ptr<InputDeviceNode>&, InputEvent&, nsecs_t){};
static const DeviceCbFunc kNoopDeviceCb = [](const std::shared_ptr<InputDeviceNode>&){};
class TestInputCallback : public InputCallbackInterface {
public:
TestInputCallback() :
mInputCb(kNoopInputCb), mDeviceAddedCb(kNoopDeviceCb), mDeviceRemovedCb(kNoopDeviceCb) {}
virtual ~TestInputCallback() = default;
void setInputCallback(const InputCbFunc& cb) { mInputCb = cb; }
void setDeviceAddedCallback(const DeviceCbFunc& cb) { mDeviceAddedCb = cb; }
void setDeviceRemovedCallback(const DeviceCbFunc& cb) { mDeviceRemovedCb = cb; }
virtual void onInputEvent(const std::shared_ptr<InputDeviceNode>& node, InputEvent& event,
nsecs_t event_time) override {
mInputCb(node, event, event_time);
}
virtual void onDeviceAdded(const std::shared_ptr<InputDeviceNode>& node) override {
mDeviceAddedCb(node);
}
virtual void onDeviceRemoved(const std::shared_ptr<InputDeviceNode>& node) override {
mDeviceRemovedCb(node);
}
private:
InputCbFunc mInputCb;
DeviceCbFunc mDeviceAddedCb;
DeviceCbFunc mDeviceRemovedCb;
};
class InputHubTest : public ::testing::Test {
protected:
virtual void SetUp() {
mCallback = std::make_shared<TestInputCallback>();
mInputHub = std::make_shared<InputHub>(mCallback);
}
std::shared_ptr<TestInputCallback> mCallback;
std::shared_ptr<InputHub> mInputHub;
};
TEST_F(InputHubTest, testWake) {
// Call wake() after 100ms.
auto f = delay_async(100ms, [&]() { EXPECT_EQ(OK, mInputHub->wake()); });
StopWatch stopWatch("poll");
EXPECT_EQ(OK, mInputHub->poll());
int32_t elapsedMillis = ns2ms(stopWatch.elapsedTime());
EXPECT_NEAR(100, elapsedMillis, TIMING_TOLERANCE_MS);
}
TEST_F(InputHubTest, DISABLED_testDeviceAdded) {
auto tempDir = std::make_shared<TempDir>();
std::string pathname;
// Expect that this callback will run and set handle and pathname.
mCallback->setDeviceAddedCallback(
[&](const std::shared_ptr<InputDeviceNode>& node) {
pathname = node->getPath();
});
ASSERT_EQ(OK, mInputHub->registerDevicePath(tempDir->getName()));
// Create a new file in tempDir after 100ms.
std::unique_ptr<TempFile> tempFile;
std::mutex tempFileMutex;
auto f = delay_async(100ms,
[&]() {
std::lock_guard<std::mutex> lock(tempFileMutex);
tempFile.reset(tempDir->newTempFile());
});
StopWatch stopWatch("poll");
EXPECT_EQ(OK, mInputHub->poll());
int32_t elapsedMillis = ns2ms(stopWatch.elapsedTime());
EXPECT_NEAR(100, elapsedMillis, TIMING_TOLERANCE_MS);
std::lock_guard<std::mutex> lock(tempFileMutex);
EXPECT_EQ(tempFile->getName(), pathname);
}
TEST_F(InputHubTest, DISABLED_testDeviceRemoved) {
// Create a temp dir and file. Save its name and handle (to be filled in
// once InputHub scans the dir).
auto tempDir = std::make_unique<TempDir>();
auto deviceFile = std::unique_ptr<TempFile>(tempDir->newTempFile());
std::string tempFileName(deviceFile->getName());
std::shared_ptr<InputDeviceNode> tempNode;
// Expect that these callbacks will run for the above device file.
mCallback->setDeviceAddedCallback(
[&](const std::shared_ptr<InputDeviceNode>& node) {
tempNode = node;
});
mCallback->setDeviceRemovedCallback(
[&](const std::shared_ptr<InputDeviceNode>& node) {
EXPECT_EQ(tempNode, node);
});
ASSERT_EQ(OK, mInputHub->registerDevicePath(tempDir->getName()));
// Ensure that tempDir was scanned to find the device.
ASSERT_TRUE(tempNode != nullptr);
auto f = delay_async(100ms, [&]() { deviceFile.reset(); });
StopWatch stopWatch("poll");
EXPECT_EQ(OK, mInputHub->poll());
int32_t elapsedMillis = ns2ms(stopWatch.elapsedTime());
EXPECT_NEAR(100, elapsedMillis, TIMING_TOLERANCE_MS);
}
TEST_F(InputHubTest, DISABLED_testInputEvent) {
// Create a temp dir and file. Save its name and handle (to be filled in
// once InputHub scans the dir.)
auto tempDir = std::make_unique<TempDir>();
auto deviceFile = std::unique_ptr<TempFile>(tempDir->newTempFile());
std::string tempFileName(deviceFile->getName());
// Send a key event corresponding to HOME.
struct input_event iev;
iev.time = { 1, 0 };
iev.type = EV_KEY;
iev.code = KEY_HOME;
iev.value = 0x01;
auto inputDelayMs = 100ms;
auto f = delay_async(inputDelayMs, [&] {
ssize_t nWrite = TEMP_FAILURE_RETRY(write(deviceFile->getFd(), &iev, sizeof(iev)));
ASSERT_EQ(static_cast<ssize_t>(sizeof(iev)), nWrite) << "could not write to "
<< deviceFile->getFd() << ". errno: " << errno;
});
// Expect this callback to run when the input event is read.
nsecs_t expectedWhen = systemTime(CLOCK_MONOTONIC) + ms2ns(inputDelayMs.count());
mCallback->setInputCallback(
[&](const std::shared_ptr<InputDeviceNode>& node, InputEvent& event,
nsecs_t event_time) {
EXPECT_NEAR(expectedWhen, event_time, ms2ns(TIMING_TOLERANCE_MS));
EXPECT_EQ(s2ns(1), event.when);
EXPECT_EQ(tempFileName, node->getPath());
EXPECT_EQ(EV_KEY, event.type);
EXPECT_EQ(KEY_HOME, event.code);
EXPECT_EQ(0x01, event.value);
});
ASSERT_EQ(OK, mInputHub->registerDevicePath(tempDir->getName()));
StopWatch stopWatch("poll");
EXPECT_EQ(OK, mInputHub->poll());
int32_t elapsedMillis = ns2ms(stopWatch.elapsedTime());
EXPECT_NEAR(100, elapsedMillis, TIMING_TOLERANCE_MS);
}
TEST_F(InputHubTest, DISABLED_testCallbackOrder) {
// Create two "devices": one to receive input and the other to go away.
auto tempDir = std::make_unique<TempDir>();
auto deviceFile1 = std::unique_ptr<TempFile>(tempDir->newTempFile());
auto deviceFile2 = std::unique_ptr<TempFile>(tempDir->newTempFile());
std::string tempFileName(deviceFile2->getName());
bool inputCallbackFinished = false, deviceCallbackFinished = false;
// Setup the callback for input events. Should run before the device
// callback.
mCallback->setInputCallback(
[&](const std::shared_ptr<InputDeviceNode>&, InputEvent&, nsecs_t) {
ASSERT_FALSE(deviceCallbackFinished);
inputCallbackFinished = true;
});
// Setup the callback for device removal. Should run after the input
// callback.
mCallback->setDeviceRemovedCallback(
[&](const std::shared_ptr<InputDeviceNode>& node) {
ASSERT_TRUE(inputCallbackFinished)
<< "input callback did not run before device changed callback";
// Make sure the correct device was removed.
EXPECT_EQ(tempFileName, node->getPath());
deviceCallbackFinished = true;
});
ASSERT_EQ(OK, mInputHub->registerDevicePath(tempDir->getName()));
auto f = delay_async(100ms,
[&]() {
// Delete the second device file first.
deviceFile2.reset();
// Then inject an input event into the first device.
struct input_event iev;
iev.time = { 1, 0 };
iev.type = EV_KEY;
iev.code = KEY_HOME;
iev.value = 0x01;
ssize_t nWrite = TEMP_FAILURE_RETRY(write(deviceFile1->getFd(), &iev, sizeof(iev)));
ASSERT_EQ(static_cast<ssize_t>(sizeof(iev)), nWrite) << "could not write to "
<< deviceFile1->getFd() << ". errno: " << errno;
});
StopWatch stopWatch("poll");
EXPECT_EQ(OK, mInputHub->poll());
int32_t elapsedMillis = ns2ms(stopWatch.elapsedTime());
EXPECT_NEAR(100, elapsedMillis, TIMING_TOLERANCE_MS);
EXPECT_TRUE(inputCallbackFinished);
EXPECT_TRUE(deviceCallbackFinished);
}
} // namespace tests
} // namespace android