inputflinger_tests: Put `InstrumentedInputReader` in its own file
I would like to be able to put automated tests for the new
`TouchpadEventMapper` in their own file, rather than
InputReader_tests.cpp. To do this I'll need some of the test utilities
in their own files, too.
As well as moving the code to separate .h and .cpp files, the private
members of `FakeInputReaderContext` were also moved to the bottom of the
definition and the `private:` made explicit.
Bug: 251196347
Test: atest inputflinger_tests
Change-Id: Iad4cb00fc23ecac0e2f71ea21481585fcc80c92f
diff --git a/services/inputflinger/tests/InstrumentedInputReader.h b/services/inputflinger/tests/InstrumentedInputReader.h
new file mode 100644
index 0000000..7f8d556
--- /dev/null
+++ b/services/inputflinger/tests/InstrumentedInputReader.h
@@ -0,0 +1,123 @@
+/*
+ * 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.
+ */
+
+#pragma once
+
+#include <memory>
+#include <queue>
+#include <string>
+
+#include <InputDevice.h>
+#include <InputReader.h>
+#include <gtest/gtest.h>
+#include <utils/StrongPointer.h>
+
+namespace android {
+
+class InstrumentedInputReader : public InputReader {
+public:
+ InstrumentedInputReader(std::shared_ptr<EventHubInterface> eventHub,
+ const sp<InputReaderPolicyInterface>& policy,
+ InputListenerInterface& listener);
+ virtual ~InstrumentedInputReader() {}
+
+ void pushNextDevice(std::shared_ptr<InputDevice> device);
+
+ std::shared_ptr<InputDevice> newDevice(int32_t deviceId, const std::string& name,
+ const std::string& location = "");
+
+ // Make the protected loopOnce method accessible to tests.
+ using InputReader::loopOnce;
+
+protected:
+ virtual std::shared_ptr<InputDevice> createDeviceLocked(
+ int32_t eventHubId, const InputDeviceIdentifier& identifier);
+
+ class FakeInputReaderContext : public ContextImpl {
+ public:
+ FakeInputReaderContext(InputReader* reader)
+ : ContextImpl(reader),
+ mGlobalMetaState(0),
+ mUpdateGlobalMetaStateWasCalled(false),
+ mGeneration(1) {}
+
+ virtual ~FakeInputReaderContext() {}
+
+ void assertUpdateGlobalMetaStateWasCalled() {
+ ASSERT_TRUE(mUpdateGlobalMetaStateWasCalled)
+ << "Expected updateGlobalMetaState() to have been called.";
+ mUpdateGlobalMetaStateWasCalled = false;
+ }
+
+ void setGlobalMetaState(int32_t state) { mGlobalMetaState = state; }
+
+ uint32_t getGeneration() { return mGeneration; }
+
+ void updateGlobalMetaState() override {
+ mUpdateGlobalMetaStateWasCalled = true;
+ ContextImpl::updateGlobalMetaState();
+ }
+
+ int32_t getGlobalMetaState() override {
+ return mGlobalMetaState | ContextImpl::getGlobalMetaState();
+ }
+
+ int32_t bumpGeneration() override {
+ mGeneration = ContextImpl::bumpGeneration();
+ return mGeneration;
+ }
+
+ void requestTimeoutAtTime(nsecs_t when) override { mRequestedTimeout = when; }
+
+ void assertTimeoutWasRequested(nsecs_t when) {
+ ASSERT_TRUE(mRequestedTimeout) << "Expected timeout at time " << when
+ << " but there was no timeout requested.";
+ ASSERT_EQ(when, *mRequestedTimeout);
+ mRequestedTimeout.reset();
+ }
+
+ void assertTimeoutWasNotRequested() {
+ ASSERT_FALSE(mRequestedTimeout) << "Expected no timeout to have been requested,"
+ " but one was requested at time "
+ << *mRequestedTimeout;
+ }
+
+ void getExternalStylusDevices(std::vector<InputDeviceInfo>& outDevices) override {
+ outDevices = mExternalStylusDevices;
+ }
+
+ void setExternalStylusDevices(std::vector<InputDeviceInfo>&& devices) {
+ mExternalStylusDevices = devices;
+ }
+
+ private:
+ int32_t mGlobalMetaState;
+ bool mUpdateGlobalMetaStateWasCalled;
+ int32_t mGeneration;
+ std::optional<nsecs_t> mRequestedTimeout;
+ std::vector<InputDeviceInfo> mExternalStylusDevices;
+ } mFakeContext;
+
+ friend class InputReaderTest;
+
+public:
+ FakeInputReaderContext* getContext() { return &mFakeContext; }
+
+private:
+ std::queue<std::shared_ptr<InputDevice>> mNextDevices;
+};
+
+} // namespace android