159 lines
6.2 KiB
C++
159 lines
6.2 KiB
C++
//
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// Copyright 2010 The Android Open Source Project
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//
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#include <ui/InputTransport.h>
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#include <utils/Timers.h>
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#include <utils/StopWatch.h>
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#include <gtest/gtest.h>
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#include <unistd.h>
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#include <time.h>
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#include <sys/mman.h>
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#include <cutils/ashmem.h>
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#include "../../utils/tests/TestHelpers.h"
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namespace android {
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class InputChannelTest : public testing::Test {
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protected:
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virtual void SetUp() { }
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virtual void TearDown() { }
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};
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TEST_F(InputChannelTest, ConstructorAndDestructor_TakesOwnershipOfFileDescriptors) {
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// Our purpose here is to verify that the input channel destructor closes the
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// file descriptors provided to it. One easy way is to provide it with one end
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// of a pipe and to check for EPIPE on the other end after the channel is destroyed.
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Pipe fakeAshmem, sendPipe, receivePipe;
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sp<InputChannel> inputChannel = new InputChannel(String8("channel name"),
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fakeAshmem.sendFd, receivePipe.receiveFd, sendPipe.sendFd);
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EXPECT_STREQ("channel name", inputChannel->getName().string())
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<< "channel should have provided name";
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EXPECT_EQ(fakeAshmem.sendFd, inputChannel->getAshmemFd())
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<< "channel should have provided ashmem fd";
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EXPECT_EQ(receivePipe.receiveFd, inputChannel->getReceivePipeFd())
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<< "channel should have provided receive pipe fd";
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EXPECT_EQ(sendPipe.sendFd, inputChannel->getSendPipeFd())
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<< "channel should have provided send pipe fd";
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inputChannel.clear(); // destroys input channel
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EXPECT_EQ(-EPIPE, fakeAshmem.readSignal())
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<< "channel should have closed ashmem fd when destroyed";
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EXPECT_EQ(-EPIPE, receivePipe.writeSignal())
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<< "channel should have closed receive pipe fd when destroyed";
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EXPECT_EQ(-EPIPE, sendPipe.readSignal())
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<< "channel should have closed send pipe fd when destroyed";
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// clean up fds of Pipe endpoints that were closed so we don't try to close them again
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fakeAshmem.sendFd = -1;
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receivePipe.receiveFd = -1;
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sendPipe.sendFd = -1;
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}
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TEST_F(InputChannelTest, OpenInputChannelPair_ReturnsAPairOfConnectedChannels) {
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sp<InputChannel> serverChannel, clientChannel;
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status_t result = InputChannel::openInputChannelPair(String8("channel name"),
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serverChannel, clientChannel);
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ASSERT_EQ(OK, result)
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<< "should have successfully opened a channel pair";
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// Name
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EXPECT_STREQ("channel name (server)", serverChannel->getName().string())
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<< "server channel should have suffixed name";
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EXPECT_STREQ("channel name (client)", clientChannel->getName().string())
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<< "client channel should have suffixed name";
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// Ashmem uniqueness
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EXPECT_NE(serverChannel->getAshmemFd(), clientChannel->getAshmemFd())
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<< "server and client channel should have different ashmem fds because it was dup'd";
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// Ashmem usability
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ssize_t serverAshmemSize = ashmem_get_size_region(serverChannel->getAshmemFd());
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ssize_t clientAshmemSize = ashmem_get_size_region(clientChannel->getAshmemFd());
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uint32_t* serverAshmem = static_cast<uint32_t*>(mmap(NULL, serverAshmemSize,
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PROT_READ | PROT_WRITE, MAP_SHARED, serverChannel->getAshmemFd(), 0));
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uint32_t* clientAshmem = static_cast<uint32_t*>(mmap(NULL, clientAshmemSize,
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PROT_READ | PROT_WRITE, MAP_SHARED, clientChannel->getAshmemFd(), 0));
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ASSERT_TRUE(serverAshmem != NULL)
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<< "server channel ashmem should be mappable";
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ASSERT_TRUE(clientAshmem != NULL)
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<< "client channel ashmem should be mappable";
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*serverAshmem = 0xf00dd00d;
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EXPECT_EQ(0xf00dd00d, *clientAshmem)
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<< "ashmem buffer should be shared by client and server";
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munmap(serverAshmem, serverAshmemSize);
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munmap(clientAshmem, clientAshmemSize);
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// Server->Client communication
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EXPECT_EQ(OK, serverChannel->sendSignal('S'))
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<< "server channel should be able to send signal to client channel";
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char signal;
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EXPECT_EQ(OK, clientChannel->receiveSignal(& signal))
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<< "client channel should be able to receive signal from server channel";
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EXPECT_EQ('S', signal)
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<< "client channel should receive the correct signal from server channel";
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// Client->Server communication
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EXPECT_EQ(OK, clientChannel->sendSignal('c'))
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<< "client channel should be able to send signal to server channel";
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EXPECT_EQ(OK, serverChannel->receiveSignal(& signal))
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<< "server channel should be able to receive signal from client channel";
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EXPECT_EQ('c', signal)
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<< "server channel should receive the correct signal from client channel";
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}
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TEST_F(InputChannelTest, ReceiveSignal_WhenNoSignalPresent_ReturnsAnError) {
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sp<InputChannel> serverChannel, clientChannel;
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status_t result = InputChannel::openInputChannelPair(String8("channel name"),
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serverChannel, clientChannel);
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ASSERT_EQ(OK, result)
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<< "should have successfully opened a channel pair";
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char signal;
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EXPECT_EQ(WOULD_BLOCK, clientChannel->receiveSignal(& signal))
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<< "receiveSignal should have returned WOULD_BLOCK";
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}
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TEST_F(InputChannelTest, ReceiveSignal_WhenPeerClosed_ReturnsAnError) {
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sp<InputChannel> serverChannel, clientChannel;
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status_t result = InputChannel::openInputChannelPair(String8("channel name"),
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serverChannel, clientChannel);
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ASSERT_EQ(OK, result)
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<< "should have successfully opened a channel pair";
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serverChannel.clear(); // close server channel
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char signal;
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EXPECT_EQ(DEAD_OBJECT, clientChannel->receiveSignal(& signal))
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<< "receiveSignal should have returned DEAD_OBJECT";
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}
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TEST_F(InputChannelTest, SendSignal_WhenPeerClosed_ReturnsAnError) {
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sp<InputChannel> serverChannel, clientChannel;
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status_t result = InputChannel::openInputChannelPair(String8("channel name"),
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serverChannel, clientChannel);
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ASSERT_EQ(OK, result)
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<< "should have successfully opened a channel pair";
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serverChannel.clear(); // close server channel
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EXPECT_EQ(DEAD_OBJECT, clientChannel->sendSignal('S'))
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<< "sendSignal should have returned DEAD_OBJECT";
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}
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} // namespace android
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