Index: mojo/public/cpp/system/tests/wait_unittest.cc |
diff --git a/mojo/public/cpp/system/tests/wait_unittest.cc b/mojo/public/cpp/system/tests/wait_unittest.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..1d9d3c69bcd725e85f7c71340537bb938b9aa3f8 |
--- /dev/null |
+++ b/mojo/public/cpp/system/tests/wait_unittest.cc |
@@ -0,0 +1,321 @@ |
+// Copyright 2017 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#include "mojo/public/cpp/system/wait.h" |
+ |
+#include <string> |
+#include <vector> |
+ |
+#include "base/bind.h" |
+#include "base/callback.h" |
+#include "base/strings/string_piece.h" |
+#include "base/threading/platform_thread.h" |
+#include "base/threading/simple_thread.h" |
+#include "base/time/time.h" |
+#include "mojo/public/c/system/types.h" |
+#include "mojo/public/cpp/system/handle_signals_state.h" |
+#include "mojo/public/cpp/system/message_pipe.h" |
+#include "testing/gtest/include/gtest/gtest.h" |
+ |
+namespace mojo { |
+namespace { |
+ |
+using WaitTest = testing::Test; |
+using WaitManyTest = testing::Test; |
+ |
+void WriteMessage(const ScopedMessagePipeHandle& handle, |
+ const base::StringPiece& message) { |
+ MojoResult rv = WriteMessageRaw(handle.get(), message.data(), |
+ static_cast<uint32_t>(message.size()), |
+ nullptr, 0, MOJO_WRITE_MESSAGE_FLAG_NONE); |
+ CHECK_EQ(MOJO_RESULT_OK, rv); |
+} |
+ |
+std::string ReadMessage(const ScopedMessagePipeHandle& handle) { |
+ uint32_t num_bytes = 0; |
+ uint32_t num_handles = 0; |
+ MojoResult rv = ReadMessageRaw(handle.get(), nullptr, &num_bytes, nullptr, |
+ &num_handles, MOJO_READ_MESSAGE_FLAG_NONE); |
+ CHECK_EQ(MOJO_RESULT_RESOURCE_EXHAUSTED, rv); |
+ CHECK_EQ(0u, num_handles); |
+ |
+ std::vector<char> buffer(num_bytes); |
+ rv = ReadMessageRaw(handle.get(), buffer.data(), &num_bytes, nullptr, |
+ &num_handles, MOJO_READ_MESSAGE_FLAG_NONE); |
+ CHECK_EQ(MOJO_RESULT_OK, rv); |
+ return std::string(buffer.data(), buffer.size()); |
+} |
+ |
+class ThreadedRunner : public base::SimpleThread { |
+ public: |
+ explicit ThreadedRunner(const base::Closure& callback) |
+ : SimpleThread("ThreadedRunner"), callback_(callback) {} |
+ ~ThreadedRunner() override { Join(); } |
+ |
+ void Run() override { callback_.Run(); } |
+ |
+ private: |
+ const base::Closure callback_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(ThreadedRunner); |
+}; |
+ |
+TEST_F(WaitTest, InvalidArguments) { |
+ Handle invalid_handle; |
+ |
+ EXPECT_EQ(MOJO_RESULT_INVALID_ARGUMENT, |
+ Wait(invalid_handle, MOJO_HANDLE_SIGNAL_READABLE)); |
+ |
+ MessagePipe p; |
+ Handle valid_handles[2] = {p.handle0.get(), p.handle1.get()}; |
+ Handle invalid_handles[2]; |
+ MojoHandleSignals signals[2] = {MOJO_HANDLE_SIGNAL_NONE, |
+ MOJO_HANDLE_SIGNAL_NONE}; |
+ size_t result_index = 0; |
+ EXPECT_EQ(MOJO_RESULT_INVALID_ARGUMENT, |
+ WaitMany(invalid_handles, signals, 2, &result_index)); |
+ EXPECT_EQ(MOJO_RESULT_INVALID_ARGUMENT, |
+ WaitMany(nullptr, signals, 2, &result_index)); |
+ EXPECT_EQ(MOJO_RESULT_INVALID_ARGUMENT, |
+ WaitMany(valid_handles, nullptr, 2, &result_index)); |
+} |
+ |
+TEST_F(WaitTest, Basic) { |
+ MessagePipe p; |
+ |
+ // Write to one end of the pipe and wait on the other. |
+ const char kTestMessage1[] = "how about a nice game of chess?"; |
+ WriteMessage(p.handle0, kTestMessage1); |
+ EXPECT_EQ(MOJO_RESULT_OK, Wait(p.handle1.get(), MOJO_HANDLE_SIGNAL_READABLE)); |
+ |
+ // And make sure we can also grab the handle signals state (with both the C |
+ // and C++ library structs.) |
+ |
+ MojoHandleSignalsState c_hss = {0, 0}; |
+ EXPECT_EQ(MOJO_RESULT_OK, |
+ Wait(p.handle1.get(), MOJO_HANDLE_SIGNAL_READABLE, &c_hss)); |
+ EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_WRITABLE, |
+ c_hss.satisfied_signals); |
+ EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_WRITABLE | |
+ MOJO_HANDLE_SIGNAL_PEER_CLOSED, |
+ c_hss.satisfiable_signals); |
+ |
+ HandleSignalsState hss; |
+ EXPECT_EQ(MOJO_RESULT_OK, |
+ Wait(p.handle1.get(), MOJO_HANDLE_SIGNAL_READABLE, &hss)); |
+ EXPECT_TRUE(hss.readable() && hss.writable() && !hss.peer_closed()); |
+ EXPECT_FALSE(hss.never_readable() || hss.never_writable() || |
+ hss.never_peer_closed()); |
+ |
+ // Now close the writing end and wait for peer closure. |
+ |
+ p.handle0.reset(); |
+ EXPECT_EQ(MOJO_RESULT_OK, |
+ Wait(p.handle1.get(), MOJO_HANDLE_SIGNAL_PEER_CLOSED, &hss)); |
+ |
+ // Still readable as there's still a message queued. No longer writable as |
+ // peer closure has been detected. |
+ EXPECT_TRUE(hss.readable() && hss.peer_closed() && !hss.writable()); |
+ EXPECT_TRUE(hss.never_writable() && !hss.never_readable() && |
+ !hss.never_peer_closed()); |
+ |
+ // Read the message and wait for readable again. Waiting should fail since |
+ // there are no more messages and the peer is closed. |
+ EXPECT_EQ(kTestMessage1, ReadMessage(p.handle1)); |
+ EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION, |
+ Wait(p.handle1.get(), MOJO_HANDLE_SIGNAL_READABLE, &hss)); |
+ |
+ // Sanity check the signals state again. |
+ EXPECT_TRUE(hss.peer_closed() && !hss.readable() && !hss.writable()); |
+ EXPECT_TRUE(hss.never_readable() && hss.never_writable() && |
+ !hss.never_peer_closed()); |
+} |
+ |
+TEST_F(WaitTest, DelayedWrite) { |
+ MessagePipe p; |
+ |
+ ThreadedRunner write_after_delay(base::Bind( |
+ [](ScopedMessagePipeHandle* handle) { |
+ // Wait a little while, then write a message. |
+ base::PlatformThread::Sleep(base::TimeDelta::FromMilliseconds(200)); |
+ WriteMessage(*handle, "wakey wakey"); |
+ }, |
+ &p.handle0)); |
+ write_after_delay.Start(); |
+ |
+ HandleSignalsState hss; |
+ EXPECT_EQ(MOJO_RESULT_OK, |
+ Wait(p.handle1.get(), MOJO_HANDLE_SIGNAL_READABLE, &hss)); |
+ EXPECT_TRUE(hss.readable() && hss.writable() && !hss.peer_closed()); |
+ EXPECT_TRUE(!hss.never_readable() && !hss.never_writable() && |
+ !hss.never_peer_closed()); |
+} |
+ |
+TEST_F(WaitTest, DelayedPeerClosure) { |
+ MessagePipe p; |
+ |
+ ThreadedRunner close_after_delay(base::Bind( |
+ [](ScopedMessagePipeHandle* handle) { |
+ // Wait a little while, then close the handle. |
+ base::PlatformThread::Sleep(base::TimeDelta::FromMilliseconds(200)); |
+ handle->reset(); |
+ }, |
+ &p.handle0)); |
+ close_after_delay.Start(); |
+ |
+ HandleSignalsState hss; |
+ EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION, |
+ Wait(p.handle1.get(), MOJO_HANDLE_SIGNAL_READABLE, &hss)); |
+ EXPECT_TRUE(!hss.readable() && !hss.writable() && hss.peer_closed()); |
+ EXPECT_TRUE(hss.never_readable() && hss.never_writable() && |
+ !hss.never_peer_closed()); |
+} |
+ |
+TEST_F(WaitTest, CloseWhileWaiting) { |
+ MessagePipe p; |
+ ThreadedRunner close_after_delay(base::Bind( |
+ [](ScopedMessagePipeHandle* handle) { |
+ base::PlatformThread::Sleep(base::TimeDelta::FromMilliseconds(200)); |
+ handle->reset(); |
+ }, |
+ &p.handle0)); |
+ close_after_delay.Start(); |
+ EXPECT_EQ(MOJO_RESULT_CANCELLED, |
+ Wait(p.handle0.get(), MOJO_HANDLE_SIGNAL_READABLE)); |
+} |
+ |
+TEST_F(WaitManyTest, Basic) { |
+ MessagePipe p; |
+ |
+ const char kTestMessage1[] = "hello"; |
+ WriteMessage(p.handle0, kTestMessage1); |
+ |
+ // Wait for either handle to become readable. Wait twice, just to verify that |
+ // we can use either the C or C++ signaling state structure for the last |
+ // argument. |
+ |
+ Handle handles[2] = {p.handle0.get(), p.handle1.get()}; |
+ MojoHandleSignals signals[2] = {MOJO_HANDLE_SIGNAL_READABLE, |
+ MOJO_HANDLE_SIGNAL_READABLE}; |
+ size_t result_index = 0; |
+ MojoHandleSignalsState c_hss[2]; |
+ HandleSignalsState hss[2]; |
+ |
+ EXPECT_EQ(MOJO_RESULT_OK, |
+ WaitMany(handles, signals, 2, &result_index, c_hss)); |
+ EXPECT_EQ(1u, result_index); |
+ EXPECT_EQ(MOJO_HANDLE_SIGNAL_WRITABLE, c_hss[0].satisfied_signals); |
+ EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_WRITABLE | |
+ MOJO_HANDLE_SIGNAL_PEER_CLOSED, |
+ c_hss[0].satisfiable_signals); |
+ EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_WRITABLE, |
+ c_hss[1].satisfied_signals); |
+ EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_WRITABLE | |
+ MOJO_HANDLE_SIGNAL_PEER_CLOSED, |
+ c_hss[1].satisfiable_signals); |
+ |
+ EXPECT_EQ(MOJO_RESULT_OK, WaitMany(handles, signals, 2, &result_index, hss)); |
+ EXPECT_EQ(1u, result_index); |
+ EXPECT_TRUE(!hss[0].readable() && hss[0].writable() && !hss[0].peer_closed()); |
+ EXPECT_TRUE(!hss[0].never_readable() && !hss[0].never_writable() && |
+ !hss[0].never_peer_closed()); |
+ EXPECT_TRUE(hss[1].readable() && hss[1].writable() && !hss[1].peer_closed()); |
+ EXPECT_TRUE(!hss[1].never_readable() && !hss[1].never_writable() && |
+ !hss[1].never_peer_closed()); |
+ |
+ // Close the writer and read the message. Try to wait again, and it should |
+ // fail due to the conditions being unsatisfiable. |
+ |
+ EXPECT_EQ(kTestMessage1, ReadMessage(p.handle1)); |
+ p.handle0.reset(); |
+ |
+ // handles[0] is invalid. |
+ EXPECT_EQ(MOJO_RESULT_INVALID_ARGUMENT, |
+ WaitMany(handles, signals, 2, &result_index, hss)); |
+ handles[0] = handles[1]; |
+ EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION, |
+ WaitMany(handles, signals, 1, &result_index, hss)); |
+ EXPECT_EQ(0u, result_index); |
+ EXPECT_TRUE(!hss[0].readable() && !hss[0].writable() && hss[0].peer_closed()); |
+ EXPECT_TRUE(hss[0].never_readable() && hss[0].never_writable() && |
+ !hss[0].never_peer_closed()); |
+} |
+ |
+TEST_F(WaitManyTest, CloseWhileWaiting) { |
+ MessagePipe p, q; |
+ |
+ Handle handles[3] = {q.handle0.get(), q.handle1.get(), p.handle1.get()}; |
+ MojoHandleSignals signals[3] = {MOJO_HANDLE_SIGNAL_READABLE, |
+ MOJO_HANDLE_SIGNAL_READABLE, |
+ MOJO_HANDLE_SIGNAL_READABLE}; |
+ |
+ ThreadedRunner close_after_delay(base::Bind( |
+ [](ScopedMessagePipeHandle* handle) { |
+ base::PlatformThread::Sleep(base::TimeDelta::FromMilliseconds(200)); |
+ handle->reset(); |
+ }, |
+ &p.handle1)); |
+ close_after_delay.Start(); |
+ |
+ size_t result_index = 0; |
+ EXPECT_EQ(MOJO_RESULT_CANCELLED, |
+ WaitMany(handles, signals, 3, &result_index)); |
+ EXPECT_EQ(2u, result_index); |
+} |
+ |
+TEST_F(WaitManyTest, DelayedWrite) { |
+ MessagePipe p; |
+ |
+ ThreadedRunner write_after_delay(base::Bind( |
+ [](ScopedMessagePipeHandle* handle) { |
+ // Wait a little while, then write a message. |
+ base::PlatformThread::Sleep(base::TimeDelta::FromMilliseconds(200)); |
+ WriteMessage(*handle, "wakey wakey"); |
+ }, |
+ &p.handle0)); |
+ write_after_delay.Start(); |
+ |
+ Handle handles[2] = {p.handle0.get(), p.handle1.get()}; |
+ MojoHandleSignals signals[2] = {MOJO_HANDLE_SIGNAL_READABLE, |
+ MOJO_HANDLE_SIGNAL_READABLE}; |
+ size_t result_index = 0; |
+ HandleSignalsState hss[2]; |
+ EXPECT_EQ(MOJO_RESULT_OK, WaitMany(handles, signals, 2, &result_index, hss)); |
+ EXPECT_EQ(1u, result_index); |
+ EXPECT_TRUE(!hss[0].readable() && hss[0].writable() && !hss[0].peer_closed()); |
+ EXPECT_TRUE(!hss[0].never_readable() && !hss[0].never_writable() && |
+ !hss[0].never_peer_closed()); |
+ EXPECT_TRUE(hss[1].readable() && hss[1].writable() && !hss[1].peer_closed()); |
+ EXPECT_TRUE(!hss[1].never_readable() && !hss[1].never_writable() && |
+ !hss[1].never_peer_closed()); |
+} |
+ |
+TEST_F(WaitManyTest, DelayedPeerClosure) { |
+ MessagePipe p, q; |
+ |
+ ThreadedRunner close_after_delay(base::Bind( |
+ [](ScopedMessagePipeHandle* handle) { |
+ // Wait a little while, then close the handle. |
+ base::PlatformThread::Sleep(base::TimeDelta::FromMilliseconds(200)); |
+ handle->reset(); |
+ }, |
+ &p.handle0)); |
+ close_after_delay.Start(); |
+ |
+ Handle handles[3] = {q.handle0.get(), q.handle1.get(), p.handle1.get()}; |
+ MojoHandleSignals signals[3] = {MOJO_HANDLE_SIGNAL_READABLE, |
+ MOJO_HANDLE_SIGNAL_READABLE, |
+ MOJO_HANDLE_SIGNAL_READABLE}; |
+ size_t result_index = 0; |
+ HandleSignalsState hss[3]; |
+ EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION, |
+ WaitMany(handles, signals, 3, &result_index, hss)); |
+ EXPECT_EQ(2u, result_index); |
+ EXPECT_TRUE(!hss[2].readable() && !hss[2].writable() && hss[2].peer_closed()); |
+ EXPECT_TRUE(hss[2].never_readable() && hss[2].never_writable() && |
+ !hss[2].never_peer_closed()); |
+} |
+ |
+} // namespace |
+} // namespace mojo |