blob: c98c80c6c67af6e7398fc6e6a827a36d1d49abe0 [file] [log] [blame]
// Copyright (c) 2012 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 <gtest/gtest.h>
#include <string>
#include <sys/wait.h>
#include "base/bind.h"
#include "base/memory/scoped_ptr.h"
#include "base/message_loop.h"
#include "base/posix/eintr_wrapper.h"
#include "base/process_util.h"
#include "base/synchronization/waitable_event.h"
#include "base/threading/thread.h"
#include "chromeos/process_proxy/process_proxy_registry.h"
namespace chromeos {
namespace {
// The test line must have all distinct characters.
const char kTestLineToSend[] = "abcdefgh\n";
const char kTestLineExpected[] = "abcdefgh\r\n";
const char kCatCommand[] = "cat";
const char kStdoutType[] = "stdout";
const int kTestLineNum = 100;
class TestRunner {
public:
virtual ~TestRunner() {}
virtual void SetupExpectations(pid_t pid) = 0;
virtual void OnSomeRead(pid_t pid, const std::string& type,
const std::string& output) = 0;
virtual void StartRegistryTest(ProcessProxyRegistry* registry) = 0;
protected:
pid_t pid_;
};
class RegistryTestRunner : public TestRunner {
public:
virtual ~RegistryTestRunner() {}
virtual void SetupExpectations(pid_t pid) OVERRIDE {
pid_ = pid;
left_to_check_index_[0] = 0;
left_to_check_index_[1] = 0;
// We consider that a line processing has started if a value in
// left_to_check__[index] is set to 0, thus -2.
lines_left_ = 2 * kTestLineNum - 2;
expected_line_ = kTestLineExpected;
}
// Method to test validity of received input. We will receive two streams of
// the same data. (input will be echoed twice by the testing process). Each
// stream will contain the same string repeated |kTestLineNum| times. So we
// have to match 2 * |kTestLineNum| lines. The problem is the received lines
// from different streams may be interleaved (e.g. we may receive
// abc|abcdef|defgh|gh). To deal with that, we allow to test received text
// against two lines. The lines MUST NOT have two same characters for this
// algorithm to work.
virtual void OnSomeRead(pid_t pid, const std::string& type,
const std::string& output) OVERRIDE {
EXPECT_EQ(type, kStdoutType);
EXPECT_EQ(pid_, pid);
bool valid = true;
for (size_t i = 0; i < output.length(); i++) {
// The character output[i] should be next in at least one of the lines we
// are testing.
valid = (ProcessReceivedCharacter(output[i], 0) ||
ProcessReceivedCharacter(output[i], 1));
EXPECT_TRUE(valid) << "Received: " << output;
}
if (!valid || TestSucceeded()) {
base::MessageLoop::current()->PostTask(FROM_HERE,
base::MessageLoop::QuitClosure());
}
}
virtual void StartRegistryTest(ProcessProxyRegistry* registry) OVERRIDE {
for (int i = 0; i < kTestLineNum; i++) {
EXPECT_TRUE(registry->SendInput(pid_, kTestLineToSend));
}
}
private:
bool ProcessReceivedCharacter(char received, size_t stream) {
if (stream >= arraysize(left_to_check_index_))
return false;
bool success = left_to_check_index_[stream] < expected_line_.length() &&
expected_line_[left_to_check_index_[stream]] == received;
if (success)
left_to_check_index_[stream]++;
if (left_to_check_index_[stream] == expected_line_.length() &&
lines_left_ > 0) {
// Take another line to test for this stream, if there are any lines left.
// If not, this stream is done.
left_to_check_index_[stream] = 0;
lines_left_--;
}
return success;
}
bool TestSucceeded() {
return left_to_check_index_[0] == expected_line_.length() &&
left_to_check_index_[1] == expected_line_.length() &&
lines_left_ == 0;
}
size_t left_to_check_index_[2];
size_t lines_left_;
std::string expected_line_;
};
class RegistryNotifiedOnProcessExitTestRunner : public TestRunner {
public:
virtual ~RegistryNotifiedOnProcessExitTestRunner() {}
virtual void SetupExpectations(pid_t pid) OVERRIDE {
output_received_ = false;
pid_ = pid;
}
virtual void OnSomeRead(pid_t pid, const std::string& type,
const std::string& output) OVERRIDE {
EXPECT_EQ(pid_, pid);
if (!output_received_) {
output_received_ = true;
EXPECT_EQ(type, "stdout");
EXPECT_EQ(output, "p");
base::KillProcess(pid_, 0 , true);
return;
}
EXPECT_EQ("exit", type);
base::MessageLoop::current()->PostTask(FROM_HERE,
base::MessageLoop::QuitClosure());
}
virtual void StartRegistryTest(ProcessProxyRegistry* registry) OVERRIDE {
EXPECT_TRUE(registry->SendInput(pid_, "p"));
}
private:
bool output_received_;
};
class SigIntTestRunner : public TestRunner {
public:
virtual ~SigIntTestRunner() {}
virtual void SetupExpectations(pid_t pid) OVERRIDE {
pid_ = pid;
}
virtual void OnSomeRead(pid_t pid, const std::string& type,
const std::string& output) OVERRIDE {
EXPECT_EQ(pid_, pid);
// We may receive ^C on stdout, but we don't care about that, as long as we
// eventually received exit event.
if (type == "exit") {
base::MessageLoop::current()->PostTask(FROM_HERE,
base::MessageLoop::QuitClosure());
}
}
virtual void StartRegistryTest(ProcessProxyRegistry* registry) OVERRIDE {
// Send SingInt and verify the process exited.
EXPECT_TRUE(registry->SendInput(pid_, "\003"));
}
};
} // namespace
class ProcessProxyTest : public testing::Test {
public:
ProcessProxyTest() {}
virtual ~ProcessProxyTest() {}
protected:
void InitRegistryTest() {
registry_ = ProcessProxyRegistry::Get();
EXPECT_TRUE(registry_->OpenProcess(
kCatCommand, &pid_,
base::Bind(&TestRunner::OnSomeRead,
base::Unretained(test_runner_.get()))));
test_runner_->SetupExpectations(pid_);
test_runner_->StartRegistryTest(registry_);
}
void EndRegistryTest() {
registry_->CloseProcess(pid_);
base::TerminationStatus status = base::GetTerminationStatus(pid_, NULL);
EXPECT_NE(base::TERMINATION_STATUS_STILL_RUNNING, status);
if (status == base::TERMINATION_STATUS_STILL_RUNNING)
base::KillProcess(pid_, 0, true);
base::MessageLoop::current()->PostTask(FROM_HERE,
base::MessageLoop::QuitClosure());
}
void RunTest() {
base::MessageLoop::current()->PostTask(
FROM_HERE,
base::Bind(&ProcessProxyTest::InitRegistryTest,
base::Unretained(this)));
// Wait until all data from output watcher is received (QuitTask will be
// fired on watcher thread).
base::MessageLoop::current()->Run();
base::MessageLoop::current()->PostTask(
FROM_HERE,
base::Bind(&ProcessProxyTest::EndRegistryTest,
base::Unretained(this)));
// Wait until we clean up the process proxy.
base::MessageLoop::current()->Run();
}
scoped_ptr<TestRunner> test_runner_;
private:
ProcessProxyRegistry* registry_;
pid_t pid_;
base::MessageLoop message_loop_;
};
// Test will open new process that will run cat command, and verify data we
// write to process gets echoed back.
TEST_F(ProcessProxyTest, RegistryTest) {
test_runner_.reset(new RegistryTestRunner());
RunTest();
}
// Open new process, then kill it. Verifiy that we detect when the process dies.
TEST_F(ProcessProxyTest, RegistryNotifiedOnProcessExit) {
test_runner_.reset(new RegistryNotifiedOnProcessExitTestRunner());
RunTest();
}
// Test verifies that \003 message send to process is processed as SigInt.
// Timing out on the waterfall: http://crbug.com/115064
TEST_F(ProcessProxyTest, DISABLED_SigInt) {
test_runner_.reset(new SigIntTestRunner());
RunTest();
}
} // namespace chromeos