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// 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 <string>
#include <vector>
#include "base/memory/scoped_ptr.h"
#include "chrome/browser/extensions/api/api_resource_event_notifier.h"
#include "chrome/browser/extensions/api/serial/serial_api.h"
#include "chrome/browser/extensions/api/serial/serial_connection.h"
#include "chrome/browser/extensions/extension_apitest.h"
#include "chrome/browser/extensions/extension_function.h"
#include "chrome/browser/extensions/extension_function_test_utils.h"
#include "chrome/browser/extensions/extension_test_message_listener.h"
#include "chrome/browser/ui/browser.h"
#include "content/public/browser/browser_thread.h"
#include "testing/gmock/include/gmock/gmock.h"
using testing::_;
using testing::Return;
using content::BrowserThread;
namespace {
class SerialApiTest : public PlatformAppApiTest {
public:
SerialApiTest() {}
};
} // namespace
namespace extensions {
class FakeSerialGetPortsFunction : public AsyncExtensionFunction {
public:
virtual bool RunImpl() {
ListValue* ports = new ListValue();
ports->Append(Value::CreateStringValue("/dev/fakeserial"));
ports->Append(Value::CreateStringValue("\\\\COM800\\"));
result_.reset(ports);
SendResponse(true);
return true;
}
protected:
virtual ~FakeSerialGetPortsFunction() {}
};
class FakeEchoSerialConnection : public SerialConnection {
public:
explicit FakeEchoSerialConnection(
const std::string& port,
int bitrate,
APIResourceEventNotifier* event_notifier)
: SerialConnection(port, bitrate, event_notifier),
opened_(true) {
Flush();
opened_ = false;
}
virtual ~FakeEchoSerialConnection() {
}
virtual bool Open() {
DCHECK(!opened_);
opened_ = true;
return true;
}
virtual void Close() {
DCHECK(opened_);
}
virtual void Flush() {
DCHECK(opened_);
read_index_ = write_index_ = 0;
}
virtual int Read(uint8* byte) {
DCHECK(byte);
if (read_index_ >= write_index_) {
return 0;
}
*byte = ring_buffer_[read_index_++];
if (read_index_ == BUFFER_SIZE)
read_index_ = 0;
return 1;
}
virtual int Write(scoped_refptr<net::IOBuffer> io_buffer, int byte_count) {
DCHECK(io_buffer.get());
DCHECK(byte_count >= 0);
char *data = io_buffer->data();
int count = byte_count;
while (count--) {
ring_buffer_[write_index_++] = *data++;
if (write_index_ == BUFFER_SIZE)
write_index_ = 0;
}
return byte_count;
}
MOCK_METHOD1(GetControlSignals, bool(ControlSignals &));
MOCK_METHOD1(SetControlSignals, bool(const ControlSignals &));
private:
enum { BUFFER_SIZE = 256 };
bool opened_;
char ring_buffer_[BUFFER_SIZE];
int read_index_;
int write_index_;
DISALLOW_COPY_AND_ASSIGN(FakeEchoSerialConnection);
};
class FakeSerialOpenFunction : public SerialOpenFunction {
protected:
virtual SerialConnection* CreateSerialConnection(
const std::string& port,
int bitrate,
APIResourceEventNotifier* event_notifier) OVERRIDE {
FakeEchoSerialConnection* serial_connection =
new FakeEchoSerialConnection(port, bitrate, event_notifier);
EXPECT_CALL(*serial_connection, GetControlSignals(_)).
Times(1).WillOnce(Return(true));
EXPECT_CALL(*serial_connection, SetControlSignals(_)).
Times(1).WillOnce(Return(true));
return serial_connection;
}
virtual bool DoesPortExist(const std::string& port) OVERRIDE {
return true;
}
protected:
virtual ~FakeSerialOpenFunction() {}
};
} // namespace extensions
ExtensionFunction* FakeSerialGetPortsFunctionFactory() {
return new extensions::FakeSerialGetPortsFunction();
}
ExtensionFunction* FakeSerialOpenFunctionFactory() {
return new extensions::FakeSerialOpenFunction();
}
// Disable SIMULATE_SERIAL_PORTS only if all the following are true:
//
// 1. You have an Arduino or compatible board attached to your machine and
// properly appearing as the first virtual serial port ("first" is very loosely
// defined as whichever port shows up in serial.getPorts). We've tested only
// the Atmega32u4 Breakout Board and Arduino Leonardo; note that both these
// boards are based on the Atmel ATmega32u4, rather than the more common
// Arduino '328p with either FTDI or '8/16u2 USB interfaces. TODO: test more
// widely.
//
// 2. Your user has permission to read/write the port. For example, this might
// mean that your user is in the "tty" or "uucp" group on Ubuntu flavors of
// Linux, or else that the port's path (e.g., /dev/ttyACM0) has global
// read/write permissions.
//
// 3. You have uploaded a program to the board that does a byte-for-byte echo
// on the virtual serial port at 57600 bps. An example is at
// chrome/test/data/extensions/api_test/serial/api/serial_arduino_test.ino.
//
#define SIMULATE_SERIAL_PORTS (1)
IN_PROC_BROWSER_TEST_F(SerialApiTest, SerialFakeHardware) {
ResultCatcher catcher;
catcher.RestrictToProfile(browser()->profile());
#if SIMULATE_SERIAL_PORTS
ASSERT_TRUE(ExtensionFunctionDispatcher::OverrideFunction(
"experimental.serial.getPorts",
FakeSerialGetPortsFunctionFactory));
ASSERT_TRUE(ExtensionFunctionDispatcher::OverrideFunction(
"experimental.serial.open",
FakeSerialOpenFunctionFactory));
#endif
ASSERT_TRUE(RunExtensionTest("serial/api")) << message_;
}
IN_PROC_BROWSER_TEST_F(SerialApiTest, SerialRealHardware) {
ResultCatcher catcher;
catcher.RestrictToProfile(browser()->profile());
ASSERT_TRUE(RunExtensionTest("serial/real_hardware")) << message_;
}
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