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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ash/printing/usb_printer_detector.h"
#include <utility>
#include <vector>
#include "ash/public/cpp/session/session_controller.h"
#include "ash/public/cpp/session/session_observer.h"
#include "ash/public/cpp/test/mock_session_controller.h"
#include "base/functional/bind.h"
#include "base/memory/raw_ptr.h"
#include "base/run_loop.h"
#include "base/test/task_environment.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "services/device/public/cpp/test/fake_usb_device_info.h"
#include "services/device/public/cpp/test/fake_usb_device_manager.h"
#include "services/device/public/mojom/usb_device.mojom.h"
#include "services/device/public/mojom/usb_manager.mojom.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace ash {
namespace {
constexpr uint8_t kPrinterInterfaceClass = 7;
constexpr uint8_t kPrinterInterfaceSubclass = 1;
constexpr uint8_t kPrinterIppUsbProtocol = 4;
constexpr uint8_t kPrinterUsbProtocol = 0xff;
constexpr uint16_t kUsbVenderId = 0x02ad;
constexpr uint16_t kUsbProductId = 0x138c;
constexpr uint8_t kUsbDeviceClass = 0x09;
scoped_refptr<device::FakeUsbDeviceInfo> CreateFakeUsbPrinter(
bool is_ipp_supported) {
std::vector<device::mojom::UsbConfigurationInfoPtr> configs;
configs.push_back(device::mojom::UsbConfigurationInfo::New());
configs[0]->interfaces.push_back(device::mojom::UsbInterfaceInfo::New());
auto alternate = device::mojom::UsbAlternateInterfaceInfo::New();
alternate->class_code = kPrinterInterfaceClass;
alternate->subclass_code = kPrinterInterfaceSubclass;
alternate->protocol_code =
is_ipp_supported ? kPrinterIppUsbProtocol : kPrinterUsbProtocol;
configs[0]->interfaces[0]->alternates.push_back(std::move(alternate));
return base::MakeRefCounted<device::FakeUsbDeviceInfo>(
kUsbVenderId, kUsbProductId, kUsbDeviceClass, std::move(configs));
}
class UsbPrinterDetectorTest : public testing::Test {
protected:
class FakePrinterDetectorClient {
public:
FakePrinterDetectorClient() = default;
void WaitForPrinters() {
base::RunLoop run_loop;
done_callback_ = run_loop.QuitClosure();
run_loop.Run();
}
void OnPrintersFound(
const std::vector<PrinterDetector::DetectedPrinter>& printers) {
if (done_callback_)
std::move(done_callback_).Run();
}
private:
base::OnceClosure done_callback_;
};
UsbPrinterDetectorTest() {
ON_CALL(this->session_controller_, IsScreenLocked).WillByDefault([this]() {
return this->screen_locked_;
});
ON_CALL(this->session_controller_, AddObserver)
.WillByDefault([this](ash::SessionObserver* observer) {
this->observer_ = observer;
});
ON_CALL(this->session_controller_, RemoveObserver)
.WillByDefault([this](ash::SessionObserver* observer) {
this->observer_ = nullptr;
});
mojo::PendingRemote<device::mojom::UsbDeviceManager> manager;
usb_manager_.AddReceiver(manager.InitWithNewPipeAndPassReceiver());
detector_ = UsbPrinterDetector::CreateForTesting(std::move(manager),
&session_controller_);
detector_->RegisterPrintersFoundCallback(
base::BindRepeating(&FakePrinterDetectorClient::OnPrintersFound,
base::Unretained(&detector_client_)));
fake_non_printer_ = base::MakeRefCounted<device::FakeUsbDeviceInfo>(
kUsbVenderId, kUsbProductId);
fake_printer_ = CreateFakeUsbPrinter(false);
fake_printer_ipp_ = CreateFakeUsbPrinter(true);
base::RunLoop().RunUntilIdle();
}
base::test::TaskEnvironment task_environment_;
bool screen_locked_ = false;
raw_ptr<ash::SessionObserver> observer_ = nullptr;
testing::NiceMock<ash::MockSessionController> session_controller_;
std::unique_ptr<UsbPrinterDetector> detector_;
FakePrinterDetectorClient detector_client_;
device::FakeUsbDeviceManager usb_manager_;
scoped_refptr<device::FakeUsbDeviceInfo> fake_non_printer_;
scoped_refptr<device::FakeUsbDeviceInfo> fake_printer_;
scoped_refptr<device::FakeUsbDeviceInfo> fake_printer_ipp_;
};
// Test GetPrinters().
TEST_F(UsbPrinterDetectorTest, GetPrinters) {
EXPECT_EQ(0u, detector_->GetPrinters().size());
usb_manager_.AddDevice(fake_non_printer_);
usb_manager_.AddDevice(fake_printer_);
usb_manager_.AddDevice(fake_printer_ipp_);
detector_client_.WaitForPrinters();
EXPECT_EQ(1u, detector_->GetPrinters().size());
detector_client_.WaitForPrinters();
EXPECT_EQ(2u, detector_->GetPrinters().size());
}
// Test OnPrintersFound callback on deviceAdded/Removed.
TEST_F(UsbPrinterDetectorTest, OnPrintersFoundCallback) {
EXPECT_EQ(0u, detector_->GetPrinters().size());
usb_manager_.AddDevice(fake_non_printer_);
usb_manager_.AddDevice(fake_printer_);
usb_manager_.AddDevice(fake_printer_ipp_);
detector_client_.WaitForPrinters();
EXPECT_EQ(1u, detector_->GetPrinters().size());
detector_client_.WaitForPrinters();
EXPECT_EQ(2u, detector_->GetPrinters().size());
usb_manager_.RemoveDevice(fake_non_printer_);
usb_manager_.RemoveDevice(fake_printer_);
usb_manager_.RemoveDevice(fake_printer_ipp_);
detector_client_.WaitForPrinters();
EXPECT_EQ(1u, detector_->GetPrinters().size());
detector_client_.WaitForPrinters();
EXPECT_EQ(0u, detector_->GetPrinters().size());
}
// New printers are not announced as long as the screen is locked.
TEST_F(UsbPrinterDetectorTest, NewPrintersHoldWhenTheScreenIsLocked) {
screen_locked_ = true;
usb_manager_.AddDevice(fake_printer_);
usb_manager_.AddDevice(fake_printer_ipp_);
base::RunLoop().RunUntilIdle();
EXPECT_EQ(0u, detector_->GetPrinters().size());
ASSERT_NE(observer_, nullptr);
observer_->OnLockStateChanged(screen_locked_);
base::RunLoop().RunUntilIdle();
EXPECT_EQ(0u, detector_->GetPrinters().size());
screen_locked_ = false;
observer_->OnLockStateChanged(screen_locked_);
base::RunLoop().RunUntilIdle();
EXPECT_EQ(2u, detector_->GetPrinters().size());
}
} // namespace
} // namespace ash
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