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device_tracker_test.cc
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// Copyright 2023 The ChromiumOS Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "lorgnette/device_tracker.h"
#include <cstdint>
#include <memory>
#include <set>
#include <string>
#include <utility>
#include <vector>
#include <gmock/gmock.h>
#include <gtest/gtest.h>
#include <base/run_loop.h>
#include <base/files/file.h>
#include <base/files/scoped_file.h>
#include <base/files/scoped_temp_dir.h>
#include <base/test/bind.h>
#include <base/test/task_environment.h>
#include "lorgnette/firewall_manager.h"
#include "lorgnette/sane_client_fake.h"
#include "lorgnette/test_util.h"
#include "lorgnette/usb/libusb_wrapper_fake.h"
#include "lorgnette/usb/usb_device_fake.h"
using ::testing::_;
using ::testing::Each;
using ::testing::ElementsAre;
using ::testing::HasSubstr;
using ::testing::Not;
using ::testing::Pointee;
using ::testing::Property;
using ::testing::UnorderedElementsAre;
namespace lorgnette {
namespace {
ScanParameters MakeScanParameters(int width, int height) {
return {
.format = FrameFormat::kRGB,
.bytes_per_line = 3 * width,
.pixels_per_line = width,
.lines = height,
.depth = 8,
};
}
class MockFirewallManager : public FirewallManager {
public:
explicit MockFirewallManager(const std::string& interface)
: FirewallManager(interface) {}
MOCK_METHOD(PortToken, RequestUdpPortAccess, (uint16_t), (override));
};
TEST(DeviceTrackerTest, CreateMultipleSessions) {
base::test::SingleThreadTaskEnvironment task_environment;
base::RunLoop run_loop;
std::vector<std::string> closed_sessions;
auto signal_handler = base::BindLambdaForTesting(
[&closed_sessions](const ScannerListChangedSignal& signal) {
if (signal.event_type() == ScannerListChangedSignal::SESSION_ENDING) {
closed_sessions.push_back(signal.session_id());
}
});
auto sane_client = std::make_unique<SaneClientFake>();
auto libusb = std::make_unique<LibusbWrapperFake>();
auto tracker =
std::make_unique<DeviceTracker>(sane_client.get(), libusb.get());
tracker->SetScannerListChangedSignalSender(signal_handler);
EXPECT_EQ(tracker->NumActiveDiscoverySessions(), 0);
StartScannerDiscoveryRequest start_request;
start_request.set_client_id("client_1");
StartScannerDiscoveryResponse response1 =
tracker->StartScannerDiscovery(start_request);
EXPECT_TRUE(response1.started());
EXPECT_FALSE(response1.session_id().empty());
EXPECT_EQ(tracker->NumActiveDiscoverySessions(), 1);
start_request.set_client_id("client_2");
StartScannerDiscoveryResponse response2 =
tracker->StartScannerDiscovery(start_request);
EXPECT_TRUE(response2.started());
EXPECT_FALSE(response2.session_id().empty());
EXPECT_NE(response1.session_id(), response2.session_id());
EXPECT_EQ(tracker->NumActiveDiscoverySessions(), 2);
StopScannerDiscoveryRequest stop_request;
stop_request.set_session_id(response1.session_id());
StopScannerDiscoveryResponse stop1 =
tracker->StopScannerDiscovery(stop_request);
EXPECT_TRUE(stop1.stopped());
EXPECT_EQ(tracker->NumActiveDiscoverySessions(), 1);
stop_request.set_session_id(response2.session_id());
StopScannerDiscoveryResponse stop2 =
tracker->StopScannerDiscovery(stop_request);
EXPECT_TRUE(stop2.stopped());
EXPECT_EQ(tracker->NumActiveDiscoverySessions(), 0);
EXPECT_THAT(closed_sessions,
ElementsAre(response1.session_id(), response2.session_id()));
}
TEST(DeviceTrackerTest, CreateDuplicateSessions) {
base::test::SingleThreadTaskEnvironment task_environment;
base::RunLoop run_loop;
std::vector<std::string> closed_sessions;
auto signal_handler = base::BindLambdaForTesting(
[&closed_sessions](const ScannerListChangedSignal& signal) {
if (signal.event_type() == ScannerListChangedSignal::SESSION_ENDING) {
closed_sessions.push_back(signal.session_id());
}
});
auto sane_client = std::make_unique<SaneClientFake>();
auto libusb = std::make_unique<LibusbWrapperFake>();
auto tracker =
std::make_unique<DeviceTracker>(sane_client.get(), libusb.get());
tracker->SetScannerListChangedSignalSender(signal_handler);
EXPECT_EQ(tracker->NumActiveDiscoverySessions(), 0);
StartScannerDiscoveryRequest start_request;
start_request.set_client_id("client_1");
StartScannerDiscoveryResponse response1 =
tracker->StartScannerDiscovery(start_request);
EXPECT_TRUE(response1.started());
EXPECT_FALSE(response1.session_id().empty());
EXPECT_EQ(tracker->NumActiveDiscoverySessions(), 1);
start_request.set_client_id("client_1");
StartScannerDiscoveryResponse response2 =
tracker->StartScannerDiscovery(start_request);
EXPECT_TRUE(response2.started());
EXPECT_FALSE(response2.session_id().empty());
EXPECT_EQ(response1.session_id(), response2.session_id());
EXPECT_EQ(tracker->NumActiveDiscoverySessions(), 1);
StopScannerDiscoveryRequest stop_request;
stop_request.set_session_id(response1.session_id());
StopScannerDiscoveryResponse stop1 =
tracker->StopScannerDiscovery(stop_request);
EXPECT_TRUE(stop1.stopped());
EXPECT_EQ(tracker->NumActiveDiscoverySessions(), 0);
stop_request.set_session_id(response2.session_id());
StopScannerDiscoveryResponse stop2 =
tracker->StopScannerDiscovery(stop_request);
EXPECT_TRUE(stop2.stopped());
EXPECT_EQ(tracker->NumActiveDiscoverySessions(), 0);
// Session ID should get closed twice even though it doesn't exist the second
// time.
EXPECT_THAT(closed_sessions,
ElementsAre(response1.session_id(), response1.session_id()));
}
TEST(DeviceTrackerTest, StartSessionMissingClient) {
base::test::SingleThreadTaskEnvironment task_environment;
base::RunLoop run_loop;
auto sane_client = std::make_unique<SaneClientFake>();
auto libusb = std::make_unique<LibusbWrapperFake>();
auto tracker =
std::make_unique<DeviceTracker>(sane_client.get(), libusb.get());
StartScannerDiscoveryRequest start_request;
start_request.set_client_id("");
StartScannerDiscoveryResponse response =
tracker->StartScannerDiscovery(start_request);
EXPECT_FALSE(response.started());
EXPECT_TRUE(response.session_id().empty());
EXPECT_EQ(tracker->NumActiveDiscoverySessions(), 0);
}
TEST(DeviceTrackerTest, StopSessionMissingID) {
base::test::SingleThreadTaskEnvironment task_environment;
base::RunLoop run_loop;
std::vector<std::string> closed_sessions;
auto signal_handler = base::BindLambdaForTesting(
[&closed_sessions](const ScannerListChangedSignal& signal) {
if (signal.event_type() == ScannerListChangedSignal::SESSION_ENDING) {
closed_sessions.push_back(signal.session_id());
}
});
auto sane_client = std::make_unique<SaneClientFake>();
auto libusb = std::make_unique<LibusbWrapperFake>();
auto tracker =
std::make_unique<DeviceTracker>(sane_client.get(), libusb.get());
tracker->SetScannerListChangedSignalSender(signal_handler);
StopScannerDiscoveryRequest stop_request;
stop_request.set_session_id("");
StopScannerDiscoveryResponse response =
tracker->StopScannerDiscovery(stop_request);
EXPECT_FALSE(response.stopped());
EXPECT_TRUE(closed_sessions.empty());
EXPECT_EQ(tracker->NumActiveDiscoverySessions(), 0);
}
// Test the whole flow with several fake USB devices. Confirm that
// exactly and only the devices that fully match the checks and have a SANE
// backend have a signal emitted before shutting down the session.
TEST(DeviceTrackerTest, CompleteDiscoverySession) {
// Scanner that supports eSCL over IPP-USB.
auto ippusb_escl_device = std::make_unique<UsbDeviceFake>();
libusb_device_descriptor device_desc = MakeMinimalDeviceDescriptor();
device_desc.bDeviceClass = LIBUSB_CLASS_PER_INTERFACE;
device_desc.bNumConfigurations = 1;
device_desc.iManufacturer = 1;
device_desc.iProduct = 2;
ippusb_escl_device->SetStringDescriptors(
{"", "GoogleTest", "eSCL Scanner 3000"});
ippusb_escl_device->SetDeviceDescriptor(device_desc);
// One altsetting with a printer class and the IPP-USB protocol.
auto altsetting = MakeIppUsbInterfaceDescriptor();
// One interface containing the altsetting.
auto interface = std::make_unique<libusb_interface>();
interface->num_altsetting = 1;
interface->altsetting = altsetting.get();
// One config descriptor containing the interface.
libusb_config_descriptor descriptor;
memset(&descriptor, 0, sizeof(descriptor));
descriptor.bLength = sizeof(descriptor);
descriptor.bDescriptorType = LIBUSB_DT_CONFIG;
descriptor.wTotalLength = sizeof(descriptor);
descriptor.bNumInterfaces = 1;
descriptor.interface = interface.get();
ippusb_escl_device->SetConfigDescriptors({descriptor});
ippusb_escl_device->SetBusNumber(1);
ippusb_escl_device->SetDeviceAddress(1);
ippusb_escl_device->Init();
// Printer that supports IPP-USB but not eSCL.
auto ippusb_printer = UsbDeviceFake::Clone(*ippusb_escl_device.get());
ippusb_printer->MutableDeviceDescriptor().idProduct = 0x6543;
ippusb_printer->SetStringDescriptors(
{"", "GoogleTest", "IPP-USB Printer 2000"});
// Printer that doesn't support IPP-USB.
auto printer_altsetting = MakeIppUsbInterfaceDescriptor();
printer_altsetting->bInterfaceProtocol = 0;
auto printer_interface = std::make_unique<libusb_interface>();
printer_interface->num_altsetting = 1;
printer_interface->altsetting = printer_altsetting.get();
auto usb_printer = UsbDeviceFake::Clone(*ippusb_printer.get());
usb_printer->MutableDeviceDescriptor().idProduct = 0x7654;
usb_printer->MutableConfigDescriptor(0).interface = printer_interface.get();
usb_printer->SetStringDescriptors({"", "GoogleTest", "USB Printer 1000"});
// Not a printer at all.
auto non_printer = UsbDeviceFake::Clone(*usb_printer.get());
non_printer->MutableDeviceDescriptor().idProduct = 0x7654;
non_printer->MutableDeviceDescriptor().bDeviceClass = LIBUSB_DT_HUB;
non_printer->SetStringDescriptors({"", "GoogleTest", "USB Gadget 500"});
std::vector<std::unique_ptr<UsbDevice>> device_list;
device_list.emplace_back(std::move(non_printer));
device_list.emplace_back(std::move(ippusb_escl_device));
device_list.emplace_back(std::move(ippusb_printer));
device_list.emplace_back(std::move(usb_printer));
auto libusb = std::make_unique<LibusbWrapperFake>();
libusb->SetDevices(std::move(device_list));
base::test::SingleThreadTaskEnvironment task_environment;
base::RunLoop run_loop;
// A "socket" that can reach the fake IPP-USB scanner and the matching
// fake SANE device to talk to it.
auto ippusb_scanner = std::make_unique<SaneDeviceFake>();
base::ScopedTempDir temp_dir;
ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
auto sane_client = std::make_unique<SaneClientFake>();
sane_client->SetIppUsbSocketDir(temp_dir.GetPath());
base::FilePath ippusb_escl_path = temp_dir.GetPath().Append("1234-4321.sock");
base::File ippusb_escl_socket(
ippusb_escl_path, base::File::FLAG_CREATE | base::File::FLAG_WRITE);
base::FilePath ippusb_path = temp_dir.GetPath().Append("1234-6543.sock");
base::File ippusb_socket(ippusb_path,
base::File::FLAG_CREATE | base::File::FLAG_WRITE);
sane_client->SetDeviceForName(
"airscan:escl:GoogleTest eSCL Scanner 3000:unix://1234-4321.sock/eSCL/",
std::move(ippusb_scanner));
sane_client->SetListDevicesResult(true);
// Duplicates of eSCL over ippusb that are filtered out.
sane_client->AddDevice("pixma:12344321_12AF", "GoogleTest",
"eSCL Scanner 3001", "eSCL");
auto pixma_scanner = std::make_unique<SaneDeviceFake>();
sane_client->SetDeviceForName("pixma:12344321_12AF",
std::move(pixma_scanner));
sane_client->AddDevice("epson2:libusb:001:001", "GoogleTest",
"eSCL Scanner 3002", "eSCL");
auto epson2_scanner = std::make_unique<SaneDeviceFake>();
sane_client->SetDeviceForName("epson2:libusb:001:001",
std::move(epson2_scanner));
// Unique device without ippusb support that is added during SANE probing.
sane_client->AddDevice("epsonds:libusb:001:002", "GoogleTest",
"SANE Scanner 4000", "USB");
auto epsonds_scanner = std::make_unique<SaneDeviceFake>();
sane_client->SetDeviceForName("epsonds:libusb:001:002",
std::move(epsonds_scanner));
auto tracker =
std::make_unique<DeviceTracker>(sane_client.get(), libusb.get());
MockFirewallManager firewall_manager(/*interface=*/"test");
EXPECT_CALL(firewall_manager, RequestUdpPortAccess(8612))
.WillOnce(testing::Return(PortToken(/*firewall_manager=*/nullptr,
/*port=*/8612)));
tracker->SetFirewallManager(&firewall_manager);
// Signal handler that tracks all the events of interest.
std::vector<std::string> closed_sessions;
std::set<std::unique_ptr<ScannerInfo>> scanners;
std::string session_id;
auto signal_handler = base::BindLambdaForTesting(
[&run_loop, &tracker, &closed_sessions, &scanners,
&session_id](const ScannerListChangedSignal& signal) {
if (signal.event_type() == ScannerListChangedSignal::ENUM_COMPLETE) {
StopScannerDiscoveryRequest stop_request;
stop_request.set_session_id(session_id);
tracker->StopScannerDiscovery(stop_request);
}
if (signal.event_type() == ScannerListChangedSignal::SESSION_ENDING) {
closed_sessions.push_back(signal.session_id());
run_loop.Quit();
}
if (signal.event_type() == ScannerListChangedSignal::SCANNER_ADDED) {
std::unique_ptr<ScannerInfo> info(signal.scanner().New());
info->CopyFrom(signal.scanner());
scanners.insert(std::move(info));
}
});
tracker->SetScannerListChangedSignalSender(signal_handler);
StartScannerDiscoveryRequest start_request;
start_request.set_client_id("ippusb");
start_request.set_preferred_only(true);
StartScannerDiscoveryResponse response =
tracker->StartScannerDiscovery(start_request);
EXPECT_TRUE(response.started());
EXPECT_FALSE(response.session_id().empty());
session_id = response.session_id();
run_loop.Run();
EXPECT_THAT(closed_sessions, ElementsAre(response.session_id()));
EXPECT_THAT(
scanners,
Each(Pointee(Property(&ScannerInfo::manufacturer, "GoogleTest"))));
EXPECT_THAT(
scanners,
UnorderedElementsAre(
Pointee(Property("model", &ScannerInfo::model, "eSCL Scanner 3000")),
Pointee(
Property("model", &ScannerInfo::model, "SANE Scanner 4000"))));
}
TEST(DeviceTrackerTest, OpenScannerEmptyDevice) {
auto sane_client = std::make_unique<SaneClientFake>();
auto libusb = std::make_unique<LibusbWrapperFake>();
auto tracker =
std::make_unique<DeviceTracker>(sane_client.get(), libusb.get());
OpenScannerRequest request;
request.set_client_id("DeviceTrackerTest");
auto response = tracker->OpenScanner(request);
EXPECT_THAT(response.scanner_id(), EqualsProto(request.scanner_id()));
EXPECT_EQ(response.result(), OPERATION_RESULT_INVALID);
EXPECT_EQ(tracker->NumOpenScanners(), 0);
}
TEST(DeviceTrackerTest, OpenScannerEmptyString) {
auto sane_client = std::make_unique<SaneClientFake>();
auto libusb = std::make_unique<LibusbWrapperFake>();
auto tracker =
std::make_unique<DeviceTracker>(sane_client.get(), libusb.get());
OpenScannerRequest request;
request.mutable_scanner_id()->set_connection_string("Test");
OpenScannerResponse response = tracker->OpenScanner(request);
EXPECT_THAT(response.scanner_id(), EqualsProto(request.scanner_id()));
EXPECT_EQ(response.result(), OPERATION_RESULT_INVALID);
EXPECT_EQ(tracker->NumOpenScanners(), 0);
}
TEST(DeviceTrackerTest, OpenScannerNoDevice) {
auto sane_client = std::make_unique<SaneClientFake>();
auto libusb = std::make_unique<LibusbWrapperFake>();
auto tracker =
std::make_unique<DeviceTracker>(sane_client.get(), libusb.get());
OpenScannerRequest request;
request.mutable_scanner_id()->set_connection_string("Test");
request.set_client_id("DeviceTrackerTest");
OpenScannerResponse response = tracker->OpenScanner(request);
EXPECT_THAT(response.scanner_id(), EqualsProto(request.scanner_id()));
EXPECT_NE(response.result(), OPERATION_RESULT_SUCCESS);
EXPECT_EQ(tracker->NumOpenScanners(), 0);
}
TEST(DeviceTrackerTest, OpenScannerFirstClientSucceeds) {
auto sane_client = std::make_unique<SaneClientFake>();
auto libusb = std::make_unique<LibusbWrapperFake>();
auto tracker =
std::make_unique<DeviceTracker>(sane_client.get(), libusb.get());
auto scanner = std::make_unique<SaneDeviceFake>();
sane_client->SetDeviceForName("Test", std::move(scanner));
OpenScannerRequest request;
request.mutable_scanner_id()->set_connection_string("Test");
request.set_client_id("DeviceTrackerTest");
OpenScannerResponse response = tracker->OpenScanner(request);
EXPECT_THAT(response.scanner_id(), EqualsProto(request.scanner_id()));
EXPECT_EQ(response.result(), OPERATION_RESULT_SUCCESS);
EXPECT_THAT(response.config().scanner(), Not(EqualsProto(ScannerHandle())));
EXPECT_EQ(tracker->NumOpenScanners(), 1);
}
TEST(DeviceTrackerTest, OpenScannerSameClientSucceedsTwice) {
auto sane_client = std::make_unique<SaneClientFake>();
auto libusb = std::make_unique<LibusbWrapperFake>();
auto tracker =
std::make_unique<DeviceTracker>(sane_client.get(), libusb.get());
auto scanner = std::make_unique<SaneDeviceFake>();
sane_client->SetDeviceForName("Test", std::move(scanner));
OpenScannerRequest request;
request.mutable_scanner_id()->set_connection_string("Test");
request.set_client_id("DeviceTrackerTest");
OpenScannerResponse response1 = tracker->OpenScanner(request);
// Re-insert the test device because the fake SANE client deletes it after one
// connection.
auto scanner2 = std::make_unique<SaneDeviceFake>();
sane_client->SetDeviceForName("Test", std::move(scanner2));
OpenScannerResponse response2 = tracker->OpenScanner(request);
EXPECT_THAT(response1.scanner_id(), EqualsProto(request.scanner_id()));
EXPECT_EQ(response1.result(), OPERATION_RESULT_SUCCESS);
EXPECT_THAT(response1.config().scanner(), Not(EqualsProto(ScannerHandle())));
EXPECT_THAT(response2.scanner_id(), EqualsProto(request.scanner_id()));
EXPECT_EQ(response2.result(), OPERATION_RESULT_SUCCESS);
EXPECT_THAT(response2.config().scanner(), Not(EqualsProto(ScannerHandle())));
EXPECT_THAT(response2.config().scanner(),
Not(EqualsProto(response1.config().scanner())));
EXPECT_EQ(tracker->NumOpenScanners(), 1);
}
TEST(DeviceTrackerTest, OpenScannerSecondClientFails) {
auto sane_client = std::make_unique<SaneClientFake>();
auto libusb = std::make_unique<LibusbWrapperFake>();
auto tracker =
std::make_unique<DeviceTracker>(sane_client.get(), libusb.get());
auto scanner = std::make_unique<SaneDeviceFake>();
sane_client->SetDeviceForName("Test", std::move(scanner));
OpenScannerRequest request;
request.mutable_scanner_id()->set_connection_string("Test");
request.set_client_id("DeviceTrackerTest");
OpenScannerResponse response1 = tracker->OpenScanner(request);
// Re-insert the test device because the fake SANE client deletes it after one
// connection.
auto scanner2 = std::make_unique<SaneDeviceFake>();
sane_client->SetDeviceForName("Test", std::move(scanner2));
request.set_client_id("DeviceTrackerTest2");
OpenScannerResponse response2 = tracker->OpenScanner(request);
EXPECT_THAT(response1.scanner_id(), EqualsProto(request.scanner_id()));
EXPECT_EQ(response1.result(), OPERATION_RESULT_SUCCESS);
EXPECT_THAT(response1.config().scanner(), Not(EqualsProto(ScannerHandle())));
EXPECT_THAT(response2.scanner_id(), EqualsProto(request.scanner_id()));
EXPECT_EQ(response2.result(), OPERATION_RESULT_DEVICE_BUSY);
EXPECT_THAT(response2.config().scanner(), EqualsProto(ScannerHandle()));
EXPECT_EQ(tracker->NumOpenScanners(), 1);
}
TEST(DeviceTrackerTest, CloseScannerMissingHandle) {
auto sane_client = std::make_unique<SaneClientFake>();
auto libusb = std::make_unique<LibusbWrapperFake>();
auto tracker =
std::make_unique<DeviceTracker>(sane_client.get(), libusb.get());
CloseScannerRequest request;
CloseScannerResponse response = tracker->CloseScanner(request);
EXPECT_THAT(request.scanner(), EqualsProto(response.scanner()));
EXPECT_EQ(response.result(), OPERATION_RESULT_INVALID);
EXPECT_EQ(tracker->NumOpenScanners(), 0);
}
TEST(DeviceTrackerTest, CloseScannerInvalidHandle) {
auto sane_client = std::make_unique<SaneClientFake>();
auto libusb = std::make_unique<LibusbWrapperFake>();
auto tracker =
std::make_unique<DeviceTracker>(sane_client.get(), libusb.get());
CloseScannerRequest request;
request.mutable_scanner()->set_token("NoSuchScanner");
CloseScannerResponse response = tracker->CloseScanner(request);
EXPECT_THAT(request.scanner(), EqualsProto(response.scanner()));
EXPECT_EQ(response.result(), OPERATION_RESULT_MISSING);
EXPECT_EQ(tracker->NumOpenScanners(), 0);
}
TEST(DeviceTrackerTest, CloseScannerSuccess) {
auto sane_client = std::make_unique<SaneClientFake>();
auto libusb = std::make_unique<LibusbWrapperFake>();
auto tracker =
std::make_unique<DeviceTracker>(sane_client.get(), libusb.get());
auto scanner = std::make_unique<SaneDeviceFake>();
sane_client->SetDeviceForName("Test", std::move(scanner));
OpenScannerRequest request1;
request1.mutable_scanner_id()->set_connection_string("Test");
request1.set_client_id("DeviceTrackerTest");
OpenScannerResponse response1 = tracker->OpenScanner(request1);
EXPECT_EQ(tracker->NumOpenScanners(), 1);
CloseScannerRequest request2;
*request2.mutable_scanner() = response1.config().scanner();
CloseScannerResponse response2 = tracker->CloseScanner(request2);
EXPECT_THAT(request2.scanner(), EqualsProto(response2.scanner()));
EXPECT_EQ(response2.result(), OPERATION_RESULT_SUCCESS);
EXPECT_EQ(tracker->NumOpenScanners(), 0);
}
TEST(DeviceTrackerTest, CloseScannerTwiceFails) {
auto sane_client = std::make_unique<SaneClientFake>();
auto libusb = std::make_unique<LibusbWrapperFake>();
auto tracker =
std::make_unique<DeviceTracker>(sane_client.get(), libusb.get());
auto scanner = std::make_unique<SaneDeviceFake>();
sane_client->SetDeviceForName("Test", std::move(scanner));
OpenScannerRequest request1;
request1.mutable_scanner_id()->set_connection_string("Test");
request1.set_client_id("DeviceTrackerTest");
OpenScannerResponse response1 = tracker->OpenScanner(request1);
EXPECT_EQ(tracker->NumOpenScanners(), 1);
CloseScannerRequest request2;
*request2.mutable_scanner() = response1.config().scanner();
CloseScannerResponse response2 = tracker->CloseScanner(request2);
CloseScannerResponse response3 = tracker->CloseScanner(request2);
EXPECT_THAT(request2.scanner(), EqualsProto(response2.scanner()));
EXPECT_EQ(response2.result(), OPERATION_RESULT_SUCCESS);
EXPECT_THAT(request2.scanner(), EqualsProto(response3.scanner()));
EXPECT_EQ(response3.result(), OPERATION_RESULT_MISSING);
EXPECT_EQ(tracker->NumOpenScanners(), 0);
}
TEST(DeviceTrackerTest, CloseScannerFreesDevice) {
auto sane_client = std::make_unique<SaneClientFake>();
auto libusb = std::make_unique<LibusbWrapperFake>();
auto tracker =
std::make_unique<DeviceTracker>(sane_client.get(), libusb.get());
auto scanner = std::make_unique<SaneDeviceFake>();
sane_client->SetDeviceForName("Test", std::move(scanner));
// First client succeeds.
OpenScannerRequest open_request;
open_request.mutable_scanner_id()->set_connection_string("Test");
open_request.set_client_id("DeviceTrackerTest");
OpenScannerResponse response1 = tracker->OpenScanner(open_request);
EXPECT_EQ(tracker->NumOpenScanners(), 1);
// Re-insert the test device because the fake SANE client deletes it after one
// connection.
auto scanner2 = std::make_unique<SaneDeviceFake>();
sane_client->SetDeviceForName("Test", std::move(scanner2));
// This will fail because the device is still open.
open_request.set_client_id("DeviceTrackerTest2");
OpenScannerResponse response2 = tracker->OpenScanner(open_request);
EXPECT_EQ(tracker->NumOpenScanners(), 1);
// Close first client's handle to free up the device.
CloseScannerRequest close_request;
*close_request.mutable_scanner() = response1.config().scanner();
CloseScannerResponse response3 = tracker->CloseScanner(close_request);
EXPECT_EQ(tracker->NumOpenScanners(), 0);
// Now the second client can open the device.
OpenScannerResponse response4 = tracker->OpenScanner(open_request);
EXPECT_EQ(tracker->NumOpenScanners(), 1);
EXPECT_THAT(response1.scanner_id(), EqualsProto(open_request.scanner_id()));
EXPECT_EQ(response1.result(), OPERATION_RESULT_SUCCESS);
EXPECT_THAT(response1.config().scanner(), Not(EqualsProto(ScannerHandle())));
EXPECT_THAT(response2.scanner_id(), EqualsProto(open_request.scanner_id()));
EXPECT_EQ(response2.result(), OPERATION_RESULT_DEVICE_BUSY);
EXPECT_THAT(response2.config().scanner(), EqualsProto(ScannerHandle()));
EXPECT_THAT(response3.scanner(), EqualsProto(close_request.scanner()));
EXPECT_EQ(response3.result(), OPERATION_RESULT_SUCCESS);
EXPECT_THAT(response4.scanner_id(), EqualsProto(open_request.scanner_id()));
EXPECT_EQ(response4.result(), OPERATION_RESULT_SUCCESS);
EXPECT_THAT(response4.config().scanner(), Not(EqualsProto(ScannerHandle())));
EXPECT_THAT(response4.config().scanner(),
Not(EqualsProto(response1.config().scanner())));
}
TEST(DeviceTrackerTest, SetOptionsMissingHandleFails) {
auto sane_client = std::make_unique<SaneClientFake>();
auto libusb = std::make_unique<LibusbWrapperFake>();
auto tracker =
std::make_unique<DeviceTracker>(sane_client.get(), libusb.get());
SetOptionsRequest request;
request.add_options()->set_name("option");
SetOptionsResponse response = tracker->SetOptions(request);
EXPECT_THAT(response.scanner(), EqualsProto(request.scanner()));
ASSERT_TRUE(response.results().contains("option"));
EXPECT_EQ(response.results().at("option"), OPERATION_RESULT_INVALID);
EXPECT_FALSE(response.has_config());
}
TEST(DeviceTrackerTest, SetOptionsEmptyHandleFails) {
auto sane_client = std::make_unique<SaneClientFake>();
auto libusb = std::make_unique<LibusbWrapperFake>();
auto tracker =
std::make_unique<DeviceTracker>(sane_client.get(), libusb.get());
SetOptionsRequest request;
request.mutable_scanner()->set_token("");
request.add_options()->set_name("option");
SetOptionsResponse response = tracker->SetOptions(request);
EXPECT_THAT(response.scanner(), EqualsProto(request.scanner()));
ASSERT_TRUE(response.results().contains("option"));
EXPECT_EQ(response.results().at("option"), OPERATION_RESULT_INVALID);
EXPECT_FALSE(response.has_config());
}
TEST(DeviceTrackerTest, SetOptionsInvalidHandleFails) {
auto sane_client = std::make_unique<SaneClientFake>();
auto libusb = std::make_unique<LibusbWrapperFake>();
auto tracker =
std::make_unique<DeviceTracker>(sane_client.get(), libusb.get());
SetOptionsRequest request;
request.mutable_scanner()->set_token("NoSuchScanner");
request.add_options()->set_name("option");
SetOptionsResponse response = tracker->SetOptions(request);
EXPECT_THAT(response.scanner(), EqualsProto(request.scanner()));
ASSERT_TRUE(response.results().contains("option"));
EXPECT_EQ(response.results().at("option"), OPERATION_RESULT_MISSING);
EXPECT_FALSE(response.has_config());
}
TEST(DeviceTrackerTest, SetOptionsScannerConfigFails) {
auto sane_client = std::make_unique<SaneClientFake>();
auto libusb = std::make_unique<LibusbWrapperFake>();
auto tracker =
std::make_unique<DeviceTracker>(sane_client.get(), libusb.get());
auto scanner = std::make_unique<SaneDeviceFake>();
SaneDeviceFake* raw_scanner = scanner.get();
sane_client->SetDeviceForName("Test", std::move(scanner));
OpenScannerRequest open_request;
open_request.mutable_scanner_id()->set_connection_string("Test");
open_request.set_client_id("DeviceTrackerTest");
OpenScannerResponse open_response = tracker->OpenScanner(open_request);
ASSERT_EQ(open_response.result(), OPERATION_RESULT_SUCCESS);
raw_scanner->SetScannerConfig(std::nullopt);
SetOptionsRequest set_request;
*set_request.mutable_scanner() = open_response.config().scanner();
set_request.add_options()->set_name("option");
SetOptionsResponse set_response = tracker->SetOptions(set_request);
EXPECT_THAT(set_response.scanner(), EqualsProto(set_request.scanner()));
ASSERT_TRUE(set_response.results().contains("option"));
EXPECT_EQ(set_response.results().at("option"),
OPERATION_RESULT_INTERNAL_ERROR);
EXPECT_FALSE(set_response.has_config());
}
TEST(DeviceTrackerTest, SetOptionsAllOptionsAttempted) {
auto sane_client = std::make_unique<SaneClientFake>();
auto libusb = std::make_unique<LibusbWrapperFake>();
auto tracker =
std::make_unique<DeviceTracker>(sane_client.get(), libusb.get());
auto scanner = std::make_unique<SaneDeviceFake>();
scanner->SetOptionStatus("option1", SANE_STATUS_INVAL);
scanner->SetOptionStatus("option2", SANE_STATUS_GOOD);
sane_client->SetDeviceForName("Test", std::move(scanner));
OpenScannerRequest open_request;
open_request.mutable_scanner_id()->set_connection_string("Test");
open_request.set_client_id("DeviceTrackerTest");
OpenScannerResponse open_response = tracker->OpenScanner(open_request);
ASSERT_EQ(open_response.result(), OPERATION_RESULT_SUCCESS);
SetOptionsRequest set_request;
*set_request.mutable_scanner() = open_response.config().scanner();
set_request.add_options()->set_name("option1");
set_request.add_options()->set_name("option2");
SetOptionsResponse set_response = tracker->SetOptions(set_request);
EXPECT_THAT(set_response.scanner(), EqualsProto(set_request.scanner()));
ASSERT_TRUE(set_response.results().contains("option1"));
EXPECT_EQ(set_response.results().at("option1"), OPERATION_RESULT_INVALID);
ASSERT_TRUE(set_response.results().contains("option2"));
EXPECT_EQ(set_response.results().at("option2"), OPERATION_RESULT_SUCCESS);
EXPECT_TRUE(set_response.has_config());
EXPECT_THAT(set_response.config().scanner(),
EqualsProto(set_request.scanner()));
}
TEST(DeviceTrackerTest, StartPreparedScanMissingHandleFails) {
auto sane_client = std::make_unique<SaneClientFake>();
auto libusb = std::make_unique<LibusbWrapperFake>();
auto tracker =
std::make_unique<DeviceTracker>(sane_client.get(), libusb.get());
StartPreparedScanRequest request;
StartPreparedScanResponse response = tracker->StartPreparedScan(request);
EXPECT_THAT(response.scanner(), EqualsProto(request.scanner()));
EXPECT_EQ(response.result(), OPERATION_RESULT_INVALID);
EXPECT_FALSE(response.has_job_handle());
}
TEST(DeviceTrackerTest, StartPreparedScanEmptyHandleFails) {
auto sane_client = std::make_unique<SaneClientFake>();
auto libusb = std::make_unique<LibusbWrapperFake>();
auto tracker =
std::make_unique<DeviceTracker>(sane_client.get(), libusb.get());
StartPreparedScanRequest request;
request.mutable_scanner()->set_token("");
StartPreparedScanResponse response = tracker->StartPreparedScan(request);
EXPECT_THAT(response.scanner(), EqualsProto(request.scanner()));
EXPECT_EQ(response.result(), OPERATION_RESULT_INVALID);
EXPECT_FALSE(response.has_job_handle());
}
TEST(DeviceTrackerTest, StartPreparedScanInvalidHandleFails) {
auto sane_client = std::make_unique<SaneClientFake>();
auto libusb = std::make_unique<LibusbWrapperFake>();
auto tracker =
std::make_unique<DeviceTracker>(sane_client.get(), libusb.get());
StartPreparedScanRequest request;
request.mutable_scanner()->set_token("NoSuchScanner");
StartPreparedScanResponse response = tracker->StartPreparedScan(request);
EXPECT_THAT(response.scanner(), EqualsProto(request.scanner()));
EXPECT_EQ(response.result(), OPERATION_RESULT_MISSING);
EXPECT_FALSE(response.has_job_handle());
}
TEST(DeviceTrackerTest, StartPreparedScanMissingImageFormatFails) {
auto sane_client = std::make_unique<SaneClientFake>();
auto libusb = std::make_unique<LibusbWrapperFake>();
auto tracker =
std::make_unique<DeviceTracker>(sane_client.get(), libusb.get());
auto scanner = std::make_unique<SaneDeviceFake>();
scanner->SetScanParameters(MakeScanParameters(10, 10));
sane_client->SetDeviceForName("Test", std::move(scanner));
OpenScannerRequest open_request;
open_request.mutable_scanner_id()->set_connection_string("Test");
open_request.set_client_id("DeviceTrackerTest");
OpenScannerResponse open_response = tracker->OpenScanner(open_request);
ASSERT_EQ(open_response.result(), OPERATION_RESULT_SUCCESS);
StartPreparedScanRequest sps_request;
*sps_request.mutable_scanner() = open_response.config().scanner();
StartPreparedScanResponse sps_response =
tracker->StartPreparedScan(sps_request);
EXPECT_THAT(sps_response.scanner(), EqualsProto(sps_request.scanner()));
EXPECT_EQ(sps_response.result(), OPERATION_RESULT_INVALID);
EXPECT_FALSE(sps_response.has_job_handle());
}
TEST(DeviceTrackerTest, StartPreparedScanDeviceStartFails) {
auto sane_client = std::make_unique<SaneClientFake>();
auto libusb = std::make_unique<LibusbWrapperFake>();
auto tracker =
std::make_unique<DeviceTracker>(sane_client.get(), libusb.get());
auto scanner = std::make_unique<SaneDeviceFake>();
scanner->SetScanParameters(MakeScanParameters(10, 10));
scanner->SetStartScanResult(SANE_STATUS_JAMMED);
sane_client->SetDeviceForName("Test", std::move(scanner));
OpenScannerRequest open_request;
open_request.mutable_scanner_id()->set_connection_string("Test");
open_request.set_client_id("DeviceTrackerTest");
OpenScannerResponse open_response = tracker->OpenScanner(open_request);
ASSERT_EQ(open_response.result(), OPERATION_RESULT_SUCCESS);
StartPreparedScanRequest sps_request;
*sps_request.mutable_scanner() = open_response.config().scanner();
sps_request.set_image_format("image/jpeg");
StartPreparedScanResponse sps_response =
tracker->StartPreparedScan(sps_request);
EXPECT_THAT(sps_response.scanner(), EqualsProto(sps_request.scanner()));
EXPECT_EQ(sps_response.result(), OPERATION_RESULT_ADF_JAMMED);
EXPECT_FALSE(sps_response.has_job_handle());
}
TEST(DeviceTrackerTest, StartPreparedScanDeviceMissingJob) {
auto sane_client = std::make_unique<SaneClientFake>();
auto libusb = std::make_unique<LibusbWrapperFake>();
auto tracker =
std::make_unique<DeviceTracker>(sane_client.get(), libusb.get());
auto scanner = std::make_unique<SaneDeviceFake>();
scanner->SetScanParameters(MakeScanParameters(10, 10));
scanner->SetCallStartJob(false);
sane_client->SetDeviceForName("Test", std::move(scanner));
OpenScannerRequest open_request;
open_request.mutable_scanner_id()->set_connection_string("Test");
open_request.set_client_id("DeviceTrackerTest");
OpenScannerResponse open_response = tracker->OpenScanner(open_request);
ASSERT_EQ(open_response.result(), OPERATION_RESULT_SUCCESS);
StartPreparedScanRequest sps_request;
*sps_request.mutable_scanner() = open_response.config().scanner();
sps_request.set_image_format("image/jpeg");
StartPreparedScanResponse sps_response =
tracker->StartPreparedScan(sps_request);
EXPECT_THAT(sps_response.scanner(), EqualsProto(sps_request.scanner()));
EXPECT_EQ(sps_response.result(), OPERATION_RESULT_INTERNAL_ERROR);
EXPECT_FALSE(sps_response.has_job_handle());
}
TEST(DeviceTrackerTest, StartPreparedScanFailsWithoutImageReader) {
auto sane_client = std::make_unique<SaneClientFake>();
auto libusb = std::make_unique<LibusbWrapperFake>();
auto tracker =
std::make_unique<DeviceTracker>(sane_client.get(), libusb.get());
auto scanner = std::make_unique<SaneDeviceFake>();
// No parameters set, so image reader creation will fail.
sane_client->SetDeviceForName("Test", std::move(scanner));
OpenScannerRequest open_request;
open_request.mutable_scanner_id()->set_connection_string("Test");
open_request.set_client_id("DeviceTrackerTest");
OpenScannerResponse open_response = tracker->OpenScanner(open_request);
ASSERT_EQ(open_response.result(), OPERATION_RESULT_SUCCESS);
StartPreparedScanRequest sps_request;
*sps_request.mutable_scanner() = open_response.config().scanner();
sps_request.set_image_format("image/jpeg");
StartPreparedScanResponse sps_response =
tracker->StartPreparedScan(sps_request);
EXPECT_THAT(sps_response.scanner(), EqualsProto(sps_request.scanner()));
EXPECT_NE(sps_response.result(), OPERATION_RESULT_SUCCESS);
EXPECT_FALSE(sps_response.has_job_handle());
}
TEST(DeviceTrackerTest, StartPreparedScanCreatesJob) {
auto sane_client = std::make_unique<SaneClientFake>();
auto libusb = std::make_unique<LibusbWrapperFake>();
auto tracker =
std::make_unique<DeviceTracker>(sane_client.get(), libusb.get());
auto scanner = std::make_unique<SaneDeviceFake>();
scanner->SetScanParameters(MakeScanParameters(10, 10));
sane_client->SetDeviceForName("Test", std::move(scanner));
OpenScannerRequest open_request;
open_request.mutable_scanner_id()->set_connection_string("Test");
open_request.set_client_id("DeviceTrackerTest");
OpenScannerResponse open_response = tracker->OpenScanner(open_request);
ASSERT_EQ(open_response.result(), OPERATION_RESULT_SUCCESS);
StartPreparedScanRequest sps_request;
*sps_request.mutable_scanner() = open_response.config().scanner();
sps_request.set_image_format("image/jpeg");
StartPreparedScanResponse sps_response =
tracker->StartPreparedScan(sps_request);
EXPECT_THAT(sps_response.scanner(), EqualsProto(sps_request.scanner()));
EXPECT_EQ(sps_response.result(), OPERATION_RESULT_SUCCESS);
EXPECT_TRUE(sps_response.has_job_handle());
}
// CancelScan with a scan_uuid is supposed to be handled by Manager::CancelScan,
// not DeviceTracker::CancelScan.
TEST(DeviceTrackerTest, CancelScanByUuidIsBlocked) {
auto sane_client = std::make_unique<SaneClientFake>();
auto libusb = std::make_unique<LibusbWrapperFake>();
auto tracker =
std::make_unique<DeviceTracker>(sane_client.get(), libusb.get());
CancelScanRequest request;
request.set_scan_uuid("12345");
ASSERT_DEATH(tracker->CancelScan(std::move(request)), "Manager::CancelScan");
}
TEST(DeviceTrackerTest, CancelScanRequiresJobHandle) {
auto sane_client = std::make_unique<SaneClientFake>();
auto libusb = std::make_unique<LibusbWrapperFake>();
auto tracker =
std::make_unique<DeviceTracker>(sane_client.get(), libusb.get());
CancelScanRequest request;
request.mutable_job_handle()->set_token("");
CancelScanResponse response = tracker->CancelScan(request);
EXPECT_FALSE(response.success());
EXPECT_NE(response.failure_reason(), "");
EXPECT_EQ(response.result(), OPERATION_RESULT_INVALID);
EXPECT_THAT(response.job_handle(), EqualsProto(request.job_handle()));
}
TEST(DeviceTrackerTest, CancelScanInvalidJobHandle) {
auto sane_client = std::make_unique<SaneClientFake>();
auto libusb = std::make_unique<LibusbWrapperFake>();
auto tracker =
std::make_unique<DeviceTracker>(sane_client.get(), libusb.get());
CancelScanRequest request;
request.mutable_job_handle()->set_token("bad_handle");
request.set_scan_uuid("bad_uuid");
CancelScanResponse response = tracker->CancelScan(request);
EXPECT_FALSE(response.success());
EXPECT_THAT(response.failure_reason(), HasSubstr("bad_handle"));
EXPECT_THAT(response.failure_reason(), Not(HasSubstr("bad_uuid")));
EXPECT_EQ(response.result(), OPERATION_RESULT_INVALID);
EXPECT_THAT(response.job_handle(), EqualsProto(request.job_handle()));
}
TEST(DeviceTrackerTest, CancelScanClosedScanner) {
auto sane_client = std::make_unique<SaneClientFake>();
auto libusb = std::make_unique<LibusbWrapperFake>();
auto tracker =
std::make_unique<DeviceTracker>(sane_client.get(), libusb.get());
auto scanner = std::make_unique<SaneDeviceFake>();
scanner->SetScanParameters(MakeScanParameters(10, 10));
sane_client->SetDeviceForName("Test", std::move(scanner));
OpenScannerRequest open_request;
open_request.mutable_scanner_id()->set_connection_string("Test");
open_request.set_client_id("DeviceTrackerTest");
OpenScannerResponse open_response = tracker->OpenScanner(open_request);
ASSERT_EQ(open_response.result(), OPERATION_RESULT_SUCCESS);
StartPreparedScanRequest sps_request;
*sps_request.mutable_scanner() = open_response.config().scanner();
sps_request.set_image_format("image/jpeg");
StartPreparedScanResponse sps_response =
tracker->StartPreparedScan(sps_request);
ASSERT_EQ(sps_response.result(), OPERATION_RESULT_SUCCESS);
// Close device, leaving a dangling job handle.
CloseScannerRequest close_request;
*close_request.mutable_scanner() = open_response.config().scanner();
CloseScannerResponse close_response = tracker->CloseScanner(close_request);
ASSERT_EQ(close_response.result(), OPERATION_RESULT_SUCCESS);