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/*
* Copyright © Canonical Ltd.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 or 3 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <mir/dispatch/multiplexing_dispatchable.h>
#include <mir/events/event_builders.h>
#include <mir/glib_main_loop.h>
#include <mir/input/input_device_hub.h>
#include <mir/input/input_device_registry.h>
#include <mir/input/input_event_transformer.h>
#include <mir/input/transformer.h>
#include <mir/input/virtual_input_device.h>
#include "src/server/input/default_input_device_hub.h"
#include <mir/test/doubles/advanceable_clock.h>
#include <mir/test/doubles/mock_input_seat.h>
#include <mir/test/doubles/mock_key_mapper.h>
#include <mir/test/doubles/mock_led_observer_registrar.h>
#include <mir/test/doubles/mock_server_status_listener.h>
#include <mir/test/fake_shared.h>
#include <mir/test/fd_utils.h>
#include <mir/test/signal.h>
#include <functional>
#include <gtest/gtest.h>
#include <memory>
#include <stdexcept>
#include <xkbcommon/xkbcommon-compat.h>
namespace mt = mir::test;
namespace mtd = mt::doubles;
namespace mev = mir::events;
using namespace testing;
struct TestInputEventTransformer : testing::Test
{
mir::dispatch::MultiplexingDispatchable multiplexer;
NiceMock<mtd::MockInputSeat> mock_seat;
mtd::AdvanceableClock clock;
void SetUp() override
{
expect_and_execute_multiplexer();
}
void TearDown() override
{
}
// Borrowed from `test_single_seat_setup.cpp`
void expect_and_execute_multiplexer()
{
(void)mt::fd_becomes_readable(multiplexer.watch_fd(), std::chrono::milliseconds(100));
multiplexer.dispatch(mir::dispatch::FdEvent::readable);
}
mir::EventUPtr make_key_event()
{
return mev::make_key_event(
MirInputDeviceId{0},
clock.now().time_since_epoch(),
mir_keyboard_action_up,
XKB_KEY_W,
0,
mir_input_event_modifier_none);
}
mir::input::InputEventTransformer input_event_transformer{mt::fake_shared(mock_seat), mt::fake_shared(clock)};
};
struct MockTransformer : public mir::input::Transformer
{
MOCK_METHOD(
(bool),
transform_input_event,
(mir::input::Transformer::EventDispatcher const&, mir::input::EventBuilder*, MirEvent const&),
(override));
};
TEST_F(TestInputEventTransformer, transformer_gets_called)
{
auto mock_transformer = std::make_shared<MockTransformer>();
EXPECT_CALL(*mock_transformer, transform_input_event(_, _,_));
input_event_transformer.append(mock_transformer);
input_event_transformer.transform(*make_key_event());
}
TEST_F(TestInputEventTransformer, events_block_correctly)
{
auto mock_transformer_1 = std::make_shared<MockTransformer>();
EXPECT_CALL(*mock_transformer_1, transform_input_event(_, _, _))
.WillOnce(
[](auto*...)
{
return true;
});
auto mock_transformer_2 = std::make_shared<MockTransformer>();
EXPECT_CALL(*mock_transformer_2, transform_input_event(_, _, _)).Times(0);
input_event_transformer.append(mock_transformer_1);
input_event_transformer.append(mock_transformer_2);
input_event_transformer.transform(*make_key_event());
}
TEST_F(TestInputEventTransformer, events_cascade_correctly)
{
auto mock_transformer_1 = std::make_shared<MockTransformer>();
EXPECT_CALL(*mock_transformer_1, transform_input_event(_, _, _))
.WillOnce(
[](auto*...)
{
return false;
});
auto mock_transformer_2 = std::make_shared<MockTransformer>();
EXPECT_CALL(*mock_transformer_2, transform_input_event(_, _, _));
input_event_transformer.append(mock_transformer_1);
input_event_transformer.append(mock_transformer_2);
input_event_transformer.transform(*make_key_event());
}
TEST_F(TestInputEventTransformer, transformer_not_called_after_removal)
{
auto mock_transformer = std::make_shared<MockTransformer>();
EXPECT_CALL(*mock_transformer, transform_input_event(_, _, _))
.Times(1)
.WillOnce(
[](auto*...)
{
return true;
});
input_event_transformer.append(mock_transformer);
input_event_transformer.transform(*make_key_event());
input_event_transformer.remove(mock_transformer);
input_event_transformer.transform(*make_key_event());
}
TEST_F(TestInputEventTransformer, adding_transformer_twice_has_no_effect_on_expected_handling_of_events)
{
auto mock_transformer_1 = std::make_shared<MockTransformer>();
EXPECT_CALL(*mock_transformer_1, transform_input_event(_, _, _)).Times(1);
input_event_transformer.append(mock_transformer_1);
input_event_transformer.append(mock_transformer_1);
input_event_transformer.transform(*make_key_event());
}
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