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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 "src/server/report/logging/compositor_report.h"
#include "mir/logging/logger.h"
#include "mir/test/doubles/advanceable_clock.h"
#include <gtest/gtest.h>
#include <string>
#include <cstdio>
using namespace std;
namespace mtd = mir::test::doubles;
namespace mrl = mir::report::logging;
namespace ml = mir::logging;
namespace
{
class Recorder : public ml::Logger
{
public:
void log(ml::Severity, string const& message, string const&)
{
last = message;
}
string const& last_message() const
{
return last;
}
bool last_message_contains(char const* substr)
{
return last.find(substr) != string::npos;
}
bool scrape(float& fps, float& frame_time) const
{
return sscanf(last.c_str(), "Display %*s averaged %f FPS, %f ms/frame",
&fps, &frame_time) == 2;
}
private:
string last;
};
struct LoggingCompositorReport : ::testing::Test
{
std::shared_ptr<mtd::AdvanceableClock> const clock =
std::make_shared<mtd::AdvanceableClock>();
std::shared_ptr<Recorder> const recorder =
make_shared<Recorder>();
mrl::CompositorReport report{recorder, clock};
};
} // namespace
TEST_F(LoggingCompositorReport, calculates_accurate_stats)
{
/*
* This test just verifies the important stats; FPS and frame time.
* We don't need to validate all the numbers because maintaining low
* coupling to log formats is more important.
*/
const void* const display_id = nullptr;
int target_fps = 60;
for (int frame = 0; frame < target_fps*3; frame++)
{
report.began_frame(display_id);
clock->advance_by(chrono::microseconds(1000000 / target_fps));
report.rendered_frame(display_id);
report.finished_frame(display_id);
}
float measured_fps, measured_frame_time;
ASSERT_TRUE(recorder->scrape(measured_fps, measured_frame_time))
<< recorder->last_message();
EXPECT_LE(59.9f, measured_fps);
EXPECT_GE(60.1f, measured_fps);
EXPECT_LE(16.5f, measured_frame_time);
EXPECT_GE(16.7f, measured_frame_time);
clock->advance_by(chrono::microseconds(5000000));
target_fps = 100;
for (int frame = 0; frame < target_fps*3; frame++)
{
report.began_frame(display_id);
clock->advance_by(chrono::microseconds(1000000 / target_fps));
report.rendered_frame(display_id);
report.finished_frame(display_id);
}
ASSERT_TRUE(recorder->scrape(measured_fps, measured_frame_time))
<< recorder->last_message();
EXPECT_FLOAT_EQ(100.0f, measured_fps);
EXPECT_FLOAT_EQ(10.0f, measured_frame_time);
}
TEST_F(LoggingCompositorReport, survives_pause_resume)
{
const void* const before = "before";
const void* const after = "after";
report.started();
report.began_frame(before);
clock->advance_by(chrono::microseconds(12345));
report.rendered_frame(before);
report.finished_frame(before);
report.stopped();
clock->advance_by(chrono::microseconds(12345678));
report.started();
report.began_frame(after);
clock->advance_by(chrono::microseconds(12345));
report.rendered_frame(after);
report.finished_frame(after);
clock->advance_by(chrono::microseconds(12345678));
report.began_frame(after);
clock->advance_by(chrono::microseconds(12345));
report.rendered_frame(after);
report.finished_frame(after);
report.stopped();
}
TEST_F(LoggingCompositorReport, reports_bypass_only_when_changed)
{
const void* const id = "My Screen";
report.started();
report.began_frame(id);
report.rendered_frame(id);
report.finished_frame(id);
EXPECT_TRUE(recorder->last_message_contains("bypass OFF"))
<< recorder->last_message();
for (int f = 0; f < 3; ++f)
{
report.began_frame(id);
report.rendered_frame(id);
report.finished_frame(id);
clock->advance_by(chrono::microseconds(12345678));
}
EXPECT_FALSE(recorder->last_message_contains("bypass "))
<< recorder->last_message();
report.began_frame(id);
report.finished_frame(id);
EXPECT_TRUE(recorder->last_message_contains("bypass ON"))
<< recorder->last_message();
report.stopped();
}
TEST_F(LoggingCompositorReport, bypass_has_no_render_time)
{ // Regression test for LP: #1408906
const void* const id = "My Screen";
report.started();
for (int f = 0; f < 3; ++f)
{
report.began_frame(id);
clock->advance_by(chrono::microseconds(1234));
report.finished_frame(id);
clock->advance_by(chrono::microseconds(12345678));
}
EXPECT_TRUE(recorder->last_message_contains("0.000 ms/frame"))
<< recorder->last_message();
report.stopped();
}
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