| #!/usr/bin/env python3 |
| # Copyright 2023 The Chromium Authors |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| # Discarded events that do not get to GPU are invisible for UMA metric and |
| # therefore should be excluded in trace-based metric. This tests ensures that's |
| # the case. |
| |
| from os import sys |
| |
| import synth_common |
| |
| from synth_common import ms_to_ns |
| trace = synth_common.create_trace() |
| |
| from chrome_scroll_helper import ChromeScrollHelper |
| |
| helper = ChromeScrollHelper(trace, start_id=1234, start_gesture_id=5678) |
| |
| helper.begin(from_ms=0, dur_ms=10) |
| helper.update(from_ms=15, dur_ms=10) |
| # The next update should be recognized as janky |
| helper.update(from_ms=30, dur_ms=30) |
| helper.end(from_ms=70, dur_ms=10) |
| |
| helper.begin(from_ms=100, dur_ms=10) |
| helper.update(from_ms=115, dur_ms=10) |
| # The next update doesn't get to GPU, therefore would not be a part of jank |
| # calculation |
| helper.update(from_ms=130, dur_ms=30, gets_to_gpu=False) |
| helper.end(from_ms=170, dur_ms=10) |
| |
| sys.stdout.buffer.write(trace.trace.SerializeToString()) |
