| # Copyright 2021 The Chromium OS Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| """Tests for timer.""" |
| |
| import time |
| |
| from chromite.utils import timer |
| |
| |
| def test_timer_delta(monkeypatch): |
| """Test basic usage of a Timer.""" |
| last_t = 0.0 |
| |
| def time_mock(): |
| nonlocal last_t |
| last_t += 1.0 |
| return last_t |
| |
| monkeypatch.setattr(time, 'perf_counter', time_mock) |
| |
| with timer.Timer() as t: |
| pass |
| |
| assert t.delta == 1.0 |
| |
| |
| def test_timer_average(monkeypatch): |
| """Test the timer __add__ and __truediv__ functions.""" |
| last_t = 0.0 |
| |
| def time_mock(): |
| nonlocal last_t |
| last_t += 1.0 |
| return last_t |
| |
| monkeypatch.setattr(time, 'perf_counter', time_mock) |
| |
| timers = [] |
| for x in range(10): |
| with timer.Timer(str(x)) as t: |
| pass |
| timers.append(t) |
| |
| assert sum(timers, start=timer.Timer()).delta == 10.0 |
| assert (sum(timers, start=timer.Timer()) / len(timers)).delta == 1.0 |
