# -*- coding: utf-8 -*- import re from datetime import datetime def test_freezing_time(testdir): testdir.makepyfile(""" import pytest from datetime import date, datetime @pytest.mark.freeze_time('2017-05-20 15:42') def test_sth(): assert datetime.now().date() == date(2017, 5, 20) """) result = testdir.runpytest('-v', '-s') assert result.ret == 0 def test_freezing_time_in_fixture(testdir): testdir.makepyfile(""" import pytest from datetime import date, datetime @pytest.fixture def today(): return datetime.now().date() @pytest.mark.freeze_time('2017-05-20 15:42') def test_sth(today): assert today == date(2017, 5, 20) """) result = testdir.runpytest('-v', '-s') assert result.ret == 0 def test_no_mark(testdir): testdir.makepyfile(""" import datetime def test_sth(): assert datetime.datetime.now() > {} """.format(repr(datetime.now()))) result = testdir.runpytest('-v', '-s') assert result.ret == 0 def test_move_to(testdir): testdir.makepyfile(""" from datetime import date import pytest @pytest.mark.freeze_time def test_changing_date(freezer): freezer.move_to('2017-05-20') assert date.today() == date(2017, 5, 20) freezer.move_to('2017-05-21') assert date.today() == date(2017, 5, 21) """) result = testdir.runpytest('-v', '-s') assert result.ret == 0 def test_fixture_durations(testdir): """ In an older version, the time would be frozen for the pytest itself too. That caused it to report weird durations for test runs, namely very large numbers for setup and very large NEGATIVE numbers for teardown. """ testdir.makepyfile(""" import pytest from datetime import date, datetime def test_truth(freezer): freezer.move_to('2000-01-01') assert True """) result = testdir.runpytest('-vv', '-s', '--durations=3') # We don't have access to the actual terminalreporter, # so the only way to collect duration times is # to parse the pytest output. DURATION_REGEX = re.compile(r''' (-?\d+\.\d+)s # Time in seconds \s+ # Whitespace (call|setup|teardown) # Test phase \s+ # Whitespace test_fixture_durations.py::test_truth # Test ID ''', re.X) durations = {} for line in result.outlines: match = DURATION_REGEX.match(line) if match is None: continue durations[match.group(2)] = float(match.group(1)) # It should take a non-negative amount of time for each of the steps, # but it also should never take longer than a second assert 0 <= durations['setup'] <= 1 assert 0 <= durations['call'] <= 1 assert 0 <= durations['teardown'] <= 1 def test_marker_durations(testdir): """ In an older version, the time would be frozen for the pytest itself too. That caused it to report weird durations for test runs, namely very large numbers for setup and very large NEGATIVE numbers for teardown. """ testdir.makepyfile(""" import pytest from datetime import date, datetime @pytest.mark.freeze_time('2000-01-01') def test_truth(): assert True """) result = testdir.runpytest('-vv', '-s', '--durations=3') # We don't have access to the actual terminalreporter, # so the only way to collect duration times is # to parse the pytest output. DURATION_REGEX = re.compile(r''' (-?\d+\.\d+)s # Time in seconds \s+ # Whitespace (call|setup|teardown) # Test phase \s+ # Whitespace test_marker_durations.py::test_truth # Test ID ''', re.X) durations = {} for line in result.outlines: match = DURATION_REGEX.match(line) if match is None: continue durations[match.group(2)] = float(match.group(1)) # It should take a non-negative amount of time for each of the steps, # but it also should never take longer than a second assert 0 <= durations['setup'] <= 1 assert 0 <= durations['call'] <= 1 assert 0 <= durations['teardown'] <= 1 def test_fixture_no_mark(testdir): testdir.makepyfile(""" from datetime import datetime import time def test_just_fixture(freezer): now = datetime.now() time.sleep(0.1) later = datetime.now() assert now == later """) result = testdir.runpytest('-v', '-s') assert result.ret == 0 def test_fixture_freezes_time(testdir): testdir.makepyfile(""" import time def test_fixture_freezes_time(freezer): now = time.time() time.sleep(0.1) later = time.time() assert now == later """) result = testdir.runpytest('-v', '-s') assert result.ret == 0 def test_marker_freezes_time(testdir): testdir.makepyfile(""" import pytest import time @pytest.mark.freeze_time('2000-01-01') def test_marker_freezes_time(freezer): now = time.time() time.sleep(0.1) later = time.time() assert now == later """) result = testdir.runpytest('-v', '-s') assert result.ret == 0 def test_class_freezing_time(testdir): testdir.makepyfile(""" import pytest from datetime import date, datetime class TestAsClass(object): @pytest.mark.freeze_time('2017-05-20 15:42') def test_sth(self): assert datetime.now().date() == date(2017, 5, 20) """) result = testdir.runpytest('-v', '-s') assert result.ret == 0 def test_class_move_to(testdir): testdir.makepyfile(""" from datetime import date import pytest class TestAsClass(object): @pytest.mark.freeze_time def test_changing_date(self, freezer): freezer.move_to('2017-05-20') assert date.today() == date(2017, 5, 20) freezer.move_to('2017-05-21') assert date.today() == date(2017, 5, 21) """) result = testdir.runpytest('-v', '-s') assert result.ret == 0 def test_class_just_fixture(testdir): testdir.makepyfile(""" from datetime import datetime import time class TestAsClass(object): def test_just_fixture(self, freezer): now = datetime.now() time.sleep(0.1) later = datetime.now() assert now == later """) result = testdir.runpytest('-v', '-s') assert result.ret == 0