281 lines
8.4 KiB
Python
281 lines
8.4 KiB
Python
import pytest
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from _pytest.monkeypatch import MonkeyPatch
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from _pytest.pytester import Pytester
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@pytest.fixture
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def stepwise_pytester(pytester: Pytester) -> Pytester:
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# Rather than having to modify our testfile between tests, we introduce
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# a flag for whether or not the second test should fail.
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pytester.makeconftest(
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"""
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def pytest_addoption(parser):
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group = parser.getgroup('general')
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group.addoption('--fail', action='store_true', dest='fail')
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group.addoption('--fail-last', action='store_true', dest='fail_last')
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"""
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)
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# Create a simple test suite.
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pytester.makepyfile(
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test_a="""
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def test_success_before_fail():
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assert 1
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def test_fail_on_flag(request):
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assert not request.config.getvalue('fail')
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def test_success_after_fail():
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assert 1
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def test_fail_last_on_flag(request):
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assert not request.config.getvalue('fail_last')
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def test_success_after_last_fail():
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assert 1
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"""
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)
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pytester.makepyfile(
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test_b="""
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def test_success():
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assert 1
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"""
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)
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# customize cache directory so we don't use the tox's cache directory, which makes tests in this module flaky
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pytester.makeini(
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"""
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[pytest]
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cache_dir = .cache
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"""
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)
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return pytester
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@pytest.fixture
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def error_pytester(pytester: Pytester) -> Pytester:
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pytester.makepyfile(
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test_a="""
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def test_error(nonexisting_fixture):
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assert 1
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def test_success_after_fail():
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assert 1
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"""
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)
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return pytester
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@pytest.fixture
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def broken_pytester(pytester: Pytester) -> Pytester:
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pytester.makepyfile(
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working_testfile="def test_proper(): assert 1", broken_testfile="foobar"
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)
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return pytester
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def _strip_resource_warnings(lines):
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# Strip unreliable ResourceWarnings, so no-output assertions on stderr can work.
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# (https://github.com/pytest-dev/pytest/issues/5088)
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return [
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x
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for x in lines
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if not x.startswith(("Exception ignored in:", "ResourceWarning"))
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]
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def test_run_without_stepwise(stepwise_pytester: Pytester) -> None:
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result = stepwise_pytester.runpytest("-v", "--strict-markers", "--fail")
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result.stdout.fnmatch_lines(["*test_success_before_fail PASSED*"])
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result.stdout.fnmatch_lines(["*test_fail_on_flag FAILED*"])
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result.stdout.fnmatch_lines(["*test_success_after_fail PASSED*"])
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def test_stepwise_output_summary(pytester: Pytester) -> None:
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pytester.makepyfile(
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"""
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import pytest
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@pytest.mark.parametrize("expected", [True, True, True, True, False])
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def test_data(expected):
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assert expected
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"""
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)
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result = pytester.runpytest("-v", "--stepwise")
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result.stdout.fnmatch_lines(["stepwise: no previously failed tests, not skipping."])
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result = pytester.runpytest("-v", "--stepwise")
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result.stdout.fnmatch_lines(
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["stepwise: skipping 4 already passed items.", "*1 failed, 4 deselected*"]
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)
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def test_fail_and_continue_with_stepwise(stepwise_pytester: Pytester) -> None:
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# Run the tests with a failing second test.
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result = stepwise_pytester.runpytest(
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"-v", "--strict-markers", "--stepwise", "--fail"
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)
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assert _strip_resource_warnings(result.stderr.lines) == []
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stdout = result.stdout.str()
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# Make sure we stop after first failing test.
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assert "test_success_before_fail PASSED" in stdout
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assert "test_fail_on_flag FAILED" in stdout
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assert "test_success_after_fail" not in stdout
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# "Fix" the test that failed in the last run and run it again.
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result = stepwise_pytester.runpytest("-v", "--strict-markers", "--stepwise")
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assert _strip_resource_warnings(result.stderr.lines) == []
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stdout = result.stdout.str()
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# Make sure the latest failing test runs and then continues.
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assert "test_success_before_fail" not in stdout
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assert "test_fail_on_flag PASSED" in stdout
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assert "test_success_after_fail PASSED" in stdout
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@pytest.mark.parametrize("stepwise_skip", ["--stepwise-skip", "--sw-skip"])
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def test_run_with_skip_option(stepwise_pytester: Pytester, stepwise_skip: str) -> None:
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result = stepwise_pytester.runpytest(
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"-v",
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"--strict-markers",
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"--stepwise",
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stepwise_skip,
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"--fail",
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"--fail-last",
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)
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assert _strip_resource_warnings(result.stderr.lines) == []
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stdout = result.stdout.str()
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# Make sure first fail is ignore and second fail stops the test run.
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assert "test_fail_on_flag FAILED" in stdout
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assert "test_success_after_fail PASSED" in stdout
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assert "test_fail_last_on_flag FAILED" in stdout
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assert "test_success_after_last_fail" not in stdout
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def test_fail_on_errors(error_pytester: Pytester) -> None:
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result = error_pytester.runpytest("-v", "--strict-markers", "--stepwise")
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assert _strip_resource_warnings(result.stderr.lines) == []
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stdout = result.stdout.str()
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assert "test_error ERROR" in stdout
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assert "test_success_after_fail" not in stdout
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def test_change_testfile(stepwise_pytester: Pytester) -> None:
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result = stepwise_pytester.runpytest(
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"-v", "--strict-markers", "--stepwise", "--fail", "test_a.py"
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)
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assert _strip_resource_warnings(result.stderr.lines) == []
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stdout = result.stdout.str()
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assert "test_fail_on_flag FAILED" in stdout
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# Make sure the second test run starts from the beginning, since the
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# test to continue from does not exist in testfile_b.
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result = stepwise_pytester.runpytest(
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"-v", "--strict-markers", "--stepwise", "test_b.py"
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)
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assert _strip_resource_warnings(result.stderr.lines) == []
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stdout = result.stdout.str()
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assert "test_success PASSED" in stdout
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@pytest.mark.parametrize("broken_first", [True, False])
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def test_stop_on_collection_errors(
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broken_pytester: Pytester, broken_first: bool
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) -> None:
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"""Stop during collection errors. Broken test first or broken test last
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actually surfaced a bug (#5444), so we test both situations."""
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files = ["working_testfile.py", "broken_testfile.py"]
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if broken_first:
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files.reverse()
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result = broken_pytester.runpytest("-v", "--strict-markers", "--stepwise", *files)
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result.stdout.fnmatch_lines("*error during collection*")
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def test_xfail_handling(pytester: Pytester, monkeypatch: MonkeyPatch) -> None:
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"""Ensure normal xfail is ignored, and strict xfail interrupts the session in sw mode
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(#5547)
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"""
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monkeypatch.setattr("sys.dont_write_bytecode", True)
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contents = """
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import pytest
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def test_a(): pass
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@pytest.mark.xfail(strict={strict})
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def test_b(): assert {assert_value}
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def test_c(): pass
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def test_d(): pass
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"""
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pytester.makepyfile(contents.format(assert_value="0", strict="False"))
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result = pytester.runpytest("--sw", "-v")
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result.stdout.fnmatch_lines(
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[
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"*::test_a PASSED *",
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"*::test_b XFAIL *",
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"*::test_c PASSED *",
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"*::test_d PASSED *",
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"* 3 passed, 1 xfailed in *",
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]
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)
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pytester.makepyfile(contents.format(assert_value="1", strict="True"))
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result = pytester.runpytest("--sw", "-v")
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result.stdout.fnmatch_lines(
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[
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"*::test_a PASSED *",
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"*::test_b FAILED *",
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"* Interrupted*",
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"* 1 failed, 1 passed in *",
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]
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)
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pytester.makepyfile(contents.format(assert_value="0", strict="True"))
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result = pytester.runpytest("--sw", "-v")
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result.stdout.fnmatch_lines(
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[
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"*::test_b XFAIL *",
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"*::test_c PASSED *",
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"*::test_d PASSED *",
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"* 2 passed, 1 deselected, 1 xfailed in *",
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]
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)
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def test_stepwise_skip_is_independent(pytester: Pytester) -> None:
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pytester.makepyfile(
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"""
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def test_one():
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assert False
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def test_two():
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assert False
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def test_three():
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assert False
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"""
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)
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result = pytester.runpytest("--tb", "no", "--stepwise-skip")
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result.assert_outcomes(failed=2)
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result.stdout.fnmatch_lines(
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[
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"FAILED test_stepwise_skip_is_independent.py::test_one - assert False",
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"FAILED test_stepwise_skip_is_independent.py::test_two - assert False",
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"*Interrupted: Test failed, continuing from this test next run.*",
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]
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)
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def test_sw_skip_help(pytester: Pytester) -> None:
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result = pytester.runpytest("-h")
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result.stdout.fnmatch_lines("*Implicitly enables --stepwise.")
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