import io import os import re from typing import cast import pytest from _pytest.capture import CaptureManager from _pytest.config import ExitCode from _pytest.pytester import Testdir from _pytest.terminal import TerminalReporter def test_nothing_logged(testdir): testdir.makepyfile( """ import sys def test_foo(): sys.stdout.write('text going to stdout') sys.stderr.write('text going to stderr') assert False """ ) result = testdir.runpytest() assert result.ret == 1 result.stdout.fnmatch_lines(["*- Captured stdout call -*", "text going to stdout"]) result.stdout.fnmatch_lines(["*- Captured stderr call -*", "text going to stderr"]) with pytest.raises(pytest.fail.Exception): result.stdout.fnmatch_lines(["*- Captured *log call -*"]) def test_messages_logged(testdir): testdir.makepyfile( """ import sys import logging logger = logging.getLogger(__name__) def test_foo(): sys.stdout.write('text going to stdout') sys.stderr.write('text going to stderr') logger.info('text going to logger') assert False """ ) result = testdir.runpytest("--log-level=INFO") assert result.ret == 1 result.stdout.fnmatch_lines(["*- Captured *log call -*", "*text going to logger*"]) result.stdout.fnmatch_lines(["*- Captured stdout call -*", "text going to stdout"]) result.stdout.fnmatch_lines(["*- Captured stderr call -*", "text going to stderr"]) def test_root_logger_affected(testdir): testdir.makepyfile( """ import logging logger = logging.getLogger() def test_foo(): logger.info('info text ' + 'going to logger') logger.warning('warning text ' + 'going to logger') logger.error('error text ' + 'going to logger') assert 0 """ ) log_file = testdir.tmpdir.join("pytest.log").strpath result = testdir.runpytest("--log-level=ERROR", "--log-file=pytest.log") assert result.ret == 1 # The capture log calls in the stdout section only contain the # logger.error msg, because of --log-level=ERROR. result.stdout.fnmatch_lines(["*error text going to logger*"]) stdout = result.stdout.str() assert "warning text going to logger" not in stdout assert "info text going to logger" not in stdout # The log file should contain the warning and the error log messages and # not the info one, because the default level of the root logger is # WARNING. assert os.path.isfile(log_file) with open(log_file) as rfh: contents = rfh.read() assert "info text going to logger" not in contents assert "warning text going to logger" in contents assert "error text going to logger" in contents def test_log_cli_level_log_level_interaction(testdir): testdir.makepyfile( """ import logging logger = logging.getLogger() def test_foo(): logger.debug('debug text ' + 'going to logger') logger.info('info text ' + 'going to logger') logger.warning('warning text ' + 'going to logger') logger.error('error text ' + 'going to logger') assert 0 """ ) result = testdir.runpytest("--log-cli-level=INFO", "--log-level=ERROR") assert result.ret == 1 result.stdout.fnmatch_lines( [ "*-- live log call --*", "*INFO*info text going to logger", "*WARNING*warning text going to logger", "*ERROR*error text going to logger", "=* 1 failed in *=", ] ) result.stdout.no_re_match_line("DEBUG") def test_setup_logging(testdir): testdir.makepyfile( """ import logging logger = logging.getLogger(__name__) def setup_function(function): logger.info('text going to logger from setup') def test_foo(): logger.info('text going to logger from call') assert False """ ) result = testdir.runpytest("--log-level=INFO") assert result.ret == 1 result.stdout.fnmatch_lines( [ "*- Captured *log setup -*", "*text going to logger from setup*", "*- Captured *log call -*", "*text going to logger from call*", ] ) def test_teardown_logging(testdir): testdir.makepyfile( """ import logging logger = logging.getLogger(__name__) def test_foo(): logger.info('text going to logger from call') def teardown_function(function): logger.info('text going to logger from teardown') assert False """ ) result = testdir.runpytest("--log-level=INFO") assert result.ret == 1 result.stdout.fnmatch_lines( [ "*- Captured *log call -*", "*text going to logger from call*", "*- Captured *log teardown -*", "*text going to logger from teardown*", ] ) @pytest.mark.parametrize("enabled", [True, False]) def test_log_cli_enabled_disabled(testdir, enabled): msg = "critical message logged by test" testdir.makepyfile( """ import logging def test_log_cli(): logging.critical("{}") """.format( msg ) ) if enabled: testdir.makeini( """ [pytest] log_cli=true """ ) result = testdir.runpytest() if enabled: result.stdout.fnmatch_lines( [ "test_log_cli_enabled_disabled.py::test_log_cli ", "*-- live log call --*", "CRITICAL *test_log_cli_enabled_disabled.py* critical message logged by test", "PASSED*", ] ) else: assert msg not in result.stdout.str() def test_log_cli_default_level(testdir): # Default log file level testdir.makepyfile( """ import pytest import logging def test_log_cli(request): plugin = request.config.pluginmanager.getplugin('logging-plugin') assert plugin.log_cli_handler.level == logging.NOTSET logging.getLogger('catchlog').info("INFO message won't be shown") logging.getLogger('catchlog').warning("WARNING message will be shown") """ ) testdir.makeini( """ [pytest] log_cli=true """ ) result = testdir.runpytest() # fnmatch_lines does an assertion internally result.stdout.fnmatch_lines( [ "test_log_cli_default_level.py::test_log_cli ", "WARNING*test_log_cli_default_level.py* message will be shown*", ] ) result.stdout.no_fnmatch_line("*INFO message won't be shown*") # make sure that that we get a '0' exit code for the testsuite assert result.ret == 0 def test_log_cli_default_level_multiple_tests(testdir, request): """Ensure we reset the first newline added by the live logger between tests""" filename = request.node.name + ".py" testdir.makepyfile( """ import logging def test_log_1(): logging.warning("log message from test_log_1") def test_log_2(): logging.warning("log message from test_log_2") """ ) testdir.makeini( """ [pytest] log_cli=true """ ) result = testdir.runpytest() result.stdout.fnmatch_lines( [ "{}::test_log_1 ".format(filename), "*WARNING*log message from test_log_1*", "PASSED *50%*", "{}::test_log_2 ".format(filename), "*WARNING*log message from test_log_2*", "PASSED *100%*", "=* 2 passed in *=", ] ) def test_log_cli_default_level_sections(testdir, request): """Check that with live logging enable we are printing the correct headers during start/setup/call/teardown/finish.""" filename = request.node.name + ".py" testdir.makeconftest( """ import pytest import logging def pytest_runtest_logstart(): logging.warning('>>>>> START >>>>>') def pytest_runtest_logfinish(): logging.warning('<<<<< END <<<<<<<') """ ) testdir.makepyfile( """ import pytest import logging @pytest.fixture def fix(request): logging.warning("log message from setup of {}".format(request.node.name)) yield logging.warning("log message from teardown of {}".format(request.node.name)) def test_log_1(fix): logging.warning("log message from test_log_1") def test_log_2(fix): logging.warning("log message from test_log_2") """ ) testdir.makeini( """ [pytest] log_cli=true """ ) result = testdir.runpytest() result.stdout.fnmatch_lines( [ "{}::test_log_1 ".format(filename), "*-- live log start --*", "*WARNING* >>>>> START >>>>>*", "*-- live log setup --*", "*WARNING*log message from setup of test_log_1*", "*-- live log call --*", "*WARNING*log message from test_log_1*", "PASSED *50%*", "*-- live log teardown --*", "*WARNING*log message from teardown of test_log_1*", "*-- live log finish --*", "*WARNING* <<<<< END <<<<<<<*", "{}::test_log_2 ".format(filename), "*-- live log start --*", "*WARNING* >>>>> START >>>>>*", "*-- live log setup --*", "*WARNING*log message from setup of test_log_2*", "*-- live log call --*", "*WARNING*log message from test_log_2*", "PASSED *100%*", "*-- live log teardown --*", "*WARNING*log message from teardown of test_log_2*", "*-- live log finish --*", "*WARNING* <<<<< END <<<<<<<*", "=* 2 passed in *=", ] ) def test_live_logs_unknown_sections(testdir, request): """Check that with live logging enable we are printing the correct headers during start/setup/call/teardown/finish.""" filename = request.node.name + ".py" testdir.makeconftest( """ import pytest import logging def pytest_runtest_protocol(item, nextitem): logging.warning('Unknown Section!') def pytest_runtest_logstart(): logging.warning('>>>>> START >>>>>') def pytest_runtest_logfinish(): logging.warning('<<<<< END <<<<<<<') """ ) testdir.makepyfile( """ import pytest import logging @pytest.fixture def fix(request): logging.warning("log message from setup of {}".format(request.node.name)) yield logging.warning("log message from teardown of {}".format(request.node.name)) def test_log_1(fix): logging.warning("log message from test_log_1") """ ) testdir.makeini( """ [pytest] log_cli=true """ ) result = testdir.runpytest() result.stdout.fnmatch_lines( [ "*WARNING*Unknown Section*", "{}::test_log_1 ".format(filename), "*WARNING* >>>>> START >>>>>*", "*-- live log setup --*", "*WARNING*log message from setup of test_log_1*", "*-- live log call --*", "*WARNING*log message from test_log_1*", "PASSED *100%*", "*-- live log teardown --*", "*WARNING*log message from teardown of test_log_1*", "*WARNING* <<<<< END <<<<<<<*", "=* 1 passed in *=", ] ) def test_sections_single_new_line_after_test_outcome(testdir, request): """Check that only a single new line is written between log messages during teardown/finish.""" filename = request.node.name + ".py" testdir.makeconftest( """ import pytest import logging def pytest_runtest_logstart(): logging.warning('>>>>> START >>>>>') def pytest_runtest_logfinish(): logging.warning('<<<<< END <<<<<<<') logging.warning('<<<<< END <<<<<<<') """ ) testdir.makepyfile( """ import pytest import logging @pytest.fixture def fix(request): logging.warning("log message from setup of {}".format(request.node.name)) yield logging.warning("log message from teardown of {}".format(request.node.name)) logging.warning("log message from teardown of {}".format(request.node.name)) def test_log_1(fix): logging.warning("log message from test_log_1") """ ) testdir.makeini( """ [pytest] log_cli=true """ ) result = testdir.runpytest() result.stdout.fnmatch_lines( [ "{}::test_log_1 ".format(filename), "*-- live log start --*", "*WARNING* >>>>> START >>>>>*", "*-- live log setup --*", "*WARNING*log message from setup of test_log_1*", "*-- live log call --*", "*WARNING*log message from test_log_1*", "PASSED *100%*", "*-- live log teardown --*", "*WARNING*log message from teardown of test_log_1*", "*-- live log finish --*", "*WARNING* <<<<< END <<<<<<<*", "*WARNING* <<<<< END <<<<<<<*", "=* 1 passed in *=", ] ) assert ( re.search( r"(.+)live log teardown(.+)\nWARNING(.+)\nWARNING(.+)", result.stdout.str(), re.MULTILINE, ) is not None ) assert ( re.search( r"(.+)live log finish(.+)\nWARNING(.+)\nWARNING(.+)", result.stdout.str(), re.MULTILINE, ) is not None ) def test_log_cli_level(testdir): # Default log file level testdir.makepyfile( """ import pytest import logging def test_log_cli(request): plugin = request.config.pluginmanager.getplugin('logging-plugin') assert plugin.log_cli_handler.level == logging.INFO logging.getLogger('catchlog').debug("This log message won't be shown") logging.getLogger('catchlog').info("This log message will be shown") print('PASSED') """ ) testdir.makeini( """ [pytest] log_cli=true """ ) result = testdir.runpytest("-s", "--log-cli-level=INFO") # fnmatch_lines does an assertion internally result.stdout.fnmatch_lines( [ "*test_log_cli_level.py*This log message will be shown", "PASSED", # 'PASSED' on its own line because the log message prints a new line ] ) result.stdout.no_fnmatch_line("*This log message won't be shown*") # make sure that that we get a '0' exit code for the testsuite assert result.ret == 0 result = testdir.runpytest("-s", "--log-level=INFO") # fnmatch_lines does an assertion internally result.stdout.fnmatch_lines( [ "*test_log_cli_level.py* This log message will be shown", "PASSED", # 'PASSED' on its own line because the log message prints a new line ] ) result.stdout.no_fnmatch_line("*This log message won't be shown*") # make sure that that we get a '0' exit code for the testsuite assert result.ret == 0 def test_log_cli_ini_level(testdir): testdir.makeini( """ [pytest] log_cli=true log_cli_level = INFO """ ) testdir.makepyfile( """ import pytest import logging def test_log_cli(request): plugin = request.config.pluginmanager.getplugin('logging-plugin') assert plugin.log_cli_handler.level == logging.INFO logging.getLogger('catchlog').debug("This log message won't be shown") logging.getLogger('catchlog').info("This log message will be shown") print('PASSED') """ ) result = testdir.runpytest("-s") # fnmatch_lines does an assertion internally result.stdout.fnmatch_lines( [ "*test_log_cli_ini_level.py* This log message will be shown", "PASSED", # 'PASSED' on its own line because the log message prints a new line ] ) result.stdout.no_fnmatch_line("*This log message won't be shown*") # make sure that that we get a '0' exit code for the testsuite assert result.ret == 0 @pytest.mark.parametrize( "cli_args", ["", "--log-level=WARNING", "--log-file-level=WARNING", "--log-cli-level=WARNING"], ) def test_log_cli_auto_enable(testdir, cli_args): """Check that live logs are enabled if --log-level or --log-cli-level is passed on the CLI. It should not be auto enabled if the same configs are set on the INI file. """ testdir.makepyfile( """ import logging def test_log_1(): logging.info("log message from test_log_1 not to be shown") logging.warning("log message from test_log_1") """ ) testdir.makeini( """ [pytest] log_level=INFO log_cli_level=INFO """ ) result = testdir.runpytest(cli_args) stdout = result.stdout.str() if cli_args == "--log-cli-level=WARNING": result.stdout.fnmatch_lines( [ "*::test_log_1 ", "*-- live log call --*", "*WARNING*log message from test_log_1*", "PASSED *100%*", "=* 1 passed in *=", ] ) assert "INFO" not in stdout else: result.stdout.fnmatch_lines( ["*test_log_cli_auto_enable*100%*", "=* 1 passed in *="] ) assert "INFO" not in stdout assert "WARNING" not in stdout def test_log_file_cli(testdir): # Default log file level testdir.makepyfile( """ import pytest import logging def test_log_file(request): plugin = request.config.pluginmanager.getplugin('logging-plugin') assert plugin.log_file_handler.level == logging.WARNING logging.getLogger('catchlog').info("This log message won't be shown") logging.getLogger('catchlog').warning("This log message will be shown") print('PASSED') """ ) log_file = testdir.tmpdir.join("pytest.log").strpath result = testdir.runpytest( "-s", "--log-file={}".format(log_file), "--log-file-level=WARNING" ) # fnmatch_lines does an assertion internally result.stdout.fnmatch_lines(["test_log_file_cli.py PASSED"]) # make sure that that we get a '0' exit code for the testsuite assert result.ret == 0 assert os.path.isfile(log_file) with open(log_file) as rfh: contents = rfh.read() assert "This log message will be shown" in contents assert "This log message won't be shown" not in contents def test_log_file_cli_level(testdir): # Default log file level testdir.makepyfile( """ import pytest import logging def test_log_file(request): plugin = request.config.pluginmanager.getplugin('logging-plugin') assert plugin.log_file_handler.level == logging.INFO logging.getLogger('catchlog').debug("This log message won't be shown") logging.getLogger('catchlog').info("This log message will be shown") print('PASSED') """ ) log_file = testdir.tmpdir.join("pytest.log").strpath result = testdir.runpytest( "-s", "--log-file={}".format(log_file), "--log-file-level=INFO" ) # fnmatch_lines does an assertion internally result.stdout.fnmatch_lines(["test_log_file_cli_level.py PASSED"]) # make sure that that we get a '0' exit code for the testsuite assert result.ret == 0 assert os.path.isfile(log_file) with open(log_file) as rfh: contents = rfh.read() assert "This log message will be shown" in contents assert "This log message won't be shown" not in contents def test_log_level_not_changed_by_default(testdir): testdir.makepyfile( """ import logging def test_log_file(): assert logging.getLogger().level == logging.WARNING """ ) result = testdir.runpytest("-s") result.stdout.fnmatch_lines(["* 1 passed in *"]) def test_log_file_ini(testdir): log_file = testdir.tmpdir.join("pytest.log").strpath testdir.makeini( """ [pytest] log_file={} log_file_level=WARNING """.format( log_file ) ) testdir.makepyfile( """ import pytest import logging def test_log_file(request): plugin = request.config.pluginmanager.getplugin('logging-plugin') assert plugin.log_file_handler.level == logging.WARNING logging.getLogger('catchlog').info("This log message won't be shown") logging.getLogger('catchlog').warning("This log message will be shown") print('PASSED') """ ) result = testdir.runpytest("-s") # fnmatch_lines does an assertion internally result.stdout.fnmatch_lines(["test_log_file_ini.py PASSED"]) # make sure that that we get a '0' exit code for the testsuite assert result.ret == 0 assert os.path.isfile(log_file) with open(log_file) as rfh: contents = rfh.read() assert "This log message will be shown" in contents assert "This log message won't be shown" not in contents def test_log_file_ini_level(testdir): log_file = testdir.tmpdir.join("pytest.log").strpath testdir.makeini( """ [pytest] log_file={} log_file_level = INFO """.format( log_file ) ) testdir.makepyfile( """ import pytest import logging def test_log_file(request): plugin = request.config.pluginmanager.getplugin('logging-plugin') assert plugin.log_file_handler.level == logging.INFO logging.getLogger('catchlog').debug("This log message won't be shown") logging.getLogger('catchlog').info("This log message will be shown") print('PASSED') """ ) result = testdir.runpytest("-s") # fnmatch_lines does an assertion internally result.stdout.fnmatch_lines(["test_log_file_ini_level.py PASSED"]) # make sure that that we get a '0' exit code for the testsuite assert result.ret == 0 assert os.path.isfile(log_file) with open(log_file) as rfh: contents = rfh.read() assert "This log message will be shown" in contents assert "This log message won't be shown" not in contents def test_log_file_unicode(testdir): log_file = testdir.tmpdir.join("pytest.log").strpath testdir.makeini( """ [pytest] log_file={} log_file_level = INFO """.format( log_file ) ) testdir.makepyfile( """\ import logging def test_log_file(): logging.getLogger('catchlog').info("Normal message") logging.getLogger('catchlog').info("├") logging.getLogger('catchlog').info("Another normal message") """ ) result = testdir.runpytest() # make sure that that we get a '0' exit code for the testsuite assert result.ret == 0 assert os.path.isfile(log_file) with open(log_file, encoding="utf-8") as rfh: contents = rfh.read() assert "Normal message" in contents assert "├" in contents assert "Another normal message" in contents @pytest.mark.parametrize("has_capture_manager", [True, False]) def test_live_logging_suspends_capture(has_capture_manager: bool, request) -> None: """Test that capture manager is suspended when we emitting messages for live logging. This tests the implementation calls instead of behavior because it is difficult/impossible to do it using ``testdir`` facilities because they do their own capturing. We parametrize the test to also make sure _LiveLoggingStreamHandler works correctly if no capture manager plugin is installed. """ import logging import contextlib from functools import partial from _pytest.logging import _LiveLoggingStreamHandler class MockCaptureManager: calls = [] @contextlib.contextmanager def global_and_fixture_disabled(self): self.calls.append("enter disabled") yield self.calls.append("exit disabled") class DummyTerminal(io.StringIO): def section(self, *args, **kwargs): pass out_file = cast(TerminalReporter, DummyTerminal()) capture_manager = ( cast(CaptureManager, MockCaptureManager()) if has_capture_manager else None ) handler = _LiveLoggingStreamHandler(out_file, capture_manager) handler.set_when("call") logger = logging.getLogger(__name__ + ".test_live_logging_suspends_capture") logger.addHandler(handler) request.addfinalizer(partial(logger.removeHandler, handler)) logger.critical("some message") if has_capture_manager: assert MockCaptureManager.calls == ["enter disabled", "exit disabled"] else: assert MockCaptureManager.calls == [] assert cast(io.StringIO, out_file).getvalue() == "\nsome message\n" def test_collection_live_logging(testdir): testdir.makepyfile( """ import logging logging.getLogger().info("Normal message") """ ) result = testdir.runpytest("--log-cli-level=INFO") result.stdout.fnmatch_lines( ["*--- live log collection ---*", "*Normal message*", "collected 0 items"] ) @pytest.mark.parametrize("verbose", ["", "-q", "-qq"]) def test_collection_collect_only_live_logging(testdir, verbose): testdir.makepyfile( """ def test_simple(): pass """ ) result = testdir.runpytest("--collect-only", "--log-cli-level=INFO", verbose) expected_lines = [] if not verbose: expected_lines.extend( [ "*collected 1 item*", "**", "*no tests ran*", ] ) elif verbose == "-q": result.stdout.no_fnmatch_line("*collected 1 item**") expected_lines.extend( [ "*test_collection_collect_only_live_logging.py::test_simple*", "no tests ran in [0-1].[0-9][0-9]s", ] ) elif verbose == "-qq": result.stdout.no_fnmatch_line("*collected 1 item**") expected_lines.extend(["*test_collection_collect_only_live_logging.py: 1*"]) result.stdout.fnmatch_lines(expected_lines) def test_collection_logging_to_file(testdir): log_file = testdir.tmpdir.join("pytest.log").strpath testdir.makeini( """ [pytest] log_file={} log_file_level = INFO """.format( log_file ) ) testdir.makepyfile( """ import logging logging.getLogger().info("Normal message") def test_simple(): logging.getLogger().debug("debug message in test_simple") logging.getLogger().info("info message in test_simple") """ ) result = testdir.runpytest() result.stdout.no_fnmatch_line("*--- live log collection ---*") assert result.ret == 0 assert os.path.isfile(log_file) with open(log_file, encoding="utf-8") as rfh: contents = rfh.read() assert "Normal message" in contents assert "debug message in test_simple" not in contents assert "info message in test_simple" in contents def test_log_in_hooks(testdir): log_file = testdir.tmpdir.join("pytest.log").strpath testdir.makeini( """ [pytest] log_file={} log_file_level = INFO log_cli=true """.format( log_file ) ) testdir.makeconftest( """ import logging def pytest_runtestloop(session): logging.info('runtestloop') def pytest_sessionstart(session): logging.info('sessionstart') def pytest_sessionfinish(session, exitstatus): logging.info('sessionfinish') """ ) result = testdir.runpytest() result.stdout.fnmatch_lines(["*sessionstart*", "*runtestloop*", "*sessionfinish*"]) with open(log_file) as rfh: contents = rfh.read() assert "sessionstart" in contents assert "runtestloop" in contents assert "sessionfinish" in contents def test_log_in_runtest_logreport(testdir): log_file = testdir.tmpdir.join("pytest.log").strpath testdir.makeini( """ [pytest] log_file={} log_file_level = INFO log_cli=true """.format( log_file ) ) testdir.makeconftest( """ import logging logger = logging.getLogger(__name__) def pytest_runtest_logreport(report): logger.info("logreport") """ ) testdir.makepyfile( """ def test_first(): assert True """ ) testdir.runpytest() with open(log_file) as rfh: contents = rfh.read() assert contents.count("logreport") == 3 def test_log_set_path(testdir): report_dir_base = testdir.tmpdir.strpath testdir.makeini( """ [pytest] log_file_level = DEBUG log_cli=true """ ) testdir.makeconftest( """ import os import pytest @pytest.hookimpl(hookwrapper=True, tryfirst=True) def pytest_runtest_setup(item): config = item.config logging_plugin = config.pluginmanager.get_plugin("logging-plugin") report_file = os.path.join({}, item._request.node.name) logging_plugin.set_log_path(report_file) yield """.format( repr(report_dir_base) ) ) testdir.makepyfile( """ import logging logger = logging.getLogger("testcase-logger") def test_first(): logger.info("message from test 1") assert True def test_second(): logger.debug("message from test 2") assert True """ ) testdir.runpytest() with open(os.path.join(report_dir_base, "test_first")) as rfh: content = rfh.read() assert "message from test 1" in content with open(os.path.join(report_dir_base, "test_second")) as rfh: content = rfh.read() assert "message from test 2" in content def test_colored_captured_log(testdir): """ Test that the level names of captured log messages of a failing test are colored. """ testdir.makepyfile( """ import logging logger = logging.getLogger(__name__) def test_foo(): logger.info('text going to logger from call') assert False """ ) result = testdir.runpytest("--log-level=INFO", "--color=yes") assert result.ret == 1 result.stdout.fnmatch_lines( [ "*-- Captured log call --*", "\x1b[32mINFO \x1b[0m*text going to logger from call", ] ) def test_colored_ansi_esc_caplogtext(testdir): """ Make sure that caplog.text does not contain ANSI escape sequences. """ testdir.makepyfile( """ import logging logger = logging.getLogger(__name__) def test_foo(caplog): logger.info('text going to logger from call') assert '\x1b' not in caplog.text """ ) result = testdir.runpytest("--log-level=INFO", "--color=yes") assert result.ret == 0 def test_logging_emit_error(testdir: Testdir) -> None: """ An exception raised during emit() should fail the test. The default behavior of logging is to print "Logging error" to stderr with the call stack and some extra details. pytest overrides this behavior to propagate the exception. """ testdir.makepyfile( """ import logging def test_bad_log(): logging.warning('oops', 'first', 2) """ ) result = testdir.runpytest() result.assert_outcomes(failed=1) result.stdout.fnmatch_lines( [ "====* FAILURES *====", "*not all arguments converted during string formatting*", ] ) def test_logging_emit_error_supressed(testdir: Testdir) -> None: """ If logging is configured to silently ignore errors, pytest doesn't propagate errors either. """ testdir.makepyfile( """ import logging def test_bad_log(monkeypatch): monkeypatch.setattr(logging, 'raiseExceptions', False) logging.warning('oops', 'first', 2) """ ) result = testdir.runpytest() result.assert_outcomes(passed=1) def test_log_file_cli_subdirectories_are_successfully_created(testdir): path = testdir.makepyfile(""" def test_logger(): pass """) expected = os.path.join(os.path.dirname(str(path)), "foo", "bar") result = testdir.runpytest("--log-file=foo/bar/logf.log") assert "logf.log" in os.listdir(expected) assert result.ret == ExitCode.OK