| #!/usr/bin/env python3 |
| # |
| # Copyright 2022 The Fuchsia Authors |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| import logging |
| import os |
| import unittest |
| |
| import mock |
| |
| from antlion import context |
| from antlion.libs.logging import log_stream |
| from antlion.libs.logging.log_stream import ( |
| AlsoToLogHandler, |
| InvalidStyleSetError, |
| LogStyles, |
| _LogStream, |
| ) |
| |
| |
| class TestClass(object): |
| """Dummy class for TestEvents""" |
| |
| def __init__(self): |
| self.test_name = self.test_case.__name__ |
| |
| def test_case(self): |
| """Dummy test case for test events.""" |
| |
| |
| class LogStreamTest(unittest.TestCase): |
| """Tests the _LogStream class in antlion.libs.logging.log_stream.""" |
| |
| @staticmethod |
| def patch(imported_name, *args, **kwargs): |
| return mock.patch( |
| f"antlion.libs.logging.log_stream.{imported_name}", *args, **kwargs |
| ) |
| |
| @classmethod |
| def setUpClass(cls): |
| # logging.log_path only exists if logger._setup_test_logger is called. |
| # Here we set it to a value that is likely to not exist so file IO is |
| # not executed (an error is raised instead of creating the file). |
| logging.log_path = "/f/a/i/l/p/a/t/h" |
| |
| def setUp(self): |
| log_stream._log_streams = dict() |
| |
| # __init__ |
| |
| @mock.patch("os.makedirs") |
| def test_init_adds_null_handler(self, *_): |
| """Tests that a NullHandler is added to the logger upon initialization. |
| This ensures that no log output is generated when a test class is not |
| running. |
| """ |
| debug_monolith_log = LogStyles.LOG_DEBUG | LogStyles.MONOLITH_LOG |
| with self.patch("MovableFileHandler"): |
| log = log_stream.create_logger( |
| self._testMethodName, log_styles=debug_monolith_log |
| ) |
| |
| self.assertTrue(isinstance(log.handlers[0], logging.NullHandler)) |
| |
| # __validate_style |
| |
| @mock.patch("os.makedirs") |
| def test_validate_styles_raises_when_same_location_set_multiple_times(self, *_): |
| """Tests that a style is invalid if it sets the same handler twice. |
| |
| If the error is NOT raised, then a LogStream can create a Logger that |
| has multiple LogHandlers trying to write to the same file. |
| """ |
| with self.assertRaises(InvalidStyleSetError) as catch: |
| log_stream.create_logger( |
| self._testMethodName, |
| log_styles=[ |
| LogStyles.LOG_DEBUG | LogStyles.MONOLITH_LOG, |
| LogStyles.LOG_DEBUG | LogStyles.MONOLITH_LOG, |
| ], |
| ) |
| self.assertTrue( |
| "has been set multiple" in catch.exception.args[0], |
| msg="__validate_styles did not raise the expected error message", |
| ) |
| |
| @mock.patch("os.makedirs") |
| def test_validate_styles_raises_when_multiple_file_outputs_set(self, *_): |
| """Tests that a style is invalid if more than one of MONOLITH_LOG, |
| TESTCLASS_LOG, and TESTCASE_LOG is set for the same log level. |
| |
| If the error is NOT raised, then a LogStream can create a Logger that |
| has multiple LogHandlers trying to write to the same file. |
| """ |
| with self.assertRaises(InvalidStyleSetError) as catch: |
| log_stream.create_logger( |
| self._testMethodName, |
| log_styles=[ |
| LogStyles.LOG_DEBUG | LogStyles.TESTCASE_LOG, |
| LogStyles.LOG_DEBUG | LogStyles.TESTCLASS_LOG, |
| ], |
| ) |
| self.assertTrue( |
| "More than one of" in catch.exception.args[0], |
| msg="__validate_styles did not raise the expected error message", |
| ) |
| |
| with self.assertRaises(InvalidStyleSetError) as catch: |
| log_stream.create_logger( |
| self._testMethodName, |
| log_styles=[ |
| LogStyles.LOG_DEBUG | LogStyles.TESTCASE_LOG, |
| LogStyles.LOG_DEBUG | LogStyles.MONOLITH_LOG, |
| ], |
| ) |
| self.assertTrue( |
| "More than one of" in catch.exception.args[0], |
| msg="__validate_styles did not raise the expected error message", |
| ) |
| |
| with self.assertRaises(InvalidStyleSetError) as catch: |
| log_stream.create_logger( |
| self._testMethodName, |
| log_styles=[ |
| LogStyles.LOG_DEBUG | LogStyles.TESTCASE_LOG, |
| LogStyles.LOG_DEBUG | LogStyles.TESTCLASS_LOG, |
| LogStyles.LOG_DEBUG | LogStyles.MONOLITH_LOG, |
| ], |
| ) |
| self.assertTrue( |
| "More than one of" in catch.exception.args[0], |
| msg="__validate_styles did not raise the expected error message", |
| ) |
| |
| @mock.patch("os.makedirs") |
| def test_validate_styles_raises_when_no_level_exists(self, *_): |
| """Tests that a style is invalid if it does not contain a log level. |
| |
| If the style does not contain a log level, then there is no way to |
| pass the information coming from the logger to the correct file. |
| """ |
| with self.assertRaises(InvalidStyleSetError) as catch: |
| log_stream.create_logger( |
| self._testMethodName, log_styles=[LogStyles.MONOLITH_LOG] |
| ) |
| |
| self.assertTrue( |
| "log level" in catch.exception.args[0], |
| msg="__validate_styles did not raise the expected error message", |
| ) |
| |
| @mock.patch("os.makedirs") |
| def test_validate_styles_raises_when_no_location_exists(self, *_): |
| """Tests that a style is invalid if it does not contain a log level. |
| |
| If the style does not contain a log level, then there is no way to |
| pass the information coming from the logger to the correct file. |
| """ |
| with self.assertRaises(InvalidStyleSetError) as catch: |
| log_stream.create_logger( |
| self._testMethodName, log_styles=[LogStyles.LOG_INFO] |
| ) |
| |
| self.assertTrue( |
| "log location" in catch.exception.args[0], |
| msg="__validate_styles did not raise the expected error message", |
| ) |
| |
| @mock.patch("os.makedirs") |
| def test_validate_styles_raises_when_rotate_logs_no_file_handler(self, *_): |
| """Tests that a LogStyle cannot set ROTATE_LOGS without *_LOG flag. |
| |
| If the LogStyle contains ROTATE_LOGS, it must be associated with a log |
| that is rotatable. TO_ACTS_LOG and TO_STDOUT are not rotatable logs, |
| since those are both controlled by another object/process. The user |
| must specify MONOLITHIC_LOG or TESTCASE_LOG. |
| """ |
| with self.assertRaises(InvalidStyleSetError) as catch: |
| log_stream.create_logger( |
| self._testMethodName, |
| # Added LOG_DEBUG here to prevent the no_level_exists raise from |
| # occurring. |
| log_styles=[LogStyles.LOG_DEBUG + LogStyles.ROTATE_LOGS], |
| ) |
| |
| self.assertTrue( |
| "log type" in catch.exception.args[0], |
| msg="__validate_styles did not raise the expected error message", |
| ) |
| |
| # __handle_style |
| |
| @mock.patch("os.makedirs") |
| def test_handle_style_to_acts_log_creates_handler(self, *_): |
| """Tests that using the flag TO_ACTS_LOG creates an AlsoToLogHandler.""" |
| info_acts_log = LogStyles.LOG_INFO + LogStyles.TO_ACTS_LOG |
| |
| log = log_stream.create_logger(self._testMethodName, log_styles=info_acts_log) |
| |
| self.assertTrue(isinstance(log.handlers[1], AlsoToLogHandler)) |
| |
| @mock.patch("os.makedirs") |
| def test_handle_style_to_acts_log_creates_handler_is_lowest_level(self, *_): |
| """Tests that using the flag TO_ACTS_LOG creates an AlsoToLogHandler |
| that is set to the lowest LogStyles level.""" |
| info_acts_log = LogStyles.LOG_DEBUG + LogStyles.LOG_INFO + LogStyles.TO_ACTS_LOG |
| |
| log = log_stream.create_logger(self._testMethodName, log_styles=info_acts_log) |
| |
| self.assertTrue(isinstance(log.handlers[1], AlsoToLogHandler)) |
| self.assertEqual(log.handlers[1].level, logging.DEBUG) |
| |
| @mock.patch("os.makedirs") |
| def test_handle_style_to_stdout_creates_stream_handler(self, *_): |
| """Tests that using the flag TO_STDOUT creates a StreamHandler.""" |
| info_acts_log = LogStyles.LOG_INFO + LogStyles.TO_STDOUT |
| |
| log = log_stream.create_logger(self._testMethodName, log_styles=info_acts_log) |
| |
| self.assertTrue(isinstance(log.handlers[1], logging.StreamHandler)) |
| |
| @mock.patch("os.makedirs") |
| def test_handle_style_creates_file_handler(self, *_): |
| """Tests handle_style creates a MovableFileHandler for the MONOLITH_LOG.""" |
| info_acts_log = LogStyles.LOG_INFO + LogStyles.MONOLITH_LOG |
| |
| expected = mock.MagicMock() |
| with self.patch("MovableFileHandler", return_value=expected): |
| log = log_stream.create_logger( |
| self._testMethodName, log_styles=info_acts_log |
| ) |
| |
| self.assertEqual(log.handlers[1], expected) |
| |
| @mock.patch("os.makedirs") |
| def test_handle_style_creates_rotating_file_handler(self, *_): |
| """Tests handle_style creates a MovableFileHandler for the ROTATE_LOGS.""" |
| info_acts_log = ( |
| LogStyles.LOG_INFO + LogStyles.ROTATE_LOGS + LogStyles.MONOLITH_LOG |
| ) |
| |
| expected = mock.MagicMock() |
| with self.patch("MovableRotatingFileHandler", return_value=expected): |
| log = log_stream.create_logger( |
| self._testMethodName, log_styles=info_acts_log |
| ) |
| |
| self.assertEqual(log.handlers[1], expected) |
| |
| # __create_rotating_file_handler |
| |
| def test_create_rotating_file_handler_does_what_it_says_it_does(self): |
| """Tests that __create_rotating_file_handler does exactly that.""" |
| expected = mock.MagicMock() |
| |
| with self.patch("MovableRotatingFileHandler", return_value=expected): |
| # Through name-mangling, this function is automatically renamed. See |
| # https://docs.python.org/3/tutorial/classes.html#private-variables |
| fh = _LogStream._LogStream__create_rotating_file_handler("") |
| |
| self.assertEqual( |
| expected, fh, "The function did not return a MovableRotatingFileHandler." |
| ) |
| |
| # __get_file_handler_creator |
| |
| def test_get_file_handler_creator_returns_rotating_file_handler(self): |
| """Tests the function returns a MovableRotatingFileHandler when the log_style |
| has LogStyle.ROTATE_LOGS.""" |
| expected = mock.MagicMock() |
| |
| with self.patch( |
| "_LogStream._LogStream__create_rotating_file_handler", return_value=expected |
| ): |
| # Through name-mangling, this function is automatically renamed. See |
| # https://docs.python.org/3/tutorial/classes.html#private-variables |
| fh_creator = _LogStream._LogStream__get_file_handler_creator( |
| LogStyles.ROTATE_LOGS |
| ) |
| |
| self.assertEqual( |
| expected, |
| fh_creator("/d/u/m/m/y/p/a/t/h"), |
| "The function did not return a MovableRotatingFileHandler.", |
| ) |
| |
| def test_get_file_handler_creator_returns_file_handler(self): |
| """Tests the function returns a MovableFileHandler when the log_style does NOT |
| have LogStyle.ROTATE_LOGS.""" |
| expected = mock.MagicMock() |
| |
| with self.patch("MovableFileHandler", return_value=expected): |
| # Through name-mangling, this function is automatically renamed. See |
| # https://docs.python.org/3/tutorial/classes.html#private-variables |
| handler = _LogStream._LogStream__get_file_handler_creator(LogStyles.NONE)() |
| |
| self.assertTrue(isinstance(handler, mock.Mock)) |
| |
| # __get_lowest_log_level |
| |
| def test_get_lowest_level_gets_lowest_level(self): |
| """Tests __get_lowest_level returns the lowest LogStyle level given.""" |
| level = _LogStream._LogStream__get_lowest_log_level(LogStyles.ALL_LEVELS) |
| self.assertEqual(level, LogStyles.LOG_DEBUG) |
| |
| # __get_current_output_dir |
| |
| @mock.patch("os.makedirs") |
| def test_get_current_output_dir_gets_correct_path(self, *_): |
| """Tests __get_current_output_dir gets the correct path from the context""" |
| info_monolith_log = LogStyles.LOG_INFO + LogStyles.MONOLITH_LOG |
| |
| base_path = "BASEPATH" |
| subcontext = "SUBCONTEXT" |
| with self.patch("MovableFileHandler"): |
| logstream = log_stream._LogStream( |
| self._testMethodName, |
| log_styles=info_monolith_log, |
| base_path=base_path, |
| subcontext=subcontext, |
| ) |
| |
| expected = os.path.join(base_path, subcontext) |
| self.assertEqual(logstream._LogStream__get_current_output_dir(), expected) |
| |
| # __create_handler |
| |
| @mock.patch("os.makedirs") |
| def test_create_handler_creates_handler_at_correct_path(self, *_): |
| """Tests that __create_handler calls the handler creator with the |
| correct absolute path to the log file. |
| """ |
| info_monolith_log = LogStyles.LOG_INFO + LogStyles.MONOLITH_LOG |
| base_path = "BASEPATH" |
| with self.patch("MovableFileHandler") as file_handler: |
| log_stream.create_logger( |
| self._testMethodName, log_styles=info_monolith_log, base_path=base_path |
| ) |
| expected = os.path.join(base_path, f"{self._testMethodName}_{'info'}.txt") |
| file_handler.assert_called_with(expected) |
| |
| # __remove_handler |
| |
| @mock.patch("os.makedirs") |
| def test_remove_handler_removes_a_handler(self, *_): |
| """Tests that __remove_handler removes the handler from the logger and |
| closes the handler. |
| """ |
| dummy_obj = mock.Mock() |
| dummy_obj.logger = mock.Mock() |
| handler = mock.Mock() |
| _LogStream._LogStream__remove_handler(dummy_obj, handler) |
| |
| self.assertTrue(dummy_obj.logger.removeHandler.called) |
| self.assertTrue(handler.close.called) |
| |
| # update_handlers |
| |
| @mock.patch("os.makedirs") |
| def test_update_handlers_updates_filehandler_target(self, _): |
| """Tests that update_handlers invokes the underlying |
| MovableFileHandler.set_file method on the correct path. |
| """ |
| info_testclass_log = LogStyles.LOG_INFO + LogStyles.TESTCLASS_LOG |
| file_name = "FILENAME" |
| with self.patch("MovableFileHandler"): |
| log = log_stream.create_logger( |
| self._testMethodName, log_styles=info_testclass_log |
| ) |
| handler = log.handlers[-1] |
| handler.baseFilename = file_name |
| stream = log_stream._log_streams[log.name] |
| stream._LogStream__get_current_output_dir = lambda: "BASEPATH/TestClass" |
| |
| stream.update_handlers(context.NewTestClassContextEvent()) |
| |
| handler.set_file.assert_called_with("BASEPATH/TestClass/FILENAME") |
| |
| # cleanup |
| |
| @mock.patch("os.makedirs") |
| def test_cleanup_removes_all_handlers(self, *_): |
| """Tests that cleanup removes all handlers in the logger, except |
| the NullHandler. |
| """ |
| info_testcase_log = LogStyles.LOG_INFO + LogStyles.MONOLITH_LOG |
| with self.patch("MovableFileHandler"): |
| log_stream.create_logger(self._testMethodName, log_styles=info_testcase_log) |
| |
| created_log_stream = log_stream._log_streams[self._testMethodName] |
| created_log_stream.cleanup() |
| |
| self.assertEqual(len(created_log_stream.logger.handlers), 1) |
| |
| |
| class LogStreamModuleTests(unittest.TestCase): |
| @classmethod |
| def setUpClass(cls): |
| # logging.log_path only exists if logger._setup_test_logger is called. |
| # Here we set it to a value that is likely to not exist so file IO is |
| # not executed (an error is raised instead of creating the file). |
| logging.log_path = "/f/a/i/l/p/a/t/h" |
| |
| def setUp(self): |
| log_stream._log_streams = {} |
| |
| # _update_handlers |
| |
| @staticmethod |
| def create_new_context_event(): |
| return context.NewContextEvent() |
| |
| def test_update_handlers_delegates_calls_to_log_streams(self): |
| """Tests _update_handlers calls update_handlers on each log_stream.""" |
| log_stream._log_streams = {"a": mock.Mock(), "b": mock.Mock()} |
| |
| log_stream._update_handlers(self.create_new_context_event()) |
| |
| self.assertTrue(log_stream._log_streams["a"].update_handlers.called) |
| self.assertTrue(log_stream._log_streams["b"].update_handlers.called) |
| |
| # _set_logger |
| |
| def test_set_logger_overwrites_previous_logger(self): |
| """Tests that calling set_logger overwrites the previous logger within |
| log_stream._log_streams. |
| """ |
| previous = mock.Mock() |
| log_stream._log_streams = {"a": previous} |
| expected = mock.Mock() |
| expected.name = "a" |
| log_stream._set_logger(expected) |
| |
| self.assertEqual(log_stream._log_streams["a"], expected) |
| |
| |
| if __name__ == "__main__": |
| unittest.main() |