| #!/usr/bin/env python3.4 |
| # |
| # Copyright 2016 - The Android Open Source Project |
| # |
| # 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. |
| |
| from future import standard_library |
| standard_library.install_aliases() |
| |
| import copy |
| import importlib |
| import inspect |
| import os |
| import pkgutil |
| import sys |
| |
| from acts import keys |
| from acts import logger |
| from acts import records |
| from acts import signals |
| from acts import utils |
| |
| |
| class USERError(Exception): |
| """Raised when a problem is caused by user mistake, e.g. wrong command, |
| misformatted config, test info, wrong test paths etc. |
| """ |
| |
| class TestRunner(object): |
| """The class that instantiates test classes, executes test cases, and |
| report results. |
| |
| Attributes: |
| self.test_run_info: A dictionary containing the information needed by |
| test classes for this test run, including params, |
| controllers, and other objects. All of these will |
| be passed to test classes. |
| self.test_configs: A dictionary that is the original test configuration |
| passed in by user. |
| self.id: A string that is the unique identifier of this test run. |
| self.log_path: A string representing the path of the dir under which |
| all logs from this test run should be written. |
| self.log: The logger object used throughout this test run. |
| self.controller_registry: A dictionary that holds the controller |
| objects used in a test run. |
| self.controller_destructors: A dictionary that holds the controller |
| distructors. Keys are controllers' names. |
| self.test_classes: A dictionary where we can look up the test classes |
| by name to instantiate. |
| self.run_list: A list of tuples specifying what tests to run. |
| self.results: The test result object used to record the results of |
| this test run. |
| self.running: A boolean signifies whether this test run is ongoing or |
| not. |
| """ |
| def __init__(self, test_configs, run_list): |
| self.test_run_info = {} |
| self.test_configs = test_configs |
| self.testbed_configs = self.test_configs[keys.Config.key_testbed.value] |
| self.testbed_name = self.testbed_configs[keys.Config.key_testbed_name.value] |
| start_time = logger.get_log_file_timestamp() |
| self.id = "{}@{}".format(self.testbed_name, start_time) |
| # log_path should be set before parsing configs. |
| l_path = os.path.join(self.test_configs[keys.Config.key_log_path.value], |
| self.testbed_name, |
| start_time) |
| self.log_path = os.path.abspath(l_path) |
| self.log = logger.get_test_logger(self.log_path, |
| self.id, |
| self.testbed_name) |
| self.controller_registry = {} |
| self.controller_destructors = {} |
| self.run_list = run_list |
| self.results = records.TestResult() |
| self.running = False |
| |
| def import_test_modules(self, test_paths): |
| """Imports test classes from test scripts. |
| |
| 1. Locate all .py files under test paths. |
| 2. Import the .py files as modules. |
| 3. Find the module members that are test classes. |
| 4. Categorize the test classes by name. |
| |
| Args: |
| test_paths: A list of directory paths where the test files reside. |
| |
| Returns: |
| A dictionary where keys are test class name strings, values are |
| actual test classes that can be instantiated. |
| """ |
| def is_testfile_name(name, ext): |
| if ext == ".py": |
| if name.endswith("Test") or name.endswith("_test"): |
| return True |
| return False |
| file_list = utils.find_files(test_paths, is_testfile_name) |
| test_classes = {} |
| for path, name, _ in file_list: |
| sys.path.append(path) |
| try: |
| module = importlib.import_module(name) |
| except: |
| for test_cls_name, _ in self.run_list: |
| alt_name = name.replace('_', '').lower() |
| alt_cls_name = test_cls_name.lower() |
| # Only block if a test class on the run list causes an |
| # import error. We need to check against both naming |
| # conventions: AaaBbb and aaa_bbb. |
| if name == test_cls_name or alt_name == alt_cls_name: |
| msg = ("Encountered error importing test class %s, " |
| "abort.") % test_cls_name |
| # This exception is logged here to help with debugging |
| # under py2, because "raise X from Y" syntax is only |
| # supported under py3. |
| self.log.exception(msg) |
| raise USERError(msg) |
| continue |
| for member_name in dir(module): |
| if not member_name.startswith("__"): |
| if member_name.endswith("Test"): |
| test_class = getattr(module, member_name) |
| if inspect.isclass(test_class): |
| test_classes[member_name] = test_class |
| return test_classes |
| |
| @staticmethod |
| def verify_controller_module(module): |
| """Verifies a module object follows the required interface for |
| controllers. |
| |
| Args: |
| module: An object that is a controller module. This is usually |
| imported with import statements or loaded by importlib. |
| |
| Raises: |
| ControllerError is raised if the module does not match the ACTS |
| controller interface, or one of the required members is null. |
| """ |
| required_attributes = ("create", |
| "destroy", |
| "ACTS_CONTROLLER_CONFIG_NAME") |
| for attr in required_attributes: |
| if not hasattr(module, attr): |
| raise signals.ControllerError(("Module %s missing required " |
| "controller module attribute %s.") % (module.__name__, |
| attr)) |
| if not getattr(module, attr): |
| raise signals.ControllerError(("Controller interface %s in %s " |
| "cannot be null.") % (attr, module.__name__)) |
| |
| def register_controller(self, module): |
| """Registers a controller module for a test run. |
| |
| This declares a controller dependency of this test class. If the target |
| module exists and matches the controller interface, the controller |
| module will be instantiated with corresponding configs in the test |
| config file. The module should be imported first. |
| |
| Params: |
| module: A module that follows the controller module interface. |
| |
| Returns: |
| A list of controller objects instantiated from controller_module. |
| |
| Raises: |
| ControllerError is raised if no corresponding config can be found, |
| or if the controller module has already been registered. |
| """ |
| TestRunner.verify_controller_module(module) |
| try: |
| # If this is a builtin controller module, use the default ref name. |
| module_ref_name = module.ACTS_CONTROLLER_REFERENCE_NAME |
| builtin = True |
| except AttributeError: |
| # Or use the module's name |
| builtin = False |
| module_ref_name = module.__name__.split('.')[-1] |
| if module_ref_name in self.controller_registry: |
| raise signals.ControllerError(("Controller module %s has already " |
| "been registered. It can not be " |
| "registered again." |
| ) % module_ref_name) |
| # Create controller objects. |
| create = module.create |
| module_config_name = module.ACTS_CONTROLLER_CONFIG_NAME |
| if module_config_name not in self.testbed_configs: |
| raise signals.ControllerError(("No corresponding config found for" |
| " %s") % module_config_name) |
| try: |
| # Make a deep copy of the config to pass to the controller module, |
| # in case the controller module modifies the config internally. |
| original_config = self.testbed_configs[module_config_name] |
| controller_config = copy.deepcopy(original_config) |
| objects = create(controller_config, self.log) |
| except: |
| self.log.exception(("Failed to initialize objects for controller " |
| "%s, abort!"), module_config_name) |
| raise |
| if not isinstance(objects, list): |
| raise ControllerError(("Controller module %s did not return a list" |
| " of objects, abort.") % module_ref_name) |
| self.controller_registry[module_ref_name] = objects |
| # TODO(angli): After all tests move to register_controller, stop |
| # tracking controller objs in test_run_info. |
| if builtin: |
| self.test_run_info[module_ref_name] = objects |
| self.log.debug("Found %d objects for controller %s", len(objects), |
| module_config_name) |
| destroy_func = module.destroy |
| self.controller_destructors[module_ref_name] = destroy_func |
| return objects |
| |
| def unregister_controllers(self): |
| """Destroy controller objects and clear internal registry. |
| |
| This will be called at the end of each TestRunner.run call. |
| """ |
| for name, destroy in self.controller_destructors.items(): |
| try: |
| self.log.debug("Destroying %s.", name) |
| destroy(self.controller_registry[name]) |
| except: |
| self.log.exception("Exception occurred destroying %s.", name) |
| self.controller_registry = {} |
| self.controller_destructors = {} |
| |
| def parse_config(self, test_configs): |
| """Parses the test configuration and unpacks objects and parameters |
| into a dictionary to be passed to test classes. |
| |
| Args: |
| test_configs: A json object representing the test configurations. |
| """ |
| self.test_run_info[keys.Config.ikey_testbed_name.value] = self.testbed_name |
| # Instantiate builtin controllers |
| for ctrl_name in keys.Config.builtin_controller_names.value: |
| if ctrl_name in self.testbed_configs: |
| module_name = keys.get_module_name(ctrl_name) |
| module = importlib.import_module("acts.controllers.%s" % |
| module_name) |
| self.register_controller(module) |
| # Unpack other params. |
| self.test_run_info["register_controller"] = self.register_controller |
| self.test_run_info[keys.Config.ikey_logpath.value] = self.log_path |
| self.test_run_info[keys.Config.ikey_logger.value] = self.log |
| cli_args = test_configs[keys.Config.ikey_cli_args.value] |
| self.test_run_info[keys.Config.ikey_cli_args.value] = cli_args |
| user_param_pairs = [] |
| for item in test_configs.items(): |
| if item[0] not in keys.Config.reserved_keys.value: |
| user_param_pairs.append(item) |
| self.test_run_info[keys.Config.ikey_user_param.value] = copy.deepcopy( |
| dict(user_param_pairs)) |
| |
| def set_test_util_logs(self, module=None): |
| """Sets the log object to each test util module. |
| |
| This recursively include all modules under acts.test_utils and sets the |
| main test logger to each module. |
| |
| Args: |
| module: A module under acts.test_utils. |
| """ |
| # Initial condition of recursion. |
| if not module: |
| module = importlib.import_module("acts.test_utils") |
| # Somehow pkgutil.walk_packages is not working for me. |
| # Using iter_modules for now. |
| pkg_iter = pkgutil.iter_modules(module.__path__, module.__name__ + '.') |
| for _, module_name, ispkg in pkg_iter: |
| m = importlib.import_module(module_name) |
| if ispkg: |
| self.set_test_util_logs(module=m) |
| else: |
| self.log.debug("Setting logger to test util module %s", |
| module_name) |
| setattr(m, "log", self.log) |
| |
| def run_test_class(self, test_cls_name, test_cases=None): |
| """Instantiates and executes a test class. |
| |
| If test_cases is None, the test cases listed by self.tests will be |
| executed instead. If self.tests is empty as well, no test case in this |
| test class will be executed. |
| |
| Args: |
| test_cls_name: Name of the test class to execute. |
| test_cases: List of test case names to execute within the class. |
| |
| Returns: |
| A tuple, with the number of cases passed at index 0, and the total |
| number of test cases at index 1. |
| """ |
| try: |
| test_cls = self.test_classes[test_cls_name] |
| except KeyError: |
| raise USERError(("Unable to locate class %s in any of the test " |
| "paths specified.") % test_cls_name) |
| |
| with test_cls(self.test_run_info) as test_cls_instance: |
| try: |
| cls_result = test_cls_instance.run(test_cases) |
| self.results += cls_result |
| except signals.TestAbortAll as e: |
| self.results += e.results |
| raise e |
| |
| def run(self): |
| """Executes test cases. |
| |
| This will instantiate controller and test classes, and execute test |
| classes. This can be called multiple times to repeatly execute the |
| requested test cases. |
| |
| A call to TestRunner.stop should eventually happen to conclude the life |
| cycle of a TestRunner. |
| """ |
| if not self.running: |
| self.running = True |
| # Initialize controller objects and pack appropriate objects/params |
| # to be passed to test class. |
| self.parse_config(self.test_configs) |
| t_configs = self.test_configs[keys.Config.key_test_paths.value] |
| self.test_classes = self.import_test_modules(t_configs) |
| self.log.debug("Executing run list %s.", self.run_list) |
| try: |
| for test_cls_name, test_case_names in self.run_list: |
| if not self.running: |
| break |
| if test_case_names: |
| self.log.debug("Executing test cases %s in test class %s.", |
| test_case_names, |
| test_cls_name) |
| else: |
| self.log.debug("Executing test class %s", test_cls_name) |
| try: |
| self.run_test_class(test_cls_name, test_case_names) |
| except signals.TestAbortAll as e: |
| self.log.warning(("Abort all subsequent test classes. Reason: " |
| "%s"), e) |
| raise |
| finally: |
| self.unregister_controllers() |
| |
| def stop(self): |
| """Releases resources from test run. Should always be called after |
| TestRunner.run finishes. |
| |
| This function concludes a test run and writes out a test report. |
| """ |
| if self.running: |
| msg = "\nSummary for test run %s: %s\n" % (self.id, |
| self.results.summary_str()) |
| self._write_results_json_str() |
| self.log.info(msg.strip()) |
| logger.kill_test_logger(self.log) |
| self.running = False |
| |
| def _write_results_json_str(self): |
| """Writes out a json file with the test result info for easy parsing. |
| |
| TODO(angli): This should be replaced by standard log record mechanism. |
| """ |
| path = os.path.join(self.log_path, "test_run_summary.json") |
| with open(path, 'w') as f: |
| f.write(self.results.json_str()) |
| |
| if __name__ == "__main__": |
| pass |
