How to use plain_tb_formatter method in Testify

Best Python code snippet using Testify_python

test_result.py

Source:test_result.py

...19import traceback20import six21from testify.utils import inspection22__testify = 123def plain_tb_formatter(etype, value, tb, length=None):24    # We want our formatters to return a string.25    return ''.join(traceback.format_exception(etype, value, tb, length))26class TestResult(object):27    debug = False28    def __init__(self, test_method, runner_id=None):29        super(TestResult, self).__init__()30        self.test_method = test_method31        self.test_method_name = test_method.__name__32        self.success = self.failure = self.error = self.interrupted = None33        self.run_time = self.start_time = self.end_time = None34        self.exception_infos = []35        self.complete = False36        self.previous_run = None37        self.runner_id = runner_id38    @property39    def exception_info(self):40        raise AttributeError(41            'The exception_info attribute has been replaced with the .exception_infos list. Please update your code.',42        )43    def start(self, previous_run=None):44        self.previous_run = previous_run45        self.start_time = datetime.datetime.now()46    def record(self, function):47        """Excerpted code for executing a block of code that might raise an48        exception, requiring us to update a result object.49        Return value is a boolean describing whether the block was successfully50        executed without exceptions.51        """52        try:53            function()54        except BaseException as exception:55            # some code may want to use an alternative exc_info for an exception56            # (for instance, in an event loop). You can signal an alternative57            # stack to use by adding a _testify_exc_tb attribute to the58            # exception object59            if hasattr(exception, '_testify_exc_tb'):60                exc_info = (type(exception), exception, exception._testify_exc_tb)61            else:62                exc_info = sys.exc_info()63            self.end_in_failure(exc_info)64            if self.debug:65                self._postmortem(exc_info)66            return False67        else:68            return True69    def _postmortem(self, exc_info):70        _, _, traceback = exc_info71        print("\nDEBUGGER")72        print(self.format_exception_info())73        try:74            detected_postmortem_tool = __import__('ipdb').post_mortem75        except ImportError:76            detected_postmortem_tool = __import__('pdb').post_mortem77        detected_postmortem_tool(traceback)78    def _complete(self):79        self.complete = True80        self.end_time = datetime.datetime.now()81        self.run_time = self.end_time - self.start_time82    def end_in_failure(self, exception_info):83        if not self.complete:84            self._complete()85        self.success = False86        if isinstance(exception_info[1], AssertionError):87            # test failure, kinda expect these vs. unknown errors88            self.failure = True89        elif isinstance(exception_info[1], KeyboardInterrupt):90            self.interrupted = True91        else:92            self.error = True93        self.exception_infos.append(exception_info)94    def end_in_success(self):95        if not self.complete:96            self._complete()97            self.success = True98    def __make_multi_error_message(self, formatter):99        result = []100        for exception_info in self.exception_infos:101            exctype, value, tb = exception_info102            part = formatter(exctype, value, tb)103            result.append(part)104        if len(result) == 1:105            return result[0]106        else:107            # Meant to match the python3 multiple-exception support:108            #   http://docs.python.org/3.1/reference/simple_stmts.html#the-raise-statement109            return '\nDuring handling of the above exception, another exception occurred:\n\n'.join(result)110    def format_exception_info(self, pretty=False):111        if not self.exception_infos:112            return None113        def is_relevant_tb_level(tb):114            if '__testify' in tb.tb_frame.f_globals:115                # nobody *wants* to read testify116                return False117            else:118                return True119        def count_relevant_tb_levels(tb):120            # count up to the *innermost* relevant frame121            length = 0122            relevant = 0123            while tb:124                length += 1125                if is_relevant_tb_level(tb):126                    relevant = length127                tb = tb.tb_next128            return relevant129        def formatter(exctype, value, tb):130            # Skip test runner traceback levels at the top.131            while tb and not is_relevant_tb_level(tb):132                tb = tb.tb_next133            if exctype is AssertionError:134                # Skip testify.assertions traceback levels at the bottom.135                length = count_relevant_tb_levels(tb)136                return plain_tb_formatter(exctype, value, tb, length)137            elif not tb:138                return "Exception: %r (%r)" % (exctype, value)139            else:140                return plain_tb_formatter(exctype, value, tb)141        return self.__make_multi_error_message(formatter)142    def format_exception_only(self):143        def formatter(exctype, value, tb):144            return ''.join(traceback.format_exception_only(exctype, value))145        return self.__make_multi_error_message(formatter)146    def to_dict(self):147        test_method_self_t = type(six.get_method_self(self.test_method))148        assert not isinstance(test_method_self_t, type(None))149        return {150            'previous_run': self.previous_run,151            'start_time': time.mktime(self.start_time.timetuple()) if self.start_time else None,152            'end_time': time.mktime(self.end_time.timetuple()) if self.end_time else None,153            'run_time': (154                self.run_time.seconds + float(self.run_time.microseconds) / 1000000...

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