How to use _print_format_variables method in tavern

Best Python code snippet using tavern

error.py

Source:error.py

...30        except AttributeError:31            logger.warning("Unable to read stage variables - error output may be wrong")32            keys = self.item.global_cfg33        return keys34    def _print_format_variables(self, tw, code_lines):35        """Print a list of the format variables and their value at this stage36        If the format variable is not defined, print it in red as '???'37        Args:38            tw (TerminalWriter): Pytest TW instance39            code_lines (list(str)): Source lines for this stage40        Returns:41            list(str): List of all missing format variables42        """43        def read_formatted_vars(lines):44            """Go over all lines and try to find format variables"""45            for line in lines:46                for match in re.finditer(47                    r"(.*?:\s+!raw)?(?(1).*|.*?(?P<format_var>(?<!{){[^{]*?}))", line48                ):49                    if match.group("format_var") is not None:50                        yield match.group("format_var")51        format_variables = list(read_formatted_vars(code_lines))52        keys = self._get_available_format_keys()53        missing = []54        # Print out values of format variables, like Pytest prints out the55        # values of function call variables56        tw.line("Format variables:", white=True, bold=True)57        for var in format_variables:58            # Empty dict59            if re.match(r"^\s*{}\s*", var):60                continue61            # If it's valid json, it's not a format value62            try:63                json.loads(var)64            except json.JSONDecodeError:65                pass66            else:67                continue68            try:69                value_at_call = format_keys(var, keys)70            except exceptions.MissingFormatError:71                missing.append(var)72                value_at_call = "???"73                white = False74                red = True75            else:76                white = True77                red = False78            line = "  {} = '{}'".format(var[1:-1], value_at_call)79            tw.line(line, white=white, red=red)  # pragma: no cover80        return missing81    def _print_test_stage(82        self, tw, code_lines, missing_format_vars, line_start83    ):  # pylint: disable=no-self-use84        """Print the direct source lines from this test stage85        If we couldn't get the stage for some reason, print the entire test out.86        If there are any lines which have missing format variables, higlight87        them in red.88        Args:89            tw (Termin): Pytest TW instance90            code_lines (list(str)): Raw source for this stage91            missing_format_vars (list(str)): List of all missing format92                variables for this stage93            line_start (int): Source line of this stage94        """95        if line_start:96            tw.line(97                "Source test stage (line {}):".format(line_start), white=True, bold=True98            )99        else:100            tw.line("Source test stages:", white=True, bold=True)101        for line in code_lines:102            if any(i in line for i in missing_format_vars):103                tw.line(line, red=True)104            else:105                tw.line(line, white=True)106    def _print_formatted_stage(self, tw, stage):107        """Print the 'formatted' stage that Tavern will actually use to send the108        request/process the response109        Args:110            tw (TerminalWriter): Pytest TW instance111            stage (dict): The 'final' stage used by Tavern112        """113        tw.line("Formatted stage:", white=True, bold=True)114        # This will definitely exist115        formatted_lines = yaml.dump(stage, default_flow_style=False).split("\n")116        keys = self._get_available_format_keys()117        for line in formatted_lines:118            if not line:119                continue120            if "{}" not in line:121                line = format_keys(line, keys)122            tw.line("  {}".format(line), white=True)123    def _print_errors(self, tw):124        """Print any errors in the 'normal' Pytest style125        Args:126            tw (TerminalWriter): Pytest TW instance127        """128        tw.line("Errors:", white=True, bold=True)129        # Sort of hack, just use this to directly extract the exception format.130        # If this breaks in future, just re-implement it131        e = FormattedExcinfo()132        lines = e.get_exconly(self.exce)133        for line in lines:134            tw.line(line, red=True, bold=True)135    def toterminal(self, tw):136        """Print out a custom error message to the terminal"""137        # Try to get the stage so we can print it out. I'm not sure if the stage138        # will ever NOT be present, but better to check just in case139        try:140            # pylint: disable=protected-access141            stage = self.exce._excinfo[1].stage142        except AttributeError:143            stage = None144            # Fallback, we don't know which stage it is145            stages = self.item.spec["stages"]146            first_line = start_mark(stages[0]).line - 1147            last_line = end_mark(stages[-1]).line148            line_start = None149        else:150            first_line, last_line, line_start = get_stage_lines(stage)151        code_lines = list(read_relevant_lines(self.item.spec, first_line, last_line))152        missing_format_vars = self._print_format_variables(tw, code_lines)153        tw.line("")154        self._print_test_stage(tw, code_lines, missing_format_vars, line_start)155        tw.line("")156        if not stage:157            tw.line("Stage not found", red=True, bold=True)158        elif missing_format_vars:159            tw.line("Missing format vars for stage", red=True, bold=True)160        else:161            self._print_formatted_stage(tw, stage)162        tw.line("")163        self._print_errors(tw)164    @property165    def longreprtext(self):166        tw = py.io.TerminalWriter(stringio=True)  # pylint: disable=no-member...

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