Method from_method

scrapy/contracts/__init__.py:137–172

(
        self, method: Callable[..., Any], results: TestResult
    )

        return requests

    def from_method(
        self, method: Callable[..., Any], results: TestResult
    ) -> Request | None:
        contracts = self.extract_contracts(method)
        if contracts:
            request_cls = Request
            for contract in contracts:
                if contract.request_cls is not None:
                    request_cls = contract.request_cls

            # calculate request args
            args, kwargs = get_spec(request_cls.__init__)

            # Don't filter requests to allow
            # testing different callbacks on the same URL.
            kwargs["dont_filter"] = True
            kwargs["callback"] = method

            for contract in contracts:
                kwargs = contract.adjust_request_args(kwargs)

            args.remove("self")

            # check if all positional arguments are defined in kwargs
            if set(args).issubset(set(kwargs)):
                request = request_cls(**kwargs)

                # execute pre and post hooks in order
                for contract in reversed(contracts):
                    request = contract.add_pre_hook(request, results)
                for contract in contracts:
                    request = contract.add_post_hook(request, results)

                self._clean_req(request, method, results)
                return request
        return None

    def _clean_req(
        self, request: Request, method: Callable[..., Any], results: TestResult