Feature: Step definitions parameters parsing by custom parser

Scenario:

• Given File “Example.feature” with content:

  Feature:
    Scenario:
      Given there are 10 cucumbers
  

• Given File “conftest.py” with content:

  import re
  from pytest_bdd import given, parsers
  
  class Parser(parsers.StepParser):
      def __init__(self, name, *args,**kwargs):
          self.name = name
          self.regex = re.compile(
            re.sub("%(.+)%", r"(?P<\1>.+)", name),
            *args,
            **kwargs
          )
  
      def parse_arguments(self, request, name, **kwargs):
          __doc__ = "Parse step arguments"
          return self.regex.match(name).groupdict()
  
      @property
      def arguments(self):
          return [*self.regex.groupindex.keys()]
  
      def is_matching(self, request ,name):
          __doc__ = "Match given name with the step name."
          return bool(self.regex.match(name))
  
      def __str__(self):
        return self.name
  
  @given(
    Parser("there are %start% cucumbers"),
    target_fixture="start_cucumbers",
    converters=dict(start=int)
  )
  def start_cucumbers(start):
      assert start == 10
  

• When run pytest

• Then pytest outcome must contain tests with statuses:

  passed
  1