Feature: Step definitions parameters could have default values
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Scenario:
         

-  Given File "Example.feature" with content:

   .. code:: gherkin

      Feature:
        Scenario:
          Given I have a cucumber
          Given I have a rotten cucumber
          Given I have a fresh cucumber
          Given I have a pickle

-  Given File "conftest.py" with content:

   .. code:: python

      from enum import Enum
      from re import compile as parse
      from pytest import fixture
      from pytest_bdd import given

      class Freshness(Enum):
        FRESH = 'fresh'
        ROTTEN = 'rotten'
        SALTED = 'salted'

      @fixture
      def oracle_freshness():
        return [Freshness.FRESH, Freshness.ROTTEN, Freshness.FRESH, Freshness.SALTED]

      @given("I have a pickle", param_defaults=dict(freshness=Freshness.SALTED))
      @given(
        parse(r"I have a ((?P<freshness>\w+)\s)?cucumber"),
        converters=dict(freshness=Freshness),
        param_defaults=dict(freshness=Freshness.FRESH)
      )
      def i_have_cucumber(freshness, oracle_freshness):
          assert freshness == oracle_freshness.pop(0)

-  When run pytest

-  Then pytest outcome must contain tests with statuses:

   +--------+
   | passed |
   +========+
   | 1      |
   +--------+