Feature: Step definitions parameters conversion

There is possibility to pass argument converters which may be useful if you need to postprocess step arguments after the parser.

Background:

• Given File “Example.feature” with content:

  Feature:
    Scenario:
      Given I have a cucumber
  

Scenario: for non-anonymous groups

• Given File “conftest.py” with content:

  from enum import Enum
  from pytest_bdd import given
  from re import compile as parse
  
  class Item(Enum):
    CUCUMBER = 'cucumber'
  
  @given(parse(r"I have a (?P<item>\w+)"), converters=dict(item=Item))
  def i_have_item(item):
      assert item == Item.CUCUMBER
  

• When run pytest

• Then pytest outcome must contain tests with statuses:

  passed
  1

Rule: for anonymous groups

Step definitions parameters could not have a name, so we have to name them before conversion

Scenario: anonymous group parameter conversion with named mapping

• Given File “conftest.py” with content:

  from enum import Enum
  from pytest_bdd import given
  from re import compile as parse
  
  class Item(Enum):
    CUCUMBER = 'cucumber'
  
  @given(
    parse(r"I have a (\w+)"),
    anonymous_group_names=('item',),
    converters=dict(item=Item)
  )
  def i_have_item(item):
      assert item == Item.CUCUMBER
  

• When run pytest

• Then pytest outcome must contain tests with statuses:

  passed
  1

Scenario: cucumber expressions parameter conversion

• Given File “conftest.py” with content:

  from enum import Enum
  from pytest_bdd import given
  from functools import partial
  from cucumber_expressions.expression import CucumberExpression
  from cucumber_expressions.parameter_type_registry import ParameterTypeRegistry
  
  parse = partial(
    CucumberExpression,
    parameter_type_registry = ParameterTypeRegistry()
  )
  
  class Item(Enum):
    CUCUMBER = 'cucumber'
  
  @given(
    parse(r"I have a {word}"),
    anonymous_group_names=('item',),
    converters=dict(item=Item)
  )
  def i_have_item(item):
      assert item == Item.CUCUMBER
  

• When run pytest

• Then pytest outcome must contain tests with statuses:

  passed
  1