cuke4behave

What is this.

There is a popular bdd library in python, Behave. Cucumber Expressions are areplacement for regexs in Gherkin codebases. in large swaths of Behave implementations. Cucumber also has a good language server and vscode extension. To support both, this library allows you to inject a new step matcher into Behave, for use with more modern Gherkin paradigms.

Installation

Pip:

pip install cuke4behave

Poetry:

poetry install cuke4behave

Usage

from cuke4behave import build_step_matcher


from behave import given, then, when
from behave.matchers import matcher_mapping, use_step_matcher

from cucumber_expressions.parameter_type import ParameterType
from cucumber_expressions.parameter_type_registry import ParameterTypeRegistry

from cuke4behave.step_matcher import build_step_matcher
from features.steps.helpers import Color, full_add

# Build a ParameterType and ParameterTypeRegistry
color_ptr = ParameterType(
    "color",
    "red|blue|orange|purple|brown",
    Color,
    lambda s: Color(s),
    use_for_snippets="",
    prefer_for_regexp_match=False,
)
ptr = ParameterTypeRegistry()
# do this as many times as necessary
ptr.define_parameter_type(color_ptr)

# step matcher to pass to behave
step_matcher = build_step_matcher(ptr)

# THIS IS IMPORTANT. Patch in the step matcher to behave
matcher_mapping["cucumber_expressions"] = step_matcher

use_step_matcher("cucumber_expressions")

`