Function _execute_step_function

src/pytest_bdd/scenario.py:200–249

Execute step function.

(
    request: FixtureRequest, scenario: Scenario, step: Step, context: StepFunctionContext
)

def _execute_step_function(
    request: FixtureRequest, scenario: Scenario, step: Step, context: StepFunctionContext
) -> None:
    """Execute step function."""
    __tracebackhide__ = True

    func_sig = signature(context.step_func)

    kw = {
        "request": request,
        "feature": scenario.feature,
        "scenario": scenario,
        "step": step,
        "step_func": context.step_func,
        "step_func_args": {},
    }
    request.config.hook.pytest_bdd_before_step(**kw)

    try:
        parsed_args = parse_step_arguments(step=step, context=context)

        # Filter out the arguments that are not in the function signature
        kwargs = {k: v for k, v in parsed_args.items() if k in func_sig.parameters}

        if STEP_ARGUMENT_DATATABLE in func_sig.parameters and step.datatable is not None:
            kwargs[STEP_ARGUMENT_DATATABLE] = step.datatable.raw()
        if STEP_ARGUMENT_DOCSTRING in func_sig.parameters and step.docstring is not None:
            kwargs[STEP_ARGUMENT_DOCSTRING] = step.docstring

        # Fill the missing arguments requesting the fixture values
        kwargs |= {
            arg: request.getfixturevalue(arg) for arg in get_required_args(context.step_func) if arg not in kwargs
        }

        kw["step_func_args"] = kwargs

        request.config.hook.pytest_bdd_before_step_call(**kw)

        # Execute the step as if it was a pytest fixture using `call_fixture_func`,
        # so that we can allow "yield" statements in it
        return_value = call_fixture_func(fixturefunc=context.step_func, request=request, kwargs=kwargs)

    except Exception as exception:
        request.config.hook.pytest_bdd_step_error(exception=exception, **kw)
        raise

    if context.target_fixture is not None:
        inject_fixture(request, context.target_fixture, return_value)

    request.config.hook.pytest_bdd_after_step(**kw)


def _execute_scenario(feature: Feature, scenario: Scenario, request: FixtureRequest) -> None: