Python UselessLambdaDefinitionVisitor Examples

Example #1

File: test_useless_lambda.py Project: vertexes/wemake-python-styleguide

def test_correct_empty_lambda_definition(
    assert_errors,
    parse_ast_tree,
    inner_def,
    default_options,
):
    """Testing correct empty lambdas are not reported."""
    tree = parse_ast_tree(template.format('lambda', inner_def))

    visitor = UselessLambdaDefinitionVisitor(default_options, tree=tree)
    visitor.run()

    assert_errors(visitor, [])

Example #2

File: test_implicit_primitive.py Project: Silentsoul04/wps-light

def test_wrong_lambda(
    assert_errors,
    parse_ast_tree,
    code,
    default_options,
):
    """Testing that isinstance is callable with correct types."""
    tree = parse_ast_tree(code)

    visitor = UselessLambdaDefinitionVisitor(default_options, tree=tree)
    visitor.run()

    assert_errors(visitor, [ImplicitPrimitiveViolation])

Example #3

File: test_useless_lambda.py Project: vertexes/wemake-python-styleguide

def test_incorrect_lambda_definition(
    assert_errors,
    parse_ast_tree,
    lambda_def,
    call_def,
    default_options,
):
    """Testing useless lambdas are reported."""
    tree = parse_ast_tree(template.format(lambda_def, call_def))

    visitor = UselessLambdaDefinitionVisitor(default_options, tree=tree)
    visitor.run()

    assert_errors(visitor, [UselessLambdaViolation])