test_expr_render.py 文件源码

def test_syntax_warning():
    # exceed the 4 extra lines which are normally checked
    with pytest.warns(SyntaxWarning) as warning_checker:
        v = debug.format(
            abs(
                abs(
                    abs(
                        abs(
                            -1
                        )
                    )
                )
            )
        )
    assert len(warning_checker) == 1
    warning = warning_checker.list[0]
    print(warning.message)
    assert 'Error: unexpected EOF while parsing (test_expr_render.py' in str(warning.message)
    # check only the original code is included in the warning
    assert '-1\n"' in str(warning.message)
    s = re.sub(':\d{2,}', ':<line no>', str(v))
    assert (
        'tests/test_expr_render.py:<line no> test_syntax_warning\n    1 (int)'
    ) == s