Function test_capturing_and_logging_fundamentals

testing/test_capture.py:1459–1496

(pytester: Pytester, method: str)

    "method", ["SysCapture(2)", "SysCapture(2, tee=True)", "FDCapture(2)"]
)
def test_capturing_and_logging_fundamentals(pytester: Pytester, method: str) -> None:
    # here we check a fundamental feature
    p = pytester.makepyfile(
        f"""
        import sys, os, logging
        from _pytest import capture
        cap = capture.MultiCapture(
            in_=None,
            out=None,
            err=capture.{method},
        )
        cap.start_capturing()

        logging.warning("hello1")
        outerr = cap.readouterr()
        print("suspend, captured %s" %(outerr,))
        logging.warning("hello2")

        cap.pop_outerr_to_orig()
        logging.warning("hello3")

        outerr = cap.readouterr()
        print("suspend2, captured %s" % (outerr,))
    """
    )
    result = pytester.runpython(p)
    result.stdout.fnmatch_lines(
        """
        suspend, captured*hello1*
        suspend2, captured*WARNING:root:hello3*
    """
    )
    result.stderr.fnmatch_lines(
        """
        WARNING:root:hello2
    """
    )
    assert "atexit" not in result.stderr.str()


def test_error_attribute_issue555(pytester: Pytester) -> None: