test_pdb.py 文件源码

def test_post_mortem():
    """Test post mortem traceback debugging.

    >>> def test_function_2():
    ...     try:
    ...         1/0
    ...     finally:
    ...         print('Exception!')

    >>> def test_function():
    ...     import pdb; pdb.Pdb(nosigint=True).set_trace()
    ...     test_function_2()
    ...     print('Not reached.')

    >>> with PdbTestInput([  # doctest: +ELLIPSIS, +NORMALIZE_WHITESPACE
    ...     'next',      # step over exception-raising call
    ...     'bt',        # get a backtrace
    ...     'list',      # list code of test_function()
    ...     'down',      # step into test_function_2()
    ...     'list',      # list code of test_function_2()
    ...     'continue',
    ... ]):
    ...    try:
    ...        test_function()
    ...    except ZeroDivisionError:
    ...        print('Correctly reraised.')
    > <doctest test.test_pdb.test_post_mortem[1]>(3)test_function()
    -> test_function_2()
    (Pdb) next
    Exception!
    ZeroDivisionError: division by zero
    > <doctest test.test_pdb.test_post_mortem[1]>(3)test_function()
    -> test_function_2()
    (Pdb) bt
    ...
      <doctest test.test_pdb.test_post_mortem[2]>(10)<module>()
    -> test_function()
    > <doctest test.test_pdb.test_post_mortem[1]>(3)test_function()
    -> test_function_2()
      <doctest test.test_pdb.test_post_mortem[0]>(3)test_function_2()
    -> 1/0
    (Pdb) list
      1         def test_function():
      2             import pdb; pdb.Pdb(nosigint=True).set_trace()
      3  ->         test_function_2()
      4             print('Not reached.')
    [EOF]
    (Pdb) down
    > <doctest test.test_pdb.test_post_mortem[0]>(3)test_function_2()
    -> 1/0
    (Pdb) list
      1         def test_function_2():
      2             try:
      3  >>             1/0
      4             finally:
      5  ->             print('Exception!')
    [EOF]
    (Pdb) continue
    Correctly reraised.
    """