cpython/Lib/test/test_pdb.py

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# A test suite for pdb; at the moment, this only validates skipping of
# specified test modules (RFE #5142).
import imp
import os
import sys
import doctest
import tempfile
from test import test_support
# This little helper class is essential for testing pdb under doctest.
from test_doctest import _FakeInput
def test_pdb_skip_modules():
"""This illustrates the simple case of module skipping.
>>> def skip_module():
... import string
... import pdb;pdb.Pdb(skip=['string*']).set_trace()
... string.lower('FOO')
>>> real_stdin = sys.stdin
>>> sys.stdin = _FakeInput([
... 'step',
... 'continue',
... ])
>>> try:
... skip_module()
... finally:
... sys.stdin = real_stdin
> <doctest test.test_pdb.test_pdb_skip_modules[0]>(4)skip_module()
-> string.lower('FOO')
(Pdb) step
--Return--
> <doctest test.test_pdb.test_pdb_skip_modules[0]>(4)skip_module()->None
-> string.lower('FOO')
(Pdb) continue
"""
# Module for testing skipping of module that makes a callback
mod = imp.new_module('module_to_skip')
exec 'def foo_pony(callback): x = 1; callback(); return None' in mod.__dict__
def test_pdb_skip_modules_with_callback():
"""This illustrates skipping of modules that call into other code.
>>> def skip_module():
... def callback():
... return None
... import pdb;pdb.Pdb(skip=['module_to_skip*']).set_trace()
... mod.foo_pony(callback)
>>> real_stdin = sys.stdin
>>> sys.stdin = _FakeInput([
... 'step',
... 'step',
... 'step',
... 'step',
... 'step',
... 'continue',
... ])
>>> try:
... skip_module()
... finally:
... sys.stdin = real_stdin
> <doctest test.test_pdb.test_pdb_skip_modules_with_callback[0]>(5)skip_module()
-> mod.foo_pony(callback)
(Pdb) step
--Call--
> <doctest test.test_pdb.test_pdb_skip_modules_with_callback[0]>(2)callback()
-> def callback():
(Pdb) step
> <doctest test.test_pdb.test_pdb_skip_modules_with_callback[0]>(3)callback()
-> return None
(Pdb) step
--Return--
> <doctest test.test_pdb.test_pdb_skip_modules_with_callback[0]>(3)callback()->None
-> return None
(Pdb) step
--Return--
> <doctest test.test_pdb.test_pdb_skip_modules_with_callback[0]>(5)skip_module()->None
-> mod.foo_pony(callback)
(Pdb) step
> <doctest test.test_pdb.test_pdb_skip_modules_with_callback[3]>(4)<module>()
-> sys.stdin = real_stdin
(Pdb) continue
"""
def test_main():
from test import test_pdb
test_support.run_doctest(test_pdb, verbosity=True)
if __name__ == '__main__':
test_main()