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|
# A test suite for pdb; not very comprehensive at the moment.
import imp
import sys
from test import support
# This little helper class is essential for testing pdb under doctest.
from test.test_doctest import _FakeInput
class PdbTestInput(object):
"""Context manager that makes testing Pdb in doctests easier."""
def __init__(self, input):
self.input = input
def __enter__(self):
self.real_stdin = sys.stdin
sys.stdin = _FakeInput(self.input)
def __exit__(self, *exc):
sys.stdin = self.real_stdin
def test_pdb_displayhook():
"""This tests the custom displayhook for pdb.
>>> def test_function(foo, bar):
... import pdb; pdb.Pdb().set_trace()
... pass
>>> with PdbTestInput([
... 'foo',
... 'bar',
... 'for i in range(5): print(i)',
... 'continue',
... ]):
... test_function(1, None)
> <doctest test.test_pdb.test_pdb_displayhook[0]>(3)test_function()
-> pass
(Pdb) foo
1
(Pdb) bar
(Pdb) for i in range(5): print(i)
0
1
2
3
4
(Pdb) continue
"""
def test_pdb_skip_modules():
"""This illustrates the simple case of module skipping.
>>> def skip_module():
... import string
... import pdb; pdb.Pdb(skip=['stri*']).set_trace()
... string.capwords('FOO')
>>> with PdbTestInput([
... 'step',
... 'continue',
... ]):
... skip_module()
> <doctest test.test_pdb.test_pdb_skip_modules[0]>(4)skip_module()
-> string.capwords('FOO')
(Pdb) step
--Return--
> <doctest test.test_pdb.test_pdb_skip_modules[0]>(4)skip_module()->None
-> string.capwords('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', 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)
>>> with PdbTestInput([
... 'step',
... 'step',
... 'step',
... 'step',
... 'step',
... 'continue',
... ]):
... skip_module()
... pass # provides something to "step" to
> <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[1]>(10)<module>()
-> pass # provides something to "step" to
(Pdb) continue
"""
def pdb_invoke(method, arg):
"""Run pdb.method(arg)."""
import pdb; getattr(pdb, method)(arg)
def test_pdb_run_with_incorrect_argument():
"""Testing run and runeval with incorrect first argument.
>>> pti = PdbTestInput(['continue',])
>>> with pti:
... pdb_invoke('run', lambda x: x)
Traceback (most recent call last):
TypeError: exec() arg 1 must be a string, bytes or code object
>>> with pti:
... pdb_invoke('runeval', lambda x: x)
Traceback (most recent call last):
TypeError: eval() arg 1 must be a string, bytes or code object
"""
def test_pdb_run_with_code_object():
"""Testing run and runeval with code object as a first argument.
>>> with PdbTestInput(['step','x', 'continue']):
... pdb_invoke('run', compile('x=1', '<string>', 'exec'))
> <string>(1)<module>()
(Pdb) step
--Return--
> <string>(1)<module>()->None
(Pdb) x
1
(Pdb) continue
>>> with PdbTestInput(['x', 'continue']):
... x=0
... pdb_invoke('runeval', compile('x+1', '<string>', 'eval'))
> <string>(1)<module>()->None
(Pdb) x
1
(Pdb) continue
"""
def test_main():
from test import test_pdb
support.run_doctest(test_pdb, verbosity=True)
if __name__ == '__main__':
test_main()
|
