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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 sys
from test import test_support
# This little helper class is essential for testing pdb under doctest.
from 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 write(x):
print x
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): write(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): write(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=['string*']).set_trace()
... string.lower('FOO')
>>> with PdbTestInput([
... 'step',
... 'continue',
... ]):
... skip_module()
> <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)
>>> 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 test_main():
from test import test_pdb
test_support.run_doctest(test_pdb, verbosity=True)
if __name__ == '__main__':
test_main()
|
