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test_pdb.py
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test_pdb.py
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from __future__ import absolute_import, division, print_function
import sys
import platform
import _pytest._code
import pytest
def runpdb_and_get_report(testdir, source):
p = testdir.makepyfile(source)
result = testdir.runpytest_inprocess("--pdb", p)
reports = result.reprec.getreports("pytest_runtest_logreport")
assert len(reports) == 3, reports # setup/call/teardown
return reports[1]
@pytest.fixture
def custom_pdb_calls():
called = []
# install dummy debugger class and track which methods were called on it
class _CustomPdb(object):
def __init__(self, *args, **kwargs):
called.append("init")
def reset(self):
called.append("reset")
def interaction(self, *args):
called.append("interaction")
_pytest._CustomPdb = _CustomPdb
return called
class TestPDB(object):
@pytest.fixture
def pdblist(self, request):
monkeypatch = request.getfixturevalue("monkeypatch")
pdblist = []
def mypdb(*args):
pdblist.append(args)
plugin = request.config.pluginmanager.getplugin('debugging')
monkeypatch.setattr(plugin, 'post_mortem', mypdb)
return pdblist
def test_pdb_on_fail(self, testdir, pdblist):
rep = runpdb_and_get_report(testdir, """
def test_func():
assert 0
""")
assert rep.failed
assert len(pdblist) == 1
tb = _pytest._code.Traceback(pdblist[0][0])
assert tb[-1].name == "test_func"
def test_pdb_on_xfail(self, testdir, pdblist):
rep = runpdb_and_get_report(testdir, """
import pytest
@pytest.mark.xfail
def test_func():
assert 0
""")
assert "xfail" in rep.keywords
assert not pdblist
def test_pdb_on_skip(self, testdir, pdblist):
rep = runpdb_and_get_report(testdir, """
import pytest
def test_func():
pytest.skip("hello")
""")
assert rep.skipped
assert len(pdblist) == 0
def test_pdb_on_BdbQuit(self, testdir, pdblist):
rep = runpdb_and_get_report(testdir, """
import bdb
def test_func():
raise bdb.BdbQuit
""")
assert rep.failed
assert len(pdblist) == 0
def test_pdb_interaction(self, testdir):
p1 = testdir.makepyfile("""
def test_1():
i = 0
assert i == 1
""")
child = testdir.spawn_pytest("--pdb %s" % p1)
child.expect(".*def test_1")
child.expect(".*i = 0")
child.expect("(Pdb)")
child.sendeof()
rest = child.read().decode("utf8")
assert "1 failed" in rest
assert "def test_1" not in rest
self.flush(child)
@staticmethod
def flush(child):
if platform.system() == 'Darwin':
return
if child.isalive():
child.wait()
def test_pdb_unittest_postmortem(self, testdir):
p1 = testdir.makepyfile("""
import unittest
class Blub(unittest.TestCase):
def tearDown(self):
self.filename = None
def test_false(self):
self.filename = 'debug' + '.me'
assert 0
""")
child = testdir.spawn_pytest("--pdb %s" % p1)
child.expect('(Pdb)')
child.sendline('p self.filename')
child.sendeof()
rest = child.read().decode("utf8")
assert 'debug.me' in rest
self.flush(child)
def test_pdb_unittest_skip(self, testdir):
"""Test for issue #2137"""
p1 = testdir.makepyfile("""
import unittest
@unittest.skipIf(True, 'Skipping also with pdb active')
class MyTestCase(unittest.TestCase):
def test_one(self):
assert 0
""")
child = testdir.spawn_pytest("-rs --pdb %s" % p1)
child.expect('Skipping also with pdb active')
child.expect('1 skipped in')
child.sendeof()
self.flush(child)
def test_pdb_print_captured_stdout(self, testdir):
p1 = testdir.makepyfile("""
def test_1():
print("get\\x20rekt")
assert False
""")
child = testdir.spawn_pytest("--pdb %s" % p1)
child.expect("captured stdout")
child.expect("get rekt")
child.expect("(Pdb)")
child.sendeof()
rest = child.read().decode("utf8")
assert "1 failed" in rest
assert "get rekt" not in rest
self.flush(child)
def test_pdb_print_captured_stderr(self, testdir):
p1 = testdir.makepyfile("""
def test_1():
import sys
sys.stderr.write("get\\x20rekt")
assert False
""")
child = testdir.spawn_pytest("--pdb %s" % p1)
child.expect("captured stderr")
child.expect("get rekt")
child.expect("(Pdb)")
child.sendeof()
rest = child.read().decode("utf8")
assert "1 failed" in rest
assert "get rekt" not in rest
self.flush(child)
def test_pdb_dont_print_empty_captured_stdout_and_stderr(self, testdir):
p1 = testdir.makepyfile("""
def test_1():
assert False
""")
child = testdir.spawn_pytest("--pdb %s" % p1)
child.expect("(Pdb)")
output = child.before.decode("utf8")
child.sendeof()
assert "captured stdout" not in output
assert "captured stderr" not in output
self.flush(child)
@pytest.mark.parametrize('showcapture', ['all', 'no', 'log'])
def test_pdb_print_captured_logs(self, testdir, showcapture):
p1 = testdir.makepyfile("""
def test_1():
import logging
logging.warn("get " + "rekt")
assert False
""")
child = testdir.spawn_pytest("--show-capture=%s --pdb %s" % (showcapture, p1))
if showcapture in ('all', 'log'):
child.expect("captured log")
child.expect("get rekt")
child.expect("(Pdb)")
child.sendeof()
rest = child.read().decode("utf8")
assert "1 failed" in rest
self.flush(child)
def test_pdb_print_captured_logs_nologging(self, testdir):
p1 = testdir.makepyfile("""
def test_1():
import logging
logging.warn("get " + "rekt")
assert False
""")
child = testdir.spawn_pytest("--show-capture=all --pdb "
"-p no:logging %s" % p1)
child.expect("get rekt")
output = child.before.decode("utf8")
assert "captured log" not in output
child.expect("(Pdb)")
child.sendeof()
rest = child.read().decode("utf8")
assert "1 failed" in rest
self.flush(child)
def test_pdb_interaction_exception(self, testdir):
p1 = testdir.makepyfile("""
import pytest
def globalfunc():
pass
def test_1():
pytest.raises(ValueError, globalfunc)
""")
child = testdir.spawn_pytest("--pdb %s" % p1)
child.expect(".*def test_1")
child.expect(".*pytest.raises.*globalfunc")
child.expect("(Pdb)")
child.sendline("globalfunc")
child.expect(".*function")
child.sendeof()
child.expect("1 failed")
self.flush(child)
def test_pdb_interaction_on_collection_issue181(self, testdir):
p1 = testdir.makepyfile("""
import pytest
xxx
""")
child = testdir.spawn_pytest("--pdb %s" % p1)
# child.expect(".*import pytest.*")
child.expect("(Pdb)")
child.sendeof()
child.expect("1 error")
self.flush(child)
def test_pdb_interaction_on_internal_error(self, testdir):
testdir.makeconftest("""
def pytest_runtest_protocol():
0/0
""")
p1 = testdir.makepyfile("def test_func(): pass")
child = testdir.spawn_pytest("--pdb %s" % p1)
# child.expect(".*import pytest.*")
child.expect("(Pdb)")
child.sendeof()
self.flush(child)
def test_pdb_interaction_capturing_simple(self, testdir):
p1 = testdir.makepyfile("""
import pytest
def test_1():
i = 0
print ("hello17")
pytest.set_trace()
x = 3
""")
child = testdir.spawn_pytest(str(p1))
child.expect("test_1")
child.expect("x = 3")
child.expect("(Pdb)")
child.sendeof()
rest = child.read().decode("utf-8")
assert "1 failed" in rest
assert "def test_1" in rest
assert "hello17" in rest # out is captured
self.flush(child)
def test_pdb_set_trace_interception(self, testdir):
p1 = testdir.makepyfile("""
import pdb
def test_1():
pdb.set_trace()
""")
child = testdir.spawn_pytest(str(p1))
child.expect("test_1")
child.expect("(Pdb)")
child.sendeof()
rest = child.read().decode("utf8")
assert "1 failed" in rest
assert "reading from stdin while output" not in rest
self.flush(child)
def test_pdb_and_capsys(self, testdir):
p1 = testdir.makepyfile("""
import pytest
def test_1(capsys):
print ("hello1")
pytest.set_trace()
""")
child = testdir.spawn_pytest(str(p1))
child.expect("test_1")
child.send("capsys.readouterr()\n")
child.expect("hello1")
child.sendeof()
child.read()
self.flush(child)
def test_set_trace_capturing_afterwards(self, testdir):
p1 = testdir.makepyfile("""
import pdb
def test_1():
pdb.set_trace()
def test_2():
print ("hello")
assert 0
""")
child = testdir.spawn_pytest(str(p1))
child.expect("test_1")
child.send("c\n")
child.expect("test_2")
child.expect("Captured")
child.expect("hello")
child.sendeof()
child.read()
self.flush(child)
def test_pdb_interaction_doctest(self, testdir):
p1 = testdir.makepyfile("""
import pytest
def function_1():
'''
>>> i = 0
>>> assert i == 1
'''
""")
child = testdir.spawn_pytest("--doctest-modules --pdb %s" % p1)
child.expect("(Pdb)")
child.sendline('i')
child.expect("0")
child.expect("(Pdb)")
child.sendeof()
rest = child.read().decode("utf8")
assert "1 failed" in rest
self.flush(child)
def test_pdb_interaction_capturing_twice(self, testdir):
p1 = testdir.makepyfile("""
import pytest
def test_1():
i = 0
print ("hello17")
pytest.set_trace()
x = 3
print ("hello18")
pytest.set_trace()
x = 4
""")
child = testdir.spawn_pytest(str(p1))
child.expect("test_1")
child.expect("x = 3")
child.expect("(Pdb)")
child.sendline('c')
child.expect("x = 4")
child.sendeof()
rest = child.read().decode("utf8")
assert "1 failed" in rest
assert "def test_1" in rest
assert "hello17" in rest # out is captured
assert "hello18" in rest # out is captured
self.flush(child)
def test_pdb_used_outside_test(self, testdir):
p1 = testdir.makepyfile("""
import pytest
pytest.set_trace()
x = 5
""")
child = testdir.spawn("%s %s" % (sys.executable, p1))
child.expect("x = 5")
child.sendeof()
self.flush(child)
def test_pdb_used_in_generate_tests(self, testdir):
p1 = testdir.makepyfile("""
import pytest
def pytest_generate_tests(metafunc):
pytest.set_trace()
x = 5
def test_foo(a):
pass
""")
child = testdir.spawn_pytest(str(p1))
child.expect("x = 5")
child.sendeof()
self.flush(child)
def test_pdb_collection_failure_is_shown(self, testdir):
p1 = testdir.makepyfile("xxx")
result = testdir.runpytest_subprocess("--pdb", p1)
result.stdout.fnmatch_lines([
"*NameError*xxx*",
"*1 error*",
])
def test_enter_pdb_hook_is_called(self, testdir):
testdir.makeconftest("""
def pytest_enter_pdb(config):
assert config.testing_verification == 'configured'
print 'enter_pdb_hook'
def pytest_configure(config):
config.testing_verification = 'configured'
""")
p1 = testdir.makepyfile("""
import pytest
def test_foo():
pytest.set_trace()
""")
child = testdir.spawn_pytest(str(p1))
child.expect("enter_pdb_hook")
child.send('c\n')
child.sendeof()
self.flush(child)
def test_pdb_custom_cls(self, testdir, custom_pdb_calls):
p1 = testdir.makepyfile("""xxx """)
result = testdir.runpytest_inprocess(
"--pdb", "--pdbcls=_pytest:_CustomPdb", p1)
result.stdout.fnmatch_lines([
"*NameError*xxx*",
"*1 error*",
])
assert custom_pdb_calls == ["init", "reset", "interaction"]
def test_pdb_custom_cls_without_pdb(self, testdir, custom_pdb_calls):
p1 = testdir.makepyfile("""xxx """)
result = testdir.runpytest_inprocess(
"--pdbcls=_pytest:_CustomPdb", p1)
result.stdout.fnmatch_lines([
"*NameError*xxx*",
"*1 error*",
])
assert custom_pdb_calls == []
def test_pdb_custom_cls_with_settrace(self, testdir, monkeypatch):
testdir.makepyfile(custom_pdb="""
class CustomPdb(object):
def set_trace(*args, **kwargs):
print 'custom set_trace>'
""")
p1 = testdir.makepyfile("""
import pytest
def test_foo():
pytest.set_trace()
""")
monkeypatch.setenv('PYTHONPATH', str(testdir.tmpdir))
child = testdir.spawn_pytest("--pdbcls=custom_pdb:CustomPdb %s" % str(p1))
child.expect('custom set_trace>')
self.flush(child)