test_ok2/testing/test_pdb.py

703 lines
21 KiB
Python

from __future__ import absolute_import, division, print_function
import sys
import platform
import os
import _pytest._code
from _pytest.debugging import SUPPORTS_BREAKPOINT_BUILTIN
import pytest
_ENVIRON_PYTHONBREAKPOINT = os.environ.get("PYTHONBREAKPOINT", "")
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
@pytest.fixture
def custom_debugger_hook():
called = []
# install dummy debugger class and track which methods were called on it
class _CustomDebugger(object):
def __init__(self, *args, **kwargs):
called.append("init")
def reset(self):
called.append("reset")
def interaction(self, *args):
called.append("interaction")
def set_trace(self, frame):
print("**CustomDebugger**")
called.append("set_trace")
_pytest._CustomDebugger = _CustomDebugger
yield called
del _pytest._CustomDebugger
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_on_KeyboardInterrupt(self, testdir, pdblist):
rep = runpdb_and_get_report(
testdir,
"""
def test_func():
raise KeyboardInterrupt
""",
)
assert rep.failed
assert len(pdblist) == 1
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)
class TestDebuggingBreakpoints(object):
def test_supports_breakpoint_module_global(self):
"""
Test that supports breakpoint global marks on Python 3.7+ and not on
CPython 3.5, 2.7
"""
if sys.version_info.major == 3 and sys.version_info.minor >= 7:
assert SUPPORTS_BREAKPOINT_BUILTIN is True
if sys.version_info.major == 3 and sys.version_info.minor == 5:
assert SUPPORTS_BREAKPOINT_BUILTIN is False
if sys.version_info.major == 2 and sys.version_info.minor == 7:
assert SUPPORTS_BREAKPOINT_BUILTIN is False
@pytest.mark.skipif(
not SUPPORTS_BREAKPOINT_BUILTIN, reason="Requires breakpoint() builtin"
)
@pytest.mark.parametrize("arg", ["--pdb", ""])
def test_sys_breakpointhook_configure_and_unconfigure(self, testdir, arg):
"""
Test that sys.breakpointhook is set to the custom Pdb class once configured, test that
hook is reset to system value once pytest has been unconfigured
"""
testdir.makeconftest(
"""
import sys
from pytest import hookimpl
from _pytest.debugging import pytestPDB
def pytest_configure(config):
config._cleanup.append(check_restored)
def check_restored():
assert sys.breakpointhook == sys.__breakpointhook__
def test_check():
assert sys.breakpointhook == pytestPDB.set_trace
"""
)
testdir.makepyfile(
"""
def test_nothing(): pass
"""
)
args = (arg,) if arg else ()
result = testdir.runpytest_subprocess(*args)
result.stdout.fnmatch_lines(["*1 passed in *"])
@pytest.mark.skipif(
not SUPPORTS_BREAKPOINT_BUILTIN, reason="Requires breakpoint() builtin"
)
def test_pdb_custom_cls(self, testdir, custom_debugger_hook):
p1 = testdir.makepyfile(
"""
def test_nothing():
breakpoint()
"""
)
result = testdir.runpytest_inprocess(
"--pdb", "--pdbcls=_pytest:_CustomDebugger", p1
)
result.stdout.fnmatch_lines(["*CustomDebugger*", "*1 passed*"])
assert custom_debugger_hook == ["init", "set_trace"]
@pytest.mark.parametrize("arg", ["--pdb", ""])
@pytest.mark.skipif(
not SUPPORTS_BREAKPOINT_BUILTIN, reason="Requires breakpoint() builtin"
)
def test_environ_custom_class(self, testdir, custom_debugger_hook, arg):
testdir.makeconftest(
"""
import os
import sys
os.environ['PYTHONBREAKPOINT'] = '_pytest._CustomDebugger.set_trace'
def pytest_configure(config):
config._cleanup.append(check_restored)
def check_restored():
assert sys.breakpointhook == sys.__breakpointhook__
def test_check():
import _pytest
assert sys.breakpointhook is _pytest._CustomDebugger.set_trace
"""
)
testdir.makepyfile(
"""
def test_nothing(): pass
"""
)
args = (arg,) if arg else ()
result = testdir.runpytest_subprocess(*args)
result.stdout.fnmatch_lines(["*1 passed in *"])
@pytest.mark.skipif(
not SUPPORTS_BREAKPOINT_BUILTIN, reason="Requires breakpoint() builtin"
)
@pytest.mark.skipif(
not _ENVIRON_PYTHONBREAKPOINT == "",
reason="Requires breakpoint() default value",
)
def test_sys_breakpoint_interception(self, testdir):
p1 = testdir.makepyfile(
"""
def test_1():
breakpoint()
"""
)
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
TestPDB.flush(child)
@pytest.mark.skipif(
not SUPPORTS_BREAKPOINT_BUILTIN, reason="Requires breakpoint() builtin"
)
def test_pdb_not_altered(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
TestPDB.flush(child)