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import pytest
class AppTestBreakpoint:
def setup_class(cls):
cls.w_import_mock_pdb = cls.space.appexec([], """():
import sys
from contextlib import contextmanager
from types import ModuleType
@contextmanager
def w_import_mock_pdb():
try:
mock_pdb = ModuleType('pdb')
mock_pdb.set_trace = None
sys.modules['pdb'] = mock_pdb
yield mock_pdb
finally:
del sys.modules['pdb']
return w_import_mock_pdb
""")
cls.w_mock_function = cls.space.appexec([], """():
from contextlib import contextmanager
class MockedCallable:
def __init__(self):
self.called = 0
def __call__(self, *args, **kwargs):
self.called += 1
self.last_call = (args, kwargs)
@contextmanager
def mock_function(scope, attr, delete=False):
old = getattr(scope, attr)
try:
if not delete:
new = MockedCallable()
setattr(scope, attr, new)
yield new
else:
delattr(scope, attr)
yield
finally:
setattr(scope, attr, old)
return mock_function
""")
def test_default(self):
import sys
assert sys.breakpointhook is sys.__breakpointhook__
import os
assert 'PYTHONBREAKPOINT' not in os.environ
with self.import_mock_pdb() as pdb:
with self.mock_function(pdb, 'set_trace') as mocked:
breakpoint()
assert mocked.called == 1
def test_args_kwargs(self):
import sys
with self.import_mock_pdb() as pdb:
with self.mock_function(pdb, 'set_trace') as mocked:
breakpoint(1, 2, 3, x=4, y=5)
assert mocked.called == 1
assert mocked.last_call == ((1, 2, 3), {'x': 4, 'y': 5})
def test_breakpointhook(self):
import sys
with self.import_mock_pdb() as pdb:
with self.mock_function(sys, 'breakpointhook') as mocked, \
self.mock_function(pdb, 'set_trace') as mocked_pdb:
breakpoint()
assert mocked.called == 1
assert mocked_pdb.called == 0
with self.mock_function(pdb, 'set_trace') as mocked_pdb:
breakpoint()
assert mocked_pdb.called == 1
def test_breakpointhook_lost(self):
import sys
with self.import_mock_pdb() as pdb:
with self.mock_function(sys, 'breakpointhook', delete=True):
with raises(RuntimeError) as excinfo:
breakpoint()
assert str(excinfo.value) == "lost sys.breakpointhook"
@pytest.mark.dont_track_allocations('putenv intentionally keeps strings alive')
def test_env_default(self):
import os
try:
os.environ['PYTHONBREAKPOINT'] = ""
import sys
with self.import_mock_pdb() as pdb:
with self.mock_function(pdb, 'set_trace') as mocked:
breakpoint()
assert mocked.called == 1
finally:
del os.environ['PYTHONBREAKPOINT']
@pytest.mark.dont_track_allocations('putenv intentionally keeps strings alive')
def test_env_disable(self):
import os
try:
os.environ['PYTHONBREAKPOINT'] = "0"
import sys
with self.import_mock_pdb() as pdb:
with self.mock_function(pdb, 'set_trace') as mocked:
breakpoint()
assert mocked.called == 0
with self.mock_function(sys, 'breakpointhook') as mocked:
breakpoint()
assert mocked.called == 1
finally:
del os.environ['PYTHONBREAKPOINT']
@pytest.mark.dont_track_allocations('putenv intentionally keeps strings alive')
def test_env_other(self):
import os
try:
os.environ['PYTHONBREAKPOINT'] = 'sys.exit'
import sys
with self.import_mock_pdb() as pdb:
with self.mock_function(sys, 'exit') as mocked, \
self.mock_function(pdb, 'set_trace') as mocked_pdb:
breakpoint()
assert mocked.called == 1
assert mocked_pdb.called == 0
finally:
del os.environ['PYTHONBREAKPOINT']
@pytest.mark.dont_track_allocations('putenv intentionally keeps strings alive')
def test_env_nonexistent(self):
import os
import warnings
try:
os.environ['PYTHONBREAKPOINT'] = 'blah.bleh'
import sys
with self.import_mock_pdb() as pdb:
with self.mock_function(pdb, 'set_trace') as mocked_pdb, \
warnings.catch_warnings(record=True) as w:
breakpoint()
assert mocked_pdb.called == 0
assert len(w) == 1
assert str(w[-1].message) == 'Ignoring unimportable $PYTHONBREAKPOINT: "blah.bleh"'
finally:
del os.environ['PYTHONBREAKPOINT']
|
