def test_pickle(self, file):
"""
Can be pickled and unpickled for stdout and stderr.
Can't compare output because capsys et all would confuse the logic.
"""
pl = PrintLogger(file=file)
assert pl._file is pickle.loads(pickle.dumps(pl))._file
assert pl._lock is pickle.loads(pickle.dumps(pl))._lock
def test_prints_to_stdout_by_default(self, capsys):
"""
Instantiating without arguments gives conveniently a logger to standard
out.
"""
PrintLogger().msg("hello")
out, err = capsys.readouterr()
assert "hello\n" == out
assert "" == err
def test_deepcopy(self, capsys):
"""
Deepcopied PrintLogger works.
"""
copied_logger = copy.deepcopy(PrintLogger())
copied_logger.msg("hello")
out, err = capsys.readouterr()
assert "hello\n" == out
assert "" == err
def test_pickle_not_stdout_stderr(self, tmpdir, proto):
"""
PrintLoggers with differnt files than stdout/stderr raise a
PickingError.
"""
f = tmpdir.join("file.log")
f.write("")
pl = PrintLogger(file=f.open())
with pytest.raises(pickle.PicklingError, match="Only PrintLoggers to"):
pickle.dumps(pl, proto)
def test_lock(self):
"""
Creating a logger adds a lock to WRITE_LOCKS.
"""
sio = StringIO()
assert sio not in WRITE_LOCKS
PrintLogger(sio)
assert sio in WRITE_LOCKS
def test_prints_to_correct_file(self, tmpdir, capsys):
"""
Supplied files are respected.
"""
f = tmpdir.join('test.log')
fo = f.open('w')
PrintLogger(fo).msg('hello')
out, err = capsys.readouterr()
assert '' == out == err
fo.close()
assert 'hello\n' == f.read()
def test_prints_to_correct_file(self, tmpdir, capsys):
"""
Supplied files are respected.
"""
f = tmpdir.join("test.log")
fo = f.open("w")
PrintLogger(fo).msg("hello")
out, err = capsys.readouterr()
assert "" == out == err
fo.close()
assert "hello\n" == f.read()
def test_repr(self):
"""
__repr__ makes sense.
"""
assert repr(PrintLogger()).startswith("<PrintLogger(file=")
