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"""
PC-BASIC tests.test_pickle
Test pickling various kinds of objects
(c) 2020--2023 Rob Hagemans
This file is released under the GNU GPL version 3 or later.
"""
import pickle
from io import open
from pcbasic import Session
from pcbasic.basic.base.codestream import TokenisedStream
from pcbasic.basic.base.error import Exit
from tests.unit.utils import TestCase, run_tests
class PickleTest(TestCase):
"""Test pickling various kinds of objects."""
tag = u'pickle'
def test_pickle_tokenisedstream(self):
"""Pickle TokenisedStream object."""
ts = TokenisedStream()
ts.write(b'123')
ts.seek(0)
ts.seek(0)
ps = pickle.dumps(ts)
ts2 = pickle.loads(ps)
assert ts2.read() == b'123'
def test_pickle_session(self):
"""Pickle Session object."""
with Session() as s:
s.execute('a=1')
ps = pickle.dumps(s)
s2 = pickle.loads(ps)
assert s2.get_variable('a!') == 1
def test_pickle_session_open_file(self):
"""Pickle Session object with open file."""
s = Session(devices={'a': self.output_path()})
s.execute('open "A:TEST" for output as 1')
ps = pickle.dumps(s)
s2 = pickle.loads(ps)
s2.execute('print#1, "test"')
s2.close()
with open(self.output_path('TEST')) as f:
assert f.read() == u'test\n\x1a'
def test_pickle_session_running(self):
"""Pickle Session object with running program."""
s = Session()
s.execute('10 for i%=1 to 10: system: next')
try:
s.execute('run')
except Exit:
pass
ps = pickle.dumps(s)
s2 = pickle.loads(ps)
# resume the running program
try:
s2.interact()
except Exit:
pass
assert s2.get_variable('i%') == 2
if __name__ == '__main__':
run_tests()
|
