70 lines
1.8 KiB
Python
70 lines
1.8 KiB
Python
"""
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module containing a parametrized tests testing cross-python
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serialization via the pickle module.
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"""
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import py
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import pytest
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import _pytest._code
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pythonlist = ["python2.7", "python3.4", "python3.5"]
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@pytest.fixture(params=pythonlist)
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def python1(request, tmpdir):
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picklefile = tmpdir.join("data.pickle")
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return Python(request.param, picklefile)
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@pytest.fixture(params=pythonlist)
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def python2(request, python1):
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return Python(request.param, python1.picklefile)
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class Python(object):
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def __init__(self, version, picklefile):
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self.pythonpath = py.path.local.sysfind(version)
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if not self.pythonpath:
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pytest.skip("%r not found" % (version,))
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self.picklefile = picklefile
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def dumps(self, obj):
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dumpfile = self.picklefile.dirpath("dump.py")
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dumpfile.write(
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_pytest._code.Source(
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"""
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import pickle
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f = open(%r, 'wb')
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s = pickle.dump(%r, f, protocol=2)
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f.close()
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"""
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% (str(self.picklefile), obj)
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)
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)
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py.process.cmdexec("%s %s" % (self.pythonpath, dumpfile))
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def load_and_is_true(self, expression):
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loadfile = self.picklefile.dirpath("load.py")
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loadfile.write(
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_pytest._code.Source(
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"""
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import pickle
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f = open(%r, 'rb')
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obj = pickle.load(f)
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f.close()
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res = eval(%r)
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if not res:
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raise SystemExit(1)
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"""
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% (str(self.picklefile), expression)
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)
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)
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print(loadfile)
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py.process.cmdexec("%s %s" % (self.pythonpath, loadfile))
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@pytest.mark.parametrize("obj", [42, {}, {1: 3}])
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def test_basic_objects(python1, python2, obj):
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python1.dumps(obj)
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python2.load_and_is_true("obj == %s" % obj)
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