64 lines
		
	
	
		
			2.1 KiB
		
	
	
	
		
			Python
		
	
	
	
			
		
		
	
	
			64 lines
		
	
	
		
			2.1 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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pythonlist = ['python2.4', 'python2.5', 'python2.6', 'python2.7', 'python2.8']
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def pytest_generate_tests(metafunc):
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    if 'python1' in metafunc.funcargnames:
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        assert 'python2' in metafunc.funcargnames
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        for obj in metafunc.function.multiarg.kwargs['obj']:
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            for py1 in pythonlist:
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                for py2 in pythonlist:
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                    metafunc.addcall(id="%s-%s-%s" % (py1, py2, obj),
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                        param=(py1, py2, obj))
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@py.test.mark.multiarg(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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def pytest_funcarg__python1(request):
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    tmpdir = request.getfuncargvalue("tmpdir")
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    picklefile = tmpdir.join("data.pickle")
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    return Python(request.param[0], picklefile)
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def pytest_funcarg__python2(request):
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    python1 = request.getfuncargvalue("python1")
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    return Python(request.param[1], python1.picklefile)
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def pytest_funcarg__obj(request):
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    return request.param[2]
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class Python:
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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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            py.test.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(py.code.Source("""
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            import pickle
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            f = open(%r, 'wb')
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            s = pickle.dump(%r, f)
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            f.close()
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        """ % (str(self.picklefile), obj)))
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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(py.code.Source("""
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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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        """ % (str(self.picklefile), expression)))
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        print (loadfile)
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        py.process.cmdexec("%s %s" %(self.pythonpath, loadfile))
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