def test_basic(self):
t = Environment()
list(t) # __iter__
self.assertRaises(TypeError, hash, t)
len(t)
self.assertTrue('PATH' in t)
self.assertFalse('FOOBAR72' in t)
self.assertRaises(KeyError, lambda: t['FOOBAR72'])
self.assertRaises(ProcessExecutionError, local.python, '-c', 'import os;os.environ["FOOBAR72"]')
t['FOOBAR72'] = 'spAm'
self.assertEqual(local.python('-c', 'import os;print (os.environ["FOOBAR72"])').splitlines(), ['spAm'])
del t['FOOBAR72']
t.keys()
t.items()
t.values()
t.get('HOME')
