def test_apply_iter_with_undo():
env = {'x': '1', 'PATH': os.pathsep.join(['orig', 'paths'])}
e = EnvDelta.fromiter('PATH', ['my', 'fun/paths'])
env = e.apply(env)
f = EnvDelta.fromiter('PATH', ['truth', 'lies'])
exp = {'x': '1', 'PATH': os.pathsep.join(['lies', 'truth',
'fun/paths', 'my', 'orig', 'paths']), _undo_key: repr(f)}
obs = f.apply(env)
assert_equal(exp, obs)
def test_apply_iter():
env = {'x': '1', 'PATH': os.pathsep.join(['orig', 'paths'])}
e = EnvDelta.fromiter('PATH', ['my', 'fun/paths'])
exp = {'x': '1', 'PATH': os.pathsep.join(['fun/paths', 'my', 'orig', 'paths']),
_undo_key: repr(e)}
obs = e.apply(env)
assert_equal(exp, obs)
def test_merge_set_bad():
e = EnvDelta.fromiter('x', range(10))
f = EnvDelta.fromiter('x', range(11))
e.merge(f)
o = EnvDelta(sets={'x': set(range(11))})
assert_equal(e, o)
def test_merge_set_sca_bad():
e = EnvDelta.fromiter('x', range(10))
f = EnvDelta.fromscalar('x', 'YYY')
assert_raises(AssertionError, e.merge, f)
def test_merge_set_sca():
e = EnvDelta.fromiter('x', range(10))
f = EnvDelta.fromscalar('y', 'YYY')
e.merge(f)
o = EnvDelta(sets={'x': set(range(10))}, scalars={'y': 'YYY'})
assert_equal(e, o)
def test_fromiter():
e = EnvDelta.fromiter('x', range(10))
o = EnvDelta(sets={'x': set(range(10))})
assert_equal(e, o)
def test_add_other():
e = EnvDelta.fromiter('x', range(10))
e.add('y', range(11))
o = EnvDelta(sets={'x': set(range(10)), 'y': set(range(11))})
assert_equal(e, o)
