def test_duplicate_parent(self):
with self.assertRaises(DuplicateParentError):
_build_volume_chain(
[(_BLANK_UUID, 'a'), ('a', 'b'), ('a', 'c')])
def test_loop(self):
with self.assertRaises(ChainLoopError):
_build_volume_chain([
(_BLANK_UUID, 'a'), ('a', 'b'), ('b', 'c'), ('c', 'a')])
def test_no_base_volume(self):
with self.assertRaises(NoBaseVolume):
_build_volume_chain([('a', 'b'), ('b', 'c')])
def test_orphan_volumes(self):
volumes_children = [(_BLANK_UUID, 'a'), ('a', 'b'), ('c', 'd')]
with self.assertRaises(OrphanVolumes) as cm:
_build_volume_chain(volumes_children)
self.assertEqual(cm.exception.volumes_children, volumes_children)
def test_simple_chain(self):
volumes_children = [(_BLANK_UUID, 'a'), ('a', 'b'), ('b', 'c')]
self.assertEqual(_build_volume_chain(
volumes_children), ['a', 'b', 'c'])
def test_empty(self):
self.assertEqual(_build_volume_chain([]), [])
def test_only_base_volume(self):
self.assertEqual(_build_volume_chain([(_BLANK_UUID, 'a')]), ['a'])
def test_no_base_volume():
with pytest.raises(NoBaseVolume):
_build_volume_chain([('a', 'b'), ('b', 'c')])
def test_duplicate_parent():
with pytest.raises(DuplicateParentError):
_build_volume_chain(
[(_BLANK_UUID, 'a'), ('a', 'b'), ('a', 'c')])
def test_loop():
with pytest.raises(ChainLoopError):
_build_volume_chain([
(_BLANK_UUID, 'a'), ('a', 'b'), ('b', 'c'), ('c', 'a')])
def test_simple_chain():
volumes_children = [(_BLANK_UUID, 'a'), ('a', 'b'), ('b', 'c')]
assert _build_volume_chain(volumes_children) == ['a', 'b', 'c']
def test_orphan_volumes():
volumes_children = [(_BLANK_UUID, 'a'), ('a', 'b'), ('c', 'd')]
with pytest.raises(OrphanVolumes) as cm:
_build_volume_chain(volumes_children)
assert cm.value.volumes_children == volumes_children
def test_only_base_volume():
assert _build_volume_chain([(_BLANK_UUID, 'a')]) == ['a']
def test_empty():
assert _build_volume_chain([]) == []
