def test_example(self):
assert set(map(str, Bridge.all_bridges_from_component_strings(
COMPONENT_STRINGS))) == {'0/1', '0/1--10/1', '0/1--10/1--9/10',
'0/2', '0/2--2/3', '0/2--2/3--3/4',
'0/2--2/3--3/5', '0/2--2/2',
'0/2--2/2--2/3', '0/2--2/2--2/3--3/4',
'0/2--2/2--2/3--3/5'}
def test_compatible(self):
bridge = Bridge()
assert bridge.compatible(Component.from_string('0/1'))
assert not bridge.compatible(Component.from_string('1/1'))
bridge = bridge.add(Component.from_string('0/1'))
assert bridge.compatible(Component.from_string('2/1'))
assert bridge.compatible(Component.from_string('1/2'))
def test_example(self):
assert Bridge.strength_of_longest_bridge(COMPONENT_STRINGS) == 19
def test_strongest_bridge_from_components_strings(self):
assert Bridge.strongest_bridge_from_component_strings(
COMPONENT_STRINGS) == 31
def test_two_parallel(self):
assert set(map(str, Bridge._all_bridges_from_components([
Component.from_string('0/1'), Component.from_string('0/2')]))) == \
{'0/1', '0/2'}
def test_single_incompatible(self):
assert set(map(str, Bridge._all_bridges_from_components([
Component.from_string('1/1')]))) == set()
def test_single(self):
assert set(map(str, Bridge._all_bridges_from_components([
Component.from_string('0/1')]))) == {'0/1'}
def test_empty(self):
assert list(Bridge._all_bridges_from_components([])) == []
def test_str(self):
bridge = Bridge()
bridge = bridge.add(Component.from_string('0/1'))
bridge = bridge.add(Component.from_string('10/1'))
assert str(bridge) == '0/1--10/1'