def test_equal_ok(self):
g = Graph()
self.assertEqual(g, self.empty_graph)
self.assertFalse(g is self.empty_graph)
g.insert(2)
self.assertEqual(g, self.unit_graph)
self.assertFalse(g is self.unit_graph)
g.insert(4)
g.insert(5)
g.connect(4,5)
g.connect(5,4)
g.connect(2,5)
self.assertEqual(g, self.some_graph)
self.assertFalse(g is self.some_graph)
def test_equal_ok(self):
g = Graph()
self.assertEqual(g, self.empty_graph)
self.assertFalse(g is self.empty_graph)
g.insert(2)
self.assertEqual(g, self.unit_graph)
self.assertFalse(g is self.unit_graph)
g.insert(4)
g.insert(5)
g.connect(4, 5)
g.connect(5, 4)
g.connect(2, 5)
self.assertEqual(g, self.some_graph)
self.assertFalse(g is self.some_graph)
class TestGraphMethods(unittest.TestCase):
def setUp(self):
self.empty_graph = Graph()
self.unit_graph = Graph()
self.unit_graph.insert(2)
self.some_graph = Graph()
self.some_graph.insert(4)
self.some_graph.insert(5)
self.some_graph.insert(2)
self.some_graph.connect(4,5)
self.some_graph.connect(5,4)
self.some_graph.connect(2,5)
def test_adjacent_raises(self):
with self.assertRaises(ValueError):
self.empty_graph.adjacent(1,2)
with self.assertRaises(ValueError):
self.unit_graph.adjacent(1,2)
with self.assertRaises(ValueError):
self.some_graph.adjacent(2,6)
with self.assertRaises(ValueError):
self.some_graph.adjacent(1,2)
def test_adjacent_ok(self):
self.assertTrue(self.some_graph.adjacent(4,5))
self.assertTrue(self.some_graph.adjacent(5,4))
self.assertTrue(self.some_graph.adjacent(2,5))
self.assertFalse(self.some_graph.adjacent(5,2))
self.assertFalse(self.some_graph.adjacent(2,4))
self.assertFalse(self.some_graph.adjacent(4,2))
def test_adjacent_to_self(self):
self.unit_graph.connect(2,2)
self.assertTrue(self.unit_graph.adjacent(2,2))
self.assertFalse(self.some_graph.adjacent(2,2))
self.assertFalse(self.some_graph.adjacent(4,4))
self.assertFalse(self.some_graph.adjacent(5,5))
self.some_graph.connect(5,5)
self.assertTrue(self.some_graph.adjacent(5,5))
def test_neighbors_raises(self):
with self.assertRaises(ValueError):
self.empty_graph.neighbors(2)
with self.assertRaises(ValueError):
self.unit_graph.neighbors(5)
with self.assertRaises(ValueError):
self.some_graph.neighbors(1)
def test_neighbors_ok(self):
self.assertEqual([], self.unit_graph.neighbors(2))
self.assertEqual([4], sorted(self.some_graph.neighbors(5)))
self.assertEqual([5], sorted(self.some_graph.neighbors(4)))
self.assertEqual([5], sorted(self.some_graph.neighbors(2)))
self.some_graph.connect(5,5)
self.assertEqual([4,5], sorted(self.some_graph.neighbors(5)))
def test_vertices_ok(self):
self.assertEqual([], sorted(self.empty_graph.vertices()))
self.assertEqual([2], sorted(self.unit_graph.vertices()))
self.assertEqual([2,4,5], sorted(self.some_graph.vertices()))
def test_contains_ok(self):
self.assertFalse(3 in self.empty_graph)
self.assertFalse(self.empty_graph.contains(3))
self.assertTrue(2 in self.unit_graph)
self.assertTrue(self.unit_graph.contains(2))
self.assertFalse(4 in self.unit_graph)
self.assertFalse(self.unit_graph.contains(4))
self.assertTrue(2 in self.some_graph)
self.assertTrue(self.some_graph.contains(2))
self.assertTrue(4 in self.some_graph)
self.assertTrue(self.some_graph.contains(4))
self.assertTrue(5 in self.some_graph)
self.assertTrue(self.some_graph.contains(5))
self.assertFalse(1 in self.some_graph)
self.assertFalse(self.some_graph.contains(1))
def test_insert_raises(self):
with self.assertRaises(ValueError):
self.unit_graph.insert(2)
with self.assertRaises(ValueError):
self.some_graph.insert(2)
with self.assertRaises(ValueError):
self.some_graph.insert(4)
with self.assertRaises(ValueError):
self.some_graph.insert(5)
def test_insert_ok(self):
self.empty_graph.insert(4)
self.assertEqual([4], self.empty_graph.vertices())
self.empty_graph.insert(2)
self.assertEqual([2,4], sorted(self.empty_graph.vertices()))
self.empty_graph.insert(1)
self.assertEqual([1,2,4], sorted(self.empty_graph.vertices()))
def test_remove_raises(self):
with self.assertRaises(ValueError):
self.empty_graph.remove(4)
with self.assertRaises(ValueError):
self.unit_graph.remove(1)
with self.assertRaises(ValueError):
self.some_graph.remove(7)
def test_remove_ok(self):
self.unit_graph.remove(2)
self.assertTrue(self.unit_graph.is_empty())
self.some_graph.remove(5)
self.assertEqual([], self.some_graph.neighbors(4))
self.assertEqual([], self.some_graph.neighbors(2))
def test_remove_when_self_adjacent(self):
self.some_graph.connect(5,5)
self.some_graph.remove(5)
self.assertEqual([], self.some_graph.neighbors(4))
self.assertEqual([], self.some_graph.neighbors(2))
def test_remove_no_neighbors(self):
self.some_graph.connect(5,2)
self.some_graph.connect(4,2)
self.some_graph.connect(2,4)
self.some_graph.connect(5,5)
self.some_graph.remove(5)
self.assertTrue(5 not in self.some_graph)
self.assertTrue(5 not in self.some_graph.neighbors(4))
self.assertTrue(5 not in self.some_graph.neighbors(2))
def test_connect_raises(self):
with self.assertRaises(ValueError):
self.empty_graph.connect(1,2)
with self.assertRaises(ValueError):
self.unit_graph.connect(1,2)
with self.assertRaises(ValueError):
self.unit_graph.connect(2,1)
with self.assertRaises(ValueError):
self.unit_graph.connect(2,2)
self.unit_graph.connect(2,2)
with self.assertRaises(ValueError):
self.some_graph.connect(4,5)
with self.assertRaises(ValueError):
self.some_graph.connect(5,4)
with self.assertRaises(ValueError):
self.some_graph.connect(2,5)
with self.assertRaises(ValueError):
self.some_graph.connect(1,5)
with self.assertRaises(ValueError):
self.some_graph.connect(5,1)
def test_connect_ok(self):
self.unit_graph.connect(2,2)
self.assertTrue(self.unit_graph.adjacent(2,2))
self.some_graph.connect(5,5)
self.assertTrue(self.some_graph.adjacent(5,5))
self.some_graph.connect(2,4)
self.assertTrue(self.some_graph.adjacent(2,4))
self.some_graph.connect(4,2)
self.assertTrue(self.some_graph.adjacent(4,2))
def test_disconnect_raises(self):
with self.assertRaises(ValueError):
self.empty_graph.disconnect(3,2)
with self.assertRaises(ValueError):
self.unit_graph.disconnect(2,2)
with self.assertRaises(ValueError):
self.unit_graph.disconnect(5,2)
with self.assertRaises(ValueError):
self.unit_graph.disconnect(2,5)
with self.assertRaises(ValueError):
self.unit_graph.disconnect(5,7)
with self.assertRaises(ValueError):
self.some_graph.disconnect(5,2)
with self.assertRaises(ValueError):
self.some_graph.disconnect(8,9)
with self.assertRaises(ValueError):
self.some_graph.disconnect(4,9)
with self.assertRaises(ValueError):
self.some_graph.disconnect(9,5)
with self.assertRaises(ValueError):
self.some_graph.disconnect(2,5)
self.some_graph.disconnect(2,5)
def test_disconnect_ok(self):
self.some_graph.disconnect(2,5)
self.assertFalse(self.some_graph.adjacent(2,5))
self.assertTrue(self.some_graph.adjacent(5,4))
self.assertTrue(self.some_graph.adjacent(4,5))
self.some_graph.connect(5,5)
self.some_graph.connect(2,5)
self.some_graph.disconnect(5,5)
self.assertFalse(self.some_graph.adjacent(5,5))
self.assertTrue(self.some_graph.adjacent(2,5))
self.assertTrue(self.some_graph.adjacent(5,4))
self.assertTrue(self.some_graph.adjacent(4,5))
def test_n_edges_ok(self):
self.assertEqual(0, self.empty_graph.n_edges())
self.assertEqual(0, self.unit_graph.n_edges())
self.assertEqual(3, self.some_graph.n_edges())
self.unit_graph.connect(2,2)
self.assertEqual(1, self.unit_graph.n_edges())
self.some_graph.connect(4,2)
self.assertEqual(4, self.some_graph.n_edges())
self.some_graph.disconnect(2,5)
self.assertEqual(3, self.some_graph.n_edges())
def test_n_vertices_ok(self):
self.assertEqual(0, self.empty_graph.n_vertices())
self.assertEqual(1, self.unit_graph.n_vertices())
self.assertEqual(3, self.some_graph.n_vertices())
self.empty_graph.insert(5)
self.assertEqual(1, self.empty_graph.n_vertices())
self.some_graph.remove(5)
self.assertEqual(2, self.some_graph.n_vertices())
def test_is_empty_ok(self):
self.assertTrue(self.empty_graph.is_empty())
self.assertFalse(self.unit_graph.is_empty())
self.assertFalse(self.some_graph.is_empty())
def test_equal_self(self):
self.assertTrue(self.empty_graph.equal(self.empty_graph))
self.assertEqual(self.empty_graph, self.empty_graph)
self.assertTrue(self.unit_graph.equal(self.unit_graph))
self.assertEqual(self.unit_graph, self.unit_graph)
self.assertTrue(self.some_graph.equal(self.some_graph))
self.assertEqual(self.some_graph, self.some_graph)
def test_equal_ok(self):
g = Graph()
self.assertEqual(g, self.empty_graph)
self.assertFalse(g is self.empty_graph)
g.insert(2)
self.assertEqual(g, self.unit_graph)
self.assertFalse(g is self.unit_graph)
g.insert(4)
g.insert(5)
g.connect(4,5)
g.connect(5,4)
g.connect(2,5)
self.assertEqual(g, self.some_graph)
self.assertFalse(g is self.some_graph)
def test_copy_ok(self):
g = self.empty_graph.copy()
self.assertEqual(g, self.empty_graph)
self.assertFalse(g is self.empty_graph)
g = self.unit_graph.copy()
self.assertEqual(g, self.unit_graph)
self.assertFalse(g is self.unit_graph)
g = self.some_graph.copy()
self.assertEqual(g, self.some_graph)
self.assertFalse(g is self.some_graph)
def test_clear_ok(self):
self.empty_graph.clear()
self.assertEqual(0, self.empty_graph.n_vertices())
self.assertEqual(0, self.empty_graph.n_edges())
self.unit_graph.clear()
self.assertEqual(0, self.unit_graph.n_vertices())
self.assertEqual(0, self.unit_graph.n_edges())
self.some_graph.clear()
self.assertEqual(0, self.some_graph.n_vertices())
self.assertEqual(0, self.some_graph.n_edges())
class TestGraphMethods(unittest.TestCase):
def setUp(self):
self.empty_graph = Graph()
self.unit_graph = Graph()
self.unit_graph.insert(2)
self.some_graph = Graph()
self.some_graph.insert(4)
self.some_graph.insert(5)
self.some_graph.insert(2)
self.some_graph.connect(4, 5)
self.some_graph.connect(5, 4)
self.some_graph.connect(2, 5)
def test_adjacent_raises(self):
with self.assertRaises(ValueError):
self.empty_graph.adjacent(1, 2)
with self.assertRaises(ValueError):
self.unit_graph.adjacent(1, 2)
with self.assertRaises(ValueError):
self.some_graph.adjacent(2, 6)
with self.assertRaises(ValueError):
self.some_graph.adjacent(1, 2)
def test_adjacent_ok(self):
self.assertTrue(self.some_graph.adjacent(4, 5))
self.assertTrue(self.some_graph.adjacent(5, 4))
self.assertTrue(self.some_graph.adjacent(2, 5))
self.assertFalse(self.some_graph.adjacent(5, 2))
self.assertFalse(self.some_graph.adjacent(2, 4))
self.assertFalse(self.some_graph.adjacent(4, 2))
def test_adjacent_to_self(self):
self.unit_graph.connect(2, 2)
self.assertTrue(self.unit_graph.adjacent(2, 2))
self.assertFalse(self.some_graph.adjacent(2, 2))
self.assertFalse(self.some_graph.adjacent(4, 4))
self.assertFalse(self.some_graph.adjacent(5, 5))
self.some_graph.connect(5, 5)
self.assertTrue(self.some_graph.adjacent(5, 5))
def test_neighbors_raises(self):
with self.assertRaises(ValueError):
self.empty_graph.neighbors(2)
with self.assertRaises(ValueError):
self.unit_graph.neighbors(5)
with self.assertRaises(ValueError):
self.some_graph.neighbors(1)
def test_neighbors_ok(self):
self.assertEqual([], self.unit_graph.neighbors(2))
self.assertEqual([4], sorted(self.some_graph.neighbors(5)))
self.assertEqual([5], sorted(self.some_graph.neighbors(4)))
self.assertEqual([5], sorted(self.some_graph.neighbors(2)))
self.some_graph.connect(5, 5)
self.assertEqual([4, 5], sorted(self.some_graph.neighbors(5)))
def test_vertices_ok(self):
self.assertEqual([], sorted(self.empty_graph.vertices()))
self.assertEqual([2], sorted(self.unit_graph.vertices()))
self.assertEqual([2, 4, 5], sorted(self.some_graph.vertices()))
def test_contains_ok(self):
self.assertFalse(3 in self.empty_graph)
self.assertFalse(self.empty_graph.contains(3))
self.assertTrue(2 in self.unit_graph)
self.assertTrue(self.unit_graph.contains(2))
self.assertFalse(4 in self.unit_graph)
self.assertFalse(self.unit_graph.contains(4))
self.assertTrue(2 in self.some_graph)
self.assertTrue(self.some_graph.contains(2))
self.assertTrue(4 in self.some_graph)
self.assertTrue(self.some_graph.contains(4))
self.assertTrue(5 in self.some_graph)
self.assertTrue(self.some_graph.contains(5))
self.assertFalse(1 in self.some_graph)
self.assertFalse(self.some_graph.contains(1))
def test_insert_raises(self):
with self.assertRaises(ValueError):
self.unit_graph.insert(2)
with self.assertRaises(ValueError):
self.some_graph.insert(2)
with self.assertRaises(ValueError):
self.some_graph.insert(4)
with self.assertRaises(ValueError):
self.some_graph.insert(5)
def test_insert_ok(self):
self.empty_graph.insert(4)
self.assertEqual([4], self.empty_graph.vertices())
self.empty_graph.insert(2)
self.assertEqual([2, 4], sorted(self.empty_graph.vertices()))
self.empty_graph.insert(1)
self.assertEqual([1, 2, 4], sorted(self.empty_graph.vertices()))
def test_remove_raises(self):
with self.assertRaises(ValueError):
self.empty_graph.remove(4)
with self.assertRaises(ValueError):
self.unit_graph.remove(1)
with self.assertRaises(ValueError):
self.some_graph.remove(7)
def test_remove_ok(self):
self.unit_graph.remove(2)
self.assertTrue(self.unit_graph.is_empty())
self.some_graph.remove(5)
self.assertEqual([], self.some_graph.neighbors(4))
self.assertEqual([], self.some_graph.neighbors(2))
def test_remove_when_self_adjacent(self):
self.some_graph.connect(5, 5)
self.some_graph.remove(5)
self.assertEqual([], self.some_graph.neighbors(4))
self.assertEqual([], self.some_graph.neighbors(2))
def test_remove_no_neighbors(self):
self.some_graph.connect(5, 2)
self.some_graph.connect(4, 2)
self.some_graph.connect(2, 4)
self.some_graph.connect(5, 5)
self.some_graph.remove(5)
self.assertTrue(5 not in self.some_graph)
self.assertTrue(5 not in self.some_graph.neighbors(4))
self.assertTrue(5 not in self.some_graph.neighbors(2))
def test_connect_raises(self):
with self.assertRaises(ValueError):
self.empty_graph.connect(1, 2)
with self.assertRaises(ValueError):
self.unit_graph.connect(1, 2)
with self.assertRaises(ValueError):
self.unit_graph.connect(2, 1)
with self.assertRaises(ValueError):
self.unit_graph.connect(2, 2)
self.unit_graph.connect(2, 2)
with self.assertRaises(ValueError):
self.some_graph.connect(4, 5)
with self.assertRaises(ValueError):
self.some_graph.connect(5, 4)
with self.assertRaises(ValueError):
self.some_graph.connect(2, 5)
with self.assertRaises(ValueError):
self.some_graph.connect(1, 5)
with self.assertRaises(ValueError):
self.some_graph.connect(5, 1)
def test_connect_ok(self):
self.unit_graph.connect(2, 2)
self.assertTrue(self.unit_graph.adjacent(2, 2))
self.some_graph.connect(5, 5)
self.assertTrue(self.some_graph.adjacent(5, 5))
self.some_graph.connect(2, 4)
self.assertTrue(self.some_graph.adjacent(2, 4))
self.some_graph.connect(4, 2)
self.assertTrue(self.some_graph.adjacent(4, 2))
def test_disconnect_raises(self):
with self.assertRaises(ValueError):
self.empty_graph.disconnect(3, 2)
with self.assertRaises(ValueError):
self.unit_graph.disconnect(2, 2)
with self.assertRaises(ValueError):
self.unit_graph.disconnect(5, 2)
with self.assertRaises(ValueError):
self.unit_graph.disconnect(2, 5)
with self.assertRaises(ValueError):
self.unit_graph.disconnect(5, 7)
with self.assertRaises(ValueError):
self.some_graph.disconnect(5, 2)
with self.assertRaises(ValueError):
self.some_graph.disconnect(8, 9)
with self.assertRaises(ValueError):
self.some_graph.disconnect(4, 9)
with self.assertRaises(ValueError):
self.some_graph.disconnect(9, 5)
with self.assertRaises(ValueError):
self.some_graph.disconnect(2, 5)
self.some_graph.disconnect(2, 5)
def test_disconnect_ok(self):
self.some_graph.disconnect(2, 5)
self.assertFalse(self.some_graph.adjacent(2, 5))
self.assertTrue(self.some_graph.adjacent(5, 4))
self.assertTrue(self.some_graph.adjacent(4, 5))
self.some_graph.connect(5, 5)
self.some_graph.connect(2, 5)
self.some_graph.disconnect(5, 5)
self.assertFalse(self.some_graph.adjacent(5, 5))
self.assertTrue(self.some_graph.adjacent(2, 5))
self.assertTrue(self.some_graph.adjacent(5, 4))
self.assertTrue(self.some_graph.adjacent(4, 5))
def test_n_edges_ok(self):
self.assertEqual(0, self.empty_graph.n_edges())
self.assertEqual(0, self.unit_graph.n_edges())
self.assertEqual(3, self.some_graph.n_edges())
self.unit_graph.connect(2, 2)
self.assertEqual(1, self.unit_graph.n_edges())
self.some_graph.connect(4, 2)
self.assertEqual(4, self.some_graph.n_edges())
self.some_graph.disconnect(2, 5)
self.assertEqual(3, self.some_graph.n_edges())
def test_n_vertices_ok(self):
self.assertEqual(0, self.empty_graph.n_vertices())
self.assertEqual(1, self.unit_graph.n_vertices())
self.assertEqual(3, self.some_graph.n_vertices())
self.empty_graph.insert(5)
self.assertEqual(1, self.empty_graph.n_vertices())
self.some_graph.remove(5)
self.assertEqual(2, self.some_graph.n_vertices())
def test_is_empty_ok(self):
self.assertTrue(self.empty_graph.is_empty())
self.assertFalse(self.unit_graph.is_empty())
self.assertFalse(self.some_graph.is_empty())
def test_equal_self(self):
self.assertTrue(self.empty_graph.equal(self.empty_graph))
self.assertEqual(self.empty_graph, self.empty_graph)
self.assertTrue(self.unit_graph.equal(self.unit_graph))
self.assertEqual(self.unit_graph, self.unit_graph)
self.assertTrue(self.some_graph.equal(self.some_graph))
self.assertEqual(self.some_graph, self.some_graph)
def test_equal_ok(self):
g = Graph()
self.assertEqual(g, self.empty_graph)
self.assertFalse(g is self.empty_graph)
g.insert(2)
self.assertEqual(g, self.unit_graph)
self.assertFalse(g is self.unit_graph)
g.insert(4)
g.insert(5)
g.connect(4, 5)
g.connect(5, 4)
g.connect(2, 5)
self.assertEqual(g, self.some_graph)
self.assertFalse(g is self.some_graph)
def test_copy_ok(self):
g = self.empty_graph.copy()
self.assertEqual(g, self.empty_graph)
self.assertFalse(g is self.empty_graph)
g = self.unit_graph.copy()
self.assertEqual(g, self.unit_graph)
self.assertFalse(g is self.unit_graph)
g = self.some_graph.copy()
self.assertEqual(g, self.some_graph)
self.assertFalse(g is self.some_graph)
def test_clear_ok(self):
self.empty_graph.clear()
self.assertEqual(0, self.empty_graph.n_vertices())
self.assertEqual(0, self.empty_graph.n_edges())
self.unit_graph.clear()
self.assertEqual(0, self.unit_graph.n_vertices())
self.assertEqual(0, self.unit_graph.n_edges())
self.some_graph.clear()
self.assertEqual(0, self.some_graph.n_vertices())
self.assertEqual(0, self.some_graph.n_edges())