def test_is_rb(self):
tr = Triangle(Point(0, 0), Point(3, 0), Point(0, 3))
self.assertTrue(tr.is_rb())
tr = Triangle(Point(4.5, 4.5), Point(3, 0), Point(0, 3))
self.assertTrue(tr.is_rb())
tr = Triangle(Point(0, 0), Point(0, 0), Point(0, 0))
self.assertFalse(tr.is_rb())
tr = Triangle(Point(0, 1.23), Point(0, 1.23), Point(0, 6))
self.assertFalse(tr.is_rb())
tr = Triangle(Point(0, 1), Point(0, 3), Point(0, 6))
self.assertFalse(tr.is_rb())
def test_square(self):
tr = Triangle(Point(0, 1), Point(0, 3), Point(0, 6))
self.assertEqual(tr.square(), -1)
tr = Triangle(Point(0, 0), Point(3, 0), Point(0, 3))
self.assertEqual(tr.square(), 4.5)
tr = Triangle(Point(0, 0), Point(10.1, 0), Point(0, 10.1))
self.assertEqual(tr.square(), 51.005)
tr = Triangle(Point(0, 0), Point(0, 0), Point(0, 0))
self.assertEqual(tr.square(), -1)
tr = Triangle(Point(0, 1.23), Point(0, 1.23), Point(0, 6))
self.assertEqual(tr.square(), -1)
tr = Triangle(Point(0, 1), Point(0, 3), Point(0, 6))
self.assertEqual(tr.square(), -1)
def test_is_triangle(self):
tr = Triangle(Point(0, 0), Point(0, 3), Point(4, 0))
self.assertTrue(tr.is_triangle())
tr = Triangle(Point(0, 0), Point(0, 3), Point(10, 0))
self.assertTrue(tr.is_triangle())
tr = Triangle(Point(0, 1.5), Point(3, 0), Point(1.5, 1))
self.assertTrue(tr.is_triangle())
tr = Triangle(Point(0, 1), Point(0, 3), Point(0, 6))
self.assertFalse(tr.is_triangle())
tr = Triangle(Point(0, 1.23), Point(0, 1.23), Point(0, 6))
self.assertFalse(tr.is_triangle())
tr = Triangle(Point(0, 0), Point(0, 0), Point(0, 0))
self.assertFalse(tr.is_triangle())
def test_str(self):
tr = Triangle(Point(0, 0), Point(3, 0), Point(0, 3))
self.assertEqual(str(tr), "0 0 3 0 0 3")