def test_true_if_all_sides_are_equal(self): self.assertIs(is_equilateral([2, 2, 2]), True)
def test_false_if_all_sides_are_zero(self): self.assertIs(is_equilateral([0, 0, 0]), False)
def test_sides_may_be_floats(self): self.assertIs(is_equilateral([0.5, 0.5, 0.5]), True)
def test_false_if_any_side_is_unequal(self): self.assertIs(is_equilateral([2, 3, 2]), False)
def test_false_if_no_sides_are_equal(self): self.assertIs(is_equilateral([5, 4, 6]), False)
def test_all_zero_sides_is_not_a_triangle(self): self.assertIs(is_equilateral([0, 0, 0]), False)