def test_isosceles(self): self.assertEqual(specify_triangle(1, 1, 2), 'isosceles')
def test_large_side(self): self.assertEqual(specify_triangle(5, 200, 1), None)
def test_scalene(self): self.assertEqual(specify_triangle(1, 2, 3), 'scalene')
def test_negative_zero_vals(self): self.assertEqual(specify_triangle(1, 0, -1), None)
def test_negative_val(self): self.assertEqual(specify_triangle(1, 5, -2), None)
def test_zero_val(self): self.assertEqual(specify_triangle(1, 2, 0), None)
def test_string_input_val(self): self.assertEqual(specify_triangle(1, 2, 'm'), None)
def test_equilateral(self): self.assertEqual(specify_triangle(5, 5, 5), 'equilateral')