def equilateral_triangle(self):
formatted_name = classify_triangle(3, 3, 3)
self.assertEqual(formatted_name, 'equilateral triangle')
def isosceles_triangle(self):
formatted_name = classify_triangle(3, 3, 5)
self.assertEqual(formatted_name, 'isosceles triangle')
def right_triangle(self):
formatted_name = classify_triangle(3, 4, 5)
self.assertEqual(formatted_name, 'right triangle')
def test_right_order():
"""
Test that a tirangle with a**2 + b**2 = c**2 triangle return 'right' even when c is not the third parameter
Note: right triangles are also scalene.
"""
assert 'right' == classify_triangle(5, 3, 4)
def scalene_triangle(self):
formatted_name = classify_triangle(3, 4, 6)
self.assertEqual(formatted_name, 'scalene triangle')
def test_right():
"""
Test that a tirangle with a**2 + b**2 = c**2 triangle returns 'right'
Note: right triangles are also scalene.
"""
assert 'right' == classify_triangle(3, 4, 5)
def test_invalid_zero():
"""
Test that an null size triangle returns 'invalid'
"""
assert 'invalid' == classify_triangle(0, 0, 0)
def test_isosceles():
"""
Test that a triangle with two equal sides returns 'isosceles'
"""
assert 'isosceles' == classify_triangle(2, 2, 3)
def test_scalene():
"""
Test that a triangle with three differnt sides returns 'scalene'
"""
assert 'scalene' == classify_triangle(2, 3, 4)
def test_equilateral():
"""
Test that a triangle with three equal sides returns 'equilateral'
Note: equilateral triangles are also isosceles
"""
assert 'equilateral' == classify_triangle(1.2, 1.2, 1.2)
def test_invalid_isosceles():
"""
Test that an invalid triangle with two equal sides returns 'invalid'
"""
assert 'invalid' == classify_triangle(1, 1, 3)
def test_invalid_scalene():
"""
Test that an invalid triangle with three different lengths returns 'invalid'
"""
assert 'invalid' == classify_triangle(1, 2, 3)
def test_nan():
"""
Test that an invalid triangle with a not a number length returns 'invalid'
"""
assert 'invalid' == classify_triangle(1, 2, float('nan'))
def test_inf():
"""
Test that an invalid triangle with an infinite length returns 'invalid'
"""
assert 'invalid' == classify_triangle(1, 2, float('inf'))