59 lines
2.1 KiB
Python
59 lines
2.1 KiB
Python
import unittest
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from triangle import Triangle, TriangleError
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class TriangleTests(unittest.TestCase):
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def test_equilateral_triangles_have_equal_sides(self):
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self.assertEqual(Triangle(2, 2, 2).kind(), "equilateral")
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def test_larger_equilateral_triangles_also_have_equal_sides(self):
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self.assertEqual(Triangle(10, 10, 10).kind(), "equilateral")
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def test_isosceles_triangles_have_last_two_sides_equal(self):
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self.assertEqual(Triangle(3, 4, 4).kind(), "isosceles")
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def test_isosceles_triangles_have_first_and_last_sides_equal(self):
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self.assertEqual(Triangle(4, 3, 4).kind(), "isosceles")
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def test_isosceles_triangles_have_two_first_sides_equal(self):
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self.assertEqual(Triangle(4, 4, 3).kind(), "isosceles")
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def test_isosceles_triangles_have_in_fact_exactly_two_sides_equal(self):
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self.assertEqual(Triangle(10, 10, 2).kind(), "isosceles")
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def test_scalene_triangles_have_no_equal_sides(self):
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self.assertEqual(Triangle(3, 4, 5).kind(), "scalene")
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def test_scalene_triangles_have_no_equal_sides_at_a_larger_scale_too(self):
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self.assertEqual(Triangle(10, 11, 12).kind(), "scalene")
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self.assertEqual(Triangle(5, 4, 2).kind(), "scalene")
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def test_very_small_triangles_are_legal(self):
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self.assertEqual(Triangle(0.4, 0.6, 0.3).kind(), "scalene")
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def test_triangles_with_no_size_are_illegal(self):
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with self.assertRaises(TriangleError):
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Triangle(0, 0, 0)
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def test_triangles_with_negative_sides_are_illegal(self):
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with self.assertRaises(TriangleError):
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Triangle(3, 4, -5)
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def test_triangles_violating_triangle_inequality_are_illegal(self):
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with self.assertRaises(TriangleError):
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Triangle(1, 1, 3)
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def test_triangles_violating_triangle_inequality_are_illegal_2(self):
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with self.assertRaises(TriangleError):
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Triangle(2, 4, 2)
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def test_triangles_violating_triangle_inequality_are_illegal_3(self):
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with self.assertRaises(TriangleError):
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Triangle(7, 3, 2)
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if __name__ == '__main__':
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unittest.main()
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