60 lines
1.7 KiB
Python
60 lines
1.7 KiB
Python
import unittest
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from fancymath.vector import Vector
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class TestVector(unittest.TestCase):
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def test_cross_product(self):
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# Dictionary of (v1, v2): v3
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values = {
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(Vector(1, 2, 3), Vector(3, 2, 1)): Vector(-4, 8, -4),
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(Vector(0, 0, 0), Vector(1, 2, 3)): Vector(0, 0, 0),
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(Vector(1, 0, 0), Vector(1, 0, 0)): Vector(0, 0, 0),
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}
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for inputs, expected in values.items():
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v1, v2 = inputs
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with self.subTest(v1=v1, v2=v2):
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v3 = v1 * v2
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self.assertIsInstance(v3, Vector)
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self.assertEqual(v3.x, expected.x)
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self.assertEqual(v3.y, expected.y)
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self.assertEqual(v3.z, expected.z)
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def test_cross_product_failure(self):
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v1 = Vector(1, 2, 3)
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v2 = (3, 2, 1)
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with self.assertRaises(TypeError):
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v1 * v2
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def test_add_vector(self):
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v1 = Vector(1, 2, 3)
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v2 = Vector(-3, -2, -1)
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v3 = v1 + v2
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self.assertIsInstance(v3, Vector)
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self.assertEqual(v3.x, v1.x + v2.x)
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def test_abs(self):
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v1 = Vector(0, 0, 0)
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v2 = Vector(1, 2, 2)
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v3 = Vector(1, -2, 2)
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self.assertEqual(v1.abs(), 0)
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self.assertEqual(v2.abs(), 3)
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self.assertEqual(v2.abs(), v3.abs())
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def test_dot_failure(self):
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with self.assertRaises(ValueError):
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v1 = Vector(1, 2, 3)
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v1.dot(3)
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def test_dot_product(self):
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v1 = Vector(1, 2, 3)
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v2 = Vector(-3, -2, -1)
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v3 = v1.dot(v2)
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self.assertEqual(v3,v1.x * v2.x + v1.y * v2.y + v1.z * v2.z)
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vzero = Vector(0, 0, 0)
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self.assertEqual(v1.dot(vzero),0)
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