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92 lines
2.2 KiB
Python
92 lines
2.2 KiB
Python
"""
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Unit tests for the binary search algorithm
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@jlengrand
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2013/07
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"""
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from bin_search import bin_search
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import unittest
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class test_bin_search(unittest.TestCase):
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def setUp(self):
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self.arr1 = [1, 2, 3, 4, 5]
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self.s1 = 3
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self.res1 = True
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self.res2 = False
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self.arr2 = None
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self.arr3 = []
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self.arr4 = 345
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self.arr5 = [3]
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self.s51 = 1
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self.res51 = False
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self.s52 = 3
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self.res52 = True
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self.arr6 = [1, 3, 9, 14, 22]
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self.s61 = 22
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self.s62 = 3
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self.s63 = 16
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self.res61 = True
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self.res62 = True
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self.res63 = False
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self.arr7 = [1, 3, 9, 14, 22, 25]
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self.s71 = 22
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self.res71 = True
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self.s72 = 3
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self.res72 = True
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self.s73 = 58
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self.res73 = False
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def test_bin_search(self):
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# Test None input
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res = bin_search(self.arr2, self.s1)
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self.assertEqual(res, self.res2)
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# Test empty table
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res = bin_search(self.arr3, self.s1)
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self.assertEqual(res, self.res2)
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# Test strange input
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res = bin_search(self.arr4, self.s1)
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self.assertEqual(res, self.res2)
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# Testing length1 array
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res = bin_search(self.arr5, self.s51)
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self.assertEqual(res, self.res51)
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res = bin_search(self.arr5, self.s52)
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self.assertEqual(res, self.res52)
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# longer array easy
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res = bin_search(self.arr1, self.s1)
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self.assertEqual(res, self.res1)
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# longer array has to search / odd
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res = bin_search(self.arr6, self.s61)
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self.assertEqual(res, self.res61)
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res = bin_search(self.arr6, self.s62)
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self.assertEqual(res, self.res62)
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res = bin_search(self.arr6, self.s63)
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self.assertEqual(res, self.res63)
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# longer array has to search / even
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res = bin_search(self.arr7, self.s71)
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self.assertEqual(res, self.res71)
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res = bin_search(self.arr7, self.s72)
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self.assertEqual(res, self.res72)
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res = bin_search(self.arr7, self.s73)
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self.assertEqual(res, self.res73)
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if __name__ == '__main__':
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unittest.main()
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