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57 lines
979 B
Python
57 lines
979 B
Python
"""
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Unit tests for the Hash Map table implementation
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@jlengrand
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2013/11
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"""
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from hm import HashMap
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import unittest
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class test_hash_map(unittest.TestCase):
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def test_hash_size(self):
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hm = HashMap()
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self.assertEqual(hm._hash_size, 513)
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hm = HashMap(1025)
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self.assertEqual(hm._hash_size, 1025)
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def test_size(self):
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hm = HashMap()
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self.assertEqual(hm.size(), 0)
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def test__hash(self):
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hm = HashMap()
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value = "a"
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self.assertEqual(hm._hash(value), ord(value))
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value = "test"
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self.assertEqual(hm._hash(value), 208)
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value = ""
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self.assertRaises(Exception, lambda x : hm._hash(value))
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def test_add(self):
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hm = HashMap()
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hm.add("a")
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self.assertEqual(hm.size(), 1)
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# Tests Collision
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self.assertRaises(Exception, lambda x : hm.add(a))
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self.assertEqual(hm.size(), 1)
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def test_get(self):
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hm = HashMap()
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value = ""
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self.assertRaises(Exception, lambda x : hm.get(value))
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if __name__ == "__main__":
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unittest.main()
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