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trie_unittest.py
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executable file
·128 lines (112 loc) · 4.18 KB
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#!/usr/bin/python -B
import unittest
from trie import Trie
class TestTrie(unittest.TestCase):
def setUp(self):
self.trie = Trie()
def _square_brackets(self, key):
return self.trie[key]
def test_basicAssignment(self):
self.trie["Foo"] = True
self.assertTrue(self.trie["Foo"])
self.assertRaises(KeyError, self._square_brackets, "Food")
self.assertEquals(1, len(self.trie))
self.assertEquals(3, self.trie.nodeCount())
self.assertTrue("Foo" in self.trie)
self.trie["Bar"] = None
self.assertTrue("Bar" in self.trie)
def test_basicRemoval(self):
self.trie["Foo"] = True
self.assertTrue(self.trie["Foo"])
del self.trie["Foo"]
self.assertRaises(KeyError, self._square_brackets, "Foo")
self.assertEquals(0, len(self.trie))
self.assertEquals(0, self.trie.nodeCount())
self.assertFalse("Foo" in self.trie)
def test_MixedTypes(self):
self.trie["Foo"] = True
self.trie[[1, 2, 3]] = True
self.assertTrue(self.trie["Foo"])
self.assertTrue(self.trie[[1, 2, 3]])
self.assertTrue([1, 2, 3] in self.trie)
self.assertTrue("Foo" in self.trie)
del self.trie[[1, 2, 3]]
self.assertFalse([1, 2, 3] in self.trie)
def test_Iteration(self):
self.trie["Foo"] = True
self.trie["Bar"] = True
self.trie["Grok"] = True
for k in self.trie:
self.assertTrue(k in self.trie)
self.assertTrue(self.trie[k])
def test_Addition(self):
self.trie["Foo"] = True
t2 = Trie()
t2["Food"] = True
t3 = t2 + self.trie
self.assertTrue("Foo" in self.trie)
self.assertFalse("Food" in self.trie)
self.assertTrue("Food" in t2)
self.assertFalse("Foo" in t2)
self.assertTrue("Foo" in t3)
self.assertTrue("Food" in t3)
def test_Subtraction(self):
self.trie["Food"] = True
self.trie["Foo"] = True
t2 = Trie()
t2["Food"] = True
t3 = self.trie - t2
t4 = t2 - self.trie
self.assertTrue("Food" in self.trie)
self.assertTrue("Foo" in self.trie)
self.assertTrue("Food" in t2)
self.assertTrue("Foo" in t3)
self.assertFalse("Food" in t3)
self.assertFalse("Foo" in t4)
self.assertFalse("Food" in t4)
def test_SelfAdd(self):
self.trie["Foo"] = True
t2 = Trie()
t2["Food"] = True
self.assertTrue("Foo" in self.trie)
self.assertFalse("Food" in self.trie)
self.assertTrue("Food" in t2)
self.assertFalse("Foo" in t2)
self.trie += t2
self.assertTrue("Foo" in self.trie)
self.assertTrue("Food" in self.trie)
def test_SelfSub(self):
self.trie["Foo"] = True
self.trie["Food"] = True
t2 = Trie()
t2["Food"] = True
self.assertTrue("Food" in self.trie)
self.assertTrue("Foo" in self.trie)
self.assertTrue("Food" in t2)
self.trie -= t2
self.assertFalse("Food" in self.trie)
self.assertTrue("Foo" in self.trie)
self.assertTrue("Food" in t2)
def test_SelfGet(self):
self.trie["Foo"] = True
self.assertTrue(self.trie["Foo"])
self.assertRaises(KeyError, self._square_brackets, "Food")
self.assertEquals("Bar", self.trie.get("Food", "Bar"))
self.assertEquals("Bar", self.trie.get("Food", default="Bar"))
self.assertTrue(self.trie.get("Foo"))
self.assertTrue(self.trie.get("Food") is None)
def test_KeysByPrefix(self):
self.trie["Foo"] = True
self.trie["Food"] = True
self.trie["Eggs"] = True
kset = self.trie.keys()
self.assertTrue("Foo" in kset)
self.assertTrue("Food" in kset)
self.assertTrue("Eggs" in kset)
kset = self.trie.keys("Foo")
self.assertTrue("Foo" in kset)
self.assertTrue("Food" in kset)
kset = self.trie.keys("Ox")
self.assertEquals(0, len(kset))
if __name__ == '__main__':
unittest.main()