public void test_serialization() {
WordTrie wt = new WordTrie();
wt.add("WORD");
byte[] s = wt.serialize();
wt = null;
System.gc();
WordTrie n = WordTrie.deserialize(s);
Assert.assertNotNull(n);
Assert.assertTrue(n.contains("WORD"));
}
/*
* Test that functionality is maintained under high load.
*/
public void test_load() {
WordTrie wt = new WordTrie();
final int TEST_LIMIT = 5000;
for (int i = 0; i < TEST_LIMIT; ++i) {
wt.add("WORD" + characterSequence(i));
}
for (int i = 0; i < TEST_LIMIT; ++i) {
boolean t =
wt.contains("WORD" + characterSequence(i))
&& wt.containsPrefix("WORD" + characterSequence(i));
Assert.assertTrue(t);
}
}
/*
* Test class's functionality and error handling
*/
public void test_functional() {
WordTrie wt = new WordTrie();
int r;
boolean t;
// Newly constructed trie should not contain any words
t = wt.contains(null);
Assert.assertFalse(t);
t = wt.contains("");
Assert.assertFalse(t);
t = wt.contains("word");
Assert.assertFalse(t);
t = wt.contains("1@��$%^&*");
Assert.assertFalse(t);
// Test adding words to trie
r = wt.add(null);
Assert.assertFalse(r > 0);
t = wt.contains(null);
Assert.assertFalse(t);
r = wt.add("");
Assert.assertFalse(r > 0);
t = wt.contains("");
Assert.assertFalse(t);
r = wt.add("1@��$%^&* /~");
Assert.assertFalse(r > 0);
t = wt.contains("1@��$%^&* /~");
Assert.assertFalse(t);
r = wt.add("lower");
Assert.assertFalse(r > 0);
t = wt.contains("lower");
Assert.assertFalse(t);
r = wt.add("UPPERlower");
Assert.assertFalse(r > 0);
t = wt.contains("UPPERlower");
Assert.assertFalse(t);
final String longString = "LONGLONGLONGLONGLONGLONGLONGLONGLONGLONGLONGLONGLONGLONGLONG";
r = wt.add(longString);
Assert.assertTrue(r >= 0);
t = wt.contains(longString);
Assert.assertTrue(t);
// Test adding similar words
r = wt.add("WORD");
Assert.assertTrue(r >= 0);
t = wt.contains("WORD");
Assert.assertTrue(t);
r = wt.add("PREFIXWORD");
Assert.assertTrue(r >= 0);
r = wt.add("WORDSUFFIX");
Assert.assertTrue(r >= 0);
r = wt.add("PREFIXWORDSUFFIX");
Assert.assertTrue(r >= 0);
r = wt.add("DROW");
Assert.assertTrue(r >= 0);
t =
wt.contains("WORD")
&& wt.contains("PREFIXWORD")
&& wt.contains("PREFIXWORD")
&& wt.contains("PREFIXWORDSUFFIX")
&& wt.contains("DROW");
Assert.assertTrue(t);
// Add duplicate entry
r = wt.add("WORD");
Assert.assertTrue(r >= 0);
t = wt.contains("WORD");
Assert.assertTrue(t);
// Prefix checking
wt.add("ABCD");
t =
wt.containsPrefix("")
&& wt.containsPrefix("A")
&& wt.containsPrefix("AB")
&& wt.containsPrefix("ABC")
&& wt.containsPrefix("ABCD");
Assert.assertTrue(t);
t =
wt.containsPrefix("B")
|| wt.containsPrefix("BCD")
|| wt.containsPrefix("ABD")
|| wt.containsPrefix("ABCDE");
Assert.assertFalse(t);
t = wt.containsPrefix(null);
Assert.assertFalse(t);
}