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|
<!DOCTYPE html>
<html>
<!--
Copyright 2007 The Closure Library Authors. All Rights Reserved.
Use of this source code is governed by the Apache License, Version 2.0.
See the COPYING file for details.
-->
<!--
-->
<head>
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>Closure Unit Tests - goog.structs.Trie</title>
</script>
<script src="../base.js"></script>
<script>
goog.require('goog.object');
goog.require('goog.structs');
goog.require('goog.structs.Trie');
goog.require('goog.testing.jsunit');
</script>
</head>
<body>
<script>
function makeTrie() {
var trie = new goog.structs.Trie();
trie.add('hello', 1);
trie.add('hi', 'howdy');
trie.add('', 'an empty string key');
trie.add('empty value', '');
trie.add('zero', 0);
trie.add('object', {});
trie.add('null', null);
trie.add('hello, world', 2);
trie.add('world', {});
return trie;
}
function checkTrie(trie) {
assertEquals('get, should be 1', trie.get('hello'), 1);
assertEquals('get, should be "howdy"', trie.get('hi'), 'howdy');
assertEquals('get, should be "an empty string key"', trie.get(''),
'an empty string key');
assertEquals('get, should be ""', trie.get('empty value'), '');
assertEquals('get, should be ""', typeof trie.get('empty value'), 'string');
assertEquals('get, should be an object', typeof trie.get('object'), 'object');
assertEquals('get, should be 0', trie.get('zero'), 0);
assertEquals('get "null", should be null', trie.get('null'), null);
assertEquals('get, should be 2', trie.get('hello, world'), 2);
assertEquals('get, should be an object', typeof trie.get('world'), 'object');
}
function testTrieFormation() {
var t = makeTrie();
checkTrie(t);
}
function testFailureOfMultipleAdds() {
var t = new goog.structs.Trie();
t.add('hello', 'testing');
assertThrows('Error should be thrown when same key added twice.', function() {
t.add('hello', 'test');
});
t = new goog.structs.Trie();
t.add('null', null);
assertThrows('Error should be thrown when same key added twice.', function() {
t.add('null', 'hi!');
});
t = new goog.structs.Trie();
t.add('null', 'blah');
assertThrows('Error should be thrown when same key added twice.', function() {
t.add('null', null);
});
}
function testTrieClone() {
var trieOne = makeTrie();
var trieTwo = new goog.structs.Trie(trieOne);
checkTrie(trieTwo);
}
function testTrieFromObject() {
var someObject = {'hello' : 1,
'hi' : 'howdy',
'' : 'an empty string key',
'empty value' : '',
'object' : {},
'zero' : 0,
'null' : null,
'hello, world' : 2,
'world' : {}};
var trie = new goog.structs.Trie(someObject);
checkTrie(trie);
}
function testTrieGetValues() {
var trie = makeTrie();
var values = trie.getValues();
assertTrue('getValues, should contain "howdy"',
goog.object.contains(values, 'howdy'));
assertTrue('getValues, should contain 1', goog.object.contains(values, 1));
assertTrue('getValues, should contain 0', goog.object.contains(values, 0));
assertTrue('getValues, should contain ""', goog.object.contains(values, ''));
assertTrue('getValues, should contain null',
goog.object.contains(values, null));
assertEquals('goog.structs.getCount(getValues()) should be 9',
goog.structs.getCount(values), 9);
}
function testTrieGetKeys() {
var trie = makeTrie();
var keys = trie.getKeys();
assertTrue('getKeys, should contain "hello"',
goog.object.contains(keys, 'hello'));
assertTrue('getKeys, should contain "empty value"',
goog.object.contains(keys, 'empty value'));
assertTrue('getKeys, should contain ""', goog.object.contains(keys, ''));
assertTrue('getKeys, should contain "zero"',
goog.object.contains(keys, 'zero'));
assertEquals('goog.structs.getCount(getKeys()) should be 9',
goog.structs.getCount(keys), 9);
}
function testTrieCount() {
var trieOne = makeTrie();
var trieTwo = new goog.structs.Trie();
assertEquals('count, should be 9', trieOne.getCount(), 9);
assertEquals('count, should be 0', trieTwo.getCount(), 0);
}
function testRemoveKeyFromTrie() {
var trie = new goog.structs.Trie();
trie.add('key1', 'value1');
trie.add('key2', 'value2');
trie.add('ke', 'value3');
trie.add('zero', 0);
trie.remove('key2');
assertEquals('get "key1", should be "value1"', trie.get('key1'), 'value1');
assertUndefined('get "key2", should be undefined', trie.get('key2'));
trie.remove('zero');
assertUndefined('get "zero", should be undefined', trie.get('zero'));
trie.remove('ke');
assertUndefined('get "ke", should be undefined', trie.get('ke'));
assertEquals('get "key1", should be "value1"', trie.get('key1'), 'value1');
trie.add('a', 'value4');
assertTrue('testing internal structure, a should be a child',
'a' in trie.childNodes_);
trie.remove('a');
assertFalse('testing internal structure, a should no longer be a child',
'a' in trie.childNodes_);
trie.add('xyza', 'value');
trie.remove('xyza', 'value');
assertFalse('Should not have "x"', 'x' in trie.childNodes_);
trie.add('xyza', null);
assertTrue('Should have "x"', 'x' in trie.childNodes_);
trie.remove('xyza');
assertFalse('Should not have "x"', 'x' in trie.childNodes_);
trie.add('xyza', 'value');
trie.add('xb', 'value');
trie.remove('xyza');
assertTrue('get "x" should be defined', 'x' in trie.childNodes_);
assertFalse('get "y" should be undefined',
'y' in trie.childNodes_['x'].childNodes_);
}
function testRemoveKeyFromTrieWithNulls() {
var trie = new goog.structs.Trie();
trie.add('key1', null);
trie.add('key2', 'value2');
trie.add('ke', 'value3');
trie.add('zero', 0);
trie.remove('key2');
assertEquals('get "key1", should be null', trie.get('key1'), null);
assertUndefined('get "key2", should be undefined', trie.get('key2'));
trie.remove('zero');
assertUndefined('get "zero", should be undefined', trie.get('zero'));
trie.remove('ke');
assertUndefined('get "ke", should be undefined', trie.get('ke'));
assertEquals('get "key1", should be null', trie.get('key1'), null);
trie.add('a', 'value4');
assertTrue('testing internal structure, a should be a child',
'a' in trie.childNodes_);
trie.remove('a');
assertFalse('testing internal structure, a should no longer be a child',
'a' in trie.childNodes_);
trie.add('xyza', null);
trie.add('xb', 'value');
trie.remove('xyza');
assertTrue('Should have "x"', 'x' in trie.childNodes_);
assertFalse('Should not have "y"',
'y' in trie.childNodes_['x'].childNodes_);
}
function testRemoveKeyException() {
var trie = new goog.structs.Trie();
trie.add('abcdefg', 'value');
trie.add('abcz', 'value');
trie.add('abc', 'value');
assertThrows('Remove should throw an error on removal of non-existent key',
function() {
trie.remove('abcdefge');
});
}
function testTrieIsEmpty() {
var trieOne = new goog.structs.Trie();
var trieTwo = makeTrie();
assertTrue('isEmpty, should be empty', trieOne.isEmpty());
assertFalse('isEmpty, should not be empty', trieTwo.isEmpty());
trieOne.add('', 1);
assertFalse('isEmpty, should not be empty', trieTwo.isEmpty());
trieOne.remove('');
assertTrue('isEmpty, should be empty', trieOne.isEmpty());
trieOne.add('', 1);
trieOne.add('a', 1);
trieOne.remove('a');
assertFalse('isEmpty, should not be empty', trieOne.isEmpty());
trieOne.remove('');
assertTrue('isEmpty, should be empty', trieOne.isEmpty());
trieOne.add('', 1);
trieOne.add('a', 1);
trieOne.remove('');
assertFalse('isEmpty, should not be empty', trieOne.isEmpty());
trieOne.remove('a');
assertTrue('isEmpty, should be empty', trieOne.isEmpty());
}
function testTrieClear() {
var trie = new goog.structs.Trie();
trie.add('key1', 'value1');
trie.add('key2', 'value2');
trie.add('key3', null);
trie.clear();
assertUndefined('get key1, should be undefined', trie.get('key1'));
assertUndefined('get key2, should be undefined', trie.get('key2'));
assertUndefined('get key3, should be undefined', trie.get('key3'));
}
function testTrieContainsKey() {
var trie = makeTrie();
assertTrue('containsKey, should contain "hello"', trie.containsKey('hello'));
assertTrue('containsKey, should contain "hi"', trie.containsKey('hi'));
assertTrue('containsKey, should contain ""', trie.containsKey(''));
assertTrue('containsKey, should contain "empty value"',
trie.containsKey('empty value'));
assertTrue('containsKey, should contain "object"',
trie.containsKey('object'));
assertTrue('containsKey, should contain "zero"', trie.containsKey('zero'));
assertTrue('containsKey, should contain "null"', trie.containsKey('null'));
assertFalse('containsKey, should not contain "blah"',
trie.containsKey('blah'));
trie.remove('');
trie.remove('hi');
trie.remove('zero');
trie.remove('null');
assertFalse('containsKey, should not contain "zero"',
trie.containsKey('zero'));
assertFalse('containsKey, should not contain ""', trie.containsKey(''));
assertFalse('containsKey, should not contain "hi"', trie.containsKey('hi'));
assertFalse('containsKey, should not contain "null"',
trie.containsKey('null'));
}
function testTrieContainsValue() {
var trie = makeTrie();
assertTrue('containsValue, should be true, should contain 1',
trie.containsValue(1));
assertTrue('containsValue, should be true, should contain "howdy"',
trie.containsValue('howdy'));
assertTrue('containsValue, should be true, should contain ""',
trie.containsValue(''));
assertTrue('containsValue, should be true, should contain 0',
trie.containsValue(0));
assertTrue('containsValue, should be true, should contain null',
trie.containsValue(null));
assertTrue('containsValue, should be true, should ' +
'contain "an empty string key"',
trie.containsValue('an empty string key'));
assertFalse('containsValue, should be false, should not contain "blah"',
trie.containsValue('blah'));
trie.remove('empty value');
trie.remove('zero');
assertFalse('containsValue, should be false, should not contain 0',
trie.containsValue(0));
assertFalse('containsValue, should be false, should not contain ""',
trie.containsValue(''));
}
function testTrieHandlingOfEmptyStrings() {
var trie = new goog.structs.Trie();
assertEquals('get, should be undefined', trie.get(''), undefined);
assertFalse('containsValue, should be false', trie.containsValue(''));
assertFalse('containsKey, should be false', trie.containsKey(''));
trie.add('', 'test');
trie.add('test2', '');
assertTrue('containsValue, should be true', trie.containsValue(''));
assertTrue('containsKey, should be true', trie.containsKey(''));
assertEquals('get, should be "test"', trie.get(''), 'test');
assertEquals('get, should be ""', trie.get('test2'), '');
trie.remove('');
trie.remove('test2');
assertEquals('get, should be undefined', trie.get(''), undefined);
assertFalse('containsValue, should be false', trie.containsValue(''));
assertFalse('containsKey, should be false', trie.containsKey(''));
}
function testPrefixOptionOnGetKeys() {
var trie = new goog.structs.Trie();
trie.add('abcdefg', 'one');
trie.add('abcdefghijk', 'two');
trie.add('abcde', 'three');
trie.add('abcq', null);
trie.add('abc', 'four');
trie.add('xyz', 'five');
assertEquals('getKeys, should be 1', trie.getKeys('xy').length, 1);
assertEquals('getKeys, should be 1', trie.getKeys('xyz').length, 1);
assertEquals('getKeys, should be 1', trie.getKeys('x').length, 1);
assertEquals('getKeys, should be 4', trie.getKeys('abc').length, 5);
assertEquals('getKeys, should be 2', trie.getKeys('abcdef').length, 2);
assertEquals('getKeys, should be 0', trie.getKeys('abcdefgi').length, 0);
}
function testGetKeyAndPrefixes() {
var trie = makeTrie();
// Note: trie has one of its keys as ''
assertEquals('getKeyAndPrefixes, should be 2',
2,
goog.object.getCount(trie.getKeyAndPrefixes('world')));
assertEquals('getKeyAndPrefixes, should be 2',
2,
goog.object.getCount(trie.getKeyAndPrefixes('hello')));
assertEquals('getKeyAndPrefixes, should be 2',
2,
goog.object.getCount(trie.getKeyAndPrefixes('hello,')));
assertEquals('getKeyAndPrefixes, should be 3',
3,
goog.object.getCount(trie.getKeyAndPrefixes('hello, world')));
assertEquals('getKeyAndPrefixes, should be 1',
1,
goog.object.getCount(trie.getKeyAndPrefixes('hell')));
}
function testGetKeyAndPrefixesStartIndex() {
var trie = new goog.structs.Trie();
trie.add('abcdefg', 'one');
trie.add('bcdefg', 'two');
trie.add('abcdefghijk', 'three');
trie.add('abcde', 'four');
trie.add('abcq', null);
trie.add('q', null);
trie.add('abc', 'five');
trie.add('xyz', 'six');
assertEquals('getKeyAndPrefixes, should be 3',
3,
goog.object.getCount(trie.getKeyAndPrefixes('abcdefg', 0)));
assertEquals('getKeyAndPrefixes, should be 1',
1,
goog.object.getCount(trie.getKeyAndPrefixes('abcdefg', 1)));
assertEquals('getKeyAndPrefixes, should be 1',
1,
goog.object.getCount(trie.getKeyAndPrefixes('abcq', 3)));
assertEquals('getKeyAndPrefixes, should be 0',
0,
goog.object.getCount(trie.getKeyAndPrefixes('abcd', 3)));
}
</script>
</body>
</html>
|
