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1 // Copyright 2009 the V8 project authors. All rights reserved. | 1 // Copyright 2009 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | 27 |
28 // Load the Splay tree implementation from <project root>/tools. | 28 // Load the Splay tree implementation from <project root>/tools. |
29 // Files: tools/splaytree.js | 29 // Files: tools/splaytree.js |
30 | 30 |
31 | 31 |
32 (function testIsEmpty() { | 32 (function testIsEmpty() { |
33 var tree = new goog.structs.SplayTree(); | 33 var tree = new SplayTree(); |
34 assertTrue(tree.isEmpty()); | 34 assertTrue(tree.isEmpty()); |
35 tree.insert(0, 'value'); | 35 tree.insert(0, 'value'); |
36 assertFalse(tree.isEmpty()); | 36 assertFalse(tree.isEmpty()); |
37 })(); | 37 })(); |
38 | 38 |
39 | 39 |
40 (function testExportValues() { | 40 (function testExportValues() { |
41 var tree = new goog.structs.SplayTree(); | 41 var tree = new SplayTree(); |
42 assertArrayEquals([], tree.exportValues()); | 42 assertArrayEquals([], tree.exportValues()); |
43 tree.insert(0, 'value'); | 43 tree.insert(0, 'value'); |
44 assertArrayEquals(['value'], tree.exportValues()); | 44 assertArrayEquals(['value'], tree.exportValues()); |
45 tree.insert(0, 'value'); | 45 tree.insert(0, 'value'); |
46 assertArrayEquals(['value'], tree.exportValues()); | 46 assertArrayEquals(['value'], tree.exportValues()); |
47 })(); | 47 })(); |
48 | 48 |
49 | 49 |
50 function createSampleTree() { | 50 function createSampleTree() { |
51 // Creates the following tree: | 51 // Creates the following tree: |
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72 right: { key: 90, value: 90, | 72 right: { key: 90, value: 90, |
73 left: { key: 70, value: 70, left: null, | 73 left: { key: 70, value: 70, left: null, |
74 right: { key: 80, value: 80, | 74 right: { key: 80, value: 80, |
75 left: null, right: null } }, | 75 left: null, right: null } }, |
76 right: { key: 100, value: 100, | 76 right: { key: 100, value: 100, |
77 left: null, right: null } } } }; | 77 left: null, right: null } } } }; |
78 }; | 78 }; |
79 | 79 |
80 | 80 |
81 (function testSplay() { | 81 (function testSplay() { |
82 var tree = new goog.structs.SplayTree(); | 82 var tree = new SplayTree(); |
83 tree.root_ = createSampleTree(); | 83 tree.root_ = createSampleTree(); |
84 assertArrayEquals(['50', '30', '60', '10', '40', '90', '20', '70', '100', '15'
, '80'], | 84 assertArrayEquals(['50', '30', '60', '10', '40', '90', '20', '70', '100', '15'
, '80'], |
85 tree.exportValues()); | 85 tree.exportValues()); |
86 tree.splay_(50); | 86 tree.splay_(50); |
87 assertArrayEquals(['50', '30', '60', '10', '40', '90', '20', '70', '100', '15'
, '80'], | 87 assertArrayEquals(['50', '30', '60', '10', '40', '90', '20', '70', '100', '15'
, '80'], |
88 tree.exportValues()); | 88 tree.exportValues()); |
89 tree.splay_(80); | 89 tree.splay_(80); |
90 assertArrayEquals(['80', '60', '90', '50', '70', '100', '30', '10', '40', '20'
, '15'], | 90 assertArrayEquals(['80', '60', '90', '50', '70', '100', '30', '10', '40', '20'
, '15'], |
91 tree.exportValues()); | 91 tree.exportValues()); |
92 })(); | 92 })(); |
93 | 93 |
94 | 94 |
95 (function testInsert() { | 95 (function testInsert() { |
96 var tree = new goog.structs.SplayTree(); | 96 var tree = new SplayTree(); |
97 tree.insert(5, 'root'); | 97 tree.insert(5, 'root'); |
98 tree.insert(3, 'left'); | 98 tree.insert(3, 'left'); |
99 assertArrayEquals(['left', 'root'], tree.exportValues()); | 99 assertArrayEquals(['left', 'root'], tree.exportValues()); |
100 tree.insert(7, 'right'); | 100 tree.insert(7, 'right'); |
101 assertArrayEquals(['right', 'root', 'left'], tree.exportValues()); | 101 assertArrayEquals(['right', 'root', 'left'], tree.exportValues()); |
102 })(); | 102 })(); |
103 | 103 |
104 | 104 |
105 (function testFind() { | 105 (function testFind() { |
106 var tree = new goog.structs.SplayTree(); | 106 var tree = new SplayTree(); |
107 tree.insert(5, 'root'); | 107 tree.insert(5, 'root'); |
108 tree.insert(3, 'left'); | 108 tree.insert(3, 'left'); |
109 tree.insert(7, 'right'); | 109 tree.insert(7, 'right'); |
110 assertEquals('root', tree.find(5).value); | 110 assertEquals('root', tree.find(5).value); |
111 assertEquals('left', tree.find(3).value); | 111 assertEquals('left', tree.find(3).value); |
112 assertEquals('right', tree.find(7).value); | 112 assertEquals('right', tree.find(7).value); |
113 assertEquals(null, tree.find(0)); | 113 assertEquals(null, tree.find(0)); |
114 assertEquals(null, tree.find(100)); | 114 assertEquals(null, tree.find(100)); |
115 assertEquals(null, tree.find(-100)); | 115 assertEquals(null, tree.find(-100)); |
116 })(); | 116 })(); |
117 | 117 |
118 | 118 |
119 (function testFindMin() { | 119 (function testFindMin() { |
120 var tree = new goog.structs.SplayTree(); | 120 var tree = new SplayTree(); |
121 assertEquals(null, tree.findMin()); | 121 assertEquals(null, tree.findMin()); |
122 tree.insert(5, 'root'); | 122 tree.insert(5, 'root'); |
123 tree.insert(3, 'left'); | 123 tree.insert(3, 'left'); |
124 tree.insert(7, 'right'); | 124 tree.insert(7, 'right'); |
125 assertEquals('left', tree.findMin().value); | 125 assertEquals('left', tree.findMin().value); |
126 })(); | 126 })(); |
127 | 127 |
128 | 128 |
129 (function testFindMax() { | 129 (function testFindMax() { |
130 var tree = new goog.structs.SplayTree(); | 130 var tree = new SplayTree(); |
131 assertEquals(null, tree.findMax()); | 131 assertEquals(null, tree.findMax()); |
132 tree.insert(5, 'root'); | 132 tree.insert(5, 'root'); |
133 tree.insert(3, 'left'); | 133 tree.insert(3, 'left'); |
134 tree.insert(7, 'right'); | 134 tree.insert(7, 'right'); |
135 assertEquals('right', tree.findMax().value); | 135 assertEquals('right', tree.findMax().value); |
136 })(); | 136 })(); |
137 | 137 |
138 | 138 |
139 (function testFindGreatestLessThan() { | 139 (function testFindGreatestLessThan() { |
140 var tree = new goog.structs.SplayTree(); | 140 var tree = new SplayTree(); |
141 assertEquals(null, tree.findGreatestLessThan(10)); | 141 assertEquals(null, tree.findGreatestLessThan(10)); |
142 tree.insert(5, 'root'); | 142 tree.insert(5, 'root'); |
143 tree.insert(3, 'left'); | 143 tree.insert(3, 'left'); |
144 tree.insert(7, 'right'); | 144 tree.insert(7, 'right'); |
145 assertEquals('right', tree.findGreatestLessThan(10).value); | 145 assertEquals('right', tree.findGreatestLessThan(10).value); |
146 assertEquals('right', tree.findGreatestLessThan(7).value); | 146 assertEquals('right', tree.findGreatestLessThan(7).value); |
147 assertEquals('root', tree.findGreatestLessThan(6).value); | 147 assertEquals('root', tree.findGreatestLessThan(6).value); |
148 assertEquals('left', tree.findGreatestLessThan(4).value); | 148 assertEquals('left', tree.findGreatestLessThan(4).value); |
149 assertEquals(null, tree.findGreatestLessThan(2)); | 149 assertEquals(null, tree.findGreatestLessThan(2)); |
150 })(); | 150 })(); |
151 | 151 |
152 | 152 |
153 (function testRemove() { | 153 (function testRemove() { |
154 var tree = new goog.structs.SplayTree(); | 154 var tree = new SplayTree(); |
155 assertThrows('tree.remove(5)'); | 155 assertThrows('tree.remove(5)'); |
156 tree.insert(5, 'root'); | 156 tree.insert(5, 'root'); |
157 tree.insert(3, 'left'); | 157 tree.insert(3, 'left'); |
158 tree.insert(7, 'right'); | 158 tree.insert(7, 'right'); |
159 assertThrows('tree.remove(1)'); | 159 assertThrows('tree.remove(1)'); |
160 assertThrows('tree.remove(6)'); | 160 assertThrows('tree.remove(6)'); |
161 assertThrows('tree.remove(10)'); | 161 assertThrows('tree.remove(10)'); |
162 assertEquals('root', tree.remove(5).value); | 162 assertEquals('root', tree.remove(5).value); |
163 assertEquals('left', tree.remove(3).value); | 163 assertEquals('left', tree.remove(3).value); |
164 assertEquals('right', tree.remove(7).value); | 164 assertEquals('right', tree.remove(7).value); |
165 assertArrayEquals([], tree.exportValues()); | 165 assertArrayEquals([], tree.exportValues()); |
166 })(); | 166 })(); |
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