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9df282a0 | 1 | import { expect } from 'expect' |
f8d5d8fd | 2 | |
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3 | import { |
4 | defaultQueueSize, | |
3a502712 | 5 | FixedPriorityQueue, |
9df282a0 | 6 | } from '../lib/fixed-priority-queue.cjs' |
f8d5d8fd | 7 | |
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8 | describe('Fixed priority queue test suite', () => { |
9 | it('Verify constructor() behavior', () => { | |
10 | expect(() => new FixedPriorityQueue('')).toThrow( | |
11 | new TypeError("Invalid fixed priority queue size: '' is not an integer") | |
12 | ) | |
13 | expect(() => new FixedPriorityQueue(-1)).toThrow( | |
14 | new RangeError('Invalid fixed priority queue size: -1 < 0') | |
15 | ) | |
16 | let fixedPriorityQueue = new FixedPriorityQueue() | |
17 | expect(fixedPriorityQueue.start).toBe(0) | |
18 | expect(fixedPriorityQueue.size).toBe(0) | |
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19 | expect(fixedPriorityQueue.nodeArray).toBeInstanceOf(Array) |
20 | expect(fixedPriorityQueue.capacity).toBe(defaultQueueSize) | |
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21 | expect(fixedPriorityQueue.enablePriority).toBe(false) |
22 | fixedPriorityQueue = new FixedPriorityQueue(2, true) | |
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23 | expect(fixedPriorityQueue.start).toBe(0) |
24 | expect(fixedPriorityQueue.size).toBe(0) | |
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25 | expect(fixedPriorityQueue.nodeArray).toBeInstanceOf(Array) |
26 | expect(fixedPriorityQueue.capacity).toBe(2) | |
fcfc3353 | 27 | expect(fixedPriorityQueue.enablePriority).toBe(true) |
9df282a0 | 28 | }) |
f8d5d8fd | 29 | |
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30 | it('Verify enqueue() behavior', () => { |
31 | const queueSize = 5 | |
fcfc3353 | 32 | const fixedPriorityQueue = new FixedPriorityQueue(queueSize, true) |
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33 | let rtSize = fixedPriorityQueue.enqueue(1) |
34 | expect(fixedPriorityQueue.start).toBe(0) | |
35 | expect(fixedPriorityQueue.size).toBe(1) | |
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36 | expect(rtSize).toBe(fixedPriorityQueue.size) |
37 | expect(fixedPriorityQueue.nodeArray).toMatchObject([ | |
3a502712 | 38 | { data: 1, priority: 0 }, |
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39 | ]) |
40 | expect(fixedPriorityQueue.capacity).toBe(queueSize) | |
41 | rtSize = fixedPriorityQueue.enqueue(2) | |
42 | expect(fixedPriorityQueue.start).toBe(0) | |
43 | expect(fixedPriorityQueue.size).toBe(2) | |
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44 | expect(rtSize).toBe(fixedPriorityQueue.size) |
45 | expect(fixedPriorityQueue.nodeArray).toMatchObject([ | |
46 | { data: 1, priority: 0 }, | |
3a502712 | 47 | { data: 2, priority: 0 }, |
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48 | ]) |
49 | expect(fixedPriorityQueue.capacity).toBe(queueSize) | |
50 | rtSize = fixedPriorityQueue.enqueue(3) | |
51 | expect(fixedPriorityQueue.start).toBe(0) | |
52 | expect(fixedPriorityQueue.size).toBe(3) | |
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53 | expect(rtSize).toBe(fixedPriorityQueue.size) |
54 | expect(fixedPriorityQueue.nodeArray).toMatchObject([ | |
55 | { data: 1, priority: 0 }, | |
56 | { data: 2, priority: 0 }, | |
3a502712 | 57 | { data: 3, priority: 0 }, |
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58 | ]) |
59 | expect(fixedPriorityQueue.capacity).toBe(queueSize) | |
60 | rtSize = fixedPriorityQueue.enqueue(3, -1) | |
61 | expect(fixedPriorityQueue.start).toBe(0) | |
62 | expect(fixedPriorityQueue.size).toBe(4) | |
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63 | expect(rtSize).toBe(fixedPriorityQueue.size) |
64 | expect(fixedPriorityQueue.nodeArray).toMatchObject([ | |
65 | { data: 3, priority: -1 }, | |
66 | { data: 1, priority: 0 }, | |
67 | { data: 2, priority: 0 }, | |
3a502712 | 68 | { data: 3, priority: 0 }, |
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69 | ]) |
70 | expect(fixedPriorityQueue.capacity).toBe(queueSize) | |
71 | rtSize = fixedPriorityQueue.enqueue(1, 1) | |
72 | expect(fixedPriorityQueue.start).toBe(0) | |
73 | expect(fixedPriorityQueue.size).toBe(5) | |
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74 | expect(rtSize).toBe(fixedPriorityQueue.size) |
75 | expect(fixedPriorityQueue.nodeArray).toMatchObject([ | |
76 | { data: 3, priority: -1 }, | |
77 | { data: 1, priority: 0 }, | |
78 | { data: 2, priority: 0 }, | |
79 | { data: 3, priority: 0 }, | |
3a502712 | 80 | { data: 1, priority: 1 }, |
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81 | ]) |
82 | expect(fixedPriorityQueue.capacity).toBe(queueSize) | |
83 | expect(() => fixedPriorityQueue.enqueue(4)).toThrow( | |
84 | new Error('Priority queue is full') | |
85 | ) | |
86 | }) | |
f8d5d8fd | 87 | |
6caee856 | 88 | it('Verify get() behavior', () => { |
fcfc3353 | 89 | const fixedPriorityQueue = new FixedPriorityQueue(defaultQueueSize, true) |
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90 | fixedPriorityQueue.enqueue(1) |
91 | fixedPriorityQueue.enqueue(2, -1) | |
92 | fixedPriorityQueue.enqueue(3) | |
93 | expect(fixedPriorityQueue.get(0)).toBe(2) | |
94 | expect(fixedPriorityQueue.get(1)).toBe(1) | |
95 | expect(fixedPriorityQueue.get(2)).toBe(3) | |
96 | expect(fixedPriorityQueue.get(3)).toBe(undefined) | |
97 | }) | |
98 | ||
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99 | it('Verify dequeue() behavior', () => { |
100 | const queueSize = 5 | |
fcfc3353 | 101 | const fixedPriorityQueue = new FixedPriorityQueue(queueSize, true) |
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102 | fixedPriorityQueue.enqueue(1) |
103 | fixedPriorityQueue.enqueue(2, -1) | |
104 | fixedPriorityQueue.enqueue(3) | |
105 | expect(fixedPriorityQueue.start).toBe(0) | |
106 | expect(fixedPriorityQueue.size).toBe(3) | |
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107 | expect(fixedPriorityQueue.capacity).toBe(queueSize) |
108 | let rtItem = fixedPriorityQueue.dequeue() | |
109 | expect(fixedPriorityQueue.start).toBe(1) | |
110 | expect(fixedPriorityQueue.size).toBe(2) | |
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111 | expect(rtItem).toBe(2) |
112 | expect(fixedPriorityQueue.nodeArray).toMatchObject([ | |
113 | { data: 2, priority: -1 }, | |
114 | { data: 1, priority: 0 }, | |
3a502712 | 115 | { data: 3, priority: 0 }, |
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116 | ]) |
117 | expect(fixedPriorityQueue.capacity).toBe(queueSize) | |
118 | rtItem = fixedPriorityQueue.dequeue() | |
119 | expect(fixedPriorityQueue.start).toBe(2) | |
120 | expect(fixedPriorityQueue.size).toBe(1) | |
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121 | expect(rtItem).toBe(1) |
122 | expect(fixedPriorityQueue.nodeArray).toMatchObject([ | |
123 | { data: 2, priority: -1 }, | |
124 | { data: 1, priority: 0 }, | |
3a502712 | 125 | { data: 3, priority: 0 }, |
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126 | ]) |
127 | expect(fixedPriorityQueue.capacity).toBe(queueSize) | |
128 | rtItem = fixedPriorityQueue.dequeue() | |
129 | expect(fixedPriorityQueue.start).toBe(3) | |
130 | expect(fixedPriorityQueue.size).toBe(0) | |
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131 | expect(rtItem).toBe(3) |
132 | expect(fixedPriorityQueue.nodeArray).toMatchObject([ | |
133 | { data: 2, priority: -1 }, | |
134 | { data: 1, priority: 0 }, | |
3a502712 | 135 | { data: 3, priority: 0 }, |
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136 | ]) |
137 | expect(fixedPriorityQueue.capacity).toBe(queueSize) | |
138 | rtItem = fixedPriorityQueue.dequeue() | |
139 | expect(fixedPriorityQueue.start).toBe(3) | |
140 | expect(fixedPriorityQueue.size).toBe(0) | |
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141 | expect(rtItem).toBe(undefined) |
142 | expect(fixedPriorityQueue.nodeArray).toMatchObject([ | |
143 | { data: 2, priority: -1 }, | |
144 | { data: 1, priority: 0 }, | |
3a502712 | 145 | { data: 3, priority: 0 }, |
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146 | ]) |
147 | expect(fixedPriorityQueue.capacity).toBe(queueSize) | |
148 | }) | |
f8d5d8fd | 149 | |
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150 | it('Verify iterator behavior', () => { |
151 | const fixedPriorityQueue = new FixedPriorityQueue() | |
152 | fixedPriorityQueue.enqueue(1) | |
153 | fixedPriorityQueue.enqueue(2) | |
154 | fixedPriorityQueue.enqueue(3) | |
155 | let i = fixedPriorityQueue.start + 1 | |
156 | for (const value of fixedPriorityQueue) { | |
157 | expect(value).toBe(i) | |
158 | ++i | |
159 | } | |
160 | fixedPriorityQueue.dequeue() | |
161 | i = fixedPriorityQueue.start + 1 | |
162 | for (const value of fixedPriorityQueue) { | |
163 | expect(value).toBe(i) | |
164 | ++i | |
165 | } | |
166 | }) | |
f8d5d8fd | 167 | |
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168 | it('Verify empty() behavior', () => { |
169 | const fixedPriorityQueue = new FixedPriorityQueue() | |
170 | expect(fixedPriorityQueue.empty()).toBe(true) | |
171 | fixedPriorityQueue.enqueue(1) | |
172 | expect(fixedPriorityQueue.empty()).toBe(false) | |
173 | fixedPriorityQueue.dequeue() | |
174 | expect(fixedPriorityQueue.empty()).toBe(true) | |
175 | }) | |
176 | ||
177 | it('Verify full() behavior', () => { | |
178 | const fixedPriorityQueue = new FixedPriorityQueue(2) | |
179 | expect(fixedPriorityQueue.full()).toBe(false) | |
180 | fixedPriorityQueue.enqueue(1) | |
181 | expect(fixedPriorityQueue.full()).toBe(false) | |
182 | fixedPriorityQueue.enqueue(2) | |
183 | expect(fixedPriorityQueue.full()).toBe(true) | |
184 | fixedPriorityQueue.dequeue() | |
185 | expect(fixedPriorityQueue.full()).toBe(false) | |
186 | }) | |
187 | ||
188 | it('Verify clear() behavior', () => { | |
189 | const fixedPriorityQueue = new FixedPriorityQueue() | |
190 | fixedPriorityQueue.start = 1 | |
191 | fixedPriorityQueue.size = 2 | |
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192 | fixedPriorityQueue.nodeArray = [ |
193 | { data: 2, priority: 0 }, | |
3a502712 | 194 | { data: 3, priority: 0 }, |
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195 | ] |
196 | fixedPriorityQueue.clear() | |
197 | expect(fixedPriorityQueue.start).toBe(0) | |
198 | expect(fixedPriorityQueue.size).toBe(0) | |
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199 | expect(fixedPriorityQueue.nodeArray).toMatchObject([ |
200 | { data: 2, priority: 0 }, | |
3a502712 | 201 | { data: 3, priority: 0 }, |
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202 | ]) |
203 | }) | |
204 | }) |