| 1 | const { expect } = require('expect') |
| 2 | const sinon = require('sinon') |
| 3 | const { |
| 4 | FixedThreadPool, |
| 5 | DynamicThreadPool, |
| 6 | WorkerChoiceStrategies |
| 7 | } = require('../../../lib/index') |
| 8 | const { |
| 9 | WorkerChoiceStrategyContext |
| 10 | } = require('../../../lib/pools/selection-strategies/worker-choice-strategy-context') |
| 11 | const { |
| 12 | RoundRobinWorkerChoiceStrategy |
| 13 | } = require('../../../lib/pools/selection-strategies/round-robin-worker-choice-strategy') |
| 14 | const { |
| 15 | LessUsedWorkerChoiceStrategy |
| 16 | } = require('../../../lib/pools/selection-strategies/less-used-worker-choice-strategy') |
| 17 | const { |
| 18 | LessBusyWorkerChoiceStrategy |
| 19 | } = require('../../../lib/pools/selection-strategies/less-busy-worker-choice-strategy') |
| 20 | const { |
| 21 | FairShareWorkerChoiceStrategy |
| 22 | } = require('../../../lib/pools/selection-strategies/fair-share-worker-choice-strategy') |
| 23 | const { |
| 24 | WeightedRoundRobinWorkerChoiceStrategy |
| 25 | } = require('../../../lib/pools/selection-strategies/weighted-round-robin-worker-choice-strategy') |
| 26 | |
| 27 | describe('Worker choice strategy context test suite', () => { |
| 28 | const min = 1 |
| 29 | const max = 3 |
| 30 | let fixedPool, dynamicPool |
| 31 | |
| 32 | before(() => { |
| 33 | fixedPool = new FixedThreadPool( |
| 34 | max, |
| 35 | './tests/worker-files/thread/testWorker.js' |
| 36 | ) |
| 37 | dynamicPool = new DynamicThreadPool( |
| 38 | min, |
| 39 | max, |
| 40 | './tests/worker-files/thread/testWorker.js' |
| 41 | ) |
| 42 | }) |
| 43 | |
| 44 | afterEach(() => { |
| 45 | sinon.restore() |
| 46 | }) |
| 47 | |
| 48 | after(async () => { |
| 49 | await fixedPool.destroy() |
| 50 | await dynamicPool.destroy() |
| 51 | }) |
| 52 | |
| 53 | it('Verify that execute() return the worker chosen by the strategy with fixed pool', () => { |
| 54 | const workerChoiceStrategyContext = new WorkerChoiceStrategyContext( |
| 55 | fixedPool |
| 56 | ) |
| 57 | const WorkerChoiceStrategyStub = sinon.createStubInstance( |
| 58 | RoundRobinWorkerChoiceStrategy, |
| 59 | { |
| 60 | choose: sinon.stub().returns(0) |
| 61 | } |
| 62 | ) |
| 63 | expect(workerChoiceStrategyContext.workerChoiceStrategyType).toBe( |
| 64 | WorkerChoiceStrategies.ROUND_ROBIN |
| 65 | ) |
| 66 | workerChoiceStrategyContext.workerChoiceStrategies.set( |
| 67 | workerChoiceStrategyContext.workerChoiceStrategyType, |
| 68 | WorkerChoiceStrategyStub |
| 69 | ) |
| 70 | const chosenWorkerKey = workerChoiceStrategyContext.execute() |
| 71 | expect( |
| 72 | workerChoiceStrategyContext.workerChoiceStrategies.get( |
| 73 | workerChoiceStrategyContext.workerChoiceStrategyType |
| 74 | ).choose.calledOnce |
| 75 | ).toBe(true) |
| 76 | expect(chosenWorkerKey).toBe(0) |
| 77 | }) |
| 78 | |
| 79 | it('Verify that execute() return the worker chosen by the strategy with dynamic pool', () => { |
| 80 | const workerChoiceStrategyContext = new WorkerChoiceStrategyContext( |
| 81 | dynamicPool |
| 82 | ) |
| 83 | const WorkerChoiceStrategyStub = sinon.createStubInstance( |
| 84 | RoundRobinWorkerChoiceStrategy, |
| 85 | { |
| 86 | choose: sinon.stub().returns(0) |
| 87 | } |
| 88 | ) |
| 89 | expect(workerChoiceStrategyContext.workerChoiceStrategyType).toBe( |
| 90 | WorkerChoiceStrategies.ROUND_ROBIN |
| 91 | ) |
| 92 | workerChoiceStrategyContext.workerChoiceStrategies.set( |
| 93 | workerChoiceStrategyContext.workerChoiceStrategyType, |
| 94 | WorkerChoiceStrategyStub |
| 95 | ) |
| 96 | const chosenWorkerKey = workerChoiceStrategyContext.execute() |
| 97 | expect( |
| 98 | workerChoiceStrategyContext.workerChoiceStrategies.get( |
| 99 | workerChoiceStrategyContext.workerChoiceStrategyType |
| 100 | ).choose.calledOnce |
| 101 | ).toBe(true) |
| 102 | expect(chosenWorkerKey).toBe(0) |
| 103 | }) |
| 104 | |
| 105 | it('Verify that setWorkerChoiceStrategy() works with ROUND_ROBIN and fixed pool', () => { |
| 106 | const workerChoiceStrategyContext = new WorkerChoiceStrategyContext( |
| 107 | fixedPool |
| 108 | ) |
| 109 | expect( |
| 110 | workerChoiceStrategyContext.workerChoiceStrategies.get( |
| 111 | WorkerChoiceStrategies.ROUND_ROBIN |
| 112 | ).isDynamicPool |
| 113 | ).toBe(false) |
| 114 | expect( |
| 115 | workerChoiceStrategyContext.workerChoiceStrategies.get( |
| 116 | WorkerChoiceStrategies.ROUND_ROBIN |
| 117 | ) |
| 118 | ).toBeInstanceOf(RoundRobinWorkerChoiceStrategy) |
| 119 | expect(workerChoiceStrategyContext.workerChoiceStrategyType).toBe( |
| 120 | WorkerChoiceStrategies.ROUND_ROBIN |
| 121 | ) |
| 122 | workerChoiceStrategyContext.setWorkerChoiceStrategy( |
| 123 | WorkerChoiceStrategies.ROUND_ROBIN |
| 124 | ) |
| 125 | expect( |
| 126 | workerChoiceStrategyContext.workerChoiceStrategies.get( |
| 127 | WorkerChoiceStrategies.ROUND_ROBIN |
| 128 | ) |
| 129 | ).toBeInstanceOf(RoundRobinWorkerChoiceStrategy) |
| 130 | expect(workerChoiceStrategyContext.workerChoiceStrategyType).toBe( |
| 131 | WorkerChoiceStrategies.ROUND_ROBIN |
| 132 | ) |
| 133 | }) |
| 134 | |
| 135 | it('Verify that setWorkerChoiceStrategy() works with ROUND_ROBIN and dynamic pool', () => { |
| 136 | const workerChoiceStrategyContext = new WorkerChoiceStrategyContext( |
| 137 | dynamicPool |
| 138 | ) |
| 139 | expect( |
| 140 | workerChoiceStrategyContext.workerChoiceStrategies.get( |
| 141 | WorkerChoiceStrategies.ROUND_ROBIN |
| 142 | ).isDynamicPool |
| 143 | ).toBe(true) |
| 144 | expect( |
| 145 | workerChoiceStrategyContext.workerChoiceStrategies.get( |
| 146 | WorkerChoiceStrategies.ROUND_ROBIN |
| 147 | ) |
| 148 | ).toBeInstanceOf(RoundRobinWorkerChoiceStrategy) |
| 149 | expect(workerChoiceStrategyContext.workerChoiceStrategyType).toBe( |
| 150 | WorkerChoiceStrategies.ROUND_ROBIN |
| 151 | ) |
| 152 | workerChoiceStrategyContext.setWorkerChoiceStrategy( |
| 153 | WorkerChoiceStrategies.ROUND_ROBIN |
| 154 | ) |
| 155 | expect( |
| 156 | workerChoiceStrategyContext.workerChoiceStrategies.get( |
| 157 | WorkerChoiceStrategies.ROUND_ROBIN |
| 158 | ) |
| 159 | ).toBeInstanceOf(RoundRobinWorkerChoiceStrategy) |
| 160 | expect(workerChoiceStrategyContext.workerChoiceStrategyType).toBe( |
| 161 | WorkerChoiceStrategies.ROUND_ROBIN |
| 162 | ) |
| 163 | }) |
| 164 | |
| 165 | it('Verify that setWorkerChoiceStrategy() works with LESS_USED and fixed pool', () => { |
| 166 | const workerChoiceStrategyContext = new WorkerChoiceStrategyContext( |
| 167 | fixedPool |
| 168 | ) |
| 169 | expect( |
| 170 | workerChoiceStrategyContext.workerChoiceStrategies.get( |
| 171 | WorkerChoiceStrategies.LESS_USED |
| 172 | ).isDynamicPool |
| 173 | ).toBe(false) |
| 174 | workerChoiceStrategyContext.setWorkerChoiceStrategy( |
| 175 | WorkerChoiceStrategies.LESS_USED |
| 176 | ) |
| 177 | expect( |
| 178 | workerChoiceStrategyContext.workerChoiceStrategies.get( |
| 179 | WorkerChoiceStrategies.LESS_USED |
| 180 | ) |
| 181 | ).toBeInstanceOf(LessUsedWorkerChoiceStrategy) |
| 182 | expect(workerChoiceStrategyContext.workerChoiceStrategyType).toBe( |
| 183 | WorkerChoiceStrategies.LESS_USED |
| 184 | ) |
| 185 | }) |
| 186 | |
| 187 | it('Verify that setWorkerChoiceStrategy() works with LESS_USED and dynamic pool', () => { |
| 188 | const workerChoiceStrategyContext = new WorkerChoiceStrategyContext( |
| 189 | dynamicPool |
| 190 | ) |
| 191 | expect( |
| 192 | workerChoiceStrategyContext.workerChoiceStrategies.get( |
| 193 | WorkerChoiceStrategies.LESS_USED |
| 194 | ).isDynamicPool |
| 195 | ).toBe(true) |
| 196 | workerChoiceStrategyContext.setWorkerChoiceStrategy( |
| 197 | WorkerChoiceStrategies.LESS_USED |
| 198 | ) |
| 199 | expect( |
| 200 | workerChoiceStrategyContext.workerChoiceStrategies.get( |
| 201 | WorkerChoiceStrategies.LESS_USED |
| 202 | ) |
| 203 | ).toBeInstanceOf(LessUsedWorkerChoiceStrategy) |
| 204 | expect(workerChoiceStrategyContext.workerChoiceStrategyType).toBe( |
| 205 | WorkerChoiceStrategies.LESS_USED |
| 206 | ) |
| 207 | }) |
| 208 | |
| 209 | it('Verify that setWorkerChoiceStrategy() works with LESS_BUSY and fixed pool', () => { |
| 210 | const workerChoiceStrategyContext = new WorkerChoiceStrategyContext( |
| 211 | fixedPool |
| 212 | ) |
| 213 | expect( |
| 214 | workerChoiceStrategyContext.workerChoiceStrategies.get( |
| 215 | WorkerChoiceStrategies.LESS_BUSY |
| 216 | ).isDynamicPool |
| 217 | ).toBe(false) |
| 218 | workerChoiceStrategyContext.setWorkerChoiceStrategy( |
| 219 | WorkerChoiceStrategies.LESS_BUSY |
| 220 | ) |
| 221 | expect( |
| 222 | workerChoiceStrategyContext.workerChoiceStrategies.get( |
| 223 | WorkerChoiceStrategies.LESS_BUSY |
| 224 | ) |
| 225 | ).toBeInstanceOf(LessBusyWorkerChoiceStrategy) |
| 226 | expect(workerChoiceStrategyContext.workerChoiceStrategyType).toBe( |
| 227 | WorkerChoiceStrategies.LESS_BUSY |
| 228 | ) |
| 229 | }) |
| 230 | |
| 231 | it('Verify that setWorkerChoiceStrategy() works with LESS_BUSY and dynamic pool', () => { |
| 232 | const workerChoiceStrategyContext = new WorkerChoiceStrategyContext( |
| 233 | dynamicPool |
| 234 | ) |
| 235 | expect( |
| 236 | workerChoiceStrategyContext.workerChoiceStrategies.get( |
| 237 | WorkerChoiceStrategies.LESS_BUSY |
| 238 | ).isDynamicPool |
| 239 | ).toBe(true) |
| 240 | workerChoiceStrategyContext.setWorkerChoiceStrategy( |
| 241 | WorkerChoiceStrategies.LESS_BUSY |
| 242 | ) |
| 243 | expect( |
| 244 | workerChoiceStrategyContext.workerChoiceStrategies.get( |
| 245 | WorkerChoiceStrategies.LESS_BUSY |
| 246 | ) |
| 247 | ).toBeInstanceOf(LessBusyWorkerChoiceStrategy) |
| 248 | expect(workerChoiceStrategyContext.workerChoiceStrategyType).toBe( |
| 249 | WorkerChoiceStrategies.LESS_BUSY |
| 250 | ) |
| 251 | }) |
| 252 | |
| 253 | it('Verify that setWorkerChoiceStrategy() works with FAIR_SHARE and fixed pool', () => { |
| 254 | const workerChoiceStrategyContext = new WorkerChoiceStrategyContext( |
| 255 | fixedPool |
| 256 | ) |
| 257 | expect( |
| 258 | workerChoiceStrategyContext.workerChoiceStrategies.get( |
| 259 | WorkerChoiceStrategies.FAIR_SHARE |
| 260 | ).isDynamicPool |
| 261 | ).toBe(false) |
| 262 | workerChoiceStrategyContext.setWorkerChoiceStrategy( |
| 263 | WorkerChoiceStrategies.FAIR_SHARE |
| 264 | ) |
| 265 | expect( |
| 266 | workerChoiceStrategyContext.workerChoiceStrategies.get( |
| 267 | WorkerChoiceStrategies.FAIR_SHARE |
| 268 | ) |
| 269 | ).toBeInstanceOf(FairShareWorkerChoiceStrategy) |
| 270 | expect(workerChoiceStrategyContext.workerChoiceStrategyType).toBe( |
| 271 | WorkerChoiceStrategies.FAIR_SHARE |
| 272 | ) |
| 273 | }) |
| 274 | |
| 275 | it('Verify that setWorkerChoiceStrategy() works with FAIR_SHARE and dynamic pool', () => { |
| 276 | const workerChoiceStrategyContext = new WorkerChoiceStrategyContext( |
| 277 | dynamicPool |
| 278 | ) |
| 279 | expect( |
| 280 | workerChoiceStrategyContext.workerChoiceStrategies.get( |
| 281 | WorkerChoiceStrategies.FAIR_SHARE |
| 282 | ).isDynamicPool |
| 283 | ).toBe(true) |
| 284 | workerChoiceStrategyContext.setWorkerChoiceStrategy( |
| 285 | WorkerChoiceStrategies.FAIR_SHARE |
| 286 | ) |
| 287 | expect( |
| 288 | workerChoiceStrategyContext.workerChoiceStrategies.get( |
| 289 | WorkerChoiceStrategies.FAIR_SHARE |
| 290 | ) |
| 291 | ).toBeInstanceOf(FairShareWorkerChoiceStrategy) |
| 292 | expect(workerChoiceStrategyContext.workerChoiceStrategyType).toBe( |
| 293 | WorkerChoiceStrategies.FAIR_SHARE |
| 294 | ) |
| 295 | }) |
| 296 | |
| 297 | it('Verify that setWorkerChoiceStrategy() works with WEIGHTED_ROUND_ROBIN and fixed pool', () => { |
| 298 | const workerChoiceStrategyContext = new WorkerChoiceStrategyContext( |
| 299 | fixedPool |
| 300 | ) |
| 301 | expect( |
| 302 | workerChoiceStrategyContext.workerChoiceStrategies.get( |
| 303 | WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN |
| 304 | ).isDynamicPool |
| 305 | ).toBe(false) |
| 306 | workerChoiceStrategyContext.setWorkerChoiceStrategy( |
| 307 | WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN |
| 308 | ) |
| 309 | expect( |
| 310 | workerChoiceStrategyContext.workerChoiceStrategies.get( |
| 311 | WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN |
| 312 | ) |
| 313 | ).toBeInstanceOf(WeightedRoundRobinWorkerChoiceStrategy) |
| 314 | expect(workerChoiceStrategyContext.workerChoiceStrategyType).toBe( |
| 315 | WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN |
| 316 | ) |
| 317 | }) |
| 318 | |
| 319 | it('Verify that setWorkerChoiceStrategy() works with WEIGHTED_ROUND_ROBIN and dynamic pool', () => { |
| 320 | const workerChoiceStrategyContext = new WorkerChoiceStrategyContext( |
| 321 | dynamicPool |
| 322 | ) |
| 323 | expect( |
| 324 | workerChoiceStrategyContext.workerChoiceStrategies.get( |
| 325 | WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN |
| 326 | ).isDynamicPool |
| 327 | ).toBe(true) |
| 328 | workerChoiceStrategyContext.setWorkerChoiceStrategy( |
| 329 | WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN |
| 330 | ) |
| 331 | expect( |
| 332 | workerChoiceStrategyContext.workerChoiceStrategies.get( |
| 333 | WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN |
| 334 | ) |
| 335 | ).toBeInstanceOf(WeightedRoundRobinWorkerChoiceStrategy) |
| 336 | expect(workerChoiceStrategyContext.workerChoiceStrategyType).toBe( |
| 337 | WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN |
| 338 | ) |
| 339 | }) |
| 340 | }) |