const {
WeightedRoundRobinWorkerChoiceStrategy
} = require('../../../lib/pools/selection-strategies/weighted-round-robin-worker-choice-strategy')
-const {
- DynamicPoolWorkerChoiceStrategy
-} = require('../../../lib/pools/selection-strategies/dynamic-pool-worker-choice-strategy')
describe('Worker choice strategy context test suite', () => {
const min = 1
await dynamicPool.destroy()
})
+ it('Verify that constructor() initializes the context with all the available worker choice strategies', () => {
+ const workerChoiceStrategyContext = new WorkerChoiceStrategyContext(
+ fixedPool
+ )
+ expect(workerChoiceStrategyContext.workerChoiceStrategies.size).toBe(
+ Object.keys(WorkerChoiceStrategies).length
+ )
+ })
+
it('Verify that execute() return the worker chosen by the strategy with fixed pool', () => {
const workerChoiceStrategyContext = new WorkerChoiceStrategyContext(
fixedPool
choose: sinon.stub().returns(0)
}
)
- workerChoiceStrategyContext.workerChoiceStrategy = WorkerChoiceStrategyStub
+ expect(workerChoiceStrategyContext.workerChoiceStrategyType).toBe(
+ WorkerChoiceStrategies.ROUND_ROBIN
+ )
+ workerChoiceStrategyContext.workerChoiceStrategies.set(
+ workerChoiceStrategyContext.workerChoiceStrategyType,
+ WorkerChoiceStrategyStub
+ )
const chosenWorkerKey = workerChoiceStrategyContext.execute()
expect(
- workerChoiceStrategyContext.workerChoiceStrategy.choose.calledOnce
+ workerChoiceStrategyContext.workerChoiceStrategies.get(
+ workerChoiceStrategyContext.workerChoiceStrategyType
+ ).choose.calledOnce
).toBe(true)
expect(chosenWorkerKey).toBe(0)
})
choose: sinon.stub().returns(0)
}
)
- workerChoiceStrategyContext.workerChoiceStrategy = WorkerChoiceStrategyStub
+ expect(workerChoiceStrategyContext.workerChoiceStrategyType).toBe(
+ WorkerChoiceStrategies.ROUND_ROBIN
+ )
+ workerChoiceStrategyContext.workerChoiceStrategies.set(
+ workerChoiceStrategyContext.workerChoiceStrategyType,
+ WorkerChoiceStrategyStub
+ )
const chosenWorkerKey = workerChoiceStrategyContext.execute()
expect(
- workerChoiceStrategyContext.workerChoiceStrategy.choose.calledOnce
+ workerChoiceStrategyContext.workerChoiceStrategies.get(
+ workerChoiceStrategyContext.workerChoiceStrategyType
+ ).choose.calledOnce
).toBe(true)
expect(chosenWorkerKey).toBe(0)
})
const workerChoiceStrategyContext = new WorkerChoiceStrategyContext(
fixedPool
)
+ expect(
+ workerChoiceStrategyContext.workerChoiceStrategies.get(
+ WorkerChoiceStrategies.ROUND_ROBIN
+ ).isDynamicPool
+ ).toBe(false)
+ expect(
+ workerChoiceStrategyContext.workerChoiceStrategies.get(
+ WorkerChoiceStrategies.ROUND_ROBIN
+ )
+ ).toBeInstanceOf(RoundRobinWorkerChoiceStrategy)
+ expect(workerChoiceStrategyContext.workerChoiceStrategyType).toBe(
+ WorkerChoiceStrategies.ROUND_ROBIN
+ )
workerChoiceStrategyContext.setWorkerChoiceStrategy(
WorkerChoiceStrategies.ROUND_ROBIN
)
- expect(workerChoiceStrategyContext.workerChoiceStrategy).toBeInstanceOf(
- RoundRobinWorkerChoiceStrategy
+ expect(
+ workerChoiceStrategyContext.workerChoiceStrategies.get(
+ WorkerChoiceStrategies.ROUND_ROBIN
+ )
+ ).toBeInstanceOf(RoundRobinWorkerChoiceStrategy)
+ expect(workerChoiceStrategyContext.workerChoiceStrategyType).toBe(
+ WorkerChoiceStrategies.ROUND_ROBIN
)
})
const workerChoiceStrategyContext = new WorkerChoiceStrategyContext(
dynamicPool
)
- workerChoiceStrategyContext.setWorkerChoiceStrategy(
+ expect(
+ workerChoiceStrategyContext.workerChoiceStrategies.get(
+ WorkerChoiceStrategies.ROUND_ROBIN
+ ).isDynamicPool
+ ).toBe(true)
+ expect(
+ workerChoiceStrategyContext.workerChoiceStrategies.get(
+ WorkerChoiceStrategies.ROUND_ROBIN
+ )
+ ).toBeInstanceOf(RoundRobinWorkerChoiceStrategy)
+ expect(workerChoiceStrategyContext.workerChoiceStrategyType).toBe(
WorkerChoiceStrategies.ROUND_ROBIN
)
- expect(workerChoiceStrategyContext.workerChoiceStrategy).toBeInstanceOf(
- DynamicPoolWorkerChoiceStrategy
+ workerChoiceStrategyContext.setWorkerChoiceStrategy(
+ WorkerChoiceStrategies.ROUND_ROBIN
)
expect(
- workerChoiceStrategyContext.workerChoiceStrategy.workerChoiceStrategy
+ workerChoiceStrategyContext.workerChoiceStrategies.get(
+ WorkerChoiceStrategies.ROUND_ROBIN
+ )
).toBeInstanceOf(RoundRobinWorkerChoiceStrategy)
+ expect(workerChoiceStrategyContext.workerChoiceStrategyType).toBe(
+ WorkerChoiceStrategies.ROUND_ROBIN
+ )
})
it('Verify that setWorkerChoiceStrategy() works with LESS_USED and fixed pool', () => {
const workerChoiceStrategyContext = new WorkerChoiceStrategyContext(
fixedPool
)
+ expect(
+ workerChoiceStrategyContext.workerChoiceStrategies.get(
+ WorkerChoiceStrategies.LESS_USED
+ ).isDynamicPool
+ ).toBe(false)
workerChoiceStrategyContext.setWorkerChoiceStrategy(
WorkerChoiceStrategies.LESS_USED
)
- expect(workerChoiceStrategyContext.workerChoiceStrategy).toBeInstanceOf(
- LessUsedWorkerChoiceStrategy
+ expect(
+ workerChoiceStrategyContext.workerChoiceStrategies.get(
+ WorkerChoiceStrategies.LESS_USED
+ )
+ ).toBeInstanceOf(LessUsedWorkerChoiceStrategy)
+ expect(workerChoiceStrategyContext.workerChoiceStrategyType).toBe(
+ WorkerChoiceStrategies.LESS_USED
)
})
const workerChoiceStrategyContext = new WorkerChoiceStrategyContext(
dynamicPool
)
+ expect(
+ workerChoiceStrategyContext.workerChoiceStrategies.get(
+ WorkerChoiceStrategies.LESS_USED
+ ).isDynamicPool
+ ).toBe(true)
workerChoiceStrategyContext.setWorkerChoiceStrategy(
WorkerChoiceStrategies.LESS_USED
)
- expect(workerChoiceStrategyContext.workerChoiceStrategy).toBeInstanceOf(
- DynamicPoolWorkerChoiceStrategy
- )
expect(
- workerChoiceStrategyContext.workerChoiceStrategy.workerChoiceStrategy
+ workerChoiceStrategyContext.workerChoiceStrategies.get(
+ WorkerChoiceStrategies.LESS_USED
+ )
).toBeInstanceOf(LessUsedWorkerChoiceStrategy)
+ expect(workerChoiceStrategyContext.workerChoiceStrategyType).toBe(
+ WorkerChoiceStrategies.LESS_USED
+ )
})
it('Verify that setWorkerChoiceStrategy() works with LESS_BUSY and fixed pool', () => {
const workerChoiceStrategyContext = new WorkerChoiceStrategyContext(
fixedPool
)
+ expect(
+ workerChoiceStrategyContext.workerChoiceStrategies.get(
+ WorkerChoiceStrategies.LESS_BUSY
+ ).isDynamicPool
+ ).toBe(false)
workerChoiceStrategyContext.setWorkerChoiceStrategy(
WorkerChoiceStrategies.LESS_BUSY
)
- expect(workerChoiceStrategyContext.workerChoiceStrategy).toBeInstanceOf(
- LessBusyWorkerChoiceStrategy
+ expect(
+ workerChoiceStrategyContext.workerChoiceStrategies.get(
+ WorkerChoiceStrategies.LESS_BUSY
+ )
+ ).toBeInstanceOf(LessBusyWorkerChoiceStrategy)
+ expect(workerChoiceStrategyContext.workerChoiceStrategyType).toBe(
+ WorkerChoiceStrategies.LESS_BUSY
)
})
const workerChoiceStrategyContext = new WorkerChoiceStrategyContext(
dynamicPool
)
+ expect(
+ workerChoiceStrategyContext.workerChoiceStrategies.get(
+ WorkerChoiceStrategies.LESS_BUSY
+ ).isDynamicPool
+ ).toBe(true)
workerChoiceStrategyContext.setWorkerChoiceStrategy(
WorkerChoiceStrategies.LESS_BUSY
)
- expect(workerChoiceStrategyContext.workerChoiceStrategy).toBeInstanceOf(
- DynamicPoolWorkerChoiceStrategy
- )
expect(
- workerChoiceStrategyContext.workerChoiceStrategy.workerChoiceStrategy
+ workerChoiceStrategyContext.workerChoiceStrategies.get(
+ WorkerChoiceStrategies.LESS_BUSY
+ )
).toBeInstanceOf(LessBusyWorkerChoiceStrategy)
+ expect(workerChoiceStrategyContext.workerChoiceStrategyType).toBe(
+ WorkerChoiceStrategies.LESS_BUSY
+ )
})
it('Verify that setWorkerChoiceStrategy() works with FAIR_SHARE and fixed pool', () => {
const workerChoiceStrategyContext = new WorkerChoiceStrategyContext(
fixedPool
)
+ expect(
+ workerChoiceStrategyContext.workerChoiceStrategies.get(
+ WorkerChoiceStrategies.FAIR_SHARE
+ ).isDynamicPool
+ ).toBe(false)
workerChoiceStrategyContext.setWorkerChoiceStrategy(
WorkerChoiceStrategies.FAIR_SHARE
)
- expect(workerChoiceStrategyContext.workerChoiceStrategy).toBeInstanceOf(
- FairShareWorkerChoiceStrategy
+ expect(
+ workerChoiceStrategyContext.workerChoiceStrategies.get(
+ WorkerChoiceStrategies.FAIR_SHARE
+ )
+ ).toBeInstanceOf(FairShareWorkerChoiceStrategy)
+ expect(workerChoiceStrategyContext.workerChoiceStrategyType).toBe(
+ WorkerChoiceStrategies.FAIR_SHARE
)
})
const workerChoiceStrategyContext = new WorkerChoiceStrategyContext(
dynamicPool
)
+ expect(
+ workerChoiceStrategyContext.workerChoiceStrategies.get(
+ WorkerChoiceStrategies.FAIR_SHARE
+ ).isDynamicPool
+ ).toBe(true)
workerChoiceStrategyContext.setWorkerChoiceStrategy(
WorkerChoiceStrategies.FAIR_SHARE
)
- expect(workerChoiceStrategyContext.workerChoiceStrategy).toBeInstanceOf(
- DynamicPoolWorkerChoiceStrategy
- )
expect(
- workerChoiceStrategyContext.workerChoiceStrategy.workerChoiceStrategy
+ workerChoiceStrategyContext.workerChoiceStrategies.get(
+ WorkerChoiceStrategies.FAIR_SHARE
+ )
).toBeInstanceOf(FairShareWorkerChoiceStrategy)
+ expect(workerChoiceStrategyContext.workerChoiceStrategyType).toBe(
+ WorkerChoiceStrategies.FAIR_SHARE
+ )
})
it('Verify that setWorkerChoiceStrategy() works with WEIGHTED_ROUND_ROBIN and fixed pool', () => {
const workerChoiceStrategyContext = new WorkerChoiceStrategyContext(
fixedPool
)
+ expect(
+ workerChoiceStrategyContext.workerChoiceStrategies.get(
+ WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN
+ ).isDynamicPool
+ ).toBe(false)
workerChoiceStrategyContext.setWorkerChoiceStrategy(
WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN
)
- expect(workerChoiceStrategyContext.workerChoiceStrategy).toBeInstanceOf(
- WeightedRoundRobinWorkerChoiceStrategy
+ expect(
+ workerChoiceStrategyContext.workerChoiceStrategies.get(
+ WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN
+ )
+ ).toBeInstanceOf(WeightedRoundRobinWorkerChoiceStrategy)
+ expect(workerChoiceStrategyContext.workerChoiceStrategyType).toBe(
+ WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN
)
})
const workerChoiceStrategyContext = new WorkerChoiceStrategyContext(
dynamicPool
)
+ expect(
+ workerChoiceStrategyContext.workerChoiceStrategies.get(
+ WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN
+ ).isDynamicPool
+ ).toBe(true)
workerChoiceStrategyContext.setWorkerChoiceStrategy(
WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN
)
- expect(workerChoiceStrategyContext.workerChoiceStrategy).toBeInstanceOf(
- DynamicPoolWorkerChoiceStrategy
- )
expect(
- workerChoiceStrategyContext.workerChoiceStrategy.workerChoiceStrategy
+ workerChoiceStrategyContext.workerChoiceStrategies.get(
+ WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN
+ )
).toBeInstanceOf(WeightedRoundRobinWorkerChoiceStrategy)
+ expect(workerChoiceStrategyContext.workerChoiceStrategyType).toBe(
+ WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN
+ )
})
})