mirror of
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69 lines
2.1 KiB
TypeScript
69 lines
2.1 KiB
TypeScript
import { expect } from 'chai'
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import { LRU } from '../../../src/cache/lru'
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describe('LRU', () => {
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it('should perform read()/write()', () => {
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const lru = new LRU(2)
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expect(lru.limit).to.equal(2)
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lru.write('foo', 'FOO')
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lru.write('bar', 'BAR')
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expect(lru.read('foo')).to.equal('FOO')
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expect(lru.read('bar')).to.equal('BAR')
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})
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it('should perform clear()', () => {
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const lru = new LRU(2)
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lru.write('foo', 'FOO')
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lru.write('bar', 'BAR')
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expect(lru.size).to.equal(2)
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lru.clear()
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expect(lru.size).to.equal(0)
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expect(lru.read('foo')).to.be.undefined
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})
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it('should remove lrc item when full(limit=-1)', () => {
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const lru = new LRU(-1)
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lru.write('foo', 'FOO')
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lru.write('bar', 'BAR')
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expect(lru.size).to.equal(0)
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expect(lru.read('foo')).to.be.undefined
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expect(lru.read('bar')).to.be.undefined
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})
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it('should remove lrc item when full(limit=0)', () => {
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const lru = new LRU(0)
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lru.write('foo', 'FOO')
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lru.write('bar', 'BAR')
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expect(lru.size).to.equal(0)
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expect(lru.read('foo')).to.be.undefined
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expect(lru.read('bar')).to.be.undefined
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})
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it('should remove lrc item when full(limit=1)', () => {
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const lru = new LRU(1)
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lru.write('foo', 'FOO')
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lru.write('bar', 'BAR')
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expect(lru.size).to.equal(1)
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expect(lru.read('foo')).to.be.undefined
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expect(lru.read('bar')).to.equal('BAR')
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})
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it('should remove lrc item when full(limit=2)', () => {
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const lru = new LRU(2)
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expect(lru.size).to.equal(0)
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lru.write('foo', 'FOO')
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expect(lru.size).to.equal(1)
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lru.write('bar', 'BAR')
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expect(lru.size).to.equal(2)
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lru.write('coo', 'COO')
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expect(lru.size).to.equal(2)
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expect(lru.read('foo')).to.be.undefined
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expect(lru.read('bar')).to.equal('BAR')
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expect(lru.read('coo')).to.equal('COO')
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})
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it('should overwrite item the with same key', () => {
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const lru = new LRU(2)
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lru.write('foo', 'FOO')
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expect(lru.size).to.equal(1)
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lru.write('foo', 'BAR')
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expect(lru.size).to.equal(1)
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expect(lru.read('foo')).to.equal('BAR')
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})
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})
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