dla

import 'source-map-support/register'; import * as assert from 'assert'; import {Collection, index, ListableCollection, MemoryCache} from '..'; interface Item { id: string; } interface IHuman { id: string; sex: string; age: number; } interface IHumanFilter { minAge?: number; sex?: string; } function initCollection(cache) { const result = { collection: new Collection<Item>({ cache, extractId: (item) => item.id, loadFew: (ids) => { result.queryCounter++; result.objectsCounter += ids.length; return new Promise((resolve) => { setTimeout(() => { resolve( index( ids.map((id) => ({ id, })), (item) => item.id, ), ); }, 300); }); }, }), objectsCounter: 0, queryCounter: 0, }; return result; } function initListableCollection(cache) { const data = [{ id: '1', age: 28, sex: 'm', }, { id: '2', age: 25, sex: 'f', }, { id: '3', age: 16, sex: 'm', }, { id: '4', age: 52, sex: 'f', }]; const result = { collection: new ListableCollection<IHuman, IHumanFilter>({ cache, extractId: (human) => human.id, loadOne: (id) => { result.objectsCounter++; return new Promise((resolve) => { setTimeout(() => { resolve( data.find((item) => item.id === id), ); }, 300); }); }, loadList: (filter) => { result.listsCounter++; return { items: data.filter( (item) => (!('minAge' in filter) || item.age >= filter.minAge) && (!('sex' in filter) || item.sex === filter.sex), ), }; }, invalidationTags: (filter) => { const invalidators = []; if ('sex' in filter) { invalidators.push(`sex=${filter.sex}`); } return invalidators; }, }), listsCounter: 0, objectsCounter: 0, }; return result; } describe('cache', () => { it('get/set/remove', async () => { const cache = new MemoryCache(); assert(!await cache.get('a')); await cache.set('a', {a: 55}); assert.deepEqual(await cache.get('a'), {a: 55}); await cache.remove('a'); assert(!await cache.get('a')); }); it('objects cache', async () => { const cache = new MemoryCache(); const test1 = initCollection(cache); assert.deepEqual( await test1.collection.getFewAsArray(['5', '5', '6', '7']), [{id: '5'}, {id: '5'}, {id: '6'}, {id: '7'}], ); assert.equal(test1.queryCounter, 1); assert.equal(test1.objectsCounter, 3); const test2 = initCollection(cache); assert.deepEqual( await test2.collection.getFewAsArray(['4', '6', '8']), [{id: '4'}, {id: '6'}, {id: '8'}], ); assert.equal(test2.queryCounter, 1); assert.equal(test2.objectsCounter, 2); await test2.collection.clearCache('5'); await test2.collection.clearCache(['6', '8']); assert.deepEqual( await test2.collection.getFewAsArray(['4', '5', '6', '7', '8']), [{id: '4'}, {id: '5'}, {id: '6'}, {id: '7'}, {id: '8'}], ); assert.equal(test2.queryCounter, 2); assert.equal(test2.objectsCounter, 5); }); it('lists cache', async () => { const cache = new MemoryCache(); const test1 = initListableCollection(cache); assert.deepEqual( await test1.collection.getList({ minAge: 27, }), [{ id: '1', age: 28, sex: 'm', }, { id: '4', age: 52, sex: 'f', }]); assert.equal(test1.objectsCounter, 0); assert.equal(test1.listsCounter, 1); assert.deepEqual( await test1.collection.getList({ minAge: 27, }), [{ id: '1', age: 28, sex: 'm', }, { id: '4', age: 52, sex: 'f', }]); assert.equal(test1.objectsCounter, 0); assert.equal(test1.listsCounter, 1); const test2 = initListableCollection(cache); assert.deepEqual( await test2.collection.getList({ minAge: 27, }), [{ id: '1', age: 28, sex: 'm', }, { id: '4', age: 52, sex: 'f', }]); assert.equal(test2.objectsCounter, 0); assert.equal(test2.listsCounter, 0); assert.deepEqual( await test2.collection.getList({ minAge: 29, }), [{ id: '4', age: 52, sex: 'f', }]); assert.equal(test2.objectsCounter, 0); assert.equal(test2.listsCounter, 1); await test2.collection.clearCache('1'); assert.deepEqual( await test2.collection.getList({ minAge: 27, }), [{ id: '1', age: 28, sex: 'm', }, { id: '4', age: 52, sex: 'f', }]); assert.equal(test2.objectsCounter, 0); assert.equal(test2.listsCounter, 2); assert.deepEqual( await test2.collection.getList({ minAge: 29, }), [{ id: '4', age: 52, sex: 'f', }]); assert.equal(test2.objectsCounter, 0); assert.equal(test2.listsCounter, 2); }); it('invalidate list cache', async () => { const cache = new MemoryCache(); const test1 = initListableCollection(cache); assert.deepEqual( await test1.collection.getList({ sex: 'm', }), [{ id: '1', age: 28, sex: 'm', }, { id: '3', age: 16, sex: 'm', }]); assert.deepEqual( await test1.collection.getList({ sex: 'f', }), [{ id: '2', age: 25, sex: 'f', }, { id: '4', age: 52, sex: 'f', }]); assert.equal(test1.objectsCounter, 0); assert.equal(test1.listsCounter, 2); await test1.collection.invalidateCacheTag('sex=m'); assert.deepEqual( await test1.collection.getList({ sex: 'm', }), [{ id: '1', age: 28, sex: 'm', }, { id: '3', age: 16, sex: 'm', }]); assert.equal(test1.objectsCounter, 0); assert.equal(test1.listsCounter, 3); assert.deepEqual( await test1.collection.getList({ sex: 'f', }), [{ id: '2', age: 25, sex: 'f', }, { id: '4', age: 52, sex: 'f', }]); assert.equal(test1.objectsCounter, 0); assert.equal(test1.listsCounter, 3); const test2 = initListableCollection(cache); assert.deepEqual( await test2.collection.getList({ sex: 'm', }), [{ id: '1', age: 28, sex: 'm', }, { id: '3', age: 16, sex: 'm', }]); assert.equal(test2.objectsCounter, 0); assert.equal(test2.listsCounter, 0); assert.deepEqual( await test1.collection.getList({ sex: 'f', }), [{ id: '2', age: 25, sex: 'f', }, { id: '4', age: 52, sex: 'f', }]); assert.equal(test2.objectsCounter, 0); assert.equal(test2.listsCounter, 0); test2.collection.invalidateCacheTag('sex=f'); assert.deepEqual( await test2.collection.getList({ sex: 'f', }), [{ id: '2', age: 25, sex: 'f', }, { id: '4', age: 52, sex: 'f', }]); assert.equal(test2.objectsCounter, 0); assert.equal(test2.listsCounter, 1); }); });