dla/dist/tests/listable-collection.t.js

node.js data loader with caching and support of lists

"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
Object.defineProperty(exports, "__esModule", { value: true });
require("source-map-support/register");
const assert = require("assert");
const __1 = require("..");
function init() {
    const data = [{
            id: '1',
            age: 28,
        }, {
            id: '2',
            age: 25,
        }, {
            id: '3',
            age: 16,
        }, {
            id: '4',
            age: 52,
        }];
    const result = {
        collection: new __1.ListableCollection({
            extractId: (human) => human.id,
            loadOne: (id) => {
                result.objectsCounter++;
                return new Promise((resolve) => {
                    setTimeout(() => {
                        resolve(data.find((item) => item.id === id));
                    }, 300);
                });
            },
            loadList: (filter) => {
                return {
                    items: data.filter((item) => item.age >= filter.minAge),
                };
            },
        }),
        objectsCounter: 0,
    };
    return result;
}
describe('listable-collection', () => {
    it('makes single request', () => __awaiter(this, void 0, void 0, function* () {
        const test = init();
        assert.deepEqual(yield test.collection.getOne('3'), { id: '3', age: 16 });
        assert.deepEqual(test.objectsCounter, 1);
    }));
    it('makes list request', () => __awaiter(this, void 0, void 0, function* () {
        const test = init();
        assert.deepEqual(yield test.collection.getList({
            minAge: 27,
        }), [{
                id: '1',
                age: 28,
            }, {
                id: '4',
                age: 52,
            }]);
        assert.deepEqual(yield test.collection.getOne('1'), {
            id: '1',
            age: 28,
        });
        assert.deepEqual(test.objectsCounter, 0);
    }));
});
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