oa-jira/tests/unit/cache/classes/resource.cache.class.spec.js

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const ResourceCache = require('../../../../src/cache/classes/resource.cache.class');

class Value {
  #id;
  constructor(id) {
    this.#id = id;
  }
  getId = () => this.#id;
}

describe('Check [Resource Cache] class', () => {
  it('should store in cache when nominal.', async () => {
    const cache = new ResourceCache('r', Value, 1);
    await cache.set(3, new Value(3));
    expect(cache.getSize()).toEqual(1);
    expect(cache.has(3)).toBeTruthy();
    const stored = await cache.get(3);
    expect(stored.getId()).toEqual(3);
    cache.reset();
    expect(cache.getSize()).toEqual(0);
  });

  it('should reject when cache is full.', async () => {
    const cache = new ResourceCache('r', Value, 1);
    await cache.set(3, new Value(3));
    expect(cache.getSize()).toEqual(1);
    expect(cache.set(4, new Value(4))).rejects.toThrow('The [r cache] CANNOT be greater than 1.');
  });
});