/*
 * Copyright 2022 Andrew Aylett
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import { describe, it } from '@jest/globals';
import { Response } from 'node-fetch';
import { extractCacheRules } from './cacheRules';
import { expect } from './test/expect';
import { Duration, Now } from './temporal';

describe('Validity', () => {
    it('No headers is immediately valid', () => {
        const res = new Response();

        const cacheRules = extractCacheRules(res, Now.instant);

        expect(cacheRules).validAt(cacheRules.params.ageBase);
    });

    it('No headers will be invalid 1ms later', () => {
        const res = new Response();

        const cacheRules = extractCacheRules(res, Now.instant);

        expect(cacheRules).not.validAt(
            cacheRules.params.ageBase.add(Duration.from({ milliseconds: 1 })),
        );
    });

    it('No headers will be valid 1ms earlier', () => {
        const res = new Response();

        const cacheRules = extractCacheRules(res, Now.instant);

        expect(cacheRules).validAt(
            cacheRules.params.ageBase.subtract(
                Duration.from({ milliseconds: 1 }),
            ),
        );
    });
});