mirror of
https://github.com/kremalicious/metamask-extension.git
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76a2a9bb8b
* @metamask/eslint-config@5.0.0 * Update eslintrc and prettierrc * yarn lint:fix
174 lines
4.6 KiB
JavaScript
174 lines
4.6 KiB
JavaScript
import assert from 'assert';
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import nock from 'nock';
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import sinon from 'sinon';
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import proxyquire from 'proxyquire';
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const fakeStorage = {};
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const fetchWithCache = proxyquire('./fetch-with-cache', {
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'../../../lib/storage-helpers': fakeStorage,
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}).default;
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describe('Fetch with cache', function () {
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beforeEach(function () {
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fakeStorage.getStorageItem = sinon.stub();
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fakeStorage.setStorageItem = sinon.stub();
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});
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afterEach(function () {
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sinon.restore();
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nock.cleanAll();
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});
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it('fetches a url', async function () {
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nock('https://fetchwithcache.metamask.io')
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.get('/price')
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.reply(200, '{"average": 1}');
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const response = await fetchWithCache(
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'https://fetchwithcache.metamask.io/price',
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);
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assert.deepStrictEqual(response, {
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average: 1,
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});
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});
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it('returns cached response', async function () {
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nock('https://fetchwithcache.metamask.io')
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.get('/price')
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.reply(200, '{"average": 2}');
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fakeStorage.getStorageItem.returns({
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cachedResponse: { average: 1 },
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cachedTime: Date.now(),
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});
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const response = await fetchWithCache(
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'https://fetchwithcache.metamask.io/price',
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);
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assert.deepStrictEqual(response, {
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average: 1,
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});
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});
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it('fetches URL again after cache refresh time has passed', async function () {
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nock('https://fetchwithcache.metamask.io')
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.get('/price')
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.reply(200, '{"average": 3}');
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fakeStorage.getStorageItem.returns({
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cachedResponse: { average: 1 },
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cachedTime: Date.now() - 1000,
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});
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const response = await fetchWithCache(
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'https://fetchwithcache.metamask.io/price',
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{},
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{ cacheRefreshTime: 123 },
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);
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assert.deepStrictEqual(response, {
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average: 3,
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});
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});
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it('should abort the request when the custom timeout is hit', async function () {
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nock('https://fetchwithcache.metamask.io')
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.get('/price')
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.delay(100)
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.reply(200, '{"average": 4}');
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await assert.rejects(
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() =>
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fetchWithCache(
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'https://fetchwithcache.metamask.io/price',
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{},
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{ timeout: 20 },
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),
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{ name: 'AbortError', message: 'Aborted' },
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);
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});
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it('throws when the response is unsuccessful', async function () {
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nock('https://fetchwithcache.metamask.io')
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.get('/price')
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.reply(500, '{"average": 6}');
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await assert.rejects(() =>
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fetchWithCache('https://fetchwithcache.metamask.io/price'),
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);
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});
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it('throws when a POST request is attempted', async function () {
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nock('https://fetchwithcache.metamask.io')
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.post('/price')
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.reply(200, '{"average": 7}');
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await assert.rejects(() =>
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fetchWithCache('https://fetchwithcache.metamask.io/price', {
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method: 'POST',
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}),
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);
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});
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it('throws when the request has a truthy body', async function () {
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nock('https://fetchwithcache.metamask.io')
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.get('/price')
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.reply(200, '{"average": 8}');
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await assert.rejects(() =>
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fetchWithCache('https://fetchwithcache.metamask.io/price', { body: 1 }),
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);
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});
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it('throws when the request has an invalid Content-Type header', async function () {
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nock('https://fetchwithcache.metamask.io')
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.get('/price')
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.reply(200, '{"average": 9}');
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await assert.rejects(
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() =>
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fetchWithCache('https://fetchwithcache.metamask.io/price', {
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headers: { 'Content-Type': 'text/plain' },
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}),
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{ message: 'fetchWithCache only supports JSON responses' },
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);
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});
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it('should correctly cache responses from interwoven requests', async function () {
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nock('https://fetchwithcache.metamask.io')
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.get('/foo')
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.reply(200, '{"average": 9}');
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nock('https://fetchwithcache.metamask.io')
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.get('/bar')
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.reply(200, '{"average": 9}');
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const testCache = {};
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fakeStorage.getStorageItem.callsFake((key) => testCache[key]);
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fakeStorage.setStorageItem.callsFake((key, value) => {
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testCache[key] = value;
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});
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await Promise.all([
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fetchWithCache(
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'https://fetchwithcache.metamask.io/foo',
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{},
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{ cacheRefreshTime: 123 },
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),
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fetchWithCache(
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'https://fetchwithcache.metamask.io/bar',
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{},
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{ cacheRefreshTime: 123 },
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),
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]);
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assert.deepStrictEqual(
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testCache['cachedFetch:https://fetchwithcache.metamask.io/foo']
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.cachedResponse,
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{ average: 9 },
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);
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assert.deepStrictEqual(
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testCache['cachedFetch:https://fetchwithcache.metamask.io/bar']
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.cachedResponse,
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{ average: 9 },
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);
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});
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});
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