fetch-mock/test/client.js

Mock http requests made using fetch (or isomorphic-fetch)

'use strict';

require('whatwg-fetch');

const fetchMock = require('../src/client.js');
const expect = require('chai').expect;

describe('native fetch behaviour', function () {

	it('should not throw when passing unmatched calls through to native fetch', function () {
		fetchMock.mock(/a/, 200);
		expect(function () {
			fetch('http://www.example.com');
		}).not.to.throw();
		fetchMock.restore();
	});
});

describe('request types that only work in the browser', function () {

	it('respond with blob', function (done) {
		const blob = new Blob();
		fetchMock.mock({
			routes: {
				name: 'route',
				matcher: 'http://it.at.there/',
				response: {body: blob, sendAsJson: false}
			}
		});
		fetch('http://it.at.there/')
			.then(function (res) {
				expect(res.status).to.equal(200);
				res.blob().then(function (blobData) {
					expect(blobData).to.eql(blob);
					done();
				});
			});
	});
});

require('./spec')(fetchMock, window, window.Request);

describe('no real fetch', function () {
	it('should cope when there is no global fetch defined', function () {
		const fetchCache = window.fetch;
		delete window.fetch;
		const realFetchCache = fetchMock.realFetch;
		delete fetchMock.realFetch;
		fetchMock.mock(/a/, 200);
		expect(function () {
			fetch('http://www.example.com');
		}).not.to.throw();

		expect(function () {
			fetchMock.calls();
		}).not.to.throw();
		fetchMock.restore();
		fetchMock.realFetch = realFetchCache;
		window.fetch = fetchCache;
	});
});