Support exclude

Author: WhatAKitty

.babelrc

@@ -1,3 +1,3 @@
 {
-  "presets": [ "react" ]
+  "presets": [ "react", "env" ]
 }

package.json

@@ -35,9 +35,11 @@
     "babel-core": "^6.26.0",
     "babel-eslint": "^8.0.1",
     "babel-polyfill": "^6.26.0",
+    "babel-preset-env": "^1.6.1",
     "babel-preset-react": "^6.24.1",
     "eslint": "^4.10.0",
     "expect.js": "^0.3.1",
+    "isomorphic-fetch": "^2.2.1",
     "mocha": "^4.0.1"
   },
   "dependencies": {

src/index.js

@@ -2,12 +2,18 @@ import { parseRequest, matchUrl, isNull } from './util';
 import Response from './response';
 
 class FetchMock {
-  constructor(required) {
+  constructor(required, options = {
+    fetch: () => {},
+    exclude: [],
+  }) {
     if ('object' !== typeof required) {
       throw new Error('There is no required defined.');
     }
 
     this.urls = [];
+    this.raw = options.fetch;
+    this.exclude = options.exclude;
+
     this.loadMocks = this.loadMocks.bind(this);
     this.loadMock = this.loadMock.bind(this);
     this.matchReqUrl = this.matchReqUrl.bind(this);
@@ -62,7 +68,21 @@ class FetchMock {
     };
   }
 
+  isExclude(url) {
+    for (let i = 0; i < this.exclude.length; i++) {
+      const excludeUrl = this.exclude[i];
+      return excludeUrl === url || (excludeUrl instanceof RegExp && excludeUrl.exec(url) !== null);
+    }
+    return false;
+  }
+
   fetch(url, options) {
+    // using raw fetch while match exclude
+    if (this.isExclude(url)) {
+      // using raw fetch
+      return this.raw(url, options);
+    }
+
     const { request, mock } = this.matchReqUrl(parseRequest(url, options));
     if ('function' !== typeof mock.func) {
       throw new Error('There is no url defined in __mocks__');

test/index.test.js

@@ -2,7 +2,13 @@ import 'babel-polyfill';
 import expect from 'expect.js';
 import FetchMock, { Mock } from '../';
 
-const fetch = new FetchMock(require('../__mocks__')).fetch;
+const fetch = new FetchMock(require('../__mocks__'), {
+  fetch: require('isomorphic-fetch'),
+  exclude: [
+    'http://www.baidu.com',
+    /^foo(bar)?$/i,
+  ],
+}).fetch;
 describe('test fetch mock', () => {
   it('fetch /api/users data', async () => {
     const response = await fetch('/api/users');
@@ -99,6 +105,16 @@ describe('test fetch mock', () => {
     expect(data).to.be.property('userId', '121');
   });
 
+  it('fetch exclude path', async () => {
+    const response = await fetch('http://www.baidu.com');
+    const { status } = response;
+    expect(status).to.be.eql(200);
+    const html = await response.text();
+    expect(html).not.to.be(undefined);
+    expect(html).not.to.be.empty();
+    expect(html).to.be.an('string');
+  });
+
   it('post /api/users', async () => {
     const { status } = await fetch('/api/users', {
       method: 'POST',