Added support for Webdriver Standalone (#139)

* Added support for Webdriver Standalone

The before function is currently already being called with the arguments of config, capabilities, browser.
Since the browser object will be the same, this change allows the service to be compatible with the CLI Testrunner
and WebDriver standalone. Documentation in the README and a new test has been added also.

* Cleaning up code as per PR feedback

* Updating chromedriver to fix failing build

Co-authored-by: Jeffrey Quach <jquach@atlassian.com>

README.md

@@ -25,6 +25,8 @@ npm install wdio-intercept-service -D
 
 ## Usage
 
+### Usage with WebDriver CLI
+
 It should be as easy as adding wdio-intercept-service to your `wdio.conf.js`:
 
 ```javascript
@@ -37,6 +39,43 @@ exports.config = {
 
 and you're all set.
 
+### Usage with WebDriver Standalone
+
+When using WebdriverIO Standalone, the `before` and `beforeTest` / `beforeScenario` functions need to be called manually.
+
+```javascript
+import { remote } from 'webdriverio';
+import WebdriverAjax from 'wdio-intercept-service'
+
+const WDIO_OPTIONS = {
+  port: 9515,
+  path: '/',
+  capabilities: {
+    browserName: 'chrome'
+  },
+}
+
+let browser;
+const interceptServiceLauncher = WebdriverAjax();
+
+beforeAll(async () => {
+  browser = await remote(WDIO_OPTIONS)
+  interceptServiceLauncher.before(null, null, browser)
+})
+
+beforeEach(async () => {
+  interceptServiceLauncher.beforeTest()
+})
+
+afterAll(async () => {
+  await client.deleteSession()
+});
+
+describe('', async () => {
+  ... // See example usage
+});
+```
+
 Once initialized, some related functions are added to your browser command chain (see [API](#api)).
 
 ## Quickstart

index.js

@@ -15,7 +15,7 @@ class WebdriverAjax {
     this._wdajaxExpectations = [];
   }
 
-  before() {
+  before(_, __, browser) {
     /**
      * instance need to have addCommand method
      */

package.json

@@ -44,7 +44,7 @@
     "@wdio/spec-reporter": "^7.6.0",
     "@wdio/static-server-service": "^7.6.0",
     "@wdio/sync": "^7.6.0",
-    "chromedriver": "^90.0.0",
+    "chromedriver": "^92.0.0",
     "husky": "4.2.5",
     "prettier": "2.3.0",
     "release-it": "^14.6.2",

test/spec/plugin_test.js

@@ -1,6 +1,8 @@
 'use strict';
 
 const assert = require('assert');
+const { remote } = require('webdriverio');
+const WebdriverAjax = require('../../index').default;
 
 describe('webdriverajax', function testSuite() {
   this.timeout(process.env.CI ? 100000 : 10000);
@@ -17,6 +19,24 @@ describe('webdriverajax', function testSuite() {
     assert.deepEqual(ret, { requests: [] });
   });
 
+  it('sets up the interceptor in standalone mode', async () => {
+    const browser = await remote({
+      port: 9515,
+      path: '/',
+      capabilities: {
+        browserName: 'chrome',
+        'goog:chromeOptions': {
+          args: ['--headless'],
+        },
+      },
+    });
+
+    const webdriverAjax = new WebdriverAjax();
+    webdriverAjax.before(null, null, browser);
+
+    assert.equal(typeof browser.setupInterceptor, 'function');
+  });
+
   it('should reset expectations', () => {
     assert.equal(typeof browser.setupInterceptor, 'function');
     browser.url('/get.html');