test: fix tests to not use chromedriver npm wrapper

test/README.md

@@ -4,7 +4,9 @@
   * See this directory's package.json
 * TAP
   * In the scratch-www repo's package.json
+* A Chrome-compatible browser (Chrome, Chromium, etc.)
 * [Chromedriver](https://sites.google.com/a/chromium.org/chromedriver/)
+  * Note: Chromedriver may come bundled with your browser, so you may not need to install it separately
 
 # Running the tests
 

test/integration-legacy/selenium-helpers.js

@@ -1,6 +1,5 @@
 const webdriver = require('selenium-webdriver');
 const bindAll = require('lodash.bindall');
-require('chromedriver');
 
 const headless = process.env.SMOKE_HEADLESS || false;
 const remote = process.env.SMOKE_REMOTE || false;

test/integration-legacy/teacher-registration/test_teacher_registration_address_step.js

@@ -3,7 +3,6 @@
  *
  * Test cases: https://github.com/LLK/scratch-www/wiki/Testing-Scratch-www#All_Test_Cases_Teacher_Join_Flow
  */
-require('chromedriver');
 const seleniumWebdriver = require('selenium-webdriver');
 const tap = require('tap');
 

test/integration-legacy/teacher-registration/test_teacher_registration_demographics_step.js

@@ -3,7 +3,6 @@
  *
  * Test cases: https://github.com/LLK/scratch-www/wiki/Testing-Scratch-www#All_Test_Cases_Teacher_Join_Flow
  */
-require('chromedriver');
 const seleniumWebdriver = require('selenium-webdriver');
 const tap = require('tap');
 

test/integration-legacy/teacher-registration/test_teacher_registration_name_step.js

@@ -3,7 +3,6 @@
  *
  * Test cases: https://github.com/LLK/scratch-www/wiki/Testing-Scratch-www#All_Test_Cases_Teacher_Join_Flow
  */
-require('chromedriver');
 const seleniumWebdriver = require('selenium-webdriver');
 const tap = require('tap');
 

test/integration-legacy/teacher-registration/test_teacher_registration_organization_step.js

@@ -3,7 +3,6 @@
  *
  * Test cases: https://github.com/LLK/scratch-www/wiki/Testing-Scratch-www#All_Test_Cases_Teacher_Join_Flow
  */
-require('chromedriver');
 const seleniumWebdriver = require('selenium-webdriver');
 const tap = require('tap');
 

test/integration-legacy/teacher-registration/test_teacher_registration_phone_step.js

@@ -3,7 +3,6 @@
  *
  * Test cases: https://github.com/LLK/scratch-www/wiki/Testing-Scratch-www#All_Test_Cases_Teacher_Join_Flow
  */
-require('chromedriver');
 const seleniumWebdriver = require('selenium-webdriver');
 const tap = require('tap');
 

test/integration-legacy/teacher-registration/test_teacher_registration_username_step.js

@@ -4,7 +4,6 @@
 * Test cases: https://github.com/LLK/scratch-www/wiki/Testing-Scratch-www#All_Test_Cases_Teacher_Join_Flow
 */
 
-require('chromedriver');
 const seleniumWebdriver = require('selenium-webdriver');
 const tap = require('tap');
 

test/integration-legacy/teacher-registration/test_teacher_registration_usescratch_step.js

@@ -3,7 +3,6 @@
  *
  * Test cases: https://github.com/LLK/scratch-www/wiki/Testing-Scratch-www#All_Test_Cases_Teacher_Join_Flow
  */
-require('chromedriver');
 const seleniumWebdriver = require('selenium-webdriver');
 const tap = require('tap');
 

test/integration/selenium-helpers.js

@@ -3,8 +3,6 @@ jest.setTimeout(30000); // eslint-disable-line no-undef
 const webdriver = require('selenium-webdriver');
 const {PageLoadStrategy} = require('selenium-webdriver/lib/capabilities');
 const bindAll = require('lodash.bindall');
-require('chromedriver');
-const chromedriverVersion = require('chromedriver').version;
 
 const headless = process.env.SMOKE_HEADLESS || false;
 const remote = process.env.SMOKE_REMOTE || false;
@@ -194,18 +192,6 @@ class SeleniumHelper {
         return driver;
     }
 
-    /**
-     * @returns {string} The version of chromedriver being used.
-     */
-    getChromeVersionNumber () {
-        const versionFinder = /\d+\.\d+/;
-        const versionArray = versionFinder.exec(chromedriverVersion);
-        if (versionArray === null) {
-            throw new Error('couldn\'t find version of chromedriver');
-        }
-        return versionArray[0];
-    }
-
     /**
      * Build a new webdriver instance using Sauce Labs.
      * You should probably use `buildDriver` instead.
@@ -215,13 +201,11 @@ class SeleniumHelper {
      * @returns {webdriver.ThenableWebDriver} The new webdriver instance.
      */
     getSauceDriver (username, accessKey, name) {
-        const chromeVersion = this.getChromeVersionNumber();
         // Driver configs can be generated with the Sauce Platform Configurator
         // https://wiki.saucelabs.com/display/DOCS/Platform+Configurator
         const driverConfig = {
             browserName: 'chrome',
-            platform: 'macOS 10.15',
-            version: chromeVersion
+            platform: 'macOS 10.15'
         };
         const driver = new webdriver.Builder()
             .withCapabilities({