[javascript] Adding SELENIUM_MANAGER_BASE_PATH env var to use Selenium Manager for tests

Author: diemol

.bazelrc

@@ -54,6 +54,7 @@ build --test_env=LOCALAPPDATA
 build --test_env=MOZ_HEADLESS
 build --test_env=PATH  # Remove once browser pinning works
 build --test_env=SELENIUM_BROWSER
+build --test_env=SELENIUM_MANAGER_BASE_PATH
 build --test_env=TRAVIS
 build --test_env=PYTHON_VERSION
 

javascript/node/selenium-webdriver/common/seleniumManager.js

@@ -47,7 +47,15 @@ function getBinary() {
   const file =
     directory === 'windows' ? 'selenium-manager.exe' : 'selenium-manager'
 
-  const filePath = path.join(__dirname, '..', '/bin', directory, file)
+  let seleniumManagerBasePath
+  if (process.env.SELENIUM_MANAGER_BASE_PATH) {
+    seleniumManagerBasePath = process.env.SELENIUM_MANAGER_BASE_PATH
+  } else {
+    seleniumManagerBasePath = path.join(__dirname, '..', '/bin')
+  }
+  console.log(seleniumManagerBasePath)
+
+  const filePath = path.join(seleniumManagerBasePath, directory, file)
 
   if (!fs.existsSync(filePath)) {
     throw new Error(`Unable to obtain Selenium Manager`)