Selenium Core FAQ - Selenium - Confluence

The quick answer is that because of cross-site scripting security built into JavaScript engines in all browsers, you can't edit the content of a web page from another domain. The foreign page will probably load correctly and be visible in the test runner window, but Selenium won't be able to query or edit its contents. In other words, you can't run selenium on "foo.com" and run a test that edits

[ohsuga]

Seleniumで基本認証で保護されたURLを検証するには、http://user:pass@example.com/ 形式でURLを記載する。IEで実行する場合はレジストリに値を追加して保護機能を（一時的に）無効にした上でテストケースを実行する。

[Yamashiro0217]

seleniumでbasic認証