[antoncohen]

You can use BrowserStack (https://www.browserstack.com/) or Sauce Labs (https://saucelabs.com/) to test with Safari.

BrowserStack supports Safari 10 now (https://www.browserstack.com/list-of-browsers-and-platforms?...), Sauce Labs only lists up to Safari 9 currently (https://saucelabs.com/platforms#macos).