* On *nix systems, put phantomjs on PATH
* Not tested on Windows
-Firefox should work without requiring additional software to be installed.
+To run tests against Firefox, you may need to install the Marionette driver,
+depending on how new your version of Firefox is. One clue that you need to do
+this is if you see an exception like:
-The test case will instantiate a Selenium driver set by the
+ selenium.common.exceptions.WebDriverException: Message: The browser
+ appears to have exited before we could connect. If you specified
+ a log_file in the FirefoxBinary constructor, check it for details.
+
+See https://developer.mozilla.org/en-US/docs/Mozilla/QA/Marionette/WebDriver
+for installation instructions. Ensure that the Marionette executable (renamed
+as wires on Linux or wires.exe on Windows) is on your PATH; and use "marionette"
+as the browser string passed via TOASTER_TESTS_BROWSER (see below).
+
+(Note: The Toaster tests have been checked against Firefox 47 with the
+Marionette driver.)
+
+The test cases will instantiate a Selenium driver set by the
TOASTER_TESTS_BROWSER environment variable, or Chrome if this is not specified.
Available drivers:
* chrome (default)
* firefox
+* marionette (for newer Firefoxes)
* ie
* phantomjs