This change introduces a new function to execute Javascript directly on
a node.
This should not, ordinarily, be used directly by steps, but may be
required in other parts of the Behat interaction.
This commit updates core Behat features to make use of the
php-webdriver/webdriver library instead of the legacy Instaclick
library.
Most of these changes relate to use of features of WebDriver which we
are required to use directly rather than through the Mink Driver.
Behat form fields are implemented in a way completely isolated from the
rest of the Behat Context system. Whereas regular step definitions have
access to execute steps, to call `find`, check for JS running, and other
related functionality, the Moodle implementation of a field type does
not have any access to this.
By moving the core functionality of behat_base to a new trait, and the
constants to a new interface, the functionality can also be used in
behat form fields in the same way as elsewhere.
Andrew Nicols