This is a test suite for the drag and drop API described in the HTML5 specification: http://dev.w3.org/html5/spec/dnd.html#dnd Tests in target-origin/ relate to a proposed spec extension and are not covered by HTML5 drafts at the time of writing. Contact Opera Sofware for details, and mention CT-1656. Tests in synthetic/ relate to incomplete parts of the HTML5 specification, which allows synthetic events to be created. For compatibility with others, the dataTransfer parameter allows null, undefined and other objects. Objects will create a synthetic dataTransfer. To provide maximum functionality, synthetic dataTransfer will have its own synthetic data store, detatched from the real data store used by real drag events (actual user interaction). For security, real dataTransfer objects will remember the real event's protection status inside synthetic events (the spec bases their protection only on the event type, and does not consider the difference between real and synthetic events). Tests in platform/plugin are based on assumed "good" behaviour, where the appropriate events are passed to the plugin. Platforms should determine if any deviations from the expected results are problematic.