More tests.

1. direct url tab should close automatically or do nothing
2. direct url popup should close automatically
3. about:blank should close automatically
4. data:uri refresh should close automatically
5. data:uri multi refresh should close automatically
6. data:uri iframe should see an empty window (iframe blocked)
7. about:blank append iframe should see an empty window (iframe blocked)
8. data:uri link redirect should or should not close when clicking?
9. simple redirect url popup should close automatically
10. multi redirect url popup should close automatically
11. data:uri xhr load should see "ok"
12. data:uri iframe when opened, should not make any HTTP requests (iframe blocked)
13. You need to add ||example.com/AdHandler.aspx?$popunder as custom filter for the following tests:
    • popunder: direct url tab should close current tab and leave new tab opened
    • popunder: simple redirect url should close current tab and leave new tab opened
14. Popup filter-matching link: when clicked, should not be filtered as a popup

Originally from Github issue #510

More tests from elsewhere:

1. Adblock Plus Pop-up Addon test page: requires the following custom filter ||google.*^$popup for testing purpose (uBlock passes all the tests).
2. Advanced Pop-Up Test