* Separate out tests for MediaWikiGadgetsDefinitionRepo and
Hooks::onGetPreferences. Removed hack in fetchStructuredList() for
overriding page content for tests.
* Add tests for ES6 gadgets. For this, ResourceLoaderModuleTest is
converted back to an integration test.
* Removed createGadgetDefinitionPage() test helper method. Now using
MediaWikiIntegrationTestCase::editPage().
* Fixed GDNamespaceRepoTest failure when GDNamespaceRepo is the active
repo, by clearing WAN process cache.
Change-Id: I26b84576a91f6cb0ebae64c5fc1408666d767911
* Add tests for onBeforePageDisplay hook. A simple gadget repo
implementation, StaticGadgetRepo, is introduced for this.
* Add integrations tests for various gadget load conditions.
* Add test for onUserGetDefaultOptions hook.
* Add tests for GadgetDefinitionNamespaceRepo.
* Convert ResourceLoaderModuleTest to a unit test.
Change-Id: I275380c2bfcaa44770b3946a0a468eaaabef70c0
