Building on my last few changes to use UserIdentityLookup and
TitleParser, plus the recent addition of UserNameUtils to the
DummyServicesTrait, its now fairly simple to make this a unit
test and retrieve services from DummyServicesTrait instead of
MediaWikiServices.
Add a 'hookContainer' option to
DummyServicesTrait::getDummyUserNameUtils(), because
subclasses of TypeDefTestCase don't have a helper method
createHookContainer() (normally this is provided by
MediaWikiTestCaseTrait). Instead, create a manual mock
HookContainer, like we did previously at NamespaceDefTest.
Also add more options to DummyServicesTrait to allow
callers to provide service instances, needed to avoid
creating two MediaWikiTitleCodec objects and to use
a hook container in NamespaceInfo.
This also required replacing uses of createNoOpMock()
in DummyServicesTrait, because that is also not available
in UserDefTest (its another feature of MediaWikiTestCaseTrait).
It may be worth exploring splitting MediaWikiTestCaseTrait into
the parts that are specific to MediaWiki (like HookContainer
or the Message system) and parts that are useful generally
(like createNoOpMock).
Change-Id: I25b8f0256d222d994173eee66f379fb5422994b5