SPR-12031 Support @ContextConfiguration at method level

[fdesu]

Prior Spring TestContext Framework had not supported
@ContextConfiguration annotation on the method-level.

This commit enables @ContextConfiguration and
@ContextHierarchy to be the method-level annotations.
Now TCF will emit fully configured throw-away
TestContext for the particular test method.

Issue: SPR-12031

[sbrannen]

Please apply the requested changes in order to reduce the amount of noise in this commit.

Thanks!

[sbrannen]

In general, contributors are required to adhere to the Spring Framework Code Style. So please familiarize yourself with that and rework your PR.

For example, you need to undo all changes to import ordering and static imports throughout all changed classes.

[sbrannen]

It appears that you formatted code that you have not authored or modified, which is not permissible according to Spring's coding guidelines.

Also, it appears you may be using the wrong indentation settings.

[sbrannen]

Production code is not allowed to use static imports.

[fdesu]

@sbrannen
Thank you for your remarks, will fix them asap!
Can you please advice if such declarations permitted. Or should I pull this classes in the different files/into some class as inner classes.
Asking because it is forbidden by the Code Style.

[sbrannen]

Can you please advice if such declarations permitted. Or should I pull this classes in the different files/into some class as inner classes.
Asking because it is forbidden by the Code Style.

It's definitely forbidden in production code. In test code, I think there are few places where that style is used. But I don't want that in the spring-test module. So please convert them to static nested classes within the test class.

Thanks

[fdesu]

@sbrannen
I amended previous commit and hope that current one is easier to review