Several tests called AssertJ's assertThat without chaining an assertion,
or chained withFailMessage after the assertion had already run, so they
verified nothing. Found with OpenRewrite's FindIgnoredCheckReturnValue.
See gh-52045
Signed-off-by: Tim te Beek <tim@moderne.io>
This commit modularizes spring-boot-test-autoconfigure. It now
contains only the code that's central to test auto-configuration.
Feature-specific functionality has moved out into -test modules,
some existing and some newly created. For example, `@DataJpaTest` can
now be found in spring-boot-data-jpa-test.
Closes gh-47322