Prior to this commit, dependency injection of all arguments in a test
class constructor invoked by JUnit Jupiter was only possible if the
constructor was explicitly annotated with @Autowired.
This commit introduces support for a configurable "test constructor
autowire" mode which defaults to false in order to remain backwards
compatible.
Specifically, this mode can be configured globally for an entire test
suite via a new "spring.test.constructor.autowire" JVM system property
that can alternatively be configured via the SpringProperties
mechanism. In addition, the global "test constructor autowire" mode can
be overridden locally on a per-class basis via the new @TestConstructor
annotation.
Closes gh-22286
77eef47483