Prior to this commit, the default CacheAwareContextLoaderDelegate could
be configured by extending AbstractTestContextBootstrapper and
overriding getCacheAwareContextLoaderDelegate(); however, this required
that the user configure the custom TestContextBootstrapper via
@BootstrapWith.
This commit introduces a new
"spring.test.context.default.CacheAwareContextLoaderDelegate" property
that can be configured via a JVM system property or via the
SpringProperties mechanism. BootstrapUtils uses this new property to
load the default CacheAwareContextLoaderDelegate. If the property is
not defined, BootstrapUtils will fall back to creating a
DefaultCacheAwareContextLoaderDelegate as it did previously.
This allows third parties to configure the default
CacheAwareContextLoaderDelegate transparently for the user -- for
example, to intercept context loading in order to load the context in a
different manner -- for example, to make use of ahead of time (AOT)
techniques for implementing a different type of ApplicationContext at
build time.
Closes gh-27540
63fac1b7c8