Update `AnnotationsPropertySource` to ensure that `null` results from
`findMergedAnnotation` are not added to the annotation list.
Prior to this commit, if `findMergedAnnotation` returned `null` then
`AnnotationsPropertySource.collectProperties` would throw an NPE.
Although `findMergedAnnotation` should never return `null`, we're
best off being defensive so that bugs such as SPR-17495 won't cause
problems.
Closes gh-15175
This commit updates all `toLowerCase()` and `toUpperCase` invocations to
use the variant that takes a `Locale` to avoid locale-specific side
effect.
Closes gh-12213
Update `@ImportAutoConfiguration` so that it is no longer annotated with
`@AutoConfigurationPackage` and as such isn't a marker for
`AutoConfigurationPackages`.
Having `@ImportAutoConfiguration` marked as an auto-configuration
package is particularly problematic in tests since it frequently breaks
context caching.
Fixes gh-9282
Previously, @AutoConfigureJsonTesters only imported
JsonTestersAutoConfiguration and relied on something else pulling in
the Jackson and GSON auto-configuration upon which it depends. This
worked with @JsonTest which imported those auto-configurations. It
did not work with @SpringBootTest which would use
@EnableAutoConfiguration and the ordering was then wrong and
JsonTestersAutoConfiguration would be processed before the Jackson
and GSON auto-configurations had a chance to create the beans that
JsonTestersAutoConfiguration needs.
This commit updates the spring.factories configuration for
JsonTestersAutoConfiguration so that it imports
JacksonAutoConfiguration and GsonAutoConfiguration.
Appropriate @AutoConfigureAfter has also been added to
JsonTestersAutoConfiguration to ensure that it is considered after
JacksonAutoConfiguration and GsonAutoConfiguration.
Lastly, ExampleJsonApplication and associated classes have been moved
into an app sub-package to prevent its component scanning from
pulling in JsonTestersAutoConfiguration as if it were user
configuration.
Closes gh-9515
