Polish contribution to use a factory method in `AbstractJsonMarshalTester`
rather than additional constructor arguments.
Also change the `JsonContent` tests so that the `Configuration` constructor
is package private. This keeps JsonPath classes out of our public API, at
the expense of limiting custom JsonPath configurations to just our code.
See gh-16629
Update `JacksonTester` so that the JsonPath instance is explicitly configured
with both a `JacksonJsonProvider` and a `JacksonMappingProvider`.
Prior to this commit, the handling of special characters was not symmetrical
between the serialization (handled via the JacksonTester) and the parsing (handled
via JsonPath) due to the fact that JsonPath used `SimpleJson` as its parser.
See gh-16629
Until Spring Framework 5.1.15, a FactoryBean with a non-default constructor
defined via component scanning would cause an error. This behavior has changed
as of https://github.com/spring-projects/spring-framework/issues/22409.
Regardless of this change we want to ensure that we avoid triggering eager
initialisation. `SimpleFactoryBean` has been written this way so that the tests
fail if early initialization is triggered regardless of the Spring Framework version.
Fixes gh-15898
This commit updates the behavior of withBasicAuth on TestRestTemplate
by trying to use the same request factory type as the underlying restTemplate.
If creation of a new instance of the configured request factory class fails,
it falls back to the `ClientHttpRequestFactorySupplier`.
See gh-15982
Update `ApplicationContextAssert.getBean` so that multiple beans are
supported as long as one of them is primary. This aligns better with
the way that the standard `ApplicationContext.getBean` method works.
Closes gh-14874