Incompatibility with Jackson 3/ Spring Boot 4

[Christian-Hovelmeyer]

I'm trying to upgrade to Spring Boot 4 which ships with Jackson 3, but this snapshot-testing framework is written and complied against Jackson 2.

There are breaking changes in Jackson 3 as it is a major version update. Most importantly, namespaces changed from 'com.fasterxml' to 'tools'. Class ObjectMapper now resides in tools.jackson.databind. So most classes using Jackson 2 API (except for those using jackson-annotations only) shouldn't compile any longer.

There is a way to use snapshot-testing with SB4/J3 by using a compatibility-dependency as described in https://github.com/spring-projects/spring-boot/wiki/Spring-Boot-4.0-Migration-Guide#jackson-2-compatibility.
BUT as it reads there: "This module ships in a deprecated form and will be removed in a future release. It’s intended as a stop-gap for users that need more time to migrate to Jackson 3."

Without a version that is compatible with Spring Boot 4/ Jackson 3, this framework will not usable in the not so far future.

[NicklasWallgren]

I've started adding support for jackson3, if anyone wants to pick it up;
e46653b

Spring boot 4 comes with JUnit 6, so we should probably include a module for that as well.

[NicklasWallgren]

I created a fork with support for spring boot 4, and jackson 3.
https://github.com/finoid/java-snapshot-testing