Greetings,
I would like to start a gradual migration of calcite test codebase to [JUnit5](https://junit.org/junit5/). The plan is to do in several steps outlined below : 1. Upgrade maven wrapper to 3.6.0 (surefire plugin needs to work with JUnit5 >= 2.22.0). Maybe enforce maven 3.6.0 during builds. 2. Add new dependencies to maven pom (jupiter and vantage). 3. Migrate all basic tests to new JUnit5 API. Basic in this context means tests without [rules](https://github.com/junit-team/junit4/wiki/rules) or [runners]( https://github.com/junit-team/junit4/wiki/test-runners#runwith-annotation) just basic `@Test` / `@Before` / `@Ignore` annotations. Code where I can just apply string/replace and make it work in JUnit5. 4. Migrate remaining tests (with `@Parameterized` / `@ClassRule` etc.). For example, I will have to write custom extensions for existing elastic / mongo / cassandra / geode class rules. For developers that means you will need to have a reasonably recent IDE / Maven: 1. For IntelliJ this is >= 2016.2 2. For Eclipse this is >= Oxygen.1a (4.7.1a) 3. For Maven >= 3.6.0 (released on 2018-10-24) Questions to fellow calcitians: 1. Do you agree with JUnit5 migration ? 2. Do you agree with the plan ? 3. Should I wait for 1.20 release ? 4. Anything I missed ? Regards, Andrei.
