The library uses JUnit4 . JUnit5 is stable. Is it worth migrating? I can do it. It's interesting for me.

It can be something like that:

• update maven-surfire-plugin (if necessary)
• update junit version
• run old tests with vintage junit runner
• refactor old tests step by step

Junit migration documentation

Progress:

• [chore: migration tests in credentials module from JUnit4 to JUnit5 (#756) #761]
• [Migration tests in appengine module from JUnit4 to JUnit5 (#756) #760]
• [chore: migrate tests in oauth2_http module from JUnit4 to JUnit5 - first iteration (#756) #762 ]
• [chore: migrate tests in oauth2_http module from JUnit4 to JUnit5 - second iteration (#756) #763]
• [chore: migrate tests in oauth2_http module from JUnit4 to JUnit5 - third iteration (#756) #764]
• [chore: migrate tests in oauth2_http module from JUnit4 to JUnit5 - fourth iteration (#756) #766]
• [chore: migrate tests in oauth2_http module from JUnit4 to JUnit5 - fifth iteration (#756) #767]
• [chore: migrate tests in oauth2_http module from JUnit4 to JUnit5 - sixth iteration (#756) #769]
• UPDATE(10/21/2021 by @chanseokoh): [build: fix integration test #775]

Kind regards