| # Module junit-jupiter-migrationsupport | |
| This module provides support for JUnit 4 rules within JUnit Jupiter. | |
| Currently, this support is limited to subclasses of the ```org.junit.rules.Verifier``` | |
| and ```org.junit.rules.ExternalResource``` rules of JUnit 4, respectively. | |
| Please note that a general support for arbitrary ```org.junit.rules.TestRule``` | |
| implementations is not possible within the JUnit Jupiter extension model. | |
| The main purpose of this module is to facilitate the migration of large | |
| JUnit 4 codebases containing such JUnit 4 rules by minimizing the effort | |
| needed to run such legacy tests under JUnit 5. | |
| By using one of the two provided class-level extensions on a test class | |
| such rules in legacy code bases can be left unchanged | |
| including the JUnit 4 rule import statements. | |
| However, if you intend to develop a *new* extension for | |
| JUnit 5 please use the new extension model of JUnit Jupiter instead | |
| of the rule-based model of JUnit 4. | |