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JUnit 3 test can be JUnit 4

Reports JUnit 3 test classes that can be converted to JUnit 4 test classes.


public class MainTestCase extends junit.framework.TestCase { public void test() { Assert.assertTrue(true); } }

After the quick-fix is applied:

public class MainTestCase { @org.junit.Test public void test() { Assert.assertTrue(true); } }

Locating this inspection


Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.

Via Settings dialog

Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.

Settings or Preferences | Editor | Inspections | JUnit

This inspection only reports if the language level of the project or module is 5 or higher, and JUnit 4 is available on the classpath.


By default bundled with

IntelliJ IDEA 2024.1, Qodana for JVM 2024.1,

Can be installed with plugin

JUnit, 241.18072

Last modified: 18 June 2024