Implement a custom ArgumentsProvider and reference it via @ArgumentsSource on a @ParameterizedTest.

Example

package com.logicbig.example;

import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.Arguments;
import org.junit.jupiter.params.provider.ArgumentsSource;
import org.junit.jupiter.params.provider.ArgumentsProvider;
import org.junit.jupiter.api.extension.ExtensionContext;

import java.util.stream.Stream;

import static org.junit.jupiter.api.Assertions.assertTrue;

public class ParameterizedArgumentsProviderTest {

    static class PalindromeArgumentsProvider implements ArgumentsProvider {
        @Override
        public Stream<? extends Arguments> provideArguments(ExtensionContext context) {
            return Stream.of("madam", "racecar", "level").map(Arguments::of);
        }
    }

    @ParameterizedTest(name = "#{index} custom provider arg={0}")
    @ArgumentsSource(PalindromeArgumentsProvider.class)
    void usingCustomArgumentsProvider(String input) {
        assertTrue(new StringBuilder(input).reverse().toString().equals(input));
    }
}

mvn test -Dtest=ParameterizedArgumentsProviderTest

Output

D:\example-projects\junit-5\junit-5-parameterized-tests\junit-5-parameterized-argumentsprovider>mvn test -Dtest=ParameterizedArgumentsProviderTest
[INFO] Scanning for projects...
[INFO] 
[INFO] ----< com.logicbig.example:junit-5-parameterized-argumentsprovider >----
[INFO] Building junit-5-parameterized-argumentsprovider 1.0-SNAPSHOT
[INFO]   from pom.xml
[INFO] --------------------------------[ jar ]---------------------------------
[INFO] 
[INFO] --- resources:3.3.1:resources (default-resources) @ junit-5-parameterized-argumentsprovider ---
[INFO] skip non existing resourceDirectory D:\example-projects\junit-5\junit-5-parameterized-tests\junit-5-parameterized-argumentsprovider\src\main\resources
[INFO] 
[INFO] --- compiler:3.14.1:compile (default-compile) @ junit-5-parameterized-argumentsprovider ---
[INFO] No sources to compile
[INFO] 
[INFO] --- resources:3.3.1:testResources (default-testResources) @ junit-5-parameterized-argumentsprovider ---
[INFO] skip non existing resourceDirectory D:\example-projects\junit-5\junit-5-parameterized-tests\junit-5-parameterized-argumentsprovider\src\test\resources
[INFO] 
[INFO] --- compiler:3.14.1:testCompile (default-testCompile) @ junit-5-parameterized-argumentsprovider ---
[INFO] Recompiling the module because of changed source code.
[INFO] Compiling 1 source file with javac [debug target 25] to target\test-classes
[INFO] /D:/LogicBig/example-projects/junit-5/junit-5-parameterized-tests/junit-5-parameterized-argumentsprovider/src/test/java/com/logicbig/example/ParameterizedArgumentsProviderTest.java: D:\example-projects\junit-5\junit-5-parameterized-tests\junit-5-parameterized-argumentsprovider\src\test\java\com\logicbig\example\ParameterizedArgumentsProviderTest.java uses or overrides a deprecated API.
[INFO] /D:/LogicBig/example-projects/junit-5/junit-5-parameterized-tests/junit-5-parameterized-argumentsprovider/src/test/java/com/logicbig/example/ParameterizedArgumentsProviderTest.java: Recompile with -Xlint:deprecation for details.
[INFO] 
[INFO] --- surefire:3.5.0:test (default-test) @ junit-5-parameterized-argumentsprovider ---
[INFO] Using auto detected provider org.apache.maven.surefire.junitplatform.JUnitPlatformProvider
[INFO] 
[INFO] -------------------------------------------------------
[INFO]  T E S T S
[INFO] -------------------------------------------------------
[INFO] +--com.logicbig.example.ParameterizedArgumentsProviderTest - 0.125 ss
[INFO] |  +-- [OK] usingCustomArgumentsProvider(String) #1 custom provider arg="madam" - 0.043 ss
[INFO] |  +-- [OK] usingCustomArgumentsProvider(String) #2 custom provider arg="racecar" - 0.002 ss
[INFO] |  '-- [OK] usingCustomArgumentsProvider(String) #3 custom provider arg="level" - 0.002 ss
[INFO] 
[INFO] Results:
[INFO] 
[INFO] Tests run: 3, Failures: 0, Errors: 0, Skipped: 0
[INFO] 
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  3.671 s
[INFO] Finished at: 2025-12-04T14:58:08+08:00
[INFO] ------------------------------------------------------------------------

Example Project

Dependencies and Technologies Used:

• junit-jupiter-engine 6.0.1 (Module "junit-jupiter-engine" of JUnit)
   Version Compatibility: 5.0.0 - 6.0.1Version List
  ×

  Version compatibilities of junit-jupiter-engine with this example:

  • 5.0.0
  • 5.0.1
  • 5.0.2
  • 5.0.3
  • 5.1.0
  • 5.1.1
  • 5.2.0
  • 5.3.0
  • 5.3.1
  • 5.3.2
  • 5.4.0
  • 5.4.1
  • 5.4.2
  • 5.5.0
  • 5.5.1
  • 5.5.2
  • 5.6.0
  • 5.6.1
  • 5.6.2
  • 5.6.3
  • 5.7.0
  • 5.7.1
  • 5.7.2
  • 5.8.0
  • 5.8.1
  • 5.8.2
  • 5.9.0
  • 5.9.1
  • 5.9.2
  • 5.9.3
  • 5.10.0
  • 5.10.1
  • 5.10.2
  • 5.10.3
  • 5.10.4
  • 5.10.5
  • 5.11.0
  • 5.11.1
  • 5.11.2
  • 5.11.3
  • 5.11.4
  • 5.12.0
  • 5.12.1
  • 5.12.2
  • 5.13.0
  • 5.13.1
  • 5.13.2
  • 5.13.3
  • 5.13.4
  • 5.14.0
  • 5.14.1
  • 6.0.0
  • 6.0.1

  Versions in green have been tested.

• junit-jupiter-params 6.0.1 (Module "junit-jupiter-params" of JUnit)
  
• JDK 25
• Maven 3.9.11