JUnit Jupiter includes conditional annotations that look at JVM system properties to decide whether a test should be executed. These are handy for feature flags and machine-specific behavior.

Java source and doc

Definition of EnabledIfSystemProperty

package org.junit.jupiter.api.condition;
   ........
@Target({ElementType.TYPE, ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Repeatable(EnabledIfSystemProperties.class)
@ExtendWith(EnabledIfSystemPropertyCondition.class)
@API(status = STABLE, since = "5.1")
@SuppressWarnings("exports")
public @interface EnabledIfSystemProperty {
    String named(); 1
    String matches(); 2
    @API(status = STABLE, since = "5.7")
    String disabledReason() default ""; 3
}

Definition of DisabledIfSystemProperty

package org.junit.jupiter.api.condition;
   ........
@Target({ElementType.TYPE, ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Repeatable(DisabledIfSystemProperties.class)
@ExtendWith(DisabledIfSystemPropertyCondition.class)
@API(status = STABLE, since = "5.1")
@SuppressWarnings("exports")
public @interface DisabledIfSystemProperty {
    String named(); 1
    String matches(); 2
    @API(status = STABLE, since = "5.7")
    String disabledReason() default ""; 3
}

Overview

• @EnabledIfSystemProperty runs the test only if the given property matches.
• @DisabledIfSystemProperty skips the test if the property matches.
• We can set properties with Maven using -Dname=value.
• Matching uses regular expressions.

Example

System property conditions

package com.logicbig.example;

import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.condition.DisabledIfSystemProperty;
import org.junit.jupiter.api.condition.EnabledIfSystemProperty;

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

class SystemPropertyConditionExamplesTest {

    @Test
    @EnabledIfSystemProperty(named = "demo.mode", matches = "(?i)on|yes|true")
    void runs_only_when_demo_mode_is_on() {
        assertTrue(true);
    }

    @Test
    @DisabledIfSystemProperty(named = "featureX.enabled", matches = "no|false")
    void skipped_when_featureX_enabled_is_false() {
        assertTrue(true);
    }

    @Test
    void always_runs_control() {
        assertTrue(true);
    }
}

mvn test -Dtest=SystemPropertyConditionExamplesTest -Ddemo.mode=on -DfeatureX.enabled=true

Output

D:\example-projects\junit-5\junit-5-enabling-disabling-tests\junit-5-enabled-disabled-for-system-property>mvn test -Dtest=SystemPropertyConditionExamplesTest -Ddemo.mode=on -DfeatureX.enabled=true
[INFO] Scanning for projects...
[INFO] 
[INFO] --< com.logicbig.example:junit-5-enabled-disabled-for-system-property >--
[INFO] Building junit-5-enabled-disabled-for-system-property 1.0-SNAPSHOT
[INFO]   from pom.xml
[INFO] --------------------------------[ jar ]---------------------------------
[INFO] 
[INFO] --- resources:3.3.1:resources (default-resources) @ junit-5-enabled-disabled-for-system-property ---
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory D:\example-projects\junit-5\junit-5-enabling-disabling-tests\junit-5-enabled-disabled-for-system-property\src\main\resources
[INFO] 
[INFO] --- compiler:3.14.1:compile (default-compile) @ junit-5-enabled-disabled-for-system-property ---
[INFO] No sources to compile
[INFO] 
[INFO] --- resources:3.3.1:testResources (default-testResources) @ junit-5-enabled-disabled-for-system-property ---
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory D:\example-projects\junit-5\junit-5-enabling-disabling-tests\junit-5-enabled-disabled-for-system-property\src\test\resources
[INFO] 
[INFO] --- compiler:3.14.1:testCompile (default-testCompile) @ junit-5-enabled-disabled-for-system-property ---
[INFO] Nothing to compile - all classes are up to date.
[INFO] 
[INFO] --- surefire:3.5.0:test (default-test) @ junit-5-enabled-disabled-for-system-property ---
[INFO] Using auto detected provider org.apache.maven.surefire.junitplatform.JUnitPlatformProvider
[INFO] 
[INFO] -------------------------------------------------------
[INFO]  T E S T S
[INFO] -------------------------------------------------------
[INFO] +--com.logicbig.example.SystemPropertyConditionExamplesTest - 0.068 ss
[INFO] |  +-- [OK] skipped_when_featureX_enabled_is_false - 0.033 ss
[INFO] |  +-- [OK] always_runs_control - 0.006 ss
[INFO] |  '-- [OK] runs_only_when_demo_mode_is_on - 0.001 ss
[INFO] 
[INFO] Results:
[INFO] 
[INFO] Tests run: 3, Failures: 0, Errors: 0, Skipped: 0
[INFO] 
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  2.845 s
[INFO] Finished at: 2025-12-04T06:51:24+08:00
[INFO] ------------------------------------------------------------------------

Running in IntelliJ

Example Project

Dependencies and Technologies Used:

• junit-jupiter-engine 6.0.1 (Module "junit-jupiter-engine" of JUnit)
   Version Compatibility: 5.6.0 - 6.0.1Version List
  ×

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

  • 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.

• JDK 25
• Maven 3.9.11