ClassOrderer.Random

java.lang.Object
- org.junit.jupiter.api.ClassOrderer.Random

All Implemented Interfaces:

ClassOrderer

Enclosing interface:

ClassOrderer
```
public static class ClassOrderer.Random
extends java.lang.Object
implements ClassOrderer
```
ClassOrderer that orders classes pseudo-randomly.
Custom Seed

By default, the random seed used for ordering classes is the value returned by System.nanoTime() during static class initialization. In order to support repeatable builds, the value of the default random seed is logged at CONFIG level. In addition, a custom seed (potentially the default seed from the previous test plan execution) may be specified via the "junit.jupiter.execution.order.random.seed" configuration parameter which can be supplied via the Launcher API, build tools (e.g., Gradle and Maven), a JVM system property, or the JUnit Platform configuration file (i.e., a file named junit-platform.properties in the root of the class path). Consult the User Guide for further information.

See Also:

RANDOM_SEED_PROPERTY_NAME, Random

Nested Class Summary
- Nested classes/interfaces inherited from interface org.junit.jupiter.api.ClassOrderer
  ClassOrderer.ClassName, ClassOrderer.DisplayName, ClassOrderer.OrderAnnotation, ClassOrderer.Random

Field Summary

Fields
Modifier and Type	Field	Description
`static java.lang.String`	`RANDOM_SEED_PROPERTY_NAME`	Property name used to set the random seed used by this `ClassOrderer`: "junit.jupiter.execution.order.random.seed"

Fields inherited from interface org.junit.jupiter.api.ClassOrderer
DEFAULT_ORDER_PROPERTY_NAME

Constructor Summary

Constructors
Constructor Description

Random()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`orderClasses(ClassOrdererContext context)`	Order the classes encapsulated in the supplied `ClassOrdererContext` pseudo-randomly.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - RANDOM_SEED_PROPERTY_NAME
```
public static final java.lang.String RANDOM_SEED_PROPERTY_NAME
```
    Property name used to set the random seed used by this ClassOrderer: "junit.jupiter.execution.order.random.seed"
    The same property is used by MethodOrderer.Random for consistency between the two random orderers.
    Supported Values
    
    Supported values include any string that can be converted to a Long via Long.valueOf(String).
    If not specified or if the specified value cannot be converted to a Long, the default random seed will be used (see the class-level Javadoc for details).
    
    See Also:
    
    MethodOrderer.Random, Constant Field Values
- Constructor Detail
  - Random
```
public Random()
```
- Method Detail
  - orderClasses
```
public void orderClasses(ClassOrdererContext context)
```
    Order the classes encapsulated in the supplied ClassOrdererContext pseudo-randomly.
    
    Specified by:
    
    orderClasses in interface ClassOrderer
    
    Parameters:
    
    context - the ClassOrdererContext containing the class descriptors to order; never null