Package com.carrotsearch.randomizedtesting

Class Randomness

java.lang.Object

com.carrotsearch.randomizedtesting.Randomness

public final class Randomness
extends java.lang.Object

Per-thread, per-lifecycle state randomness defined as an initial seed and the current Random instance.

An instance of this class will be typically available from RandomizedContext. No need to instantiate manually.

See Also:

RandomizedContext

Field Summary

Fields

Modifier and Type	Field	Description
private SeedDecorator[]	decorators
private java.util.Random	random
private long	seed
private RandomSupplier	supplier

Constructor Summary

Constructors

Constructor	Description
Randomness(long seed, RandomSupplier supplier, SeedDecorator... decorators)
Randomness(java.lang.Thread owner, RandomSupplier supplier, long seed, SeedDecorator... decorators)

Method Summary

Modifier and Type	Method	Description
(package private) Randomness	clone(java.lang.Thread newOwner)
private static long	decorate(long seed, SeedDecorator[] decorators)	Decorate a given seed.
(package private) void	destroy()	Invalidate the underling randomness.
(package private) SeedDecorator[]	getDecorators()
java.util.Random	getRandom()	Random instance for this randomness.
(package private) RandomSupplier	getRandomSupplier()
(package private) long	getSeed()	Starting seed, read-only for tests.
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

seed

private final long seed

random

private final java.util.Random random

supplier

private final RandomSupplier supplier

decorators

private final SeedDecorator[] decorators

Constructor Detail

Randomness

public Randomness(java.lang.Thread owner,
                  RandomSupplier supplier,
                  long seed,
                  SeedDecorator... decorators)

Randomness

public Randomness(long seed,
                  RandomSupplier supplier,
                  SeedDecorator... decorators)

Method Detail

getRandom

public java.util.Random getRandom()

Random instance for this randomness.

getRandomSupplier

RandomSupplier getRandomSupplier()

getDecorators

SeedDecorator[] getDecorators()

clone

Randomness clone(java.lang.Thread newOwner)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

destroy

void destroy()

Invalidate the underling randomness.

getSeed

long getSeed()

Starting seed, read-only for tests.

decorate

private static long decorate(long seed,
                             SeedDecorator[] decorators)

Decorate a given seed.