com.carrotsearch.randomizedtesting

Class AssertingRandom

java.lang.Object

java.util.Random

com.carrotsearch.randomizedtesting.AssertingRandom

All Implemented Interfaces:

java.io.Serializable

public final class AssertingRandom
extends java.util.Random

A random with a delegate, preventing Random.setSeed(long) and locked to be used by a single thread.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
AssertingRandom(java.lang.Thread owner, java.util.Random delegate) Creates an instance to be used by owner thread and delegating to delegate until destroy()ed.

Method Summary

Modifier and Type	Method and Description
protected java.lang.Object	clone()
void	destroy() This object will no longer be usable after this method is called.
boolean	equals(java.lang.Object obj)
int	hashCode()
static boolean	isVerifying()
protected int	next(int bits)
boolean	nextBoolean()
void	nextBytes(byte[] bytes)
double	nextDouble()
float	nextFloat()
double	nextGaussian()
int	nextInt()
int	nextInt(int n)
long	nextLong()
void	setSeed(long seed)
java.lang.String	toString()

Methods inherited from class java.util.Random

doubles, doubles, doubles, doubles, ints, ints, ints, ints, longs, longs, longs, longs

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

AssertingRandom

public AssertingRandom(java.lang.Thread owner,
                       java.util.Random delegate)

Creates an instance to be used by owner thread and delegating to delegate until destroy()ed.

Method Detail

next

protected int next(int bits)

Overrides:

next in class java.util.Random

nextBoolean

public boolean nextBoolean()

Overrides:

nextBoolean in class java.util.Random

nextBytes

public void nextBytes(byte[] bytes)

Overrides:

nextBytes in class java.util.Random

nextDouble

public double nextDouble()

Overrides:

nextDouble in class java.util.Random

nextFloat

public float nextFloat()

Overrides:

nextFloat in class java.util.Random

nextGaussian

public double nextGaussian()

Overrides:

nextGaussian in class java.util.Random

nextInt

public int nextInt()

Overrides:

nextInt in class java.util.Random

nextInt

public int nextInt(int n)

Overrides:

nextInt in class java.util.Random

nextLong

public long nextLong()

Overrides:

nextLong in class java.util.Random

setSeed

public void setSeed(long seed)

Overrides:

setSeed in class java.util.Random

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

destroy

public void destroy()

This object will no longer be usable after this method is called.

clone

protected java.lang.Object clone()
                          throws java.lang.CloneNotSupportedException

Overrides:

clone in class java.lang.Object

Throws:

java.lang.CloneNotSupportedException

isVerifying

public static boolean isVerifying()

Returns:

Return true if this class is verifying sharing and lifecycle assertions.

See Also:

"https://github.com/randomizedtesting/randomizedtesting/issues/234"