Package com.pholser.junit.quickcheck.guava.generator

Class PredicateGenerator<T>

java.lang.Object

com.pholser.junit.quickcheck.generator.Generator<T>

com.pholser.junit.quickcheck.generator.ComponentizedGenerator<com.google.common.base.Predicate>

com.pholser.junit.quickcheck.guava.generator.PredicateGenerator<T>

Type Parameters:

T - type of parameter of produced predicate

All Implemented Interfaces:

Gen<com.google.common.base.Predicate>, Shrink<com.google.common.base.Predicate>

public class PredicateGenerator<T>
extends ComponentizedGenerator<com.google.common.base.Predicate>

Produces values of type Predicate.

Field Summary

Fields

Modifier and Type	Field	Description
private Generator<Boolean>	generator

Constructor Summary

Constructors

Constructor	Description
PredicateGenerator()

Method Summary

Modifier and Type	Method	Description
com.google.common.base.Predicate<T>	generate(SourceOfRandomness random, GenerationStatus status)	Generates a value, possibly influenced by a source of randomness and metadata about the generation.
int	numberOfNeededComponents()	This is intended for use only by junit-quickcheck itself, and not by creators of custom generators.
void	provide(Generators provided)	Supplies the available generators to this one.

Methods inherited from class com.pholser.junit.quickcheck.generator.ComponentizedGenerator

addComponentGenerators, canGenerateForParametersOfTypes, canRegisterAsType, componentGenerators, configure, hasComponents

Methods inherited from class com.pholser.junit.quickcheck.generator.Generator

canShrink, compatibleWithTypeParameter, configurationAnnotationsOn, configure, copy, doShrink, gen, gen, magnitude, narrow, shrink, types

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.pholser.junit.quickcheck.generator.Gen

_gen, filter, filterOptional, flatMap, map, times

Field Details

generator

private Generator<Boolean> generator

Constructor Details

PredicateGenerator

public PredicateGenerator()

Method Details

provide

public void provide(Generators provided)

Description copied from class: Generator

Supplies the available generators to this one.

This is intended for use only by junit-quickcheck itself, and not by creators of custom generators.

Overrides:

provide in class ComponentizedGenerator<com.google.common.base.Predicate>

Parameters:

provided - repository of available generators

generate

public com.google.common.base.Predicate<T> generate(SourceOfRandomness random,
 GenerationStatus status)

Description copied from interface: Gen

Generates a value, possibly influenced by a source of randomness and metadata about the generation.

Parameters:

random - source of randomness to be used when generating the value

status - an object that can be used to influence the generated value. For example, generating lists can use the size method to generate lists with a given number of elements.

Returns:

the generated value

numberOfNeededComponents

public int numberOfNeededComponents()

Description copied from class: Generator

This is intended for use only by junit-quickcheck itself, and not by creators of custom generators.

Overrides:

numberOfNeededComponents in class Generator<com.google.common.base.Predicate>

Returns:

how many component generators this generator needs

See Also:

• Generator.addComponentGenerators(java.util.List)