Module de.cuioss.test.generator

Package de.cuioss.test.generator.internal.net.java.quickcheck

Class QuickCheck

java.lang.Object

de.cuioss.test.generator.internal.net.java.quickcheck.QuickCheck

public class QuickCheck
extends Object

QuickCheck is an implementation of the Haskell QuickCheck generator based test tool (...).

Field Summary

Fields

Modifier and Type	Field	Description
static final int	MAX_NUMBER_OF_RUNS
static final int	MIN_NUMBER_OF_RUNS
static final String	SYSTEM_PROPERTY_RUNS

Constructor Summary

Constructors

Constructor	Description
QuickCheck()

Method Summary

Modifier and Type	Method	Description
static <T> void	forAll(int runs, Generator<T> generator, Characteristic<T> characteristic)	Check the Characteristic for all values generated by the given Generator.
static <T> void	forAll(Generator<T> generator, Characteristic<T> characteristic)	Check the Characteristic for all values generated by the given Generator.
static <T> void	forAllVerbose(int runs, Generator<T> generator, Characteristic<T> characteristic)	Check the Characteristic for all values generated by the given Generator.
static <T> void	forAllVerbose(Generator<T> generator, Characteristic<T> characteristic)	Check the Characteristic for all values generated by the given Generator.
static int	getDefaultNumberOfRuns()
static void	guard(boolean predicate)	All executions of Characteristic.specify(Object) which execute this method will be skipped and a new test case will be generated.

Methods inherited from class java.lang.Object

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

Field Details

MAX_NUMBER_OF_RUNS

public static final int MAX_NUMBER_OF_RUNS

See Also:

• Constant Field Values

MIN_NUMBER_OF_RUNS

public static final int MIN_NUMBER_OF_RUNS

See Also:

• Constant Field Values

SYSTEM_PROPERTY_RUNS

public static final String SYSTEM_PROPERTY_RUNS

Constructor Details

QuickCheck

public QuickCheck()

Method Details

forAll

public static <T> void forAll(Generator<T> generator,
 Characteristic<T> characteristic)
                       throws GeneratorException,
CharacteristicException

Check the Characteristic for all values generated by the given Generator. The execution will fail fast if any of the calls of the Characteristic.specify(Object) method throws an exception.

Type Parameters:

T - type of the generated values

Throws:

CharacteristicException - if a characteristic is not true for a generated value

GeneratorException - if generation of the next value failed.

getDefaultNumberOfRuns

public static int getDefaultNumberOfRuns()

forAll

public static <T> void forAll(int runs,
 Generator<T> generator,
 Characteristic<T> characteristic)
                       throws GeneratorException,
CharacteristicException

Check the Characteristic for all values generated by the given Generator. The execution will fail fast if any of the calls of the Characteristic.specify(Object) method throws an exception.

Type Parameters:

T - type of the generated values

Parameters:

runs - number of runs and generated values for this characteristic

Throws:

CharacteristicException - if a characteristic is not true for a generated value

GeneratorException - if generation of the next value failed.

forAllVerbose

public static <T> void forAllVerbose(Generator<T> generator,
 Characteristic<T> characteristic)
                              throws GeneratorException,
CharacteristicException

Check the Characteristic for all values generated by the given Generator. The execution will fail fast if any of the calls of the Characteristic.specify(Object) method throws an exception.

Type Parameters:

T - type of the generated values

Throws:

CharacteristicException - if a characteristic is not true for a generated value

GeneratorException - if generation of the next value failed.

forAllVerbose

public static <T> void forAllVerbose(int runs,
 Generator<T> generator,
 Characteristic<T> characteristic)
                              throws GeneratorException,
CharacteristicException

Check the Characteristic for all values generated by the given Generator. The execution will fail fast if any of the calls of the Characteristic.specify(Object) method throws an exception.

Type Parameters:

T - type of the generated values

Parameters:

runs - number of runs and generated values for this characteristic

Throws:

CharacteristicException - if a characteristic is not true for a generated value

GeneratorException - if generation of the next value failed.

guard

public static void guard(boolean predicate)

All executions of Characteristic.specify(Object) which execute this method will be skipped and a new test case will be generated. Execution will be stopped if it is not possible to create a new test cases after a reasonable amount of tries.

Parameters:

predicate - Skip the current test case if the predicate is true.