QuickCheckNG

Introduction

QuickCheckNG is a Java Annotation Processor to generate TestNG @DataProvider methods for a set of QuickCheck generators.

Building

mvn clean install

Usage

Include in your project a class named *Generators.java with a set of public static methods returning Generator instances:

package com.theoryinpractise.quickcheckng.example;

import com.theoryinpractise.quickcheckng.DataProviders;
import net.java.quickcheck.Generator;

import static net.java.quickcheck.generator.CombinedGenerators.uniqueValues;
import static net.java.quickcheck.generator.PrimitiveGenerators.strings;

@DataProviders
public class PasswordGenerators {

  public static Generator<String> validPasswords() {
    return strings("ABCDEFG123456", 6, 60);
  }

}

When compiling, the following class will be generated for you:

package com.theoryinpractise.quickcheckng.example;

import java.util.Iterator;
import org.testng.annotations.DataProvider;
import static com.theoryinpractise.quickcheckng.testng.GeneratorProvider.toObjectArrayIterator;

public final class PasswordGeneratorsDataProviders {

  /**
   * A TestNG @DataProvider for the validPasswords quickcheck generator
   */
  @DataProvider
  public static final Iterator<Object[]> validPasswords() {
    return toObjectArrayIterator(PasswordGenerators.validPasswords());
  }

}

The generated @DataProvider method simply wraps the QuickCheck Generator, wrapping each generated value in a 1 element object array to be passed to a TestNG test:

@Test(dataProviderClass = PasswordGeneratorsDataProviders.class, dataProvider = "validPasswords")
public void testPasswordLengths(String password) {
  try {
    UserManagerImpl.validatePassword(password);
  } catch (SmxValidationFailureException e) {
    fail("Valid length password should not fail: " + password + " - " + e.getMessage());
  }
}

License

Apache 2.0