com.pholser.junit.quickcheck.generator.Generator.doShrink()方法的使用及代码示例

x33g5p2x  于2022-01-20 转载在 其他  
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本文整理了Java中com.pholser.junit.quickcheck.generator.Generator.doShrink()方法的一些代码示例,展示了Generator.doShrink()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台,是从一些精选项目中提取出来的代码,具有较强的参考意义,能在一定程度帮忙到你。Generator.doShrink()方法的具体详情如下:
包路径:com.pholser.junit.quickcheck.generator.Generator
类名称:Generator
方法名:doShrink

Generator.doShrink介绍

[英]Gives some objects that are "smaller" than a given "larger" object.

Unless overridden, a generator will produce an empty list of "smaller" values.
[中]给出一些比给定的“较大”对象“小”的对象。
除非重写,否则生成器将生成“较小”值的空列表。

代码示例

代码示例来源:origin: pholser/junit-quickcheck

@Override
public List<T> doShrink(SourceOfRandomness random, T larger) {
  return delegate.doShrink(random, larger);
}

代码示例来源:origin: pholser/junit-quickcheck

/**
 * {@inheritDoc}
 *
 * <p>Generators first ensure that they {@linkplain #canShrink(Object) can
 * participate} in shrinking the given value, and if so, they
 * {@linkplain #doShrink(SourceOfRandomness, Object) produce shrinks}.</p>
 */
@Override public final List<T> shrink(SourceOfRandomness random, Object larger) {
  if (!canShrink(larger)) {
    throw new IllegalStateException(
      getClass() + " not capable of shrinking " + larger);
  }
  return doShrink(random, narrow(larger));
}

代码示例来源:origin: pholser/junit-quickcheck

@Test public void shrinkingChoosesAComponentCapableOfShrinkingTheValue() {
    stub(first.canShrink(7)).toReturn(true);
    stub(second.canShrink(7)).toReturn(false);
    stub(third.canShrink(7)).toReturn(true);
    when(first.types()).thenReturn(singletonList(Integer.class));
    when(first.doShrink(random, 7)).thenReturn(asList(3, 6));
    when(random.nextInt(9)).thenReturn(1);

    assertEquals(asList(3, 6), composite.shrink(random, 7));
    verify(first, atLeastOnce()).doShrink(random, 7);
  }
}

代码示例来源:origin: com.pholser/junit-quickcheck-core

/**
 * {@inheritDoc}
 *
 * <p>Generators first ensure that they {@linkplain #canShrink(Object) can
 * participate} in shrinking the given value, and if so, they
 * {@linkplain #doShrink(SourceOfRandomness, Object) produce shrinks}.</p>
 */
@Override public final List<T> shrink(SourceOfRandomness random, Object larger) {
  if (!canShrink(larger)) {
    throw new IllegalStateException(
      getClass() + " not capable of shrinking " + larger);
  }
  return doShrink(random, narrow(larger));
}

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