shoulduseelement.java

MoMEUnit是一个单元测试的J2ME的应用程序xUnit架构实例。这是来自JUnit框架

package org.momeunit.ant.taskdefs;

import org.apache.tools.ant.Task;

/**
 * Base class for elements that contain if/unless functionality. Contains method
 * {@link #shouldUse(Task)} for quering element's allowance.
 * 
 * @author Sergio Morozov
 * @version 1.1.2
 */
public class ShouldUseElement
{
  private String ifProp = null;

  private String unlessProp = null;

  /**
   * Sets name of property to be set to allow this element.
   * 
   * @param ifProp
   *          name of property to be set to allow this element.
   * @since 1.1
   */
  public void setIf(String ifProp)
  {
    this.ifProp = ifProp != null ? ifProp.trim() : null;
  }

  /**
   * Sets name of property to be unset to allow this element.
   * 
   * @param unlessProp
   *          Sets name of property to be unset to allow this element.
   * @since 1.1
   */
  public void setUnless(String unlessProp)
  {
    this.unlessProp = unlessProp != null ? unlessProp.trim() : null;
  }

  /**
   * Queries is this element allowed.
   * 
   * @param task
   *          owning task.
   * @return <code>true</code> if this element is allowed, <code>false</code>
   *         otherwise.
   * @since 1.1
   */
  public boolean shouldUse(Task task)
  {
    return (ifProp == null || task.getProject().getProperty(ifProp) != null)
        && (unlessProp == null || task.getProject().getProperty(unlessProp) == null);
  }
}