testcartdatajunit1.java~28~

购物车模块实例。购物车模块可以浏览商品类别；可以根据商品类别浏览商品信息；可以购买商品；可以查看购物车的商品；可以修改购买商品的数量和删除购买的商品。

package junittest;

import junit.framework.*;
import cmscartpro.*;
import javax.naming.*;
import java.util.Properties;
import javax.rmi.PortableRemoteObject;
import java.rmi.RemoteException;

public class TestCartDataJUnit1 extends TestCase {
  private static final String ERROR_NULL_REMOTE = "Remote interface reference is null. "
      + "It must be created by calling one of the Home interface methods first.  "
      + "Make sure that the setUp() method calls one of the create() or finder Home "
      + "interfacewrappers, or the userTableCPRemote remote reference is assigned there "
      + "in some other way.";
  private static final int MAX_OUTPUT_LINE_LENGTH = 100;
  private boolean logging = false;
  private CartDataHome cartDataHome = null;
  private CartData cartData = null;

  public TestCartDataJUnit1(String name) {
    super(name);
  }

  public void initialize() throws Exception {
    //创建服务器查找类
    Context context = getInitialContext();
    //取得服务器的EJB对象
    Object ref = context.lookup("CartData");
    //取得EJB的本地接口
    cartDataHome = (CartDataHome) PortableRemoteObject.narrow(ref, CartDataHome.class);
  }
  //服务器查找类初始化方法
  private Context getInitialContext() throws Exception {
    String url = "t3://bemyfriend:7001";
    String user = null;
    String password = null;
    Properties properties = null;
    try {
      properties = new Properties();
      properties.put(Context.INITIAL_CONTEXT_FACTORY, "weblogic.jndi.WLInitialContextFactory");
      properties.put(Context.PROVIDER_URL, url);
      if (user != null) {
        properties.put(Context.SECURITY_PRINCIPAL, user);
        properties.put(Context.SECURITY_CREDENTIALS, password == null ? "" : password);
      }
      return new InitialContext(properties);
    }
    catch(Exception e) {
      System.out.println("Unable to connect to WebLogic server at " + url);
      System.out.println("Please make sure that the server is running.");
      throw e;
    }
  }

  public void setUp() throws Exception {
    super.setUp();
    initialize();
    //取得EJB的远程接口
    create();
  }

  public void tearDown() throws Exception {
    cartDataHome = null;
    cartData = null;
    super.tearDown();
  }

  public CartData create() throws Exception {
    cartData = cartDataHome.create();
    return cartData;
  }
  //测试取得产品类别的方法
  public void testGetCategories() throws RemoteException {
    assertNotNull(ERROR_NULL_REMOTE, cartData);
    int expectedReturnCount = 8;
    String[][] actualReturn = cartData.getCategories();
    assertEquals("返回的记录数", expectedReturnCount, actualReturn.length);
    if (logging) {
      long endTime = System.currentTimeMillis();
      log("运行成功: getCategories()");
      log("运行时间: " + (endTime - startTime) + " ms.");
    }
  }
  //测试取得产品的方法
  public void testGetProducts() throws RemoteException {
    int categoryId = 0;
    assertNotNull(ERROR_NULL_REMOTE, cartData);
    cartData.getProducts(categoryId);
  }

  public CartDataHome getHome() {
    return cartDataHome;
  }
}