一.概述
那么如果在执行的过程中有异常，该怎么办呢，我们是否要查看异常信息呢，于是乎如何得到我们所需要的异常信息成为
我们需要思考的问题，该怎么解决呢，其实so eazy!tesgNG的测试用例监听器可以帮助我们解决这个问题。
二.监听断言类AssertionListener
1 public class AsserttionListener extends TestListenerAdapter{ 2 3 private Log log=new Log(this.getClass()); 4 5 @Override 6 public void onTestStart(ITestResult result) { 7 // TODO Auto-generated method stub 8 Assertion.begin(); 9 } 10 11 @Override 12 public void onTestFailure(ITestResult tr) { 13 // TODO Auto-generated method stub 14 this.handleAssertion(tr); 15 } 16 17 @Override 18 public void onTestSkipped(ITestResult tr) { 19 // TODO Auto-generated method stub 20 this.handleAssertion(tr); 21 } 22 23 @Override 24 public void onTestSuccess(ITestResult tr) { 25 // TODO Auto-generated method stub 26 this.handleAssertion(tr); 27 } 28 29 private int index; 30 31 private boolean isNew=false; 32 33 /** 34 * 得到测试类所需的测试异常信息 35 * @param tr 36 */ 37 private void handleAssertion(ITestResult tr){ 38 Throwable throwable=tr.getThrowable(); 39 if(!Assertion.flag||throwable!=null){ 40 if(throwable==null){ 41 throwable=new Throwable(); 42 isNew=true; 43 } 44 StackTraceElement[] alltrace=new StackTraceElement[0]; 45 for (Error e : Assertion.errors) { 46 alltrace=this.getAllStackTraceElement(tr, e, null, alltrace); 47 } 48 if(!isNew){ 49 alltrace=this.getAllStackTraceElement(tr, null, throwable, alltrace); 50 }else{ 51 isNew=false; 52 } 53 throwable.setStackTrace(alltrace); 54 tr.setThrowable(throwable); 55 Assertion.flag=true; 56 Assertion.errors.clear(); 57 tr.setStatus(ITestResult.FAILURE); 58 } 59 } 60 61 /** 62 * 得到测试类需要的StackTraceElement数组 63 * @param tr 64 * @param e 65 * @param throwable 66 * @param alltrace 67 * @return 68 */ 69 private StackTraceElement[] getAllStackTraceElement(ITestResult tr,Error e,Throwable throwable,StackTraceElement[] alltrace){ 70 StackTraceElement[] traces=(e==null?throwable.getStackTrace():e.getStackTrace()); 71 StackTraceElement[] et=this.getKeyStackTrace(tr, traces); 72 String msg=(e==null?throwable.getMessage():e.getMessage()); 73 StackTraceElement[] message=new StackTraceElement[]{new StackTraceElement("message : "+msg+" in method : ",tr.getMethod().getMethodName(),tr.getTestClass().getRealClass().getSimpleName(),index)}; 74 index=0; 75 alltrace=this.merge(alltrace, et); 76 alltrace=this.merge(alltrace, message); 77 return alltrace; 78 } 79 80 /** 81 * 根据测试类名获得该测试类的StackTraceElement数组 82 * @param tr 83 * @param stackTraceElements 84 * @return 85 */ 86 private StackTraceElement[] getKeyStackTrace(ITestResult tr,StackTraceElement[] stackTraceElements){ 87 List<StackTraceElement> ets=new ArrayList<StackTraceElement>(); 88 for (StackTraceElement stackTraceElement : ets) { 89 if(stackTraceElement.getClassName().equals(tr.getTestClass().getName())){ 90 ets.add(stackTraceElement); 91 index=stackTraceElement.getLineNumber(); 92 } 93 } 94 StackTraceElement[] et=new StackTraceElement[ets.size()]; 95 for (int i = 0; i < et.length; i++) { 96 et[i]=ets.get(i); 97 } 98 return et; 99 } 100 101 /** 102 * 合并两个StackTraceElement数组 103 * @param trace1 104 * @param trace2 105 * @return 106 */ 107 private StackTraceElement[] merge(StackTraceElement[] trace1,StackTraceElement[] trace2){ 108 StackTraceElement[] ste=new StackTraceElement[trace1.length+trace2.length]; 109 for (int i = 0; i < trace1.length; i++) { 110 ste[i]=trace1[i]; 111 } 112 for (int i = 0; i < trace2.length; i++) { 113 ste[trace1.length+i]=trace2[i]; 114 } 115 return ste; 116 } |
