原理:
1.自已构造一个断言类,把Assert.assertEquals给try catch住。
2.利用testng的监听类在测试方法运行结束后进行分析。
代码:
断言类:
package com.demo; import java.util.ArrayList; import java.util.List; import org.testng.Assert; public class Assertion { public static boolean flag = true; public static List<Error> errors = new ArrayList<Error>(); public static void verifyEquals(Object actual, Object expected){ try{ Assert.assertEquals(actual, expected); }catch(Error e){ errors.add(e); flag = false; } } public static void verifyEquals(Object actual, Object expected, String message){ try{ Assert.assertEquals(actual, expected, message); }catch(Error e){ errors.add(e); flag = false; } } }
监听类:
package com.demo; import java.util.ArrayList;import java.util.List; import org.testng.ITestResult;import org.testng.TestListenerAdapter; public class AssertionListener extends TestListenerAdapter { @Override public void onTestStart(ITestResult result) { Assertion.flag = true; Assertion.errors.clear(); } @Override public void onTestFailure(ITestResult tr) { this.handleAssertion(tr); } @Override public void onTestSkipped(ITestResult tr) { this.handleAssertion(tr); } @Override public void onTestSuccess(ITestResult tr) { this.handleAssertion(tr); } private int index = 0; private void handleAssertion(ITestResult tr){ if(!Assertion.flag){ Throwable throwable = tr.getThrowable(); if(throwable==null){ throwable = new Throwable(); } StackTraceElement[] traces = throwable.getStackTrace(); StackTraceElement[] alltrace = new StackTraceElement[0]; for (Error e : Assertion.errors) { StackTraceElement[] errorTraces = e.getStackTrace(); StackTraceElement[] et = this.getKeyStackTrace(tr, errorTraces); StackTraceElement[] message = new StackTraceElement[]{new StackTraceElement("message : "+e.getMessage()+" in method : ", tr.getMethod().getMethodName(), tr.getTestClass().getRealClass().getSimpleName(), index)}; index = 0; alltrace = this.merge(alltrace, message); alltrace = this.merge(alltrace, et); } if(traces!=null){ traces = this.getKeyStackTrace(tr, traces); alltrace = this.merge(alltrace, traces); } throwable.setStackTrace(alltrace); tr.setThrowable(throwable); Assertion.flag = true; Assertion.errors.clear(); tr.setStatus(ITestResult.FAILURE); } } private StackTraceElement[] getKeyStackTrace(ITestResult tr, StackTraceElement[] stackTraceElements){ List<StackTraceElement> ets = new ArrayList<StackTraceElement>(); for (StackTraceElement stackTraceElement : stackTraceElements) { if(stackTraceElement.getClassName().equals(tr.getTestClass().getName())){ ets.add(stackTraceElement); index = stackTraceElement.getLineNumber(); } } StackTraceElement[] et = new StackTraceElement[ets.size()]; for (int i = 0; i < et.length; i++) { et[i] = ets.get(i); } return et; } private StackTraceElement[] merge(StackTraceElement[] traces1, StackTraceElement[] traces2){ StackTraceElement[] ste = new StackTraceElement[traces1.length+traces2.length]; for (int i = 0; i < traces1.length; i++) { ste[i] = traces1[i]; } for (int i = 0; i < traces2.length; i++) { ste[traces1.length+i] = traces2[i]; } return ste; }}
测试类:
package com.demo; import org.testng.annotations.Listeners; import org.testng.annotations.Test; @Listeners({com.demo.AssertionListener.class}) public class Test14 { @Test public void testAssert3(){ Assertion.verifyEquals(2, 3, "比较两个数是否相等:"); Assertion.verifyEquals(1, 2, "比较两个数是否相等:"); } @Test public void testAssert4(){ Assertion.verifyEquals(4, 3, "比较两个数是否相等:"); Assertion.verifyEquals(2, 2, "比较两个数是否相等:"); } }
时间: 2024-10-12 05:27:58