Question

I have a series of functional tests against a web application that correctly run, but each require the class level setup and teardown provided with the @BeforeClass and @AfterClass annotations, and hence require JUnit 4.0 or above.

Now I want to perform load testing using a small number of these functional tests, which simulate a large number of users requesting the related page of the web application. In order for each user to have their own ‘simulated browser’ in JWebUnit, I need to use a TestFactory in JUnitPerf to instantiate the class under test, but since JUnit 4 tests are annotated with @Test instead of being derived from TestCase, I’m getting a TestFactory must be constructed with a TestCase class exception.

Is anyone successfully using JUnitPerf and its TestFactory with JUnit 4? And what is the secret sauce that lets it all work?

Answer 1

You need a JUnit4 aware TestFactory. I’ve included one below.

import junit.framework.JUnit4TestAdapter; import junit.framework.TestCase; import junit.framework.TestSuite;  import com.clarkware.junitperf.TestFactory;  class JUnit4TestFactory extends TestFactory {      static class DummyTestCase extends TestCase {         public void test() {         }     }      private Class<?> junit4TestClass;      public JUnit4TestFactory(Class<?> testClass) {         super(DummyTestCase.class);         this.junit4TestClass = testClass;     }      @Override     protected TestSuite makeTestSuite() {         JUnit4TestAdapter unit4TestAdapter = new JUnit4TestAdapter(this.junit4TestClass);         TestSuite testSuite = new TestSuite('JUnit4TestFactory');         testSuite.addTest(unit4TestAdapter);         return testSuite;     }  }