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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package org.apache.tools.ant.taskdefs.optional.junit;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;
import java.io.PrintWriter;
import java.io.StringWriter;
import junit.framework.AssertionFailedError;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import org.apache.tools.ant.BuildException;
import org.junit.Test;
/**
* Small testcase for the runner, tests are very very very basics.
* They must be enhanced with time.
*
*/
public class JUnitTestRunnerTest{
// check that a valid method name generates no errors
@Test
public void testValidMethod(){
TestRunner runner = createRunnerForTestMethod(ValidMethodTestCase.class,"testA");
runner.run();
assertEquals(runner.getFormatter().getError(), JUnitTestRunner.SUCCESS, runner.getRetCode());
}
// check that having an invalid method name generates an error
@Test
public void testInvalidMethod(){
TestRunner runner = createRunnerForTestMethod(InvalidMethodTestCase.class,"testInvalid");
runner.run();
String error = runner.getFormatter().getError();
// might be FAILURES or ERRORS depending on JUnit version?
assertTrue(error, runner.getRetCode() != JUnitTestRunner.SUCCESS);
}
// check that having no suite generates no errors
@Test
public void testNoSuite(){
TestRunner runner = createRunner(NoSuiteTestCase.class);
runner.run();
assertEquals(runner.getFormatter().getError(), JUnitTestRunner.SUCCESS, runner.getRetCode());
}
// check that a suite generates no errors
@Test
public void testSuite(){
TestRunner runner = createRunner(SuiteTestCase.class);
runner.run();
assertEquals(runner.getFormatter().getError(), JUnitTestRunner.SUCCESS, runner.getRetCode());
}
// check that an invalid suite generates an error.
@Test
public void testInvalidSuite(){
TestRunner runner = createRunner(InvalidSuiteTestCase.class);
runner.run();
String error = runner.getFormatter().getError();
assertEquals(error, JUnitTestRunner.ERRORS, runner.getRetCode());
assertTrue(error, error.indexOf("thrown on purpose") != -1);
}
// check that something which is not a testcase generates no errors
// at first even though this is incorrect.
@Test
public void testNoTestCase(){
TestRunner runner = createRunner(NoTestCase.class);
runner.run();
// On junit3 this is a FAILURE, on junit4 this is an ERROR
int ret = runner.getRetCode();
if (ret != JUnitTestRunner.FAILURES && ret != JUnitTestRunner.ERRORS) {
fail("Unexpected result " + ret + " from junit runner");
}
// JUnit3 test
//assertEquals(runner.getFormatter().getError(), JUnitTestRunner.FAILURES, runner.getRetCode());
}
// check that an exception in the constructor is noticed
@Test
public void testInvalidTestCase(){
TestRunner runner = createRunner(InvalidTestCase.class);
runner.run();
// On junit3 this is a FAILURE, on junit4 this is an ERROR
int ret = runner.getRetCode();
if (ret != JUnitTestRunner.FAILURES && ret != JUnitTestRunner.ERRORS) {
fail("Unexpected result " + ret + " from junit runner");
}
// JUNIT3 test
//assertEquals(error, JUnitTestRunner.FAILURES, runner.getRetCode());
//@fixme as of now does not report the original stacktrace.
//assertTrue(error, error.indexOf("thrown on purpose") != -1);
}
protected TestRunner createRunner(Class<?> clazz){
return new TestRunner(new JUnitTest(clazz.getName()), null,
true, true, true);
}
protected TestRunner createRunnerForTestMethod(Class<?> clazz, String method){
return new TestRunner(new JUnitTest(clazz.getName()), new String[] {method},
true, true, true);
}
// the test runner that wrap the dummy formatter that interests us
private final static class TestRunner extends JUnitTestRunner {
private ResultFormatter formatter = new ResultFormatter();
TestRunner(JUnitTest test, String[] methods, boolean haltonerror,
boolean filtertrace, boolean haltonfailure){
super(test, methods, haltonerror, filtertrace, haltonfailure,
false, false, TestRunner.class.getClassLoader());
// use the classloader that loaded this class otherwise
// it will not be able to run inner classes if this test
// is ran in non-forked mode.
addFormatter(formatter);
}
ResultFormatter getFormatter(){
return formatter;
}
}
// dummy formatter just to catch the error
private final static class ResultFormatter implements JUnitResultFormatter {
private Throwable error;
public void setSystemOutput(String output){}
public void setSystemError(String output){}
public void startTestSuite(JUnitTest suite) throws BuildException{}
public void endTestSuite(JUnitTest suite) throws BuildException{}
public void setOutput(java.io.OutputStream out){}
public void startTest(junit.framework.Test t) {}
public void endTest(junit.framework.Test test) {}
public void addFailure(junit.framework.Test test, AssertionFailedError t) { }
public void addError(junit.framework.Test test, Throwable t) {
error = t;
}
String getError(){
if (error == null){
return "";
}
StringWriter sw = new StringWriter();
error.printStackTrace(new PrintWriter(sw));
return sw.toString();
}
}
public static class NoTestCase {
}
public static class InvalidMethodTestCase extends TestCase {
public InvalidMethodTestCase(String name){ super(name); }
public void testA(){
throw new NullPointerException("thrown on purpose");
}
}
public static class ValidMethodTestCase extends TestCase {
public ValidMethodTestCase(String name){ super(name); }
public void testA(){
// expected to be executed
}
public void testB(){
// should not be executed
throw new NullPointerException("thrown on purpose");
}
}
public static class InvalidTestCase extends TestCase {
public InvalidTestCase(String name){
super(name);
throw new NullPointerException("thrown on purpose");
}
}
public static class NoSuiteTestCase extends TestCase {
public NoSuiteTestCase(String name){ super(name); }
public void testA(){}
}
public static class SuiteTestCase extends NoSuiteTestCase {
public SuiteTestCase(String name){ super(name); }
public static junit.framework.Test suite(){
return new TestSuite(SuiteTestCase.class);
}
}
public static class InvalidSuiteTestCase extends NoSuiteTestCase {
public InvalidSuiteTestCase(String name){ super(name); }
public static junit.framework.Test suite(){
throw new NullPointerException("thrown on purpose");
}
}
}
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