| <h2>Summary of Changes in version 4.6</h2> |
| |
| <h3>Max</h3> |
| |
| <p>JUnit now includes a new experimental Core, <code>MaxCore</code>. <code>MaxCore</code> |
| remembers the results of previous test runs in order to run new |
| tests out of order. <code>MaxCore</code> prefers new tests to old tests, fast |
| tests to slow tests, and recently failing tests to tests that last |
| failed long ago. There's currently not a standard UI for running |
| <code>MaxCore</code> included in JUnit, but there is a UI included in the JUnit |
| Max Eclipse plug-in at:</p> |
| |
| <p>http://www.junitmax.com/junitmax/subscribe.html</p> |
| |
| <p>Example:</p> |
| |
| <pre><code>public static class TwoUnEqualTests { |
| @Test |
| public void slow() throws InterruptedException { |
| Thread.sleep(100); |
| fail(); |
| } |
| |
| @Test |
| public void fast() { |
| fail(); |
| } |
| } |
| |
| @Test |
| public void rememberOldRuns() { |
| File maxFile = new File("history.max"); |
| MaxCore firstMax = MaxCore.storedLocally(maxFile); |
| firstMax.run(TwoUnEqualTests.class); |
| |
| MaxCore useHistory= MaxCore.storedLocally(maxFile); |
| List<Failure> failures= useHistory.run(TwoUnEqualTests.class) |
| .getFailures(); |
| assertEquals("fast", failures.get(0).getDescription().getMethodName()); |
| assertEquals("slow", failures.get(1).getDescription().getMethodName()); |
| } |
| </code></pre> |
| |
| <h3>Test scheduling strategies</h3> |
| |
| <p><code>JUnitCore</code> now includes an experimental method that allows you to |
| specify a model of the <code>Computer</code> that runs your tests. Currently, |
| the only built-in Computers are the default, serial runner, and two |
| runners provided in the <code>ParallelRunner</code> class: |
| <code>ParallelRunner.classes()</code>, which runs classes in parallel, and |
| <code>ParallelRunner.methods()</code>, which runs classes and methods in parallel.</p> |
| |
| <p>This feature is currently less stable than MaxCore, and may be |
| merged with MaxCore in some way in the future.</p> |
| |
| <p>Example:</p> |
| |
| <pre><code>public static class Example { |
| @Test public void one() throws InterruptedException { |
| Thread.sleep(1000); |
| } |
| @Test public void two() throws InterruptedException { |
| Thread.sleep(1000); |
| } |
| } |
| |
| @Test public void testsRunInParallel() { |
| long start= System.currentTimeMillis(); |
| Result result= JUnitCore.runClasses(ParallelComputer.methods(), |
| Example.class); |
| assertTrue(result.wasSuccessful()); |
| long end= System.currentTimeMillis(); |
| assertThat(end - start, betweenInclusive(1000, 1500)); |
| } |
| </code></pre> |
| |
| <h3>Comparing double arrays</h3> |
| |
| <p>Arrays of doubles can be compared, using a delta allowance for equality:</p> |
| |
| <pre><code>@Test |
| public void doubleArraysAreEqual() { |
| assertArrayEquals(new double[] {1.0, 2.0}, new double[] {1.0, 2.0}, 0.01); |
| } |
| </code></pre> |
| |
| <h3><code>Filter.matchDescription</code> API</h3> |
| |
| <p>Since 4.0, it has been possible to run a single method using the <code>Request.method</code> |
| API. In 4.6, the filter that implements this is exposed as <code>Filter.matchDescription</code>.</p> |
| |
| <h3>Documentation</h3> |
| |
| <ul> |
| <li><p>A couple classes and packages that once had empty javadoc have been |
| doc'ed.</p></li> |
| <li><p>Added how to run JUnit from the command line to the cookbook.</p></li> |
| <li><p>junit-4.x.zip now contains build.xml</p></li> |
| </ul> |
| |
| <h3>Bug fixes</h3> |
| |
| <ul> |
| <li>Fixed overly permissive @DataPoint processing (2191102)</li> |
| <li>Fixed bug in test counting after an ignored method (2106324)</li> |
| </ul> |