Download PDF by Vincent Massol, Ted Husted: JUnit in Action

By Vincent Massol, Ted Husted

ISBN-10: 1930110995

ISBN-13: 9781930110991

ISBN-10: 1932394036

ISBN-13: 9781932394030

JUnit in Action
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1 Selecting a test runner To make running tests as quick and easy as possible, JUnit provides a selection of test runners. The test runners are designed to execute your tests and provide you with statistics regarding the outcome. Because they are specifically designed for this purpose, the test runners can be very easy to use. 3 shows the Swing test runner in action. The progress indicator running across the screen is the famous JUnit green bar. Keep the bar green to keep the code clean is the JUnit motto.

2 Creating unit test methods Fixtures are a great way to reuse setup code. But there are many other common tasks that many tests perform over and over again. The JUnit framework encapsulates the most common testing tasks with an array of assert methods. The assert methods can make writing unit tests much easier. 2, we introduced the Test interface that both TestSuite and TestCase implement. The Test interface specifies only two methods, countTestCases and run. But in writing the TestCalculator case, you also used an assert method inherited from the base TestCase class.

10 JUnit executes a test method and notifies test listeners about failure, errors, and the end of the test. book Page 37 Friday, October 17, 2003 2:23 PM 37 Stepping through TestCalculator 4 When the tearDown method has finished executing, the test is finished. The TestResult signals this fact to its listeners by calling the endTest method (e). 11. :TestRunner :TestCase suite() Or create a default TestSuite if no suite() method exists. 8 Summary As you saw in chapter 1, it’s not hard to jump in and begin writing JUnit tests for your applications.

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JUnit in Action by Vincent Massol, Ted Husted


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