"Java from getting started to giving up" javase introductory article: unit testing

Unit testing In fact there is nothing to say, look directly at the operation step!

Let's test the previous article about how Xiao Ming buys food.

First step: Right-click on the Xiao Ming class and then new one junit Test case

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The second step: continue to point next, the contents of the picture believe that we can understand it, if you do not understand, it will either study, or give up, haha!

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Step three: Tick the method you want to test:

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Fourth step: Click OK to import the jar packages you need to use with JUnit

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Fifth step: Automatically generated a xxxtest class, which contains a testxxx method, which has a @test annotation, because we do not check the initialization method, so all the code is written directly in the Testxxx method.

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Sixth step: Write the assertion, enter the test data, and then determine whether the return result of the method is our predicted value, if so, the method tested is not a problem under the current data. In practice, each case will be tested in a few sets of boundary data to determine whether the method has a bug, the test results have two cases, if the green means that the test results and the same prediction results, the method is not a problem , otherwise the method has a bug.

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Unit testing is so simple!!! 650) this.width=650; "src=" Http://img.baidu.com/hi/jx2/j_0019.gif "alt=" J_0019.gif "/>

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"Java from getting started to giving up" javase introductory article: unit testing