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How to Mock Static Methods  Michael Minella. We have all read it or heard someone talk about it. Static Methods are Death to Testability. You can read the article here http bit. P. Something that has become a fundimental piece of the language all you need to do is look at the Apache Commons project to see that is so bad that it must be avoided at all costs in the name of testing. Gosling or someone on his team put it in the language for a reason and to avoid those uses solely because your toolset doesnt support the testing of it is nonsense. Time to get a new toolset. In this tutorial we will cover how to mock static methods gasp using Power. Mock. Using Power. Mock. Lets start off with the basics. U/VLsO8QmDjJI/AAAAAAAAN_U/a-GVwnDaZ78/s1600/One%2BPiece%2BGrand%2BAdventure%2B(1).jpg' alt='Download Game One Piece Pc Ringan Batata' title='Download Game One Piece Pc Ringan Batata' />To use Power. Mock, youll have to download it from Google Code here http code. POM if you are using maven. Download Game One Piece Pc Ringan TulangOnce Power. Mock is added to your project, mocking static methods is actually very easy. Mocking a Static Method. As in all of my previous tutorials, were going to do this one via TDD Test Driven Development. For this example, we are going to assume we have the following utility class. Inet. Address. import java. Unknown. Host. Exception. Network. Util. public static String get. Untuk mengurangi kekeliruan pemahaman kita tentang plastik, sebaiknya kita ketahui dulu apa pengertian, jenis, manfaat, dan bahaya dari plastik tersebut. Polacy zwykli myli dwa pojcia Rumuni i Cyganie. Dla czci, moe nawet wikszoci z nas, s one synonimami. To jednak bdne mylenie Rumuni s. Michael Minella. com Michaels corner of cyberspace. We have all read it or heard someone talk about it. Static Methods are Death to Testability. Search the worlds information, including webpages, images, videos and more. Google has many special features to help you find exactly what youre looking for. Philosophy Metaphilosophy Metaphysics Epistemology Ethics Politics Aesthetics Thought Mental Cognition. Download Game One Piece Pc Ringan' title='Download Game One Piece Pc Ringan' />A continuation of the FindAnyFloor Article Formaldehyde Emission Standards for Green Adhesives E1 and E0 are the European formaldehyde emission standards. E1 emission. Local. Hostname. String hostname. Inet. Address addr Inet. Address. get. Local. Host. Get hostname. Download Tally 9 Cracked Software. Host. Name. catch Unknown. Host. Exception e. As you can see, it returns the human readable version of the machine name. Now there is an issue with this. Chances are that the above code would run fine if we let it run through a unit test regardless of what environment we are in ix, Windows, OS X, etc. The issue is, however, we cannot predict the output. One of the key aspects of unit testing is the ability to predict the output of our test based on a given input. In this case, as we move our test from environment to environment, the results of the above method will change. Enter Power. Mock. So the requirements for our use of the above utility class is to create a URL to an image hosted on the local machine. The final URL should be in the following format. LOCALMACHINENAMEmyapplicationimagesmyimage. Now you can stop laughing at the example. The purpose of this tutorial is not to find some painful testing feature, its to show where the ability to mock static method calls is useful. So lets start our test. Run. With. import org. Prepare. For. Test. Run. With Power. Mock. Runner. class. Prepare. For. Test Network. Util. class. public class URLGenerator. Test. Youll notice immediately that there are two annotations needed to use Power. Mock. First, we dont use the default JUnit runner when we use Power. Mock. Power. Mock provides its own runner which we will need to use, specified with the Run. With annotation. The other annotation we are using Prepare. For. Test is used to identify all of the classes that Power. Mock will be mocking. In our case, we will be mocking one class, so we pass in only one. If we have multiple, it can take an array of classes as well. The creation of our set. Up and shell test methods should look normal. Nothing exciting here. Run. With. import org. Prepare. For. Test. Power. Mock. mock. Static. import static org. Power. Mock. replay. All. import static org. Power. Mock. verify. All. import static org. Easy. Mock. expect. Run. With Power. Mock. Runner. class. Prepare. For. Test Network. Util. class. public class URLGenerator. Test. private URLGenerator generator. Up. generator new URLGenerator. Generate. URL. Now lets focus specifically on the test method. Were essentially going to do XYZ things. Mock the class. Since static methods exist at the class level, we create a partial mock of all static methods with the mock. Static method. Declare our expectations as normal. One of the biggest points about Power. Mock is that the API is designed to mesh well with Easy. Mock. To record our expectations we do exactly as we normally would. Replay our recorded expectations. Power. Mock has a nice little method called replay. All. Instead of listing out all of the mock objects we want to replay, this method handles it for us. Execute the method under test. Nothing exciting here. Verify our execution. Power. Mock provides the compliment to replay. All with verify. All. Assert the results. Normal JUnit applies here. Generate. URL. Static Network. Util. Network. Util. Local. Hostname. Return localhost. All. String results generator. URL. verify. All. Equals. http localhostmyapplicationimagesmyimage. Thats it. The above code is all you need to test those nasty static methods. The untestable is now testable. Oh, wait. I guess we should write the actual implementing code so we can prove all of this works. Ok, check out the method that implements this test below. URLGenerator. public String generate. URL. return http. Network. Util. get. Local. Hostname. I never said it would be pretty. But what it does do is it implements the test correctly and demonstrates my point. So thats it. Mocking static methods and other untestable code is actually quite easy when you put Power. Mock to work. One thing I want to point out that Power. Mock helped me see. Just because you cant do something with your current toolset doesnt mean that its bad. It just means you may need to re evaluate your toolset. As always, Im excited to read your comments Have you used Power.