junit4 | 易学教程

Apply '@Rule' after each '@Test' and before each '@After' in JUnit

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问题 I have a test suite where I am logging out of the system in @After and closing the browser in @AfterClass . I am trying to use @Rule to take failed test screenshot using Selenium for every test method. I checked manually that @Rule only runs before every @Before but I want to set it up after @Test and before @After . I couldn't find out simple solution. Any help will be appreciated. public class MorgatgeCalculatorTest { @Before public void before(){ System.out.println("I am before"); }

Continuing test execution in junit4 even when one of the asserts fails

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问题 I have my existing framework built up using Jfunc which provides a facility to continue exection even when one of the asserts in the test case fails. Jfunc uses junit 3.x framework. But now we are migrating to junit4 so I can't use Jfunc anymore and have replaced it with junit 4.10 jar. Now the problem is since we have extensively used jfunc in our framework, and with junit 4 we want to make our code continue the execution even when one of the asserts fails in a test case. Does anyone has any

How do I Dynamically create a Test Suite in JUnit 4?

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I would like to create a junit test suite using JUnit 4 where the names of the test classes to be included are not known until the test suite is run. In JUnit 3 I could do this: public final class MasterTester extends TestCase { /** * Used by junit to specify what TestCases to run. * * @return a suite containing what TestCases to run */ public static TestSuite suite() { TestSuite suite = new TestSuite(); for(Class<?> klass : gatherTestClasses()) { suite.addTestSuite(klass); } return suite; } } and let the gatherTestClasses() method deal with figuring out what test classes to run. In JUnit 4,

Pass command line arguments to JUnit test case being run programmatically

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问题 I am attempting to run a JUnit Test from a Java Class with: JUnitCore core = new JUnitCore(); core.addListener(new RunListener()); core.run(classToRun); Problem is my JUnit test requires a database connection that is currently hardcoded in the JUnit test itself. What I am looking for is a way to run the JUnit test programmatically(above) but pass a database connection to it that I create in my Java Class that runs the test, and not hardcoded within the JUnit class. Basically something like

How to test that no exception is thrown?

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I know that one way to do it would be: @Test public void foo(){ try{ //execute code that you expect not to throw Exceptions. } catch(Exception e){ fail("Should not have thrown any exception"); } } Is there any cleaner way of doing this. (Probably using Junit's @Rule ?) You're approaching this the wrong way. Just test your functionality: if an exception is thrown the test will automatically fail. If no exception is thrown, your tests will all turn up green. I have noticed this question garners interest from time to time so I'll expand a little. Background to unit testing When you're unit

Specifying order of execution in JUnit test case [duplicate]

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问题 This question already has an answer here: How to run test methods in specific order in JUnit4? 18 answers I have a test case where I add an entity, update it and delete the same. Hence, the order of execution is important here. I want it to be : Create Update Delete Strangely, for just one test case ( out of 15) , JUnit executes it in the following order : Delete Update Create . How do I tell JUnit to execute them in a specific order ? In other cases, JUnit works totally fine ( executing

Reuse spring application context across junit test classes

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We've a bunch of JUnit test cases (Integration tests) and they are logically grouped into different test classes. We are able to load Spring application context once per test class and re-use it for all test cases in a JUnit test class as mentioned in http://static.springsource.org/spring/docs/current/spring-framework-reference/html/testing.html However, we were just wondering if there is a way to load Spring application context only once for a bunch of JUnit test classes. FWIW, we use Spring 3.0.5, JUnit 4.5 and use Maven to build the project. Yes, this is perfectly possible. All you have to

Test cases in inner classes with JUnit

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问题 I read about Structuring Unit Tests with having a test class per class and an inner class per method. Figured that seemed like a handy way to organize the tests, so I tried it in our Java project. However, the tests in the inner classes doesn't seem to be picked up at all. I did it roughly like this: public class DogTests { public class BarkTests { @Test public void quietBark_IsAtLeastAudible() { } @Test public void loudBark_ScaresAveragePerson() { } } public class EatTests { @Test public

setUp/tearDown (@Before/@After) why we need them in JUnit?

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问题 I believe that we are all know that setUp (@Before) will execute before any test method and tearDown(@After) will execute after test method. Also we know that Junit will create one instance of Test per test method . my question is that can we just move setUp method content to class Constructor and remove setUp method? is there any specific reason to keep setUp method? 回答1: This (old) JUnit best practices article puts it like this: Do not use the test-case constructor to set up a test case

Specifying an order to junit 4 tests at the Method level (not class level)

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问题 I know this is bad practice, but it needs to be done, or I'll need to switch to testng . Is there a way, similar to JUnit 3's testSuite, to specify the order of the tests to be run in a class? 回答1: If you're sure you really want to do this: There may be a better way, but this is all I could come up with... JUnit4 has an annotation: @RunWith which lets you override the default Runner for your tests. In your case you would want to create a special subclass of BlockJunit4ClassRunner , and