The method Assert.assertThrows provides a nicer way for verifying exceptions. Mockito 2 . Let's see an example of verifying the message property of an exception: In the example above, we're first declaring the ExpectedException rule. Busque trabalhos relacionados a Illegal reflective access by org mockito internal util reflection accessibilitychanger ou contrate no maior mercado de freelancers do mundo com mais de 22 de trabalhos. Find centralized, trusted content and collaborate around the technologies you use most. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. 2. The mysql database server may not be started or shutdown. By clicking Sign up for GitHub, you agree to our terms of service and This article looked at different ways to catch exceptions and verify their content. Also as the expectation is placed around in the method, depending on how the tested code is written then the wrong part of the test code can throw the exception, leading to false-positive test and I'm not sure that PMD, findbugs or Sonar will give hints on such code. Wed like to help. Here's an example of how you might use this in a test case: In this example, we set up a mock object of type MyClass and configure it to throw a RuntimeException when its someMethod method is called. The @Test(expected = ) feature is interesting as you can write less code and then writing this test is supposedly less prone to coding errors. Once you have handled all your usecases for this basic unit of work, you move up a level. Designed by Colorlib. JUnit Assert Exception. If you are sure that this issue is important and should not be marked as stale just ask to put an important label. worked for meAlso we can check the exception message as well.assertThatThrownBy(() -> myService.sumTingWong("badArg")).hasMessage("test") .isInstanceOf(IllegalArgumentException.class); this does not work if the method doSomething() return type is void? when(testingClassObj.testSomeMethod).thenThrow(new CustomException()); Using Junit5, you can assert exception, asserts whether that exception is thrown when testing method is invoked. Why is my Mockito-based unit test unable to run in Eclipse? In JUnit 5, to write the test code that is expected to throw an exception, we should use Assertions.assertThrows (). If the expected exception is thrown, assertThrows returns the exception, which enables us to also assert on the message. In addition, the use of ExpectedException is error-prone when used with other rules like TestWatcher because the order of rules is important in that case. To verify that the exception did happen, assert a false condition within the try block after the statement that throws the exception. Why are non-Western countries siding with China in the UN? Above verify method will pass if add("Pankaj") is called only once on the mocked list object. Premium CPU-Optimized Droplets are now available. Explanation: Mockito is a popular mocking framework used for Java applications. If you use AssertJ or google-truth, see answer. if the method someMethod() return type is void, then it does not work like this. It works for every jest test: post-JDK8 : Use AssertJ or custom lambdas to assert exceptional behaviour. Mockito alone is not the best solution for handling exceptions, use Mockito with Catch-Exception If you want to test the exception message as well you can use JUnit's ExpectedException with Mockito: to assert . Sign up for Infrastructure as a Newsletter. How would I do this in mockito and verify that I get Exception2 after forcing Exception 1 to be thrown? To verify that a mock object throws an exception in Mockito, you can use the verify method and pass it a times argument to specify the number of times the method should have been called, as well as a throwable argument to specify the exception that should have been thrown. Processor processor = Mockito.mock (processor.class); // TODO: Find out what exception is thrown by the verify method and specifically catch that exception. Your code probably calls hideProgressDialog () twice. The context manager will caught an exception and store it in the object in its exception attribute. Mockito How to mock and assert a thrown exception. We will cover how to verify an exception, verify a specific But even though the exception might be thrown in the next test, the exception message contains a navigable stack trace element with location of the defect. How to verify an exception thrown in mockito? If this method fails (e.g. A unit test is almost always written using a unit testing framework. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. We can use JUnit 4 @Test annotation expected attribute to define the expected exception thrown by the test method. How do you assert that a certain exception is thrown in JUnit tests? The try-catch block you have to write the block around the tested behavior and write the assertion in the catch block, that may be fine but many find that this style interrupts the reading flow of a test. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Example using @test (expected) @MariuszS response correctly answers what you are saying is unrelated to Mockito. Assertions assertThrows () API. We can skip any method to verify, but the methods being verified must be invoked in the same order. We can test expected exceptions using JUnit 5 assertThrows assertion. this does not work if the method doSomething() return type is void? . jQuery Ajax error handling, show custom exception messages, Verify object attribute value with mockito. Though in this case we can catch exception from the first method call and wrap it in RuntimeException. How can the mass of an unstable composite particle become complex? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. How i can stop call a method void with mockito? This keeps your testing code well structured and allows you to quickly run through the architecture to find where things go wrong, instead of having to hop all over the place. created by the provided s, A component is an object having a graphical representation that can be displayed I have noticed this question garners interest from time to time so I'll expand a little. The ExpectedException rule is also an attempt to fix the previous caveats, but it feels a bit awkward to use as it uses an expectation style, EasyMock users know very well this style. >. A rapid example taken from the home page : As you can see the code is really straightforward, you catch the exception on a specific line, the then API is an alias that will use AssertJ APIs (similar to using assertThat(ex).hasNoCause()). How to throw an exception in Java Mockito? Launching the CI/CD and R Collectives and community editing features for How do you assert that a certain exception is thrown in JUnit tests? Place any code statements that might raise or throw an exception in a try block, and place statements used to handle the exception or exceptions in one or more catch blocks below the try block. By using "expected" parameter, you can specify the exception name our test may throw. Even the expected exception is placed before the test statement, it breaks your reading flow if the tests follow BDD or AAA. In the following And even if it was based on Mockito 2 in the current version, this would require to declare a global mock maker (inline-mock-maker), something that may not what you want, as this mock maker has different drawbacks that the regular mock maker. 2023 DigitalOcean, LLC. Is email scraping still a thing for spammers. cases that verify no exception is thrown. What has meta-philosophy to say about the (presumably) philosophical work of non professional philosophers? In above example, you are using " IllegalArgumentException" which will be thrown by the test if a developer uses an argument which is not permitted. Mockito How to mock and assert a thrown exception? But really the assertion API is still a bit poor, there's nothing outside assertThrows. Mockito + Catch-Exception + Assertj full sample, eu.codearte.catch-exception:catch-exception:2.0, http://blog.codeleak.pl/2015/04/junit-testing-exceptions-with-java-8.html, static.javadoc.io/org.mockito/mockito-core/2.23.4/org/mockito/. Is variance swap long volatility of volatility? Check out our offerings for compute, storage, networking, and managed databases. As always, the full source code can be found over on GitHub. DigitalOcean makes it simple to launch in the cloud and scale up as you grow whether youre running one virtual machine or ten thousand. ordering of its keys, "This should only appear in the logs. We can use Mockito verify methods at the end of the testing method code to make sure that specified methods are called. Mockito verify() method can be used to test number of method invocations too. Currently, this library has two shortcomings : At the time of this writing, it is noteworthy to say this library is based on Mockito 1.x as it creates a mock of the tested object behind the scene. This is useful when we have to perform additional checks on the exception raised. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. How do I test a class that has private methods, fields or inner classes? thenThrow (new MyException () ); The method takes two parameters: the type of Finally, we use the verify method to check that the someMethod method was called exactly once, and we check the type of the exception to make sure it is a RuntimeException. One should not test to show that the program works rather that it does not work. Also, you need to write an Assert.fail at the end of the try block. You are trying to tell Mockito to throw an exception SomeException () that is not valid to be thrown by that particular method call. I wonder though if this depends on any behaviour of the code under test. In this example there is a basic method called getUserById() which will return a user and there is a total of 3 unit of works. All Rights Reserved. Mockito.when(myService.doSomething()).thenThrow(new Exception("Cannot process")); then we will have following runtime exception: org.mockito.exceptions.base.MockitoException: Checked exception is invalid for this method! And you can use any assertion library like Hamcrest or AssertJ. If we change the test above to expect a RuntimeException, this will also pass: The assertThrows() method enables more fine-grained control for exception assertion logic because we can use it around specific parts of the code. Can I test for multiple thrown exceptions in one test method? And you need to test to test that it does throw exception during the second method call, not the first one. Solution 2 - MySql run out of connections doSomething () ). While we believe that this content benefits our community, we have not yet thoroughly reviewed it. Why does awk -F work for most letters, but not for the letter "t"? Starting or restarting the mysql database will resolve the exception "com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure". The first unit of work should test whether or not a valid user is being returned in the case of valid and invalid input.Any exceptions that are being thrown by the datasource have to be handled here: if no user is present there should be a test that demonstrates that an exception is thrown when the user can't be found. Why is there a memory leak in this C++ program and how to solve it, given the constraints? shouldReturnErrorResponseWhenFailedToUploadFile(), TransactionToApply newTransactionThatFailsWith( Exception error ), when( transaction.additionalHeader() ).thenReturn(, // allow to build validated index updates but fail on actual tx application, txId = ThreadLocalRandom.current().nextLong(, shouldWrapIOExceptionsCarefullyBecauseCriticalInformationIsOftenEncodedInTheirNameButMissingFromTheirMessage(), "unable to load database: FileSystemException: the-message". By adding another test (nonExistingUserById_ShouldThrow_IllegalArgumentException) that uses the faulty input and expects an exception you can see whether your method does what it is supposed to do with wrong input. If no exception is thrown, your tests will all turn up green. Post navigation Already on GitHub? Allows verifying exact number of invocations. To learn more, see our tips on writing great answers. There are 2 types of input: valid input and faulty input (the input is valid in the strict sense, but it's not correct). Here is a simple example showing how to assert exception in JUnit 5. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. You can also see what methods are called, so why use verify? However, if you want to be explicit, you can do: You can always use the .not method, which will be valid if your initial condition is false. verify (mock).someMethod (anyInt (), anyString (), eq ("third argument") ); //above is correct - eq () is also an argument matcher verify (mock).someMethod (anyInt (), anyString (), "third argument" ); //above is incorrect - exception will be thrown because third argument is given without argument matcher. if the method someMethod() return type is void, then it does not work like this. Author rev2023.3.1.43269. Wed like to help. ArtifactPluginInfoBuilder(extension).pluginInfoFor(descriptor); Parsing JSON documents to java classes using gson. Or, as defined in The art of Unit Testing, 2nd Edition by Roy Osherove, page 11: A unit test is an automated piece of code that invokes the unit of work being tested, and then checks some assumptions about a single end result of that unit. A sample of this could be the IllegalArgumentException which is caught with the @Test(expected = IllegalArgumentException.class) annotation. when (myMock. This issue has been automatically marked as stale because it has not had recent activity. The open-source game engine youve been waiting for: Godot (Ep. Signal is not recognized as being declared in the current scope in Godot 3.5. You can use this It can be written easily and runs quickly. Mockito: Trying to spy on method is calling the original method. Why is there a memory leak in this C++ program and how to solve it, given the constraints? from the file system (, A map that has its keys ordered. Thanks for learning with the DigitalOcean Community. And to "mock" an exception with mockito, use, Updated answer for 06/19/2015 (if you're using java 8), Using assertj-core-3.0.0 + Java 8 Lambdas, Reference: http://blog.codeleak.pl/2015/04/junit-testing-exceptions-with-java-8.html. If the method throws any other exception, the test will fail. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. If any method call is deleted by mistake, then verify method will throw an error. mywebforum.com, Get Your Own While we believe that this content benefits our community, we have not yet thoroughly reviewed it. Just test your functionality: if an exception is thrown the test will automatically fail. Verify Method called throws Null Pointer exception. Working on improving health and education, reducing inequality, and spurring economic growth? Thats all for a quick roundup on testing expected exceptions in JUnit 5 and JUnit 4. Mockito + Catch-Exception + Assertj full sample, eu.codearte.catch-exception:catch-exception:2.0, http://blog.codeleak.pl/2015/04/junit-testing-exceptions-with-java-8.html, static.javadoc.io/org.mockito/mockito-core/2.23.4/org/mockito/, The open-source game engine youve been waiting for: Godot (Ep. The canonical reference for building a production grade API with Spring, THE unique Spring Security education if youre working with Java today, Focus on the new OAuth2 stack in Spring Security 5, From no experience to actually building stuff, The full guide to persistence with Spring Data JPA, The guides on building REST APIs with Spring. Here is a simple example showing how to assert exception in JUnit 5. Its the same as calling with times(1) argument with verify method. How to verify that a specific method was not called using Mockito? If you want to test the exception message as well you can use JUnit's ExpectedException with Mockito: If you're using JUnit 4, and Mockito 1.10.x Therefore testing is done with the intent of finding errors. If you have any suggestions for improvements, please let us know by clicking the report an issue button at the bottom of the tutorial. If it throws MyException during the first method call (in the preparation stage) then it should fail the test. happen. As the description of the project says, it let a coder write in a fluent line of code catching the exception and offer this exception for the latter assertion. Lets see how we can test exception as well as its message. Was Galileo expecting to see so many stars? anyString(), "third argument"); //above is incorrect - exception will be thrown because third argument is given without an argument matcher. We write a unittest that fails if no exception is raised by a function or when an exception raised by assert statement is different from expected exception. Mockito verify () methods can be used to make sure the mock object methods are being called. You can verify the type of the parameter being passed in several different ways: verify { ErrorReportManager.logHandledException(ofType(JSONException::class)) } verify { ErrorReportManager.logHandledException(match { it is JSONException }) } In the following example, we catch the exception the Car class throws and verify the message inside the exception is what we We then call the someMethod method and catch the exception that is thrown. Catch an exception with assertThrows JUnit5 includes an Assertion that you can use to verify thrown exceptions. If you're using JUnit 4, you can annotate your test with, to assert that an exception has occured. voids requires diff, Same as #doReturn(Object) but sets consecutive values to be returned. It's consistent in its results as long as production code hasn't changed. expect-run-verify Mockito . You get paid; we donate to tech nonprofits. Questions & Answers platform. @pringi Thanks, I see that the question concerned both mocking an exception and catching it. Thanks for learning with the DigitalOcean Community. Testing is a costly activity. If we want to make sure a method is called but we dont care about the argument, then we can use ArgumentMatchers with verify method. explicitly verify an exception is not thrown. If there are no other assertions in the test method, you'll also have to do $this->expectNotToPerformAssertions(); or you'll get a warning that the test doesn't perform any assertions. Though in this case we can catch exception from the first method call and wrap it in RuntimeException. Below is a complete example showing how to test exception as well as exception message. *; // Create a mock Foo mock = mock (Foo.class); // Set up the mock to throw an exception when the foo () method . (Java.Util.Logging), How to Set Auto-Scrolling of Jtextarea in Java Gui, How to Draw in JPAnel? You can explore MongoDB through their free forever cluster - Atlas. Mockito - Verifying Behavior Previous Page Next Page Mockito can ensure whether a mock method is being called with reequired arguments or not. Why Is PNG file with Drop Shadow in Flutter Web App Grainy? Mockito - Verifying Method Calls @Captor Annotation in Mockito with Example Adding behavior to mocked object in Mockito Mocking Void Methods with Mockito Mockito's mock Overloaded Methods That's all about Mocking Exception Throwing using Mockito If you have any feedback or suggestion please feel free to drop in below comment box. I am a passionate Java developer with years of experience, and a love for sharing my knowledge through talks and my personal blog. Well occasionally send you account related emails. After executing the program it is showing that initialization failure. How to troubleshoot crashes detected by Google Play Store for Flutter app, Cupertino DateTime picker interfering with scroll behaviour. In this example, we set up a mock object of type MyClass and configure . This takes the type of the expected exception and an Executable functional interface where we can pass the code under test through a lambda expression: If the expected exception is thrown, assertThrowsreturns the exception, which enables us to also assert on the message. //stubbing using . EDIT: It seems the project is brewing a Java 8 Lambdas support. Annotate your test method with: I'm using mockito in a junit test. It is possible to write yourself a do it yourself try-catch block or use the JUnit tools (@Test(expected = ) or the @Rule ExpectedException JUnit rule feature). We can use it to verify for the invocation count. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. verify(mock, times(2)).someMethod("some arg"); Creates a spy of the real object. 1.1. We will, of course, make sure to cover both the JUnit 4 and JUnit 5 versions. It will fail the test if there are any unverified interactions on the mocked object. An easy and short way that worked for me was: Or if your exception is thrown from the constructor of a class: Unrelated to mockito, one can catch the exception and assert its properties. How do you make an exception happen and then assert that it has (generic pseudo-code), To answer your second question first. // Call the method and catch the exception. To verify that the exception did happen, assert a false condition within the try block after the statement that throws the exception. The test won't fail if a subtype of the exception is thrown. Mockito : how to verify method was called on an object created within a method? Catch a specific exception with assertThrowsExactly, Verifying a specific exception is not thrown with assertDoesNotThrow, Using assertAll to verify multiple Executables, Setting the order of Tests in JUnit5 and JUnit4, Mock final classes and methods with Mockito, Verify thrown exceptions inside tests with Junit5. Connect and share knowledge within a single location that is structured and easy to search. The original answer for JUnit <= 4.12 was: Though answer has more options for JUnit <= 4.12. If the test needs to check additional things on the exception like the cause or the message (good exception messages are really important, having a precise exception type may not be enough). is there a chinese version of ex. Mockito Verify methods are used to check that certain behavior happened. The context manager will caught an exception is thrown, your tests will all up! ) argument with verify method will pass if add ( `` Pankaj '' ) is called only once on exception! Once you have handled all your usecases for this basic unit of work, you can this..., copy and paste this URL into your RSS reader, a that! Deleted by mistake, then it does throw exception during the second method call, not the method. Of an unstable composite particle become complex checks on the exception, which enables us to also assert the! Called, so why use verify in JUnit 5 mass of an composite... Your tests will all turn up green the preparation stage ) then it does not work like.. Unstable composite particle become complex failure & quot ; expected & quot ; com.mysql.cj.jdbc.exceptions.CommunicationsException Communications. Believe that this issue is important and should not be marked as because. Method void with mockito has ( generic pseudo-code ), to answer your second question first and... And catching it compute, storage, networking, and managed databases useful we... Solution 2 - mysql run out of connections doSomething ( ) return is..., there 's nothing outside assertThrows has been automatically marked as stale just ask to an! Really the assertion API is still a bit poor, there 's nothing outside assertThrows meta-philosophy to about. And store it in RuntimeException, but the methods being verified must be invoked in the same as calling times. The statement that throws the exception, the full source code can be written easily and runs quickly code make! The program it is showing that initialization failure, storage, networking, and a love for my. Interactions on the mocked list object jquery Ajax error handling, show custom exception messages verify. Exception & quot ; parameter, you move up a level, given the constraints for! To mockito times ( 2 ) ).someMethod ( `` Pankaj '' ) ; Parsing JSON documents Java. On testing expected exceptions in JUnit tests: if an exception happen and then assert that a specific was!, your tests will all turn up green 's consistent in its results as long as production code has changed. 4, you can specify the exception did happen, assert a thrown exception is there a memory leak this. We will, of course, make sure that this issue has been marked! Junit < = 4.12 see how we can test expected exceptions in one test method with: 'm. Important and should not be marked as stale because it has ( generic )... Enables us to also assert on the mocked list object is unrelated to mockito has ( generic pseudo-code ) how... The mysql database will resolve the exception did happen, assert a thrown exception the cloud and scale up you... Of an unstable composite particle become complex use JUnit 4, you need test! Mongodb through their free forever cluster - Atlas the mysql database server not! An object created within a method has private methods, fields or inner classes for a free GitHub to. Messages, verify object attribute value with mockito or AssertJ within a single location that is expected to an! Mysql run out of connections doSomething ( ) methods can be used to test number of invocations! For the letter `` t '' ) methods can be used to check that certain Behavior happened be or! + Catch-Exception + AssertJ mockito verify exception thrown sample, eu.codearte.catch-exception: catch-exception:2.0, http: //blog.codeleak.pl/2015/04/junit-testing-exceptions-with-java-8.html, static.javadoc.io/org.mockito/mockito-core/2.23.4/org/mockito/ test functionality... Call a method wrap it in RuntimeException 2023 Stack Exchange Inc ; user contributions under. Full source code can be used to check that certain Behavior happened the preparation stage ) then does.: catch-exception:2.0, http: //blog.codeleak.pl/2015/04/junit-testing-exceptions-with-java-8.html, static.javadoc.io/org.mockito/mockito-core/2.23.4/org/mockito/ Drop Shadow in Flutter Web App Grainy ( ). 4.12 was: though answer has more options for JUnit < = 4.12 your question... To run in Eclipse, trusted content and collaborate around the technologies you use AssertJ or custom lambdas assert! Always written using a unit test unable to run in Eclipse I get Exception2 after forcing 1. The letter `` t '' catch an exception has occured you are saying is to! Written using a unit test is almost always written using mockito verify exception thrown unit test is almost always written using unit... It breaks your reading flow if the tests follow BDD or AAA once you have all... The logs editing features for how do you make an exception is thrown the test n't. Answer for JUnit < = 4.12 through talks and my personal blog, I see that the exception did,! And then assert that an exception has occured CI/CD and R Collectives community! For Java applications ( expected = IllegalArgumentException.class ) annotation Page Next Page can... Called on an object created within a single location that is expected to throw an error exception well... Name our test may throw call, not the first method call wrap! Engine youve been waiting for: Godot ( Ep 's consistent in its exception.... Exchange Inc ; user contributions licensed under CC BY-SA eu.codearte.catch-exception: catch-exception:2.0, http: //blog.codeleak.pl/2015/04/junit-testing-exceptions-with-java-8.html static.javadoc.io/org.mockito/mockito-core/2.23.4/org/mockito/... Believe that this issue is important and should not be marked as stale just ask to an! Perform additional checks on the message if no exception is thrown the test will fail terms of service privacy... Particle become complex solve it, given the constraints work if the method doSomething ( ) return is! And collaborate around the technologies you use AssertJ or custom lambdas to exception. How do you assert that a certain exception is thrown also see what methods are called, so why verify... Framework used for Java applications our tips on writing great answers, it. Auto-Scrolling of Jtextarea in Java Gui, how to verify, but not the. We Set up a level invocations too not called using mockito single location that is structured and easy to.. And a love for sharing my knowledge through talks and my personal blog mockito verify ( ) that the... Source code can be used to test exception as well as exception message method doSomething )! Siding with China in the current scope in Godot 3.5 after the statement that throws the exception the program is. The second method call is deleted by mistake, then verify method will an! ) ; Creates a spy of the exception tests will all turn up green show that the program is. Lets see how we can skip any method to verify for the invocation count in one method. Is useful when we have not yet thoroughly reviewed it compute,,! Be marked as stale because it has ( generic pseudo-code ), to assert exception in JUnit tests Ajax. To assert that an exception happen and then assert that a certain exception is the. At the end of the try block behaviour of the testing method code to make sure the mock object are... Second question first as calling with times ( 1 ) argument with verify method will throw an exception store! This basic unit of work, you agree to our terms of service, privacy and! A unit testing framework to answer your second question first it has had. Extension ).pluginInfoFor ( descriptor ) ; Parsing JSON documents to Java classes using gson as well its. Test wo n't fail if a subtype of the code under test with years of experience, and databases. Exception message exception message donate to tech nonprofits mysql database will resolve the exception thrown! Executing the program it is showing that initialization failure ask to put an important label ; &! With verify method would I do this in mockito and verify that get. Multiple thrown exceptions @ pringi Thanks, I see that the exception did happen assert... Failure & quot ; are called void, then it should fail the test that. Includes an assertion that you can specify the exception name our test may throw use to that! Site design / logo 2023 Stack Exchange Inc ; user contributions licensed CC... Education, reducing inequality, and managed databases do this in mockito and verify a! Way for verifying exceptions method was called on an object created within a method < = 4.12 was though. From the file system (, a map that has its keys, `` this should only appear the... Youve been waiting for: Godot ( Ep why use verify, we should use Assertions.assertThrows ( methods! Can annotate your test method failure & quot ; expected & quot ; Play store for Flutter App Cupertino! Somemethod ( ) method can be used to test exception as well as message. Particle become complex MyException during the second method call and wrap it in RuntimeException how to and... Or custom lambdas to assert exception in JUnit 5, to write the test that. China in the object in its exception attribute if there are any unverified interactions the... Move up a mock object of type MyClass and configure work if the expected is... Assertion library like Hamcrest or AssertJ within a single location that is expected to an! Over on GitHub why are non-Western countries siding with China in the logs (.... Mywebforum.Com, get your Own while we believe that this issue has been marked. The community a simple example showing how to assert exception in JUnit tests the try block after the that! Exception from the file system (, a map that has its keys ordered example showing how assert. Original answer for JUnit < = 4.12 DateTime picker interfering with scroll behaviour void with mockito to troubleshoot crashes by! Thanks, I see that the exception checks on the mocked object testing expected exceptions using JUnit,...