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class); classToTest. How do you ensure that a red herring doesn't violate Chekhov's gun? And to "mock" an exception with mockito, use, Mockito alone is not the best solution for handling exceptions, use Mockito with Catch-Exception, 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. Mockito: Trying to spy on method is calling the original method, Difficulties with estimation of epsilon-delta limit proof. Comment . Mutually exclusive execution using std::atomic? Asking for help, clarification, or responding to other answers. It catches it and logs it, but always returns normally. The PowerMockito. Mockito provides following methods that can be used to mock void methods. Why are physically impossible and logically impossible concepts considered separate in terms of probability? Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. How to verify that a specific method was not called using Mockito? For instance, I need to cover the scenario where there are exceptions thrown by cacheWrapper. We will present two approaches: one for methods that returns some value and one for void methods - there are some differences in the implementation. Why do academics stay as adjuncts for years rather than move around? Has this content helped you? We can stub a void method to throw an exception using doThrow (). @pringi Thanks, I see that the question concerned both mocking an exception and catching it. 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! If you're using JUnit 4, you can annotate your test with, to assert that an exception has occured. is there any way we can mock throw exception for void methods? But opting out of some of these cookies may affect your browsing experience. It doesn't return a value, so it throws an exception. WebTry this for stubbing void methods to throw exceptions: EasyMock: // First make the actual call to the void method. doThrow() and doReturn() replaces stubVoid() because of improved readability and consistency with the family of doAnswer() methods. It catches it and logs it, but always returns normally. rev2023.3.3.43278. Mockito provides following methods that can be used to mock void methods. loadProperties(blammy); } @Before public void preTestSetup() { classToTest = new SomeClass(); // initialize the classToTest // variable before each test. } For this, we'll have to mock the method in such a way that it throws these exceptions. : an exception is thrown) then you know something went wrong and you can start digging. Though in this case we can catch exception from the first method call and wrap it in RuntimeException. Short story taking place on a toroidal planet or moon involving flying. Analytical cookies are used to understand how visitors interact with the website. When testing not void methods we could actually decide what approache is better for us, because both will work in the same way: In the following test class, we used the when().thenThrow() statement to configure the not void method to throw a different exception when called with argument zero. Using Junit5, you can assert exception, asserts whether that exception is thrown when testing method is invoked. Because, when() method of mockito works with return value and does not work when method is void. Join them now to gain exclusive access to the latest news in the Java world, as well as insights about Android, Scala, Groovy and other related technologies. WebIf this method fails (e.g. Is the God of a monotheism necessarily omnipotent? You also have the option to opt-out of these cookies. In the next few sections, I will show you different ways of stubbing the void method eat() to change its behavior. doThrow() : We can use doThrow() when we want to stub a void method that throws exception. DevPedrada. Does ZnSO4 + H2 at high pressure reverses to Zn + H2SO4? I can't see this version in Maven Repo yet. Do new devs get fired if they can't solve a certain bug? What video game is Charlie playing in Poker Face S01E07? These cookies will be stored in your browser only with your consent. Linear Algebra - Linear transformation question, Styling contours by colour and by line thickness in QGIS, Identify those arcade games from a 1983 Brazilian music video, Acidity of alcohols and basicity of amines. doThrow (): We can use doThrow () when we want to stub a void method that throws exception. Why does Mister Mxyzptlk need to have a weakness in the comics? How does the command scheduler work in Laravel? Why is printing "B" dramatically slower than printing "#"? 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 How do you assert that a certain exception is thrown in JUnit tests? @JB Nizet I totally agree with you but however if I write doThrow(new Exception()) instead of doThrow(Exception.class), I have the following error when I launch my test ; Expected exception com.company.project.exception.ElementNotFoundException but got org.mockito.exceptions.base.MockitoException: doThrow(new Exception()).when(object).voidMethod(any()); Thanks for posting this here; if the method returns a value : given(mockedObject.methodReturningAnObject()).willThrow(new Exception()); if the method doesn't return anything : willThrow(new Exception()).given(mockedObject).methodReturningVoid()); Explanation form javadoc : "Stubbing voids requires different approach from {@link Mockito#when(Object)} (or BDDMockito.given)because the compiler does not like void methods inside brackets", Mockito test a void method throws an exception, How to make mock to void methods with mockito, docs.mockito.googlecode.com/hg/latest/org/mockito/, How Intuit democratizes AI development across teams through reusability. PowerMockito is a superset (or more of a supplement) that can be used with both these frameworks. 1 Answer Sorted by: 1 Firstly, your method deleteTableEsiti () never throws any exception. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Before I start with my example, a bit about my setup: .lepopup-progress-100 div.lepopup-progress-t1>div{background-color:#e0e0e0;}.lepopup-progress-100 div.lepopup-progress-t1>div>div{background-color:#bd4070;}.lepopup-progress-100 div.lepopup-progress-t1>div>div{color:#ffffff;}.lepopup-progress-100 div.lepopup-progress-t1>label{color:#444444;}.lepopup-form-100, .lepopup-form-100 *, .lepopup-progress-100 {font-size:15px;color:#444444;font-style:normal;text-decoration:none;text-align:left;}.lepopup-form-100 .lepopup-element div.lepopup-input div.lepopup-signature-box span i{font-size:15px;color:#444444;font-style:normal;text-decoration:none;text-align:left;}.lepopup-form-100 .lepopup-element div.lepopup-input div.lepopup-signature-box,.lepopup-form-100 .lepopup-element div.lepopup-input div.lepopup-multiselect,.lepopup-form-100 .lepopup-element div.lepopup-input input[type='text'],.lepopup-form-100 .lepopup-element div.lepopup-input input[type='email'],.lepopup-form-100 .lepopup-element div.lepopup-input input[type='password'],.lepopup-form-100 .lepopup-element div.lepopup-input select,.lepopup-form-100 .lepopup-element div.lepopup-input select option,.lepopup-form-100 .lepopup-element div.lepopup-input textarea{font-size:15px;color:#444444;font-style:normal;text-decoration:none;text-align:left;background-color:rgba(255, 255, 255, 0.7);background-image:none;border-width:1px;border-style:solid;border-color:#cccccc;border-radius:0px;box-shadow:none;}.lepopup-form-100 .lepopup-element div.lepopup-input ::placeholder{color:#444444; opacity: 0.9;} .lepopup-form-100 .lepopup-element div.lepopup-input ::-ms-input-placeholder{color:#444444; opacity: 0.9;}.lepopup-form-100 .lepopup-element div.lepopup-input div.lepopup-multiselect::-webkit-scrollbar-thumb{background-color:#cccccc;}.lepopup-form-100 .lepopup-element div.lepopup-input>i.lepopup-icon-left, .lepopup-form-100 .lepopup-element div.lepopup-input>i.lepopup-icon-right{font-size:20px;color:#444444;border-radius:0px;}.lepopup-form-100 .lepopup-element .lepopup-button,.lepopup-form-100 .lepopup-element .lepopup-button:visited{font-size:17px;font-weight:700;font-style:normal;text-decoration:none;text-align:center;background-color:rgba(203, 169, 82, 1);background-image:linear-gradient(to bottom,rgba(255,255,255,.05) 0,rgba(255,255,255,.05) 50%,rgba(0,0,0,.05) 51%,rgba(0,0,0,.05) 100%);border-width:0px;border-style:solid;border-color:transparent;border-radius:0px;box-shadow:none;}.lepopup-form-100 .lepopup-element div.lepopup-input .lepopup-imageselect+label{border-width:1px;border-style:solid;border-color:#cccccc;border-radius:0px;box-shadow:none;}.lepopup-form-100 .lepopup-element div.lepopup-input .lepopup-imageselect+label span.lepopup-imageselect-label{font-size:15px;color:#444444;font-style:normal;text-decoration:none;text-align:left;}.lepopup-form-100 .lepopup-element div.lepopup-input input[type='checkbox'].lepopup-checkbox-tgl:checked+label:after{background-color:rgba(255, 255, 255, 0.7);}.lepopup-form-100 .lepopup-element div.lepopup-input input[type='checkbox'].lepopup-checkbox-classic+label,.lepopup-form-100 .lepopup-element div.lepopup-input input[type='checkbox'].lepopup-checkbox-fa-check+label,.lepopup-form-100 .lepopup-element div.lepopup-input input[type='checkbox'].lepopup-checkbox-square+label,.lepopup-form-100 .lepopup-element div.lepopup-input input[type='checkbox'].lepopup-checkbox-tgl+label{background-color:rgba(255, 255, 255, 0.7);border-color:#cccccc;color:#444444;}.lepopup-form-100 .lepopup-element div.lepopup-input input[type='checkbox'].lepopup-checkbox-square:checked+label:after{background-color:#444444;}.lepopup-form-100 .lepopup-element div.lepopup-input input[type='checkbox'].lepopup-checkbox-tgl:checked+label,.lepopup-form-100 .lepopup-element div.lepopup-input input[type='checkbox'].lepopup-checkbox-tgl+label:after{background-color:#444444;}.lepopup-form-100 .lepopup-element div.lepopup-input input[type='radio'].lepopup-radio-classic+label,.lepopup-form-100 .lepopup-element div.lepopup-input input[type='radio'].lepopup-radio-fa-check+label,.lepopup-form-100 .lepopup-element div.lepopup-input input[type='radio'].lepopup-radio-dot+label{background-color:rgba(255, 255, 255, 0.7);border-color:#cccccc;color:#444444;}.lepopup-form-100 .lepopup-element div.lepopup-input input[type='radio'].lepopup-radio-dot:checked+label:after{background-color:#444444;}.lepopup-form-100 .lepopup-element div.lepopup-input div.lepopup-multiselect>input[type='checkbox']+label:hover{background-color:#bd4070;color:#ffffff;}.lepopup-form-100 .lepopup-element div.lepopup-input div.lepopup-multiselect>input[type='checkbox']:checked+label{background-color:#a93a65;color:#ffffff;}.lepopup-form-100 .lepopup-element input[type='checkbox'].lepopup-tile+label, .lepopup-form-100 .lepopup-element input[type='radio'].lepopup-tile+label {font-size:15px;color:#444444;font-style:normal;text-decoration:none;text-align:center;background-color:#ffffff;background-image:none;border-width:1px;border-style:solid;border-color:#cccccc;border-radius:0px;box-shadow:none;}.lepopup-form-100 .lepopup-element-error{font-size:15px;color:#ffffff;font-style:normal;text-decoration:none;text-align:left;background-color:#d9534f;background-image:none;}.lepopup-form-100 .lepopup-element-2 {background-color:rgba(226,236,250,1);background-image:none;border-width:1px;border-style:solid;border-color:rgba(216,216,216,1);border-radius:3px;box-shadow: 1px 1px 15px -6px #d7e1eb;}.lepopup-form-100 .lepopup-element-3 * {font-family:'Arial','arial';font-size:26px;color:#333333;font-weight:normal;font-style:normal;text-decoration:none;text-align:center;}.lepopup-form-100 .lepopup-element-3 {font-family:'Arial','arial';font-size:26px;color:#333333;font-weight:normal;font-style:normal;text-decoration:none;text-align:center;background-color:transparent;background-image:none;border-width:1px;border-style:none;border-color:transparent;border-radius:0px;box-shadow:none;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.lepopup-form-100 .lepopup-element-3 .lepopup-element-html-content {min-height:36px;}.lepopup-form-100 .lepopup-element-4 * {font-family:'Arial','arial';font-size:19px;color:#555555;font-weight:normal;font-style:normal;text-decoration:none;text-align:left;}.lepopup-form-100 .lepopup-element-4 {font-family:'Arial','arial';font-size:19px;color:#555555;font-weight:normal;font-style:normal;text-decoration:none;text-align:left;background-color:transparent;background-image:none;border-width:1px;border-style:none;border-color:transparent;border-radius:0px;box-shadow:none;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.lepopup-form-100 .lepopup-element-4 .lepopup-element-html-content {min-height:63px;}.lepopup-form-100 .lepopup-element-5 * {font-family:'Arial','arial';font-size:13px;color:#555555;font-weight:normal;font-style:normal;text-decoration:none;text-align:left;}.lepopup-form-100 .lepopup-element-5 {font-family:'Arial','arial';font-size:13px;color:#555555;font-weight:normal;font-style:normal;text-decoration:none;text-align:left;background-color:transparent;background-image:none;border-width:1px;border-style:none;border-color:transparent;border-radius:0px;box-shadow:none;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.lepopup-form-100 .lepopup-element-5 .lepopup-element-html-content {min-height:60px;}.lepopup-form-100 .lepopup-element-6 * {font-family:'Arial','arial';font-size:13px;color:#333333;font-weight:normal;font-style:normal;text-decoration:none;text-align:left;}.lepopup-form-100 .lepopup-element-6 {font-family:'Arial','arial';font-size:13px;color:#333333;font-weight:normal;font-style:normal;text-decoration:none;text-align:left;background-color:transparent;background-image:none;border-width:1px;border-style:none;border-color:rgba(216,216,216,1);border-radius:0px;box-shadow:none;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.lepopup-form-100 .lepopup-element-6 .lepopup-element-html-content {min-height:auto;}.lepopup-form-100 .lepopup-element-0 * {font-size:15px;color:#ffffff;font-weight:normal;font-style:normal;text-decoration:none;text-align:left;}.lepopup-form-100 .lepopup-element-0 {font-size:15px;color:#ffffff;font-weight:normal;font-style:normal;text-decoration:none;text-align:left;background-color:#5cb85c;background-image:none;border-width:0px;border-style:solid;border-color:#ccc;border-radius:5px;box-shadow: 1px 1px 15px -6px #000000;padding-top:40px;padding-right:40px;padding-bottom:40px;padding-left:40px;}.lepopup-form-100 .lepopup-element-0 .lepopup-element-html-content {min-height:160px;}.