mockito doanswer nullpointerexception

13 jun mockito doanswer nullpointerexception

generics - mockito 2에서 "doAnswer"를 사용할 때 getArgument ()가 암시 적으로 캐스트되지 않는 이유는 무엇입니까? Eclipse as the IDE, version Luna 4.4.1. The default return value of methods you haven't stubbed yet is false for boolean methods, an empty collection or map for methods returning collec... doThrow (): We can use doThrow () when we want to stub a void method that throws exception. Questions: I am facing this errors to run the default program of android studio. The specification itself has evolved out of RxJava 1.x and provides a common baseline for reactive systems and libraries. ClassCastException in Mockito. In simple terms, it validates the certain behavior that happened once in a test. Mockito - NullpointerException जब स्टबिंग विधि ... java testing junit mockito stubbing. We use it to add mock objects to the Spring application context. methodName (); or if you want to combine it with follow-up behavior, Mockito. モックインスタンスを作る ・①mock(Class) モックインスタンスを取得する。 Hoge h = Mockito.mock(Hoge.class); // って感じで使う。 h.getMessage(); // 作ったばかりだとメソッドを呼んでも何も起きない。 Au lieu de cela, j'ai changé en @RunWith (MockitoJUnitRunner.class), cela fonctionne bien. ; Captor to create an ArgumentCaptor instance. The mock will replace any existing … doAnswer, mockito, void method Void methods on mocks do nothing by default. Merge pull request mockito#295 from nhaarman/kotlin-1.3. Mockito 2.0 以後ではデフォルトが ReturnsEmptyValues から ReturnsSmartNulls に変更されており、NullPointerException が発生するようになった原因を教えてくれるようになります。 Mockito 2.0 でそうなるのであれば先取りしたいところですね。 Mockito matchers can cause NullPointerException when overriding Answers or when using (Integer) any() etc. Mockito-Java8 is a set of Mockito add-ons leveraging Java 8 and lambda expressions to make mocking with Mockito even … Mockito Answers. Se dice que cuando uso la opción when () … thenReturn () puedo simular servicios, sin simularlos. doThrow (new Exception ()). Mockito and TextUtils. So we can mock it like this: Using these predefined methods makes testing very easy. Questo funziona perché il metodo toString() è già sovradimensionato nella AbstractMap class che viene estesa dalla HashMap Class Ulteriori informazioni dalla documentazione The most popular mocking framework for Java, now in Scala!! neworld pushed a commit to neworld/mockito that referenced this issue on Aug 31, 2019. Here we've added an exception clause to a mock object. when (Util.getApplicationVersion (isA (Context.class))).thenReturn ("spied! Vanaf Mockito kun je een mock-object maken door @Mock of Mockito.mock (Context.class); te gebruiken, Ik heb NullpointerException ontvangen vanwege het gebruik van @RunWith (PowerMockRunner.class), in plaats van dat ik naar @RunWith (MockitoJUnitRunner.class) ben … Annotations @Mock creates and injects mocked instances. Here's a sample test that demos the problem: Mockito – NullpointerException al apalear Método. Mockito verify() method. //Using Answer to set an id to the customer which is passed in as a parameter to the mock method. doAnswer: If we want our mocked void method to do something (mock the behavior despite being void). doThrow: Then there is Mockito.doThrow () if you want to throw an exception from the mocked void method. Así que empecé a escribir pruebas para nuestro proyecto Java-Spring. We use it to add mock objects to the Spring application context. I managed to distil the problem into a test project. @InjectMocks De acordo com Mockito, você pode criar um objeto falso usando @Mock ou Mockito.mock (Context.class); , Eu tenho NullpointerException por causa de usar @RunWith (PowerMockRunner.class), em vez disso eu mudei para @RunWith (MockitoJUnitRunner.class) funciona bem Stubbing can be overridden: for example common stubbing can go to fixture setup but the test methods can override it. But if we have to spy our objects in order to mock just a part of it, we may also have to mock the void methods. This also verifies that the prepared statement was correctly constructed. У Mockito ви можете створити макет об'єкта за допомогою @Mock або Mockito.mock (Context.class); , Я отримав NullpointerException через використання @RunWith (PowerMockRunner.class), замість того, щоб я змінювався на @RunWith (MockitoJUnitRunner.class). Below are my setup details: I am using Maven – the build tool. Mocking and stubbing are the cornerstones of having quick and simple unit tests. Void methods can be used with Mockito’s doNothing (), doThrow (), and doAnswer () methods, making mocking and verifying intuitive: @Test public void whenAddCalledVerified() { MyList myList = mock (MyList.class); doNothing ().when (myList).add (isA (Integer.class), isA (String.class)); myList.add ( 0, "" ); verify (myList, times ( 1 )).add ( 0, "" ); } @Spy spy the behavious (in order to verify them). We use it to add mock objects to the Spring application context. when (instance). In this post, I’m … NullPointerException in Mockito when mocking method with primitive argument. standard out when running the tests. Mockito 2.0 以後ではデフォルトが ReturnsEmptyValues から ReturnsSmartNulls に変更されており、NullPointerException が発生するようになった原因を教えてくれるようになります。 Mockito 2.0 でそうなるのであれば先取りしたいところですね。 I've spent the last little while pulling out my hair trying to find the problem in my test, and eventually figured out it has to do with mocking a method that takes primitive arguments. The solution is to use Answer, an interface provided by Mockito, which allows test programmers to change the behavior of mocked methods, like changing types of return values. 14.The method used for this is thenThrow(..) of class org.mockito.Mockito. De acordo com Mockito, você pode criar um objeto falso usando @Mock ou Mockito.mock (Context.class); , Eu tenho NullpointerException por causa de usar @RunWith (PowerMockRunner.class), em vez disso eu mudei para @RunWith (MockitoJUnitRunner.class) funciona … But definitely, NullPointerException happened because you want something which is not there. Check if you are returning something. 2. Specify Mockito running class Don’t forget to annotate your Testing class with @RunWith (MockitoJUnitRunner.class). Most of the people just forget to specify the test runner, running class for mocking. class, RETURNS_MOCKS); Every method on the mocked object will return another mock. I had this issue and my problem was that I was calling my method with any() instead of anyInt() . So I had: doAnswer(...).with(myMockObject).th... This article is a shortlist of the three most common reasons why this might be happening. তাই আমি আমাদের জাভা-স্প্রিং-প্রজেক্টের জন্য পরীক্ষা লিখতে শুরু করি। আমি কি জুনিট এবং মকিতো ব্যবহার করি। বলা হয়, যখন আমি কখন() @RunWith (PowerMockRunner.class) kullandığım için NullpointerException aldım, bunun yerine @RunWith (MockitoJUnitRunner.class) olarak değiştirdim In you're example when (myService.getListWithData (inputData).get ()) will cause a NullPointerException because myService.getListWithData (inputData) is null - it has not been stubbed before. I realize that my dataSource is null here and hence the exception but not sure how to fix this problem. Mockito for Scala language. Though you set currentAlphabet whenever next is called, you don't set anything until then. PowerMockito.spy (StaticClass) still causes real method invocation. Note that @ InjectMocks can only be used in combination with the @ Spy annotation, it means that Mockito will inject mocks in a partial mock under testing. У Mockito ви можете створити макет об'єкта за допомогою @Mock або Mockito.mock (Context.class); , Я отримав NullpointerException через використання @RunWith (PowerMockRunner.class), замість того, щоб я змінювався на @RunWith (MockitoJUnitRunner.class). Mockito doAnswer() Mockito not mocking. Mockito 是美味的 Java 单元测试 Mock 框架，开源。 大多 Java Mock 库如 EasyMock 或 JMock 都是 expect-run-verify （期望-运行-验证）方式，而 Mockito 则使用更简单，更直观的方法：在执行后的互动中提问。使用 Mockito，你可以验证任何你想要的。 要让一个普通类变成一个单元测试类：. GPG key ID: 4AEE18F83AFDEB23 Learn about signing commits. by Hongfei Ding, Software Engineer, Shanghai Mockito is a popular open source Java testing framework that allows the creation of mock objects. @InjectMocks to inject mock fields into the tested object automatically. In the example below, the mock object is stubbed to throw NullPointerException when the method get(..) is called on it in line no. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. ট্যাগ্স java, testing, junit, mockito, stubbing. Following is an example of how to use it (not an ideal usecase but just wanted to illustrate the basic usage). Mockito matchers are beholden to weird rules, such as only requiring the use of Mockito matchers for all arguments if one argument in a given method uses a matcher. Java at least 8, Maven 3.6.3, Gradle 6.5.1, Junit 4.11, PowerMock 1.5.6 I am going to show you when to use doNothing() method. Mockito – NullpointerException al apalear Método. sysout se expande a: System.out.println ($ {word_selection}$ {});$ {cursor} Puede activar esto escribiendo sysout seguido de CTRL+SPACE. doAnswer: If we want our mocked void method to do something (mock the behavior despite being void). 2.在测试方法上加上@Test注解。. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. In this article, we will look into some of the stubbing examples using answer callback. This commit was created on GitHub.com and signed with a verified signature using GitHub’s key. − Test the MathApplication class. Mockito-ga ko'ra, @Mock yoki Mockito.mock (Context.class); dan foydalanib, soxta ob'ektni yaratishingiz mumkin; Buning o'rniga @RunWith (PowerMockRunner.class) ni ishlatish sababli NullpointerException ni … Mockito matchers can cause NullPointerException when overriding Answers or when using (Integer) any() etc. If your code uses the object returned by an unstubbed call you get a NullPointerException. In the above code, thenReturn() is mostly used with the when() method. Annotations @Mock creates and injects mocked instances. January 24, 2019. But sometimes, the “magic” behind Mockito’s implementation rears its ugly head and creates bugs that are hard to understand. PowerMock is a framework that extends other mock libraries such as EasyMock with more powerful capabilities. By default, for all methods that return a value, a mock will return either null, a a primitive/primitive wrapper value, or an empty collection, as appropriate. Así que empecé a escribir pruebas para nuestro proyecto Java-Spring. For example 0 for an int/Integer and false for a boolean/Boolean. The best practice of starting any project proceeds with the modelling of the various aspect of the project. Mockito and Mockito.any(Map.class) Mockito TooManyActualInvocations. Vanaf Mockito kun je een mock-object maken door @Mock of Mockito.mock (Context.class); te gebruiken, Ik heb NullpointerException ontvangen vanwege het gebruik van @RunWith (PowerMockRunner.class), in plaats van dat ik naar @RunWith (MockitoJUnitRunner.class) ben … If your code uses the object returned by an unstubbed call you get a NullPointerException. The verify() method is used to check whether some specified methods are called or not. Mockito'ya göre, @Mock veya Mockito.mock (Context.class); tuşlarını kullanarak sahte nesne oluşturabilirsiniz. @Spy spy the behavious (in order to verify them). I am going to use PowerMock API to test Java classes. The following examples show how to use org.mockito.stubbing.Answer.These examples are extracted from open source projects. doThrow - Then there is Mockito.doThrow() if you want to throw an exception from the mocked void method. But sometimes, the “magic” behind Mockito’s implementation rears its ugly head and creates bugs that are hard to understand. methodName (); or if you want to combine it with follow-up behavior, Mockito. For me the reason I was getting NPE is that I was using Mockito.any() when mocking primitives. I found that by switching to using the correct var... After the test, you can query the mock to see what specific methods were called or check the side effects in the form of changed state. Mockito provides the capability to a mock to throw exceptions, so exception handling can be tested. Take a look at the following code snippet. Here we've added an exception clause to a mock object. MathApplication makes use of calcService using its add method and the mock throws a RuntimeException whenever calcService.add () method is invoked. In Mockito 2.1.0 and up with Java 8 you can pass the lambda to argThat out of the box so that one does not need a custom argument matchers. In turn this leads to a NullÜointerException if your method isAuthenticationChannelUsagePossibleOnDevice accesses any member variable of authenticationChannel1 since Mockito initializes them with null. So your method isAuthenticationChannelUsagePossibleOnDevice is executed first and Mockito replaces the result before it is passed to your Code under Test. Make sure you initialize your mocks. JUnit4 use @Before @Before This commit was created on GitHub.com and signed with a verified signature using GitHub’s key. you need to initialize MockitoAnnotations.initMocks(this) method has to called to initialize annotated fields. @Before public void initMocks() {... Se dice que cuando uso la opción when () … thenReturn () puedo simular servicios, sin simularlos. So... It equals to Mockito.mock. In you're example when (myService.getListWithData (inputData).get ()) will cause a NullPointerException because myService.getListWithData (inputData) is null - it has not been stubbed before. Return something for your Mock. So your method isAuthenticationChannelUsagePossibleOnDevice is executed first and Mockito replaces the result before it is passed to your Code under Test. p.ej. It equals to Mockito.mock. Mockitoによれば、 @MockまたはMockito.mock（Context.class）; を使ってモックオブジェクトを作成できます。 @ RunWith（MockitoJUnitRunner.class）に変更した代わりに@RunWith（PowerMockRunner.class）を使用しているため、NullpointerExceptionが発生しました。 This also verifies that the prepared statement was correctly constructed. Mockito provides following methods that can be used to mock void methods. @RunWith(MockitoJUnitRunner.class) //(OR) PowerMockRunner.class It is used at the bottom of the testing code to assure that the defined methods are called. Verified. Mockito mocked object is null. The original run time of the tests from a cleaned state is approximately 25 seconds. doThrow (new Exception ()). At the time that ruleSetup is called, currentAlphabet is null, so Mockito stubs null for every call to innerMethod. "); which returns NULL for every method since it's a mock. Puede crear varias plantillas de código Java en Eclipse a través de. In the example below, the mock object is stubbed to throw NullPointerException when the method get(..) is called on it in line no. Though you set currentAlphabet whenever next is called, you don't set anything until then. com/hg/org/mockito/Matchers. Annotations @Mock creates and injects mocked instances. Mockito doAnswer() Mockito not mocking. Real spies should be used carefully and occasionally, for example when dealing with legacy code. Mockito library enables mocks creation, verification and stubbing. Mockito is an open source mock unit testing framework for Java. Mockito Scala. Mockito matchers are beholden to weird rules, such as only requiring the use of Mockito matchers for all arguments if one argument in a given method uses a matcher. This implementation of Answer returns SmartNull instead of null. @InjectMocks to inject mock fields into the tested object automatically. Mockitoによれば、 @MockまたはMockito.mock（Context.class）; を使ってモックオブジェクトを作成できます。 @ RunWith（MockitoJUnitRunner.class）に変更した代わりに@RunWith（PowerMockRunner.class）を使用しているため、NullpointerExceptionが発生しました。 I am using Spring Boot and Spring Data JPA to build the application. ClassCastException in Mockito. @MockBean uses in Spring Boot. doAnswer - If we want our mocked void method to do something (mock the behavior despite being void). >(); //empty System.out.println(HM); //prints key value pairs enclosed in {}. Mocks are useful if you have a dependency on an external system, file reading takes too long, the database connection is unreliable, or if you don’t want to send an email after every test. If we need to throws exception when a method whose return type is void is … ! Mockito library enables mocks creation, verification and stubbing. While running Mockito unit test for my controller I am getting the following Exception. The mock will replace any existing … In Mockito, the most common way to create a mock object is to use either @Mock annotation or Mockito.mock method. In this article, we will look into some of the stubbing examples using answer callback. Below are my setup details: I am using Maven – the build tool. The following is an example of how to use it. Mocks are useful if you have a dependency on an external system, file reading takes too long, the database connection is unreliable, or if you don’t want to send an email after every test. @Mock private ConnectionInfo connectionInfo; @Before public void setUp() { … For example 0 for an int/Integer and false for a boolean/Boolean. You probably … The following examples show how to use org.reactivestreams.Subscriber.These examples are extracted from open source projects. Methods of Mockito. Mockito matchers are beholden to weird rules, such as only requiring the use of Mockito matchers for all arguments if one argument in a given method uses a matcher. In turn this leads to a NullÜointerException if your method isAuthenticationChannelUsagePossibleOnDevice accesses any member variable of authenticationChannel1 since Mockito initializes them with null. . Mockito#doThrow(Throwable) Mockito#doAnswer(Answer) Mockito#doNothing() Mockito#doReturn(Object) 13. Prerequisites. Let's test the MathApplication class, by injecting in it a mock of … Questions: I am facing this errors to run the default program of android studio. The complete test project is on GitHub. when (instance). Spying on real objects You can create spies of real objects. Mockito - NullpointerException जब स्टबिंग विधि ... java testing junit mockito stubbing. ; Captor to create an ArgumentCaptor instance. Ventana> Preferencias> Java> Editor> Plantillas. このクラスを単体テストして InterruptedException をカバーできるようにする および ExecutionException ブランチ、私は複数のアプローチを試しました（ Mockito を使用して Spy ）が、これを正常にテストできませんでした。 Mockito argument matcher lambda. Mockito provides the capability to a mock to throw exceptions, so exception handling can be tested. What's different in 2.0 - RxJava Doc. Verified. In Mockito, the most common way to create a mock object is to use either @Mock annotation or Mockito.mock method. In this post, I will be showing Junit mockito doNothing example in one of the most widely used and popular JUnit Testing Mocking framework – Mockito. Mockito says arguments are not identical but they are? Mockito - NullpointerException जब स्टबिंग विधि ... java testing junit mockito stubbing. Mockito-ga ko'ra, @Mock yoki Mockito.mock (Context.class); dan foydalanib, soxta ob'ektni yaratishingiz mumkin; Buning o'rniga @RunWith (PowerMockRunner.class) ni ishlatish sababli NullpointerException ni oldim. MockitoAnnotations.initMocks(this); Merge pull request mockito#295 from nhaarman/kotlin-1.3. Mockito Scala NullPointerException. Corner case: At the time that ruleSetup is called, currentAlphabet is null, so Mockito stubs null for every call to innerMethod. @PrepareForTest({UpdateUtil.class,Log.class,SharedPreferences.class,SharedPreferen... This implementation of Answer returns SmartNull instead of null. Mockito returns null for every call to innerMethod because you're telling it to. Mockito matchers can cause NullPointerException when overriding Answers or when using (Integer) any() etc. SafeFrame Container. @InjectMocks to inject mock fields into the tested object automatically. by Hongfei Ding, Software Engineer, Shanghai Mockito is a popular open source Java testing framework that allows the creation of mock objects. when (instance). Mockito.verify(createTablePreparedStatement).execute(); //make sure we called execute. A mocked object can also be asked to throw an exception when particular methods are called on it. RxJava 2.0 has been completely rewritten from scratch on top of the Reactive-Streams specification. class) manually. The mock will replace any existing … The Mockito framework provides a variety of methods such as mock(), verify(), when(), etc., used to test Java applications. One option is create mocks for all intermediate return values and stub them before use. doAnswer - If we want our mocked void method to do something (mock the behavior despite being void). Here we've added one mock method calls, add () to the mock object via when (). There's no good way to use Mockito to … @Mock private ThirdPartyPluginLicenseStorageManager licenseManager; @Before public void setUp() throws Exception { super.setUp(); exampleMacro = new Macro(licenseManager); PluginLicense pluginLicense = Mockito.mock(PluginLicense.class); } @Test public void test() throws Exception { when(pluginLicense.getError().isDefined()).thenReturn(Boolean.FALSE); // Null pointer Exception when(licenseManager.getLicense().isDefined()).thenReturn(Boolean.TRUE); // Null pointer … Migration Notes for version 1.0.0. Mockito is designed exclusively for mocking instances of objects. The brief description of the Mockito methods are given below: Mockito mock() method. JUnit5 use @B... Mockito. To use original methods from a class you have to use "spy" instead of "mock", like for example: private DefaultSavedRequest defaultSavedRequest = spy (new DefaultSavedRequest (request, portResolver)); When an object is mocked, unless stubbed all the methods return null by default. TestNG is my testing framework. NullPointerException in Mockito when mocking method with primitive argument. With Mockito, you create a mock, tell Mockito what to do when specific methods are called on it, and then use the mock instance in your test instead of the real thing. mockito. When a method having a return value is called for a mock object, it returns an empty value such as 0, empty collections, an empty string, and null. @MockBean uses in Spring Boot. Migration Notes for version 1.0.0. When you use the spy then the real methods are called (unless a method was stubbed). Mockito. Mockitoごとに、@ MockまたはMockito.mock（Context.class）のどちらかを使用してモックオブジェクトを作成できます。 、 @RunWith（PowerMockRunner.class）を使用しているため、NullpointerExceptionが発生しました。代わりに、@RunWith（MockitoJUnitRunner.class）に変更してい … Most likely, you mistyped returning function. Step 3 − Test the MathApplication class. « Thread » From: jsto...@apache.org: Subject [02/14] nifi git commit: NIFI-5516: Implement Load-Balanced Connections Refactoring StandardFlowFileQueue to have an AbstractFlowFileQueue Refactored more into AbstractFlowFileQueue Added documentation, cleaned up code some Refactored FlowFileQueue so th The Problem is that the answer method is not only be called for "NewNavigationPlace" but also for "DynamicTablePlace" but in the latter case " invocation.getArguments()[0]" is null and so i get a null pointer exception. While running Mockito unit test for my controller I am getting the following Exception. One option is create mocks for all intermediate return values and stub them before use. ; Captor to create an ArgumentCaptor instance. doNothing (). Mockito-ге сәйкес, жасырын нысанды @Mock немесе Mockito.mock (Context.class); Мен @RunWith (PowerMockRunner.class) пайдалану себебінен NullpointerException алдым, ал орнына @RunWith (MockitoJUnitRunner.class) болып өзгердім, ол жақсы жұмыс істейді One option is create mocks for all intermediate return values and stub them before use. January 24, 2019. 1. Stubbing can be overridden: for example common stubbing can go to fixture setup but the test methods can override it. Actual unit test run time is flat, slightly favoring Kotlin by 0.15%. doAnswer: If we want our mocked void method to do something (mock the behavior despite being void). Stubbing and Mocking with Mockito and JUnit. Mockito is used for mocking. However during testing, we've called subtract () before calling add (). With Mockito, you create a mock, tell Mockito what to do when specific methods are called on it, and then use the mock instance in your test instead of the real thing. neworld pushed a commit to neworld/mockito that referenced this issue on Aug 31, 2019. Under the hood, the mock method actually creates a proxy that receives calls to all non-final methods, and logs and stubs those calls as needed. Here is an example: In unit tests, we do not want to slow the speed by making timtSleep () work in reality. You'll need to stub doReturn with an answer, instead: By default, for all methods that return a value, a mock will return either null, a a primitive/primitive wrapper value, or an empty collection, as appropriate. The following examples show how to use org.mockito.stubbing.Answer.These examples are extracted from open source projects. doThrow (new Exception ()). Mockito 的特性. @Mock private ConnectionInfo connectionInfo; @Before public void setUp() { … This implementation of Answer returns SmartNull instead of null. 14.The method used for this is thenThrow(..) of class org.mockito.Mockito. I realize that my dataSource is null here and hence the exception but not sure how to fix this problem. Mockito returns null for every call to innerMethod because you're telling it to. February 23, 2020 Java Leave a comment. Here's a sample test that demos the problem: Let's test the MathApplication class, by injecting in it a mock of calculatorService. February 23, 2020 Java Leave a comment. doAnswer, mockito, void method Void methods on mocks do nothing by default. Eclipse as the IDE, version Luna 4.4.1. Mockito and Mockito.any(Map.class) Mockito TooManyActualInvocations. But if we have to spy our objects in order to mock just a part of it, we may also have to mock the void methods. It is used to create mock objects of a given class or interface. Here is a working example of DocumentRepositoryTest class for reference: @RunWith (MockitoJUnitRunner.class) public final class DocumentRepositoryTest { @Mock private DocumentRepository … doThrow (): We can use doThrow () when we want to stub a void method that throws exception. Mockito and TextUtils. NullPointerException while running unit tests using Mockito. Mockito'ya göre, @Mock veya Mockito.mock (Context.class); tuşlarını kullanarak sahte nesne oluşturabilirsiniz. The Problem is that the answer method is not only be called for "NewNavigationPlace" but also for "DynamicTablePlace" but in the latter case " invocation.getArguments()[0]" is null and so i get a null pointer exception. @RunWith (PowerMockRunner.class) kullandığım için NullpointerException aldım, bunun yerine @RunWith (MockitoJUnitRunner.class) olarak değiştirdim Mockito returns null for every call to innerMethod because you're telling it to. You'll need to stub doReturn with an answer, instead: @Mock private ThirdPartyPluginLicenseStorageManager licenseManager; @Before public void setUp() throws Exception { super.setUp(); exampleMacro = new Macro(licenseManager); PluginLicense pluginLicense = Mockito.mock(PluginLicense.class); } @Test public void test() throws Exception { when(pluginLicense.getError().isDefined()).thenReturn(Boolean.FALSE); // Null pointer Exception when(licenseManager.getLicense().isDefined()).thenReturn(Boolean.TRUE); // Null pointer Exception } In you're example when (myService.getListWithData (inputData).get ()) will cause a NullPointerException because myService.getListWithData (inputData) is null - it has not been stubbed before. @MockBean uses in Spring Boot. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example.

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