logo
down
shadow

Writing JUnit test cases for a Spring Boot Service Application with autowired components


Writing JUnit test cases for a Spring Boot Service Application with autowired components

Content Index :

Writing JUnit test cases for a Spring Boot Service Application with autowired components
Tag : java , By : niel
Date : January 12 2021, 08:33 AM

Hope this helps You autowire the component under test, into the test.
You are creating the component outside of the Spring Container thus it has no knowledge of that component.
  private WebService service;

    @Before
    public void setup(){
        this.service = new WebServiceImpl();
    }
@Autowired
private WebService service;

Comments
No Comments Right Now !

Boards Message :
You Must Login Or Sign Up to Add Your Comments .

Share : facebook icon twitter icon

writing Test cases for restful service using junit


Tag : json , By : pttr
Date : March 29 2020, 07:55 AM
it helps some times Ok. So there are several things that could / should be done.
Unit test the Controller directly. Mock all other classes. Attempt to use any framework provided testing utilities to test how the controller interacts with the framework. An example of this is Spring's MockMVC. For an example, check out the "correct" answer to this question: JUnit test for ExceptionHandler

Why is my Spring Boot autowired JPA Repository failing JUnit test?


Tag : java , By : Tom D
Date : March 29 2020, 07:55 AM
will help you My JUnit test is failing with the following error: "java.lang.IllegalArgumentException: Could not find field [userRepository] of type [null] on target [com.clearsoft.demo.UserResource@756b2d90]" , Exception comes from this line:
ReflectionTestUtils.setField(userResource, "userRepository", userRepository);

Mock autowired dependency in JUnit 5 test for Spring Boot 2 app


Tag : spring , By : Vodkat
Date : March 29 2020, 07:55 AM
help you fix your problem Mockito 1 runner (MockitoJUnitRunner class) is not designed to run JUnit 5 tests.
So annotating your class with :
import org.mockito.junit.MockitoJUnitRunner;

@RunWith(MockitoJUnitRunner.class) 
public class MyJUnit5Test {
 MockitoAnnotations.initMocks(this);
@Component
public class SomeDependency {

    public String returnThat() {
        return "that";
    }
}
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.mockito.Mock;
import org.mockito.Mockito;
import org.mockito.MockitoAnnotations;
import org.junit.jupiter.api.extension.ExtendWith;
import org.mockito.junit.jupiter.MockitoExtension;

import davidhxxx.example.angularsboot.SomeDependency;

@ExtendWith(MockitoExtension.class)    
public class SomeClassTest {

    @Mock
    SomeDependency someDependencyMock;

    private SomeClass someClass;

    @BeforeEach
    public void setup(){
      someClass = new SomeClass(someDependencyMock);
    }

    @Test 
    void myFirstTest() {
      Mockito.when(someDependencyMock.returnThat()).thenReturn("mock result");
      Assertions.assertEquals("mock result", someClass.inc());
    }

}
<dependencies>
    ...
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
   ...
</dependencies>
<dependencies>
    ...
    <dependency>
        <groupId>org.junit.jupiter</groupId>
        <artifactId>junit-jupiter-engine</artifactId>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.mockito</groupId>
        <artifactId>mockito-junit-jupiter</artifactId>
        <version>2.18.0</version> <!-- version to specify as not provided by Spring Boot dependencies -->
        <scope>test</scope>
    </dependency>
</dependencies>
    <plugins>
        ...
        <plugin>
            <artifactId>maven-surefire-plugin</artifactId>
            <version>2.19</version>
            <dependencies>
                <dependency>
                    <groupId>org.junit.platform</groupId>
                    <artifactId>junit-platform-surefire-provider</artifactId>
                    <version>1.0.0</version>
                </dependency>
            </dependencies>
        </plugin>
     ...
   <plugins>

How to write Junit test cases for spring boot application?


Tag : java , By : koder
Date : March 29 2020, 07:55 AM
it helps some times I have managed to make your code to work. I will post only the changed classes:
The interface:
public interface DisplayRepository extends CrudRepository<Display, Long> {

   Optional<Display> findByTitle(String name);
}
@RunWith(SpringRunner.class)
@AutoConfigureTestDatabase(replace= AutoConfigureTestDatabase.Replace.NONE)
@DataJpaTest
public class DisplayRepositoryTest {

@Autowired
private TestEntityManager testEntityManager;

@Autowired
private DisplayRepository productRespository;

@Before()
public void setUp(){

    Display m = new Display();
    // m.setId(2L); // The ID is autogenerated; can retrieve it from the persistAndFlush result
    m.setCategory("Group1");
    m.setTitle("Product2");

    testEntityManager.persistAndFlush(m);
}

@Test
public void whenFindByName_thenReturnProduct() {
    // when
    Display product = productRespository.findByTitle("Product2").orElseThrow(() -> new RuntimeException("Product not found"));

    // then
    assertThat(product.getTitle()).isEqualTo("Product2");
}

@Test
public void whenFindAll_thenReturnProductList() {
    // when
    List<Display> products = (List<Display>) productRespository.findAll();

    // then
    assertThat(products).hasSize(1);
}
}
@Before
public void setUp() {
    MockitoAnnotations.initMocks(this);
}

Can't Autowire Service in JUnit 4 Test in Spring Boot Multi Module Application


Tag : java , By : Nate Bedortha
Date : March 29 2020, 07:55 AM
may help you . You should avoid using field injection (even though is possible) and use constructor injection. This will solve this problem as you will be able to pass the service from the constructor but it will also be useful in the future as you can locate usages and trace objects in your code way better than field injections which are "hidden"
So I recommend instead of trying to solve your problem here to refactor your class in constructor injection and pass the service from there either by directly creating the object in your test or by creating a configuration for your test that will generate the object and give the arguments it requires
@ContextConfiguration(classes = { GeneralTester.TestConfig.class })
@RunWith(SpringRunner.class)
public class GeneralTester {
  @TestConfiguration
  public static class TestConfig {
    @Bean
    public IProductService productService(final IProductRepository productRepository){
     return new ProductService(productRepository);
    }
    @Bean
    public IProductRepository productRepository(){
      return mock(IProductRepository.class);
    }
  }

  @Autowire
  public IProductService productService;

  @Autowire
  public IProductRepository productRepository;

  @Before
  public void setUp() {
    reset(productRepository);
  }

  @After
  public void tearDown() {
    verifyNoMoreInteractions(productRepository);
  }

  @Test
  public void doSmth() {
    //... your setup
    when(productRepository.save(any())).thenReturn("something");
    //... your call and assertions
    verify(productRepository).save(any());
  }
}
Related Posts Related QUESTIONS :
  • What are the different methods to parse strings in Java?
  • Android Broadcastreceiver for other apps install/delete not working
  • Android Studio onClick not working in BindViewHolder
  • How to use Spring Converter for some controllers only?
  • How verify that 3 numbers in sequence are equals?
  • When using .compareTo to compare dates, why doesn't it take Months into account?
  • Does the perfomance of "filter then map" and "map then filter" differ in a Stream?
  • How can I set the initial Delay after pressing the start Button to a specific time (HH:mm:ss) format
  • How to switch between Android devices during the tests
  • How to configure java.util.logging via properties to use standard output?
  • How to iterate through array in order
  • Is there better way of iteration to find the evenly divisible number?
  • How do I avoid using if statements with a large amount of variables in java
  • Cors for GET with Postman not showing headers
  • Printing values in different column same row using APACHE POI
  • Fully decompile java6 web application
  • Passing keycloak configuration parameters in the code rather than reading from application.properties
  • setDataSource() IO exception
  • Unexpected Output while retrieving Data from mongodb and displaying in a csv file?
  • Algorithm for searching a value in two arrays
  • How to avoid casting with generic return values?
  • Java/RegEx - Negation of pattern not working
  • How to split a string to non empty words if it might include a separator like tab on first place
  • Supplier<Sequence<String>> cannot be iterated more than once
  • Why there is only one thread can actually started in @PostConstruct method?
  • Manage CompletionStage inside of Netty handler
  • Url Problem while Developing on Localhost and deploy on Remote Virtual Server
  • How to identify the missing type id in Jackson error?
  • android data binding error: cannot find symbol
  • Spring Boot application with a jar dependency does not run after maven build
  • Spring Data JPA query , filter ? search engine ? JPQL?
  • Why LiveData returns null in ViewModel?
  • what this line of code mean....new URLClassLoader(new URL[0],getClass().getClassLoader());
  • Why do need to use new Random() instead of just Random Randomnum?
  • I want to access zk components from the java file
  • How do I cast FieldValue.serverTimestamp() to Kotlin/Java Date Class
  • Insertion Sort Double Array with User Input - JAVA
  • Creating 2 dimesional array with user input and find sum of specific columns
  • can not get Advertising ID Provider in android
  • Convert list of Objects to map of properties
  • How to represent an undirected weighted graph in java
  • Return values as array from collection
  • ByteBuddy generic method return cast to concrete type
  • ImageView hides the round corners of the parent
  • Is there a way to find setter method by its getter method or vice versa in a class?
  • Get aggregated list of properties from list of Objects(Java 8)
  • Unable to find a document in Mongodb where exact date match in java
  • UsernamePasswordAuthenticationFilter skips success handler
  • Use Java filter on stream with in a stream filter
  • Default Login not successful in spring boot 2.1.7
  • Adding key value pairs from a file to a Hashmap
  • Rub regex: matching a char except when after by another char
  • Convert Base64 String to String Array
  • Escape Unicode Character 'POPCORN' to HTML Entity
  • An empty JSON field which is a boolean/nullable field in Java model, is getting converted as null
  • Mongo java driver cannot find public constructor for interface
  • How to unit test writing a file to AWS Lambda output stream?
  • How to make a GitHub GraphQL API Call from Java
  • What's the difference between @ComponentScan and @Bean in a context configuration?
  • Expected class or package adding a view using a class
  • shadow
    Privacy Policy - Terms - Contact Us © scrbit.com