What is @contextconfiguration used for in context loader?
Consequently @ContextConfiguration can be used to declare either path-based resource locations (via the locations () or value () attribute) or annotated classes (via the classes () attribute). Note, however, that most implementations of SmartContextLoader only support a single resource type.
How to load classes annotated with @contextconfiguration in Java?
We can also load classes annotated with javax.inject . @ContextConfiguration annotation has following elements. classes: The classes annotated with @Configuration are assigned to load ApplicationContext . inheritInitializers: A Boolean value to decide whether context initializers from test super classes should be inherited or not. Default is true.
What is the difference between @configuration and @classes?
classes: The classes annotated with @Configuration are assigned to load ApplicationContext . inheritInitializers: A Boolean value to decide whether context initializers from test super classes should be inherited or not.
What does Spring boot test do?
The @SpringBootTest annotation is useful when we need to bootstrap the entire container. The annotation works by creating the ApplicationContext that will be utilized in our tests. We can use the webEnvironment attribute of @SpringBootTest to configure our runtime environment; we're using WebEnvironment.
What is AnnotationConfigContextLoader?
public class AnnotationConfigContextLoader extends AbstractGenericContextLoader. Concrete implementation of AbstractGenericContextLoader that loads bean definitions from component classes. See the Javadoc for @ContextConfiguration for a definition of component class.
What is the purpose of the @ContextConfiguration annotation in a JUnit test?
At its core, the TestContext framework allows you to annotate test classes with @ContextConfiguration to specify which configuration files to use to load the ApplicationContext for your test.
What is @configuration in Spring boot?
@Configuration annotation indicates that a class declares one or more @Bean methods and may be processed by the Spring container to generate bean definitions and service requests for those beans at runtime. Since spring 2, we were writing our bean configurations to xml files.
Why do we use @ContextConfiguration?
@ContextConfiguration can load ApplicationContext using XML resource or the JavaConfig annotated with @Configuration . The @ContextConfiguration annotation can also load a component annotated with @Component , @Service , @Repository etc. We can also load classes annotated with javax.
What is ContextConfiguration annotation?
Annotation Type ContextConfiguration. @Target(value=TYPE) @Retention(value=RUNTIME) @Documented @Inherited public @interface ContextConfiguration. @ContextConfiguration defines class-level metadata that is used to determine how to load and configure an ApplicationContext for integration tests.
What is bean in Spring?
Bean Definition In Spring, the objects that form the backbone of your application and that are managed by the Spring IoC container are called beans. A bean is an object that is instantiated, assembled, and otherwise managed by a Spring IoC container.
What is @configuration and @bean in Spring?
Annotating a class with the @Configuration indicates that the class can be used by the Spring IoC container as a source of bean definitions. The @Bean annotation tells Spring that a method annotated with @Bean will return an object that should be registered as a bean in the Spring application context.
What is @controller and @RestController?
@Controller is used to mark classes as Spring MVC Controller. @RestController annotation is a special controller used in RESTful Web services, and it's the combination of @Controller and @ResponseBody annotation. It is a specialized version of @Component annotation.
What is difference between @service and @component?
@Component is a generic stereotype for any Spring-managed component. @Service annotates classes at the service layer. @Repository annotates classes at the persistence layer, which will act as a database repository.
Load JavaConfig
Find the example to define application context configuration class with @ContextConfiguration. Suppose we have AppConfig class annotated with @Configuration. We use @ContextConfiguration as following.
Load XML Configuration
Here we will load XML configuration class. Suppose we have spring-config.xml in classpath. We use @ContextConfiguration as following.
Load Initializer Class
We specify application context initializers classes using initializers element that initializes ConfigurableApplicationContext .
Using Custom Loader
Here we will use locations and loader element together. locations will specify XML configuration file and loader will specify custom context loader.
Definition
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Examples
The following example shows how to use the ContextConfiguration class when you call the RegisterContext method in order to register a data context with scaffolding enabled.
Remarks
The ContextConfiguration class enables you to customize data access. For example, you can use this class to enable scaffolding for a Web application, or to define a custom metadata provider.
