What is ContextConfiguration in spring?

@ContextConfiguration defines class-level metadata that is used to determine how to load and configure an ApplicationContext for integration tests.

What XML file does Spring use when creating the application context in this integration test?

xml for normal app use and the second in beans-datasource-it. xml for integration tests. The configuration that’s common to normal app use and integration tests (i.e., the vast majority of your bean config in most cases) should be in a common config file or files.

How do you test a spring bean?

To test whether Spring MVC controllers are working as expected, use the @WebMvcTest annotation. To test that Spring WebFlux controllers are working as expected, you can use the @WebFluxTest annotation. You can use the @DataJpaTest annotation to test JPA applications.

Which class should be used to load the Spring configuration file located in the classpath?

By default the ApplicationContext is loaded using the GenericXmlContextLoader which loads a context from XML Spring configuration files. You can then access beans from the ApplicationContext by annotating fields in your test class with @Autowired , @Resource , or @Inject .

What type of tests typically use spring?

What type of tests typically use Spring

  • Spring provides mock objects and testing support classes for Unit Testing. Tests one unit of functionality. Keeps dependencies minimal.
  • Spring provides first-class support for integration testing. Tests the interaction of multiple units working together.

What is the difference between SpringJUnit4ClassRunner and SpringRunner?

There is no difference, from the javadoc: SpringRunner is an alias for the SpringJUnit4ClassRunner. @RunWith(SpringRunner. class) tells JUnit to run using Spring’s testing support.

How do you test a transactional in spring?

How do you test Spring @Transactional without just hitting hibernate level 1 cache or doing manual session flush?

  1. call a method that changes a User object then calls a @Transactional service method to persist it.
  2. read the object back from the DB and insure it’s values are correct after the method.

How do I instantiate a spring bean?

Instantiating bean using a static factory method In this mechanism, the Spring IoC container creates a new bean by calling the static factory method of a class specified by the class attribute of element in XML configuration metadata.

How does Spring achieve DI or IoC?

Spring implements DI by either an XML configuration file or annotations. Dependency injection is a pattern through which IoC is implemented and the act of connecting objects with other objects or injecting objects into objects is done by container rather than by the object themselves.

Does Spring support unit testing?

In Spring 2.5 and later, unit and integration testing support is provided in the form of the annotation-driven Spring TestContext Framework. The TestContext Framework is agnostic of the actual testing framework in use, thus allowing instrumentation of tests in various environments including JUnit, TestNG, and so on.

What is a SpringRunner?

SpringRunner is an alias for the SpringJUnit4ClassRunner . To use this class, simply annotate a JUnit 4 based test class with @RunWith(SpringRunner. class) . If you would like to use the Spring TestContext Framework with a runner other than this one, use SpringClassRule and SpringMethodRule .

How is contextconfiguration used in Spring Integration Test?

By Arvind Rai, January 16, 2019 @ContextConfiguration loads an ApplicationContext for Spring integration test. @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.

What is the @ configuration annotation in spring test?

@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.

How to load multiple configuration classes in spring test?

To load multiple configuration classes we can specify them as following. Here we will load XML configuration class. Suppose we have spring-config.xml in classpath. We use @ContextConfiguration as following. As we know that value is the alias for locations element of @ContextConfiguration. So we can specify resource file as following, too.

Where to find spring test with context.xml?

Since we have not specified the classes or locations attribute, spring will look for the default XML file {test class}-Context.xml, in our case SpringTestWithContextConfiguration-Context.xml or any inner static classes annotated with @Configuration.