See package: /src/test/java/hello/mocking

Mocking with @MockBean

See package: /src/test/java/hello/nothingmocking

It's mean than we don't mock anything.

The @SpringBootTest annotation can be used when we need to bootstrap the entire container. The annotation works by creating the ApplicationContext that will be utilized in our tests.

Provides the following features over and above the regular Spring TestContext Framework:

• Uses SpringBootContextLoader as the default ContextLoader when no specific @ContextConfiguration (loader=…) is defined.
• Automatically searches for a @SpringBootConfiguration when nested @Configuration is not used, and no explicit classes are specified.
• Allows custom Environment properties to be defined using the properties attribute.
• Provides support for different web environment modes, including the ability to start a fully running web server listening on a defined or random port.
• Registers a TestRestTemplate and/or WebTestClient bean for use in web tests that are using a fully running web server.

1. create database see src/main/resources/db.sql
2. cp src/main/resources/application.properties.dist src/main/resources/application.properties
3. cp src/test/resources/application.properties.dist src/test/resources/application.properties for integration testing
4. set db config in application.properties

see /src/test/java/hello/ApplicationTest.java

(better use @WebMvcTest(RestController.class) but this is for example)

see /src/test/java/hello/MvcMockTest.java

see /src/test/java/hello/TestRestTemplateTest.java

Of course you do not need to run the entire context for testing, but for an example
see /src/test/java/hello/dao/EmployeeDaoImplTest.java