Spring boot test configuration

Question

I have a spring boot application with main class like below:

@SpringBootApplication public class Application {      public static void main(String[] args) throws Exception {         SpringApplication.run(Application.class, args);     } } 

Now I want to test my services and created a base test class:

@SpringApplicationConfiguration(Application.class) public abstract class TestBase { } 

When I run my test I get exception:

Caused by: java.lang.IllegalArgumentException: Can not load an ApplicationContext with a NULL 'contextLoader'. Consider annotating your test class with @ContextConfiguration.     at org.springframework.util.Assert.notNull(Assert.java:115)     at org.springframework.test.context.TestContext.loadApplicationContext(TestContext.java:117)     at org.springframework.test.context.TestContext.getApplicationContext(TestContext.java:148) 

Then I change my base test class using ContextConfiguration

@ContextConfiguration(classes = Application.class) public abstract class TestBase { } 

This time I get DataSource initialization error. I am wondering why it is failing in first case and why in second case it does not load my application.properties where I have configured datasource.

Thank you!

Answer 1

Something like that:

@RunWith(SpringRunner.class) @SpringBootTest(classes = Application.class) public class ApplicationTest{     @Autowired    Foo foo; //whatever you are testing     @Test    public void FooTest() throws Exception{      Foo f = foo.getFooById("22");      assertEquals("9B", f.getCode);     }  //TODO look into MockMVC for testing services }