Configuration Error: Found Multiple Declarations of @bootstrapwith for test class
This error occurs when there are multiple declarations of the @BootstrapWith annotation in a test class in the Java unit testing framework, such as JUnit or TestNG.
The @BootstrapWith annotation is used to specify the custom test class bootstrapper that should be used to initialize the test environment. It allows you to configure the test class with specific configurations or dependencies before executing the tests.
Example:
import org.junit.jupiter.api.Test;
import org.springframework.test.annotation.BootstrapWith;
import org.springframework.test.context.junit.jupiter.SpringJUnitConfig;
@SpringJUnitConfig
@BootstrapWith(MyCustomBootstrapper.class) // First declaration
@BootstrapWith(AnotherBootstrapper.class) // Second declaration
public class MyTest {
@Test
public void testSomething() {
// Test implementation
}
}
In the above example, the MyTest class has two declarations of the @BootstrapWith annotation, specifying two different bootstrappers: MyCustomBootstrapper and AnotherBootstrapper. This causes a configuration error as only one bootstrapper can be used per test class.
Solution:
To fix this error, you need to remove or comment out one of the declarations of the @BootstrapWith annotation in the test class. Choose the appropriate bootstrapper for your test scenario and remove the other declaration.
import org.junit.jupiter.api.Test;
import org.springframework.test.annotation.BootstrapWith;
import org.springframework.test.context.junit.jupiter.SpringJUnitConfig;
@SpringJUnitConfig
//@BootstrapWith(AnotherBootstrapper.class) // Remove this declaration
@BootstrapWith(MyCustomBootstrapper.class) // Keep this declaration
public class MyTest {
@Test
public void testSomething() {
// Test implementation
}
}
Now, the MyTest class has only one declaration of the @BootstrapWith annotation, specifying the desired bootstrapper MyCustomBootstrapper. The error should be resolved, and you can proceed with your test execution.