Using junit test to pass command line argument to Spring Boot application

Question

I have a very basic Spring Boot application, which is expecting an argument from command line, and without it doesn\'t work. Here is the code.

@SpringBootApplica         


        

Answer 1

I´ve managed to find a way to create Junit tests that worked fine with SpringBoot by injecting the ApplicationContext in my test and calling a CommandLineRunner with the required parameters.

The final code looks like that:

package my.package.

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.context.ApplicationContext;
import org.springframework.test.context.junit4.SpringRunner;

@RunWith(SpringRunner.class)
@SpringBootTest
class AsgardBpmClientApplicationIT {

    @Autowired
    ApplicationContext ctx;

    @Test
    public void testRun() {
        CommandLineRunner runner = ctx.getBean(CommandLineRunner.class);
        runner.run ( "-k", "arg1", "-i", "arg2");
    }

}