Testing a Java-injected Springboot service

You must have the following dependencies, Junit is included, do not add it.

  	<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
      <version>2.7.3</version>
		</dependency>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
      <version>2.7.3</version>
			<scope>test</scope>
		</dependency>

you must write down the main class:

@SpringBootApplication
public class App 

you must write down the class of the tests:

@SpringBootTest
public class IdGeneratorTest {

you must inject the service:

@Autowired
private IdGenerator service;

you can use it like this:

@Test
void testNoRepeated() {
String symbolsOrder = "1234567890";
service.configure(10, symbolsOrder );

You must write down the class you want to convert into a service:

@Service

above:

public class IdGenerator {

services and the main class do not have a constructor

the imports are:

import org.springframework.stereotype.Service;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.boot.autoconfigure.SpringBootApplication;