[Improvement]: Add Testing

[beanbeanjuice]

Is there an existing issue for this?

• I have searched the existing issues and not found ones relating to my problem.

Improvement

Find a way to properly test the plugin on different versions automatically.

Are you certain this is a improvement request?

• I am certain this is an improvement request, not a feature request, bug report, or security vulnerability report.

[beanbeanjuice]

• Use mockito-core for main plugin.
• Use MockBukkit for helper plugin.

Mockito Example:

import net.md_5.bungee.api.connection.ProxiedPlayer;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import static org.mockito.Mockito.*;

public class MyCommandExecutorTest {

    private MyCommandExecutor commandExecutor;
    private ProxiedPlayer mockPlayer;

    @BeforeEach
    void setUp() {
        mockPlayer = mock(ProxiedPlayer.class);
        commandExecutor = new MyCommandExecutor(); // Assuming MyCommandExecutor is your class
    }

    @Test
    void testCommandExecution() {
        // Arrange: Set up the command arguments
        String[] args = {"hello"};

        // Act: Execute the command
        commandExecutor.onCommand(mockPlayer, null, "mycommand", args);

        // Assert: Verify that a message was sent to the player
        verify(mockPlayer).sendMessage("Hello from MyCommandExecutor!");
    }
}