Multi-Chess/fh.fd.ci.server/src/test/java/de/fd/fh/server/game/web/GameControllerTest.java

package de.fd.fh.server.game.web;

import de.fd.fh.server.game.GameId;
import de.fd.fh.server.game.GameService;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.mockito.ArgumentCaptor;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import spark.Request;
import spark.Response;

import java.io.IOException;

import static org.junit.jupiter.api.Assertions.*;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

public class GameControllerTest
{
    @Mock
    Request request;
    @Mock
    Response response;
    @Mock
    GameService service;

    @BeforeEach
    void before()
    {
        MockitoAnnotations.openMocks(this);
    }

    @Test
    void testCreateGame() throws IOException
    {
        when(request.body()).thenReturn("{\"whiteUserId\":\"12345\",\"blackUserId\":\"98765\"}");
        when(service.createGame(any(), any())).thenReturn(GameId.of("56789"));

        ArgumentCaptor<String> bodyCaptor = ArgumentCaptor.forClass(String.class);
        ArgumentCaptor<Integer> statusCaptor = ArgumentCaptor.forClass(Integer.class);

        new GameController(service).createGame(request, response);

        verify(response).body(bodyCaptor.capture());
        verify(response).status(statusCaptor.capture());

        assertNotNull(bodyCaptor.getValue());
        assertTrue(bodyCaptor.getValue().contains("56789"));

        assertNotNull(statusCaptor.getValue());
        assertEquals(201, statusCaptor.getValue());
    }

    @Test
    void testFailedCreateGame() throws IOException
    {
        when(request.body()).thenReturn("{\"whiteUserId\":\"12345\",\"blackUserId\":\"98765\"}");
        when(service.createGame(any(), any())).thenReturn(null);

        ArgumentCaptor<Integer> statusCaptor = ArgumentCaptor.forClass(Integer.class);

        new GameController(service).createGame(request, response);

        verify(response).status(statusCaptor.capture());

        assertNotNull(statusCaptor.getValue());
        assertEquals(400, statusCaptor.getValue());
    }
}