EpisodesControllerTest.java

package annotatedspring.episodes;

import annotatedspring.Application;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.InjectMocks;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.test.context.web.WebAppConfiguration;
import org.springframework.test.web.servlet.MockMvc;

import java.util.ArrayList;
import java.util.List;

import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.*;
import static org.springframework.test.web.servlet.setup.MockMvcBuilders.standaloneSetup;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes = {Application.class})
@WebAppConfiguration
public class EpisodesControllerTest {
    @InjectMocks
    private EpisodesController episodesController;

    @Mock
    private EpisodesService episodesService;

    private MockMvc mockMvc;

    @Before
    public void setup() {
        MockitoAnnotations.initMocks(this);
        mockMvc = standaloneSetup(episodesController).build();
    }

    @Test
    public void episodeIndex_rendersIndex() throws Exception {
        List<Episode> publishedEpisodes = new ArrayList<>();

        when(episodesService.published()).thenReturn(publishedEpisodes);

        mockMvc.perform(get("/"))
                .andExpect(status().isOk())
                .andExpect(view().name("episodes/index"))
                .andExpect(model().attribute("episodes", publishedEpisodes));
    }

    @Test
    public void showEpisodes_validEpisode_rendersShow() throws Exception {
        Episode episode = mock(Episode.class);

        when(episodesService.find(1)).thenReturn(episode);

        mockMvc.perform(get("/episodes/1"))
            .andExpect(status().isOk())
            .andExpect(view().name("episodes/show"))
            .andExpect(model().attribute("episode", episode));
    }

    @Test
    public void showEpisode_withSeoPath_rendersShow() throws Exception {
        Episode episode = mock(Episode.class);

        when(episodesService.find(1)).thenReturn(episode);

        mockMvc.perform(get("/episodes/1/episode-title"))
                .andExpect(status().isOk())
                .andExpect(view().name("episodes/show"))
                .andExpect(model().attribute("episode", episode));
    }

    @Test
    public void showEpisode_invalidEpisode_throwsEpisodeNotFound() throws Exception {
        when(episodesService.find(1)).thenReturn(null);

        mockMvc.perform(get("/episodes/1/episode-title"))
                .andExpect(status().isNotFound());
    }
}