How to write a repository test?

[LiveNathan]

It seems like this should be really simple with EclipseStore. So simple, in fact, that there's nothing in the documentation about it! :)

Here's what I've got so far:

@Tag("database")
class ClockEclipseRepositoryTest {
    private EmbeddedStorageManager storageManager;
    private ClockEclipseAdapter clockEclipseAdapter;

    @BeforeEach
    void setUp() throws IOException {
        NioFileSystem fileSystem = NioFileSystem.New();
        Path testDirectory = Paths.get("src", "test", "resources", "storage");
        if (!Files.exists(testDirectory)) {
            Files.createDirectories(testDirectory);
        }
        final DataRoot root = new DataRoot();

        storageManager = EmbeddedStorage.start(root, testDirectory);
        clockEclipseAdapter = new ClockEclipseAdapter(storageManager);
    }

    @Test
    void canReadAndWriteClockEvents() throws Exception {
        ClockEvent clockInEvent = new ClockEvent(ClockService.fixed(), ClockEventType.IN);
        clockEclipseAdapter.save(clockInEvent);
        List<ClockEvent> actualEvents = clockEclipseAdapter.findAll();

        assertThat(actualEvents).hasSize(1);
    }

}

Root

public class DataRoot
{
    private final List<ClockEvent> clockEvents = new ArrayList<>();

    public DataRoot()
    {
        super();
    }

    public List<ClockEvent> allClockEvents() {
        return new ArrayList<>(this.clockEvents);
    }

}

Adapter

@Component
public class ClockEclipseAdapter implements ClockRepository {
    private final EmbeddedStorageManager storageManager;

    public ClockEclipseAdapter(EmbeddedStorageManager storageManager) {
        this.storageManager = storageManager;
    }

    @Override
    @Write
    public void save(ClockEvent clockEvent) {
        DataRoot root = (DataRoot) storageManager.root();
        root.allClockEvents().add(clockEvent);
        storageManager.storeRoot();
    }

    @Override
    @Read
    public List<ClockEvent> findAll() {
        DataRoot root = (DataRoot) storageManager.root();
        return new ArrayList<>(root.allClockEvents());
    }
}

Repo

public interface ClockRepository {
    void save(ClockEvent clockEvent);

    List<ClockEvent> findAll();
}

[LiveNathan]

I figured it out. Here's my answer on gitHub

[zdenek-jonas]

I use Junit5 @tempdir annotation. Work with java.util.Path. This could be used direct to the start method.

Something like:

[LiveNathan]

I didn't know about that. Thank you!