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 * modification, must retain the above copyright notice and the following
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package io.spine.server.aggregate;

import com.google.common.truth.OptionalSubject;
import io.spine.server.aggregate.given.part.TaskRepository;
import io.spine.server.aggregate.given.part.TaskRoot;
import io.spine.test.aggregate.task.AggTask;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;

import java.util.Optional;

import static com.google.common.truth.Truth8.assertThat;

@DisplayName("In memory AggregateRootDirectory should")
class InMemoryRootDirectoryTest {

    private AggregateRootDirectory directory;
    private AggregatePartRepository<?, ?, ?> repository;

    @BeforeEach
    void setUp() {
        directory = new InMemoryRootDirectory();
        repository = new TaskRepository();
    }

    @Test
    @DisplayName("find a registered repository")
    void findRepository() {
        directory.register(repository);
        Optional<? extends AggregatePartRepository<?, ?, ?>> found =
                directory.findPart(TaskRoot.class, AggTask.class);
        OptionalSubject assertRepository = assertThat(found);
        assertRepository.isPresent();
        assertRepository.hasValue(repository);
    }

    @Test
    @DisplayName("not find a non-registered repository")
    void notFindRepository() {
        Optional<? extends AggregatePartRepository<?, ?, ?>> found =
                directory.findPart(TaskRoot.class, AggTask.class);
        OptionalSubject assertRepository = assertThat(found);
        assertRepository.isEmpty();
    }
}

Add in-mem root directory test
Add in-mem root directory test
