@Test
  public void inDegree_oneEdge() {
    addEdge(N1, N2, E12);
    assertThat(network.inDegree(N2)).isEqualTo(1);
    assertThat(network.inDegree(N1)).isEqualTo(1);
  }

  @Test
  public void outDegree_oneEdge() {
    addEdge(N1, N2, E12);
    assertThat(network.outDegree(N1)).isEqualTo(1);
    assertThat(network.outDegree(N2)).isEqualTo(1);
  }

  @Test
  public void edges_selfLoop() {

/**
 * RepositoryMetadataManager
 */
@Deprecated
public interface RepositoryMetadataManager {

    void resolve(RepositoryMetadata repositoryMetadata, RepositoryRequest repositoryRequest)
            throws RepositoryMetadataResolutionException;

    void resolve(
            RepositoryMetadata repositoryMetadata,
            List<ArtifactRepository> repositories,

 */
public class TimestampConversionUtilTest {

    @Before
    public void setUp() throws Exception {
        LocaleUtil.setDefault(() -> Locale.JAPANESE);
    }

    @After
    public void tearDown() throws Exception {
        LocaleUtil.setDefault(null);
    }

    /**
     * @throws Exception
     */
    //    @Test
    //    public void testToDate_Null() throws Exception {

    /**
     * @throws Exception
     */
    @Test
    public void testSplit() throws Exception {
        final String[] array = StringUtil.split("aaa\nbbb", "\n");
        assertEquals("1", 2, array.length);
        assertEquals("2", "aaa", array[0]);
        assertEquals("3", "bbb", array[1]);
    }

    /**
     *
     */
    @Test
    public void testSplit2() {

@NullUnmarked
public class TypeResolverTest extends TestCase {

  public void testWhere_noMapping() {
    Type t = aTypeVariable();
    assertEquals(t, new TypeResolver().resolveType(t));
  }

  public void testWhere_typeVariableMapping() {
    Type t = aTypeVariable();
    assertEquals(String.class, new TypeResolver().where(t, String.class).resolveType(t));
  }

  public <T> void testWhere_indirectMapping() {

public class NumberConversionUtilTest extends TestCase {

    /**
     * @throws Exception
     */
    public void testConvertNumber_byte() throws Exception {
        assertEquals(Byte.valueOf("1"), NumberConversionUtil.convertNumber(Byte.class, "1"));
    }

    /**
     * @throws Exception
     */
    public void testConvertNumber_primitiveWrapper() throws Exception {

    public SitemapsHelper sitemapsHelper;

    @Override
    protected void setUp() throws Exception {
        super.setUp();
        StandardCrawlerContainer container = new StandardCrawlerContainer().singleton("sitemapsHelper", SitemapsHelper.class);
        sitemapsHelper = container.getComponent("sitemapsHelper");
    }

    public void test_parseXmlSitemaps() {

        void nullDelegate_throwsNPE() throws Exception {
            SmbFile parent = newParent();
            assertThrows(NullPointerException.class, () -> new ShareEnumIterator(parent, null, null));
        }

        @Test
        @DisplayName("Null parent with non-empty iterator causes NullPointerException during adapt")
        void nullParent_throwsNPE() {

   *
   * <p>The serialized output consists of the number of entries, first key, first value, second key,
   * second value, and so on.
   */
  static <K extends @Nullable Object, V extends @Nullable Object> void writeMap(
      Map<K, V> map, ObjectOutputStream stream) throws IOException {
    stream.writeInt(map.size());
    for (Map.Entry<K, V> entry : map.entrySet()) {
      stream.writeObject(entry.getKey());

 */
class StringUtilTest {

    @Test
    @DisplayName("Should join single element without delimiter")
    void testJoinSingleElement() {
        String result = StringUtil.join(",", "hello");
        assertEquals("hello", result);
    }

    @Test
    @DisplayName("Should join two elements with delimiter")
    void testJoinTwoElements() {
        String result = StringUtil.join(",", "hello", "world");