/**
     * Creates a file with the specified path, handling directory creation and duplicate names.
     *
     * @param path the file path to create
     * @return the created file
     * @throws CrawlerSystemException if directory creation fails
     */
    protected File createFile(final String path) {
        final String[] paths = path.split("/");
        File targetFile = baseDir;

   *
   * @param array a <i>nonempty</i> array of {@code float} values
   * @return the value present in {@code array} that is less than or equal to every other value in
   *     the array
   * @throws IllegalArgumentException if {@code array} is empty
   */
  @GwtIncompatible(
      "Available in GWT! Annotation is to avoid conflict with GWT specialization of base class.")
  public static float min(float... array) {

   *
   * <p>If the dataset contains any non-finite values ({@link Double#POSITIVE_INFINITY}, {@link
   * Double#NEGATIVE_INFINITY}, or {@link Double#NaN}) then the result is {@link Double#NaN}.
   *
   * @throws IllegalStateException if the dataset is empty
   */
  public double populationCovariance() {
    checkState(count() != 0);
    return sumOfProductsOfDeltas / count();
  }

  /**

        assertProvideThrowsException("Test😀Classification");
    }

    // Helper method to assert that provide() throws ProvidedClassificationNotFoundException
    private void assertProvideThrowsException(String classificationName) {
        try {
            provider.provide(classificationName);
            fail("Should throw ProvidedClassificationNotFoundException for: " + classificationName);

     *
     * @param key the feature key
     * @param value the feature value
     * @throws CrawlerSystemException if key or value is null
     */
    public void addFeature(final String key, final String value) {
        if (StringUtil.isBlank(key) || StringUtil.isBlank(value)) {
            throw new CrawlerSystemException("key or value is null.");
        }

        featureMap.put(key, value);
    }

    doTestNull(forPredicate(Predicates.equalTo('c')));
  }

  private void doTestEmpty(CharMatcher matcher) throws Exception {
    reallyTestEmpty(matcher);
    reallyTestEmpty(matcher.negate());
    reallyTestEmpty(matcher.precomputed());
  }

  private void reallyTestEmpty(CharMatcher matcher) throws Exception {
    assertEquals(-1, matcher.indexIn(""));
    assertEquals(-1, matcher.indexIn("", 0));
    try {

public class LtrQueryRescorerTest extends UnitFessTestCase {

    private LtrQueryRescorer ltrQueryRescorer;

    @Override
    public void setUp() throws Exception {
        super.setUp();
        ltrQueryRescorer = new LtrQueryRescorer();
    }

    @Override
    public void tearDown() throws Exception {
        ComponentUtil.setFessConfig(null);
        super.tearDown();
    }

    public void test_constructor() {

   * specified map must contain at least one mapping, in order to determine the key and value types.
   *
   * @param map the map whose mappings are to be placed in this map
   * @throws IllegalArgumentException if map is not an {@code EnumBiMap} instance and contains no
   *     mappings
   */
  public static <K extends Enum<K>, V extends Enum<V>> EnumBiMap<K, V> create(Map<K, V> map) {

     * @param keys the Kerberos keys for decryption
     * @return a list of parsed authorization data
     * @throws PACDecodingException if the data cannot be decoded
     */
    public static List<KerberosAuthData> parse(int authType, byte[] token, Map<Integer, KerberosKey> keys) throws PACDecodingException {

        List<KerberosAuthData> authorizations = new ArrayList<>();

        switch (authType) {

                NullPointerException.class, () -> new UrlSource(null), "Should fail, since you must specify a url");
        assertEquals("url cannot be null", e.getMessage());
    }

    @Test
    void testGetInputStream() throws Exception {
        URL txtFile = new File("target/test-classes/source.txt").toURI().toURL();
        UrlSource source = new UrlSource(txtFile);
        try (InputStream is = source.getInputStream();