assertTrue(tokens.isEmpty());
    }

    @Test
    public void testAnalyzeWithSpecialCharacters() {
        // Test analyze with special characters
        String text = "******@****.*** #hashtag $100";
        String field = "content";
        String lang = "en";

        List<AnalyzeToken> tokens = analyzer.analyze(text, field, lang);

        assertNotNull(tokens);

        // Emoji and special symbols - quotes preserved
        value = "\"🚀rocket\",\"@symbol\",\"#hashtag\"";
        result = KuromojiCSVUtil.parse(value);
        assertEquals(3, result.length);
        assertEquals("🚀rocket", result[0]);
        assertEquals("@symbol", result[1]);
        assertEquals("\"#hashtag\"", result[2]);
    }

    @Test
    public void test_parse_single_field() {
        String value;

        }
    }

    @Test
    public void testConvertWithNumbersAndSymbols() throws IOException {
        // Test convert with numbers and symbols
        String text = "123 456.789 #hashtag @mention";
        String field = "content";

        List<String> results = converter.convert(text, field, "en");

        assertNotNull(results);
    }

    }

    @Test
    public void test_messageWithSpecialCharacters() {
        // Setup
        final String message = "Query error: field:\"test value\" AND category:[A TO Z] OR tag:#hashtag @mention $special %wildcard";
        final VaMessenger<FessMessages> messageCode = messages -> messages.addErrorsInvalidQueryUnknown(UserMessages.GLOBAL_PROPERTY_KEY);

   * specific length.
   *
   * <p>For example, if you need 1024-bit hash codes, you could join two {@link Hashing#sha512} hash
   * functions together: {@code Hashing.concatenating(Hashing.sha512(), Hashing.sha512())}.
   *
   * @since 19.0
   */
  public static HashFunction concatenating(
      HashFunction first, HashFunction second, HashFunction... rest) {

# OAuth2 con Password (y hashing), Bearer con tokens JWT { #oauth2-with-password-and-hashing-bearer-with-jwt-tokens }

Ahora que tenemos todo el flujo de seguridad, hagamos que la aplicación sea realmente segura, usando tokens <abbr title="JSON Web Tokens">JWT</abbr> y hashing de contraseñas seguras.

Este código es algo que puedes usar realmente en tu aplicación, guardar los hashes de las contraseñas en tu base de datos, etc.

import static com.google.common.base.Preconditions.checkPositionIndex;
import static com.google.common.collect.CollectPreconditions.checkEntryNotNull;
import static com.google.common.collect.Hashing.closedTableSize;
import static com.google.common.collect.ImmutableMapEntry.createEntryArray;
import static java.util.Objects.requireNonNull;

import com.google.common.annotations.GwtCompatible;

package com.google.common.collect;

import static com.google.common.base.Preconditions.checkElementIndex;
import static com.google.common.collect.CollectPreconditions.checkPositive;
import static com.google.common.collect.Hashing.smearedHash;

import com.google.common.annotations.GwtCompatible;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.base.Preconditions;
import com.google.common.collect.Multiset.Entry;

        final Map<String, Object> params = new HashMap<>();
        params.put("test", "value");
        assertNull(groovyEngine.evaluate(null, params));
    }

    /**
     * Test that evaluate returns null for empty string template
     */
    @Test
    public void test_evaluate_emptyTemplate() {
        final Map<String, Object> params = new HashMap<>();
        params.put("test", "value");

        Map<String, String> searchParams = new HashMap<>();
        searchParams.put("q", "*");
        String searchResponse = checkMethodBase(new HashMap<>()).params(searchParams).get("/api/v1/documents").asString();
        String queryId = JsonPath.from(searchResponse).getString("query_id");

        // Try to set favorite with invalid docId
        Map<String, String> params = new HashMap<>();
        params.put("queryId", queryId);