String contentLength = response.getHeaderValue("content-length"); // Test case insensitive
        String missing = response.getHeaderValue("Missing-Header");

        assertEquals("application/json", contentType);
        assertEquals("100", contentLength);
        assertNull(missing);
    }

    @Test
    public void testGetHeaderValues() {
        CurlResponse response = new CurlResponse();

import java.nio.charset.StandardCharsets;

import org.junit.Test;

/**
 * Test class for resource loading functionality in Suggester class.
 *
 * Tests cover:
 * - Successful resource loading
 * - Missing resource error handling
 * - Resource content validation
 * - InputStream null safety in try-with-resources
 */
public class SuggesterResourceLoadingTest {

    /**

        byte[] pacData = baos.toByteArray();

        PACDecodingException e = assertThrows(PACDecodingException.class, () -> new Pac(pacData, keys));
        // The error could be about version or missing buffers
        assertNotNull(e.getMessage());
    }

    @Test
    void testUnalignedBuffer() throws IOException {
        // Create PAC with unaligned buffer offset

        Handler handler = new Handler();
        Handler.GcsURLConnection conn = (Handler.GcsURLConnection) handler.openConnection(url);

        // getInputStream should try to auto-connect (and fail due to missing project ID)
        try {
            conn.getInputStream();
            fail("Should throw IOException");
        } catch (IOException e) {

    /**
     * Test calculateMac with a missing key.
     */
    @Test
    void testCalculateMacMissingKey() {
        Map<Integer, KerberosKey> keys = new HashMap<>(); // Empty map
        PACDecodingException e =
                assertThrows(PACDecodingException.class, () -> PacMac.calculateMac(PacSignature.KERB_CHECKSUM_HMAC_MD5, keys, TEST_DATA));
        assertEquals("Missing key", e.getMessage());
    }

    /**

    public String toString() {
        return "FacetInfo [field=" + Arrays.toString(field) + ", query=" + Arrays.toString(query) + ", size=" + size + ", minDocCount="
                + minDocCount + ", sort=" + sort + ", missing=" + missing + "]";
    }

        if (StringUtil.isNotBlank(sort)) {
            facetInfo.sort = sort;
        }
        final String missing = request.getParameter("facet.missing");
        if (StringUtil.isNotBlank(missing)) {
            facetInfo.missing = missing;
        }
        return facetInfo;
    }

    /**
     * Creates a geo info.
     *
     * @param request The request.

     * @param data the data to calculate the MAC for
     * @return the calculated mac bytes
     * @throws PACDecodingException if the MAC calculation fails or required keys are missing
     */
    public static byte[] calculateMac(int type, Map<Integer, KerberosKey> keys, byte[] data) throws PACDecodingException {
        try {
            int usage = 17;

                .missing(0.1f)
                .modifier(FieldValueFactorFunction.Modifier.LOG2P)
                .setWeight(1.0F)));
        flist.add(new FunctionScoreQueryBuilder.FilterFunctionBuilder(ScoreFunctionBuilders.fieldValueFactorFunction(FieldNames.QUERY_FREQ)
                .missing(0.1f)
                .modifier(FieldValueFactorFunction.Modifier.LOG2P)

**Key Test Areas**:
- Parameter handling (null, empty, missing)
- Special character handling
- Input stream validation (not consumption)
- Edge cases (long filenames, paths, whitespace)

**Test Count**: 10 tests

**Key Scenarios**:
- ✅ Valid filename extraction
- ✅ Null parameters handling
- ✅ Empty/missing resource name
- ✅ Special characters in filename (Japanese, paths)