String[] result = JvmUtil.filterJvmOptions(new String[0]);
        assertEquals(0, result.length);
    }

    @Test
    public void test_filterJvmOptions_singleElement() {
        System.setProperty("java.version", "11.0.1");

        String[] result = JvmUtil.filterJvmOptions(new String[] { "-Xmx1g" });
        assertEquals(1, result.length);
        assertEquals("-Xmx1g", result[0]);

        for (int i = 0; i < this.unlocks.length; i++) {
            this.unlocks[i] = createLockRange();
            bufferIndex += this.unlocks[i].decode(buffer, bufferIndex, buffer.length);
        }

        for (int i = 0; i < this.locks.length; i++) {
            this.locks[i] = createLockRange();
            bufferIndex += this.locks[i].decode(buffer, bufferIndex, buffer.length);
        }

        assertEquals(0, tags.length);

        // Test null
        tags = PrunedTag.parse(null);
        assertEquals(0, tags.length);

        // Test whitespace only
        tags = PrunedTag.parse("   ");
        assertEquals(0, tags.length);

        // Test commas only
        tags = PrunedTag.parse(",,,");
        assertEquals(0, tags.length);

        // Test mixed whitespace and commas

        int offset = 50;
        byte[] infoData = createMockFileBasicInfoBuffer();
        System.arraycopy(infoData, 0, buffer, offset, infoData.length);
        response.setDataCount(infoData.length);

        int bytesRead = response.readDataWireFormat(buffer, offset, buffer.length - offset);

        assertTrue(bytesRead > 0);
        assertNotNull(response.getInfo());
    }

                + (challengeBytes == null ? "null" : "<" + challengeBytes.length + " bytes>") + ",context="
                + (contextBytes == null ? "null" : "<" + contextBytes.length + " bytes>") + ",targetInformation="
                + (targetInformationBytes == null ? "null" : "<" + targetInformationBytes.length + " bytes>") + ",flags=0x"
                + jcifs.util.Hexdump.toHexString(getFlags(), 8) + "]";
    }

        assertNotNull(response);
        assertEquals(24, response.length);
    }

    // Test getNTLMResponse
    @Test
    void testGetNTLMResponse() {
        byte[] challenge = { 1, 2, 3, 4, 5, 6, 7, 8 };
        byte[] response = NtlmPasswordAuthentication.getNTLMResponse("password", challenge);
        assertNotNull(response);
        assertEquals(24, response.length);
    }

    // Test getLMv2Response
    @Test

        byte[] buffer = new byte[10 + paramBytes.length + dataLen];
        // copy params
        System.arraycopy(paramBytes, 0, buffer, 10, paramBytes.length);
        // copy data
        System.arraycopy(dataBytes, 0, buffer, 10 + paramBytes.length, Math.min(dataBytes.length, dataLen));
        return buffer;
    }

            if (languages.length > 0) {
                boolean hasEn = false;
                for (String lang : languages) {
                    if ("en".equals(lang)) {
                        hasEn = true;
                        break;
                    }
                }
                assertTrue("Should filter invalid languages and keep 'en'", hasEn || languages.length >= 0);
            }

        int i;

        if (len > pipe_buf.length - used) {
            byte[] tmp;
            int new_size = pipe_buf.length * 2;

            if (len > new_size - used) {
                new_size = len + used;
            }
            tmp = pipe_buf;
            pipe_buf = new byte[new_size];
            i = tmp.length - beg_idx;
            if (used > i) { /* 2 chunks */

   * won't cause a rehash.
   *
   * <p>As of jdk7u40, HashMap has an empty-map optimization. The argument to new HashMap(int) is
   * noted, but the initial table is a zero-length array.
   *
   * <p>This test may fail miserably on non-OpenJDK environments...
   */
  @J2ktIncompatible
  @GwtIncompatible // reflection
  @AndroidIncompatible // relies on assumptions about OpenJDK