assertEquals(Byte.valueOf("1"), NumberConversionUtil.convertNumber(Byte.class, "1"));
    }

    /**
     * @throws Exception
     */
    public void testConvertNumber_primitiveWrapper() throws Exception {
        assertEquals(Byte.valueOf("1"), NumberConversionUtil.convertPrimitiveWrapper(byte.class, "1"));
        assertEquals(Byte.valueOf("0"), NumberConversionUtil.convertPrimitiveWrapper(byte.class, null));

        // Test negative values - should throw NullPointerException in private method via BigInteger.valueOf
        try {
            MemoryUtil.byteCountToDisplaySize(-1L);
            // If no exception, verify it handles negative as expected
        } catch (Exception e) {
            // Expected for negative values
        }

        // Test boundary values

  private static class IntHolder implements Serializable {
    private int value;

    IntHolder(int value) {
      this.value = value;
    }

    @Override
    public boolean equals(@Nullable Object o) {
      return (o instanceof IntHolder) && ((IntHolder) o).value == value;
    }

    @Override
    public int hashCode() {
      return value;
    }

        };
        assertEquals(Long.valueOf(31556926000L), yearEnv.getTimeAdjustTimeMillisAsLong());

        // Test maximum long value
        FessEnv.SimpleImpl maxEnv = new FessEnv.SimpleImpl() {
            protected Properties prepareProperties() {
                Properties props = new Properties();
                props.setProperty(FessEnv.TIME_ADJUST_TIME_MILLIS, String.valueOf(Long.MAX_VALUE));
                return props;

      CountingRemovalListener<String, Integer> removalListener) {

    for (int i = 0; i < 10; i++) {
      assertEquals(Integer.valueOf(VALUE_PREFIX + i), cache.getUnchecked(KEY_PREFIX + i));
    }

    for (int i = 0; i < 10; i++) {
      loader.reset();
      assertEquals(Integer.valueOf(VALUE_PREFIX + i), cache.getUnchecked(KEY_PREFIX + i));
      assertFalse("Creator should not have been called @#" + i, loader.wasCalled());
    }

  /** Previous version of BigIntegerMath.factorial, kept for timing purposes. */
  private static BigInteger oldSlowFactorial(int n) {
    if (n <= 20) {
      return BigInteger.valueOf(LongMath.factorial(n));
    } else {
      int k = 20;
      return BigInteger.valueOf(LongMath.factorial(k)).multiply(oldSlowFactorial(k, n));
    }
  }

  /** Returns the product of {@code n1} exclusive through {@code n2} inclusive. */

      String str = String.valueOf(c);
      assertEquals(str, c, Ascii.toLowerCase(c));
      assertEquals(str, c, Ascii.toUpperCase(c));
      assertFalse(str, Ascii.isLowerCase(c));
      assertFalse(str, Ascii.isUpperCase(c));
    }
  }

  public void testCharsLower() {
    for (char c : LOWER.toCharArray()) {
      String str = String.valueOf(c);
      assertTrue(str, c == Ascii.toLowerCase(c));

      String str = String.valueOf(c);
      assertEquals(str, c, Ascii.toLowerCase(c));
      assertEquals(str, c, Ascii.toUpperCase(c));
      assertFalse(str, Ascii.isLowerCase(c));
      assertFalse(str, Ascii.isUpperCase(c));
    }
  }

  public void testCharsLower() {
    for (char c : LOWER.toCharArray()) {
      String str = String.valueOf(c);
      assertTrue(str, c == Ascii.toLowerCase(c));

   *
   * @since 8.0
   */
  public static final byte DEL = 127;

  /**
   * The minimum value of an ASCII character.
   *
   * @since 9.0 (was type {@code int} before 12.0)
   */
  public static final char MIN = 0;

  /**
   * The maximum value of an ASCII character.
   *
   * @since 9.0 (was type {@code int} before 12.0)
   */
  public static final char MAX = 127;

/**
 * @author higa
 *
 */
public class IntegerConversionUtilTest extends TestCase {

    /**
     * @throws Exception
     */
    public void testToInteger() throws Exception {
        assertEquals(Integer.valueOf("1000"), IntegerConversionUtil.toInteger("1,000"));
    }

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