return nil
}

// String returns the decimal representation of z.
func (z *Int) String() string {
	if z == nil {
		return "nil"
	}
	z.doinit()
	p := C.mpz_get_str(nil, 10, &z.i[0])
	s := C.GoString(p)
	C.free(unsafe.Pointer(p))
	return s
}

func (z *Int) destroy() {
	if z.init {
		C.mpz_clear(&z.i[0])
	}
	z.init = false
}

/*
 * arithmetic
 */

        assertEquals("VERSION_2", WitnessVersion.VERSION_2.toString());

        assertEquals("RESOURCE_CHANGE", WitnessEventType.RESOURCE_CHANGE.toString());
        assertEquals("CLIENT_MOVE", WitnessEventType.CLIENT_MOVE.toString());
        assertEquals("SHARE_MOVE", WitnessEventType.SHARE_MOVE.toString());
        assertEquals("IP_CHANGE", WitnessEventType.IP_CHANGE.toString());

        String[] values = { "value1" };
        RequestParameter param = new RequestParameter(null, values);

        String expected = "[null, [value1]]";
        assertEquals(expected, param.toString());
    }

    public void test_toString_withNullValues() {
        // Test toString with null values
        String name = "testParam";
        RequestParameter param = new RequestParameter(name, null);

      CacheControl
        .Builder()
        .maxAge(2, TimeUnit.DAYS)
        .build()
    assertThat(cacheControl.toString()).isEqualTo("max-age=172800")
    assertThat(cacheControl.toString()).isSameAs(cacheControl.toString())
  }

  @Test
  @Throws(Exception::class)
  fun timeDurationTruncatedToMaxValue() {
    val cacheControl =
      CacheControl
        .Builder()

    assertThat(request.url.toString()).isEqualTo("http://example.com/")
    assertThat(request.body).isNull()
  }

  @Test
  @Throws(IOException::class)
  fun put() {
    val request = fromArgs("-X", "PUT", "-d", "foo", "http://example.com").createRequest()
    assertThat(request.method).isEqualTo("PUT")
    assertThat(request.url.toString()).isEqualTo("http://example.com/")

        assertEquals(request1.hashCode(), request2.hashCode());
        assertNotEquals(request1, request3);

        // Test toString
        String toString = request1.toString();
        assertTrue(toString.contains("coordinates="));
        assertTrue(toString.contains("repositories="));
    }

    @Test
    void testRequestTraceIntegration() {
        Session session = mock(Session.class);

                Arguments.of(new byte[] { (byte) 0x7F, (byte) 0x80, (byte) 0xFF }, "7f80ff"));
    }

    // Verifies that toString() formats bytes as lower-case hex with zero-padding
    @ParameterizedTest(name = "toString renders hex for {0}")
    @MethodSource("hexCases")
    @DisplayName("toString() renders lower-case hex with zero-padding")
    void toString_rendersHex(byte[] input, String expected) {
        // Arrange

        String infoString = info.toString();
        assertTrue(infoString.contains("alloc=1000"), "toString should contain alloc");
        assertTrue(infoString.contains("free=500"), "toString should contain free");
        assertTrue(infoString.contains("sectPerAlloc=100"), "toString should contain sectPerAlloc");
        assertTrue(infoString.contains("bytesPerSect=512"), "toString should contain bytesPerSect");
    }

    }

    @Nested
    @DisplayName("toString() Tests")
    class ToStringTests {

        @Test
        @DisplayName("toString with valid data produces expected format")
        void testToStringWithValidData() {
            byte[] challenge = new byte[] { (byte) 0x01, (byte) 0x02, (byte) 0x03, (byte) 0xFF };
            UniAddress dc = mock(UniAddress.class);
            when(dc.toString()).thenReturn("SERVER123");

        // Test toString with empty string and zterm = true
        UnicodeString emptyUnicodeStringTrue = new UnicodeString("", true);
        assertEquals("", emptyUnicodeStringTrue.toString(), "toString should return empty string for empty input with zterm");

        // Test toString with empty string and zterm = false