// Assert
        verify(signingDigest, times(1)).sign(testData, offset, length, request, response);
    }

    @Test
    @DisplayName("Test sign method with different offsets")
    void testSignWithDifferentOffsets() {
        // Arrange
        byte[] largeData = new byte[100];
        for (int i = 0; i < largeData.length; i++) {
            largeData[i] = (byte) i;
        }

        // Test with different offsets