// Test boundary values
        assertEquals("1bytes", MemoryUtil.byteCountToDisplaySize(1L));
        assertEquals("999bytes", MemoryUtil.byteCountToDisplaySize(999L));

        // Test very large values close to EB boundary
        assertEquals("1.024EB", MemoryUtil.byteCountToDisplaySize(FileUtils.ONE_EB));

        // Test exact thresholds
        assertEquals("1.024KB", MemoryUtil.byteCountToDisplaySize(1024L));