// Test StrBegin function
    bool test_str_begin(void) {
    WriteFmt("Testing StrBegin\n");
    
    Str s = StrInitFromZstr("Hello");

    
    // Get a pointer to the first character using StrBegin
    char *begin = StrBegin(&s);
    
    // Check that the pointer is correct

    
    case STR_BEGIN : {
    char *begin = StrBegin(str);
    (void)begin; // Suppress unused variable warning
    break;