Re: [PATCH 5/5] u-string-list: move "remove duplicates" test to "u-string-list.c"

> On Tue, Apr 22, 2025 at 10:55:23PM +0800, shejialuo wrote:
> > diff --git a/t/helper/test-string-list.c b/t/helper/test-string-list.c
> > index 262b28c599..6be0cdb8e2 100644
> > --- a/t/helper/test-string-list.c
> > +++ b/t/helper/test-string-list.c
> > @@ -1,48 +1,9 @@
> > -#define DISABLE_SIGN_COMPARE_WARNINGS
> > -
> >  #include "test-tool.h"
> >  #include "strbuf.h"
> >  #include "string-list.h"
> >  
> > -/*
> > - * Parse an argument into a string list.  arg should either be a
> > - * ':'-separated list of strings, or "-" to indicate an empty string
> > - * list (as opposed to "", which indicates a string list containing a
> > - * single empty string).  list->strdup_strings must be set.
> > - */
> > -static void parse_string_list(struct string_list *list, const char *arg)
> > -{
> > -	if (!strcmp(arg, "-"))
> > -		return;
> > -
> > -	(void)string_list_split(list, arg, ':', -1);
> > -}
> > -
> > -static void write_list_compact(const struct string_list *list)
> > -{
> > -	int i;
> > -	if (!list->nr)
> > -		printf("-\n");
> > -	else {
> > -		printf("%s", list->items[0].string);
> > -		for (i = 1; i < list->nr; i++)
> > -			printf(":%s", list->items[i].string);
> > -		printf("\n");
> > -	}
> > -}
> > -
> >  int cmd__string_list(int argc, const char **argv)
> >  {
> > -	if (argc == 3 && !strcmp(argv[1], "remove_duplicates")) {
> > -		struct string_list list = STRING_LIST_INIT_DUP;
> > -
> > -		parse_string_list(&list, argv[2]);
> > -		string_list_remove_duplicates(&list, 0);
> > -		write_list_compact(&list);
> > -		string_list_clear(&list, 0);
> > -		return 0;
> > -	}
> > -
> >  	if (argc == 2 && !strcmp(argv[1], "sort")) {
> >  		struct string_list list = STRING_LIST_INIT_NODUP;
> >  		struct strbuf sb = STRBUF_INIT;
> 
> I'm a bit surprised that the patch series stops after this patch given
> that the only remaining subcommand is "sort". Is there a specific reason
> why you don't also convert that function? If you did we could declare
> victory by deleting the whole "test-helper string-list" subcommand.
> 

> It seems that the only reason is p0071, where we benchmark performance
> of sorting. I dunno... that one is of course not a good fit for our unit
> testing framework. But it's a bit sad that we cannot remove the whole
> infra only because of a performance test that nobody ever runs in the
> first place.
>