Re: [kvm-unit-tests PATCH] s390x: Add strict mode to specification exception interpretation test

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On Fri, 25 Feb 2022 18:23:55 +0100
Janis Schoetterl-Glausch <scgl@xxxxxxxxxxxxx> wrote:

> While specification exception interpretation is not required to occur,
> it can be useful for automatic regression testing to fail the test if it
> does not occur.
> Add a `--strict` argument to enable this.
> `--strict` takes a list of machine types (as reported by STIDP)
> for which to enable strict mode, for example
> `--strict 8562,8561,3907,3906,2965,2964`
> will enable it for models z15 - z13.
> Alternatively, strict mode can be enabled for all but the listed machine
> types by prefixing the list with a `!`, for example
> `--strict !1090,1091,2064,2066,2084,2086,2094,2096,2097,2098,2817,2818,2827,2828`
> will enable it for z/Architecture models except those older than z13.
> 
> Signed-off-by: Janis Schoetterl-Glausch <scgl@xxxxxxxxxxxxx>
> ---

[...]

> +static bool parse_strict(int argc, char **argv)
> +{
> +	uint16_t machine_id;
> +	char *list;
> +	bool ret;
> +
> +	if (argc < 1)
> +		return false;
> +	if (strcmp("--strict", argv[0]))
> +		return false;
> +
> +	machine_id = get_machine_id();
> +	if (argc < 2) {
> +		printf("No argument to --strict, ignoring\n");
> +		return false;
> +	}
> +	list = argv[1];
> +	if (list[0] == '!') {
> +		ret = true;
> +		list++;
> +	} else
> +		ret = false;
> +	while (true) {
> +		long input = 0;
> +
> +		if (strlen(list) == 0)
> +			return ret;
> +		input = strtol(list, &list, 16);
> +		if (*list == ',')
> +			list++;
> +		else if (*list != '\0')
> +			break;
> +		if (input == machine_id)
> +			return !ret;
> +	}
> +	printf("Invalid --strict argument \"%s\", ignoring\n", list);
> +	return ret;
> +}

probably I should write a few parsing functions for command line
arguments, so we don't have to re-invent the wheel every time

> +
>  int main(int argc, char **argv)
>  {
>  	if (!sclp_facilities.has_sief2) {
> @@ -76,7 +121,7 @@ int main(int argc, char **argv)
>  		goto out;
>  	}
>  
> -	test_spec_ex_sie();
> +	test_spec_ex_sie(parse_strict(argc - 1, argv + 1));

hmmm... maybe it would be more readable and more uniform with the other
tests to parse the command line during initialization of the unit test,
and set a global flag.

>  out:
>  	return report_summary();
>  }
> 
> base-commit: 257c962f3d1b2d0534af59de4ad18764d734903a




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