Re: [Qemu-devel] [PATCH v2 2/2] acpi-test: issue errors instead of warnings when possible

["Michael S. Tsirkin" <mst@redhat.com>]

On Mon, Feb 24, 2014 at 02:09:18PM +0200, Marcel Apfelbaum wrote:
> If the expected (offline) acpi tables loaded correctly,
> it is safe to assume the iasl installation is OK and
> issue an error if the actual tables differ from expected
> ones.
> 
> Signed-off-by: Marcel Apfelbaum <marcel.a@redhat.com>

I'm not sure I agree with this one.
It turned out to be too aggressive in the past
as expected files get out of sync sometimes.
What I would do is this:
	if IASL did not produce errors or warnings
	on expected files, it should not produce
	them on actual files either.



> ---
>  tests/acpi-test.c | 24 ++++++++++++++++--------
>  1 file changed, 16 insertions(+), 8 deletions(-)
> 
> diff --git a/tests/acpi-test.c b/tests/acpi-test.c
> index 2ce8c18..639b3ab 100644
> --- a/tests/acpi-test.c
> +++ b/tests/acpi-test.c
> @@ -411,7 +411,7 @@ static bool compare_signature(AcpiSdtTable *sdt, uint32_t signature)
>     return sdt->header.signature == signature;
>  }
>  
> -static void load_asl(GArray *sdts, AcpiSdtTable *sdt)
> +static bool load_asl(GArray *sdts, AcpiSdtTable *sdt)
>  {
>      AcpiSdtTable *temp;
>      GError *error = NULL;
> @@ -440,18 +440,22 @@ static void load_asl(GArray *sdts, AcpiSdtTable *sdt)
>      g_string_append_printf(command_line, "-d %s", sdt->aml_file);
>  
>      /* pass 'out' and 'out_err' in order to be redirected */
> -    g_spawn_command_line_sync(command_line->str, &out, &out_err, NULL, &error);
> +    ret = g_spawn_command_line_sync(command_line->str, &out, &out_err, NULL, &error);
>      g_assert_no_error(error);
>  
> -    ret = g_file_get_contents(sdt->asl_file, (gchar **)&sdt->asl,
> -                              &sdt->asl_len, &error);
> -    g_assert(ret);
> -    g_assert_no_error(error);
> -    g_assert(sdt->asl_len);
> +    if (ret) {
> +        ret = g_file_get_contents(sdt->asl_file, (gchar **)&sdt->asl,
> +                                  &sdt->asl_len, &error);
> +        g_assert(ret);
> +        g_assert_no_error(error);
> +        g_assert(sdt->asl_len);
> +    }
>  
>      g_free(out);
>      g_free(out_err);
>      g_string_free(command_line, true);
> +
> +    return !ret;
>  }
>  
>  #define COMMENT_END "*/"
> @@ -518,6 +522,7 @@ static void test_acpi_asl(test_data *data)
>      int i;
>      AcpiSdtTable *sdt, *exp_sdt;
>      test_data exp_data;
> +    gboolean err;
>  
>      memset(&exp_data, 0, sizeof(exp_data));
>      exp_data.tables = load_expected_aml(data);
> @@ -531,7 +536,7 @@ static void test_acpi_asl(test_data *data)
>          load_asl(data->tables, sdt);
>          asl = normalize_asl(sdt->asl);
>  
> -        load_asl(exp_data.tables, exp_sdt);
> +        err = load_asl(exp_data.tables, exp_sdt);
>          exp_asl = normalize_asl(exp_sdt->asl);
>  
>          if (g_strcmp0(asl->str, exp_asl->str)) {
> @@ -543,6 +548,9 @@ static void test_acpi_asl(test_data *data)
>                      (gchar *)&exp_sdt->header.signature,
>                      sdt->asl_file, sdt->aml_file,
>                      exp_sdt->asl_file, exp_sdt->aml_file);
> +            if (!err) { /* expected data loaded, iasl OK */
> +                g_assert(false);
> +            }
>          }
>          g_string_free(asl, true);
>          g_string_free(exp_asl, true);
> -- 
> 1.8.3.1