tests: acpi: report names of expected files in verbose mode

print expected file name if it doesn't exists if
verbose mode is enabled*. It helps to avoid running
bios-tables-test under debugger to figure out missing
file name.

*)
verbose mode is enabled if "V" env. variable is set
Signed-off-by: NIgor Mammedov <imammedo@redhat.com>
Reviewed-by: NMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
Reviewed-by: NMarcel Apfelbaum <marcel@redhat.com>
Reviewed-by: NMarcel Apfelbaum <marcel@redhat.com>

tests/bios-tables-test.c

@@ -464,7 +464,6 @@ static GArray *load_expected_aml(test_data *data)
 {
     int i;
     AcpiSdtTable *sdt;
-    gchar *aml_file = NULL;
     GError *error = NULL;
     gboolean ret;
 
@@ -472,6 +471,7 @@ static GArray *load_expected_aml(test_data *data)
     for (i = 0; i < data->tables->len; ++i) {
         AcpiSdtTable exp_sdt;
         uint32_t signature;
+        gchar *aml_file = NULL;
         const char *ext = data->variant ? data->variant : "";
 
         sdt = &g_array_index(data->tables, AcpiSdtTable, i);
@@ -484,13 +484,21 @@ static GArray *load_expected_aml(test_data *data)
 try_again:
         aml_file = g_strdup_printf("%s/%s/%.4s%s", data_dir, data->machine,
                                    (gchar *)&signature, ext);
-        if (data->variant && !g_file_test(aml_file, G_FILE_TEST_EXISTS)) {
-            g_free(aml_file);
+        if (getenv("V")) {
+            fprintf(stderr, "\nLooking for expected file '%s'\n", aml_file);
+        }
+        if (g_file_test(aml_file, G_FILE_TEST_EXISTS)) {
+            exp_sdt.aml_file = aml_file;
+        } else if (*ext != '\0') {
+            /* try fallback to generic (extention less) expected file */
             ext = "";
+            g_free(aml_file);
             goto try_again;
         }
-        exp_sdt.aml_file = aml_file;
-        g_assert(g_file_test(aml_file, G_FILE_TEST_EXISTS));
+        g_assert(exp_sdt.aml_file);
+        if (getenv("V")) {
+            fprintf(stderr, "\nUsing expected file '%s'\n", aml_file);
+        }
         ret = g_file_get_contents(aml_file, &exp_sdt.aml,
                                   &exp_sdt.aml_len, &error);
         g_assert(ret);