WL#15440 MySQL REST Service (MRS) - Umbrella WL

Fix for MRSConfigErrorTest.metadata_refresh_interval_nan
failing on some platforms.

Unified how "nan" passed as a double option is handled
across the platforms.

Change-Id: I13ad9791e56919862431365d08536cb398c5f404

Author: Andrzej Religa

router/src/harness/src/config_option.cc

@@ -25,6 +25,7 @@
 
 #include "mysql/harness/config_option.h"
 
+#include <cmath>
 #include <sstream>
 #include <stdexcept>
 
@@ -39,7 +40,7 @@ double option_as_double(const std::string &value,
   ss.imbue(std::locale("C"));
   double result = 0.0;
   if (!(ss >> result) || !ss.eof() || (result < min_value - 0.0001) ||
-      (result > max_value + 0.0001)) {
+      (result > max_value + 0.0001) || std::isnan(result)) {
     std::stringstream os;
     os << option_name << " needs value between " << min_value << " and "
        << max_value << " inclusive";

router/tests/component/test_config.cc

@@ -802,15 +802,26 @@ INSTANTIATE_TEST_SUITE_P(
                              {"metadata_refresh_interval", "0"}},
                             "main ERROR .* Error: `metadata_refresh_interval` "
                             "option, must be greater than zero."),
-        MRSConfigErrorParam("metadata_refresh_interval_nan",
-                            {{"mysql_user", "mysql_user_mrs"},
-                             {"mysql_read_write_route", "rw"},
-                             {"mysql_read_only_route", "ro"},
-                             {"router_id", "1"},
-                             {"metadata_refresh_interval", "nan"}},
-                            "main ERROR .* Error: `metadata_refresh_interval` "
-                            "option, must be greater than zero."),
-
+        MRSConfigErrorParam(
+            "metadata_refresh_interval_nan",
+            {{"mysql_user", "mysql_user_mrs"},
+             {"mysql_read_write_route", "rw"},
+             {"mysql_read_only_route", "ro"},
+             {"router_id", "1"},
+             {"metadata_refresh_interval", "nan"}},
+            "Configuration error: option metadata_refresh_interval in "
+            "\\[mysql_rest_service\\] needs value between 0 and "
+            "1\\.79769e\\+308 inclusive, was 'nan'"),
+        MRSConfigErrorParam(
+            "metadata_refresh_interval_foo",
+            {{"mysql_user", "mysql_user_mrs"},
+             {"mysql_read_write_route", "rw"},
+             {"mysql_read_only_route", "ro"},
+             {"router_id", "1"},
+             {"metadata_refresh_interval", "foo"}},
+            "Configuration error: option metadata_refresh_interval in "
+            "\\[mysql_rest_service\\] needs value between 0 and "
+            "1\\.79769e\\+308 inclusive, was 'foo'"),
         MRSConfigErrorParam("unknown_option",
                             {{"mysql_user", "mysql_user_mrs"},
                              {"mysql_read_write_route", "rw"},