Run a test load data from script calling processor

this is a modified version of the 'test load 20 records' ui action
create this as a copy
in the condition, add a condition to restrict it to the data source in question
in this example a file import

instead of having to redirect to the sys_import.do java processor, this can be done in script as follows:
(instance calls itself via httprequest to access the processor, this can enable users without permissions but who can see the UI action to perform a test load on the data source with the file attached)
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current.update();

 //--below is OOTB code, commented out but principles reused

/*var redirectStr = "sys_import.do?"; // the URI

redirectStr += "import_source=data_source"; // this is a Data Source import

redirectStr += "&sysparm_data_source=" + current.sys_id; // the sys_id of this

redirectStr += "&sysparm_tablename=" + current.import_set_table_name; // always create the same test

redirectStr += "&sysparm_recreate_table=false"; // we dont want to overwrite existing

redirectStr += "&sysparm_tablelabel=" + current.name;

redirectStr += "&create_new_module=ON";

redirectStr += "&sysparm_extends=sys_import_set_row"; // always extends this

redirectStr += "&selected_application=import_sets";

redirectStr += "&sysparm_default_state=test";

redirectStr += "&max_rows=2"; // change this number if you want more test rows*/

try{

           

            var url='https://<your_instance>.service-now.com/'+'sys_import.do';

//--credentials must correspond to a user with the correct permissions e.g. rest_service, within SN

            var request=new GlideHTTPRequest(url);

            request.setBasicAuth("servicenowuser", "servicenowpwd");

            request.addHeader('Accept', 'application/json');

            request.addParameter('import_source', 'data_source');

            request.addParameter('sysparm_data_source', current.sys_id);

            request.addParameter('sysparm_tablename', current.import_set_table_name);

            request.addParameter('sysparm_recreate_table', 'false');

            request.addParameter('create_new_module', 'ON');

            request.addParameter('sysparm_extends', 'sys_import_set_row');

            request.addParameter('selected_application', 'import_sets');

            request.addParameter('sysparm_default_state', 'test');

            request.addParameter('max_rows', '2');

            var response=request.get();

            gs.log('TESTRESP:' + response.getStatusCode(), 'processorresp');

           

          

           

           

}catch (ex){

            gs.addInfoMessage('error');

            gs.log(ex.toString(), 'processorErr');

} 

var info = "Test loading 2 rows - ";

info += "<a style='text-decoration:underline;color:blue' href=sys_data_source.do?sys_id=" + current.sys_id + ">Return to data source</a><img width='3' src='images/s.gif'/>";

gs.addInfoMessage(info + '---TEST');

action.setRedirectURL(current);