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Comparing Two Timestamps In Loadrunner 2017-12-07

Working with timestamps in loadrunner

  1. admin
    Sometime you get into a situation where you need to compare time between two clicks or compare the current timestamp with a server retured value in loadrunner. In this tutorial we have illustrated how you can compare current timestamp with the time on which the tutorial was written.

    Attached is a working sample loadrunner script which you can play as a example.

    Loadrunner Code:

      // The "calendar time" structure has the following members
      struct tm {
        int tm_sec; // seconds after the minute - [0,59]
        int tm_min; // minutes after the hour - [0,59]
        int tm_hour; // hours since midnight - [0,23]
        int tm_mday; // day of the month - [1,31]
        int tm_mon; // months since January - [0,11]
        int tm_year; // years since 1900
        int tm_wday; // days since Sunday - [0,6]
        int tm_yday; // days since January 1 - [0,365]
        int tm_isdst; // daylight savings time flag
      int rc; // return code
      struct tm date1;
      struct tm date2;
      long time_difference; // the number of time ticks (seconds) that separate date1 and date2.
      int days, hours, minutes, seconds;
      int mock_time_difference = 0;
      // Save example dates to a parameter. In real life, you might
      // capture these values using web_reg_save_param or similar.
      // date format: mm/dd/yyyy hh:mm:ss
      //Param_Date1 - Date of creating this tutorial on www.speforums.com
      lr_save_string("07/12/2017 23:01:00", "Param_Date1");
      //Param_Date2 - Current Timestamp
      lr_save_datetime("%d/%m/%Y %H:%M:%S", DATE_NOW, "Param_Date2"); 
      // Read the values from the string into the date variables
      rc = sscanf(lr_eval_string("{Param_Date1}"), "%d/%d/%d %d:%d:%d", &date1.tm_mon, &date1.tm_mday, &date1.tm_year, &date1.tm_hour, &date1.tm_min, &date1.tm_sec);
      if (rc != 6) {
          lr_error_message("Problem reading date format. Expected 6 values in string, but found %d", rc);
      // As the "calendar time" structure defines tm_year as "years since 1900" and
      // tm_mon as "months since January", we must "fix" these values in the structure.
      date1.tm_mon = date1.tm_mon - 1;
      date1.tm_year = date1.tm_year - 1900;
      // Repeat the above steps for Date2
      rc = sscanf(lr_eval_string("{Param_Date2}"), "%d/%d/%d %d:%d:%d", &date2.tm_mon, &date2.tm_mday, &date2.tm_year, &date2.tm_hour, &date2.tm_min, &date2.tm_sec);
      if (rc != 6) {
          lr_error_message("Problem reading date format. Expected 6 values in string, but found %d", rc);
      date2.tm_mon = date2.tm_mon - 1;
      date2.tm_year = date2.tm_year - 1900;
      // Use mktime() to convert the "calendar time" structure to time ticks.
      // Even though this function is not in the VuGen function reference, it is still available to use.
      // Note that Unix time ticks are defined between 1/Jan/1970 and
      // 19/Jan/2038, so odd things may happen with dates outside these ranges.
      time_difference = mktime(&date2) - mktime(&date1);
      lr_output_message("Total number of seconds difference: %d", time_difference);
      // Calculate time difference in days, hours, minutes and seconds.
      days = time_difference/86400;
      time_difference = time_difference - (days * 86400);
      hours = time_difference/3600;
      time_difference = time_difference - (hours * 3600);
      minutes = time_difference/60;
      time_difference = time_difference - (minutes * 60);
      seconds = time_difference;
      lr_output_message("Days: %d, Hours: %d, Minutes: %d, Seconds: %d", days, hours, minutes, seconds);
      return 0;
    Output :


    Other examples - https://speforums.com/resources/loadrunner-function-to-write-current-system-time.68/