Performance test - LoadRunner obtains the return value and user-defined parameters (parameter operation)

example ：

Mobile terminal operation ,A Added an event （ Return results ： event id, for example ：1）,A At this time, you need to get the newly generated events id, And pass it as a parameter , To report this incident to B（ Return results ： event id unchanged , step id It's an event id Add 1）,B You need to get the events returned from the report id And steps id To handle this matter .

One method ：

If two return id All in loadrunner The return result shows （view-Test Results perhaps Tree You can view ）：

You can use web_reg_save_param The function passes through the left and right boundary values , Locate what you need id, And then assign it directly to a variable , Then the next step is to call this variable directly

for example ：

web_reg_save_param("sid",
"LB=aaa\":",
"RB=bbb",
LAST);

The above example means that the left boundary aaa”: And the right border bbb The middle value is assigned to the variable sid. Be careful ： Escape when there are double quotation marks on the left and right boundaries , Escape character ：\

Loadrunner Cannot call directly in sid, With braces , for example :{sid}

Two methods ：

If two return id Step 2 id be not in loadrunner The return result shows ：

At this time, we can use the mobile packet capturing tool to assist us in testing , Find two id The relationship between .

As the title says ： step id= event id+1

At this time, we can find out the event through a method id The assignment is sid, And then through lr_output_message Function print out ：

for example ：

 lr_output_message ( "id: %s", lr_eval_string ( "{sid}" ) );

And then through atoi Function to sid Add 1

for example ：

atoi(lr_eval_string("{sid}"))+1;

Finally, directly atoi(lr_eval_string("{sid}"))+1 Just assign the value of to a variable

Be careful when defining variables ：

All declarations should be placed in front of the script

Knowledge point ：

1、atoi function ： String reshaping

2、 Encountered double quotation marks to escape when getting the return value

3、web_reg_save_param The return values obtained by the function are all strings , If you want to perform an arithmetic operation , You need to type the obtained value now