LoadRunner Tutorial

4

Playing Back Your Script

By recording a set of typical user actions such as booking a flight, you

created a real user emulation. You replay your recorded script to verify that

it runs properly before you incorporate it into a load testing scenario.

During replay, you can view the actions in a browser and see if everything is

as you expect it be. If the script doesn’t replay properly, you may need to

add correlations, as described in Lesson 5, “Solving Common Playback

Problems.”

Before replaying the script, you can configure run-time settings, which help

you set the behavior of the Vuser.

In this lesson you will cover the following topics:

➤How do I set the run-time behavior?

➤How do I watch my script running in real time?

➤Where can I view information about the replay?

➤How do I know if my test passed?

➤How do I search in or filter the results?

How do I set the run-time behavior?

LoadRunner Run-Time settings let you emulate different kinds of real user

activity and behavior. For example, you could emulate a user who responds

immediately to output from the server, or a user who stops and thinks

before each response. You can also configure run-time settings to specify

how many times the Vuser should repeat a set of actions and how often.

The Log settings indicate how much information to log while running the

test. During development, you may choose to enable some logging for

debugging purposes, but once you verify that your script is functional, you

can enable logging for errors only or disable it.

Select Extended log and enable Parameter substitution. This option will be

relevant for the following lesson at which point it will discussed.

5 View the Think Time settings.

Select the Think Time node.

Do not make any changes. You will set the think-time from the Controller.

Keep in mind that when you run the script in VuGen, it will run quickly

since it will not include think-time.

6 Click OK to close the Run-Time Settings dialog box.

How do I watch my script running in real time?

VuGen’srun-time viewer feature displays the Vuser activities in real time as

you playback the recorded script.

By default, VuGen runs your test in the background, without displaying an

animation of the actions in your script. For this tutorial, however, you will

instructVuGen to display the actions in a viewer that lets you see how

VuGen executes each step. The viewer is not an actual browser—it only

displays snapshots of the pages that are returned to the Vuser.

Where can I view information about the replay?

When the script stops running, you can view a summary of the replay in the

wizard. Clic

The Last Replay Summary, lists any errors that may have been detected and

displays thumbnails of the Recording and Replay snapshots. You can

compare snapshots and look for discrepancies between your recording and

the replay.

You can also look at the Vuser’s activity by reviewing a textual summary of

the events. VuGen’sReplay Log tab in the Output window shows this colorcoded

information.

How do I know if my test passed?

After you playback the events that you recorded, you need to look at the

results and see if everything succeeded. If something failed, you want to

know why and when it failed.

In this section you will view and analyze the results of your script run.

VuGen summarizes the results of the replay in the Test Results window.

To view test results:

1 Click Verify Replay in the Task pane to return to the wizard.

2 Click the visual test results hyperlink in the instruction pane under the

heading: “Verification”. Alternatively choose View > Test Results. A new

results window opens.

 

When the Test Results window first opens, it contains two panes: Tree pane

(on the left) and Summary pane (on the right).

The Tree pane contains the results tree. Each iteration is numbered. The

Summary pane contains the details of the test.

The top table indicates which iterations passed and which failed. The test is

considered to have passed when VuGen’sVuser successfully navigates

through the HP Tours site according to the original recording.

The bottom table indicates whether transactions and checkpoints passed or

failed. You will add these features to your test later on in the tutorial.

In the next section, you will drill down into the test results to determine if

the script reached the intended Web pages during replay.

How do I search in or filter the results?

If your test results indicate that something failed, you can drill down and

locate the point of failure.

In the Test Results window, you can expand the test tree and view the results

of each step separately. The Test Results window shows a snapshot of the

replay during that iteration.

1 Expand an iteration branch.

Expand the branch Iteration 1 and then expand the Action Summary

branch in the left pane by clicking the plus sign. The expanded branch now

shows a list of the steps performed in that iteration.