Gain insights into Gatling fundamentals, delve into advanced scripting, simulate network conditions with puppeteer and lighthouse, and set up Jenkins CI for scalable performance testing automation.

performance.tar.gz

Puppeteer

Gatling-1

Java

shell

Lighthouse

gatling-spa-run-framework

gatling-spa-run-framework-copy

Gatling

gatling-local-server

gatling-local-server-live

Almost every company in the world needs to test its scalability and performance of their products or applications.

In this course, you will learn the fundamentals of Gatling, an open-source performance testing tool that is in great demand in the software industry. You will start by learning the basics of performance testing including scalability testing and stress testing.

You will then move on to more advanced concepts such as writing Gatling scripts, understanding web page performance and simulating network throttling using puppeteer and lighthouse tools.

Lastly, you will learn to set up Continuous Integration (CI) using Jenkins for Gatling which will be useful for running tests remotely. By the end of this course, you will have some new great skills for your resume.

Performance Test Automation 101: Gatling, Lighthouse, & Jenkins

# Configuring global assertions

In addition to our earlier configurations, we can also also configure global assertions that will fail the build if not met. The Gatling simulation will not fail otherwise.

These global assertions can also be configured inside the simulation test script itself, as discussed in the [Assertions](https://www.educative.io/courses/performance-test-automation-101-gatling-lighthouse-jenkins/assertions/) lesson.

From the root page of the project, click on **"Configure"** option as shown below:

![](/api/collection/5455247108472832/5095527281590272/page/4757433877528576/image/6442908027715584)


Once done, navigate to the bottom of the page where we can find **"Post-build Actions"**.

From the **"Add post-build actions"** drop-down, select the **"Gatling Checker"** option as shown below:

![](/api/collection/5455247108472832/5095527281590272/page/4757433877528576/image/6030934764683264)


Once the option is selected, we should see the following screen from where we can add our desired global assertions.

![](/api/collection/5455247108472832/5095527281590272/page/4757433877528576/image/4679394153988096)

For the purpose of demonstration, let's add the **"Global Average Response Time Pre-warning"** option and configure as shown below:

![](/api/collection/5455247108472832/5095527281590272/page/4757433877528576/image/5627725483081728)

The above configuration ensures that the global average response time is **200 ms** or less. Otherwise, the build will be marked as **FAILURE**.

We can add multiple global assertions by clicking on the **"Add"** button.

Once done, click on the **"SAVE"** button.

# Triggering the build

Once the above configurations are set, we can now trigger the build again by clicking on the **"Build Now"** link.

As our global response time is **273 ms**, our build will be marked as **"FAILURE"**, as shown below.

![](/api/collection/5455247108472832/5095527281590272/page/4757433877528576/image/5033504342540288)

In the console of the build, we should see something like the following saying the expected and actual mismatch, hence marking the build as **FAILURE**.

```
[Gatling Check Plugin] Checking /Users/.../.jenkins/workspace/gatling-load-test/build/reports/gatling/samplesimulation-20200609211459817/js/stats.json
[Gatling Check Plugin] global ok rate metric accepted, expected = 90.000000, actual = 100.000000
ERROR: [Gatling Check Plugin] global avg response time metric unqualified, expected = 200.000000, actual = 273.000000
Build step 'Gatling Checker' changed build result to FAILURE
Archiving Gatling reports...
Adding report 'samplesimulation-20200609211459817'
Finished: FAILURE
```

![](/api/collection/5455247108472832/5095527281590272/page/4757433877528576/image/4907404706709504)


Learn how to add global assertions to our Gatling simulation Jenkins job.

Introduction

Basics of Performance Testing

Gatling: Load and Stress Testing Tool

Gatling: Script Features

Examples: Simulations Using Gatling

Web Page Performance

Network Throttling

Download Custom Gatling Test Framework

Gatling with Jenkins

Conclusion

Gatling Global Assertions

Configuring global assertions