Performance Testing Using Locust 1.0

Name: Performance Testing Using Locust 1.0
Rating: 4.0 (953 reviews)

Learn Python based Modern Load Testing Framework !

Created byAnuradha Agarwal

Last updated 7/2020

English

What you'll learn

Performance Testing with Locust
Set up locust environment - standalone, distributed from scratch as well as using docker
Feeding data, handling dynamic data in request, cookie handling ,nesting requests
API Testing using Locust
Logging & Error Handling
Working with events - test non-http clients, send data to InfluxDB
Understand Report

Course content

8 sections • 59 lectures • 7h 17m total length

Introduction2:27
Set up a development environment for Locust performance testing by installing Python and PyCharm, creating a project, and installing the Locust module, then run an example script to verify readiness.
Install Python2:56
Install Python 3.8.3 on windows (information for mac as well)
Install Locust on Windows | Install Pycharm7:07
Install Locust on windows (information for mac as well)
https://www.qamilestone.com/post/setup-locust-on-linux-on-windows
Use Idle. Run the sample script.
Install Pycharm
Create Locust Project in Pycharm | Run Example Script6:46
Create a project in Pycharm
Install Locust in Project environment
Run Sample Script
View Locust web interface
Create Locust environment on Linux10:16
Install Python 3.8.3 on Linux
https://www.qamilestone.com/post/steps-to-setup-python-3-8-on-linux
Create a virtual environment for Python 3.8.3
Install latest Locust version on top of Python 3.8.3
https://www.qamilestone.com/post/steps-to-setup-locust-on-linux
Copy & run sample script

Introduction1:36
Create basic Locust Script | User class | wait_time | @task8:19
Create basic Locust Script:
Create class inheriting locust User class
add wait_time
add task using task decorator
Add host attribute | HTTPUser class4:39
Inherit HTTPUser class & add host attribute in different ways
Locust inbuilt wait_time methods5:38
example & explanation for locust inbuilt wait functions between, constant, constant_pacing
Multiple user classes | weight attribute3:59
Add multiple classes to a locust script and weight attribute
Run options for commandline1:31
Explore Locust command line options and help, learn to run tests in headless mode, and define users, hash rate, runtime, and log file for performance testing.
Running test in headless mode -define users, hatch rate ,time of run ,logfile3:16
--headless, -u,-r,-t , --logfile commandline option example
Add on_start | on_stop methods4:47
Add test_start | test_stop methods5:32

Declaring tasks with decorator | Define task weight4:10
Example & explanation for task decorator . Define the execution ratio for tasks using weight.
Declaring tasks with tasks attribute | Define task weight3:03
Declaring Tasks inside TaskSet Class5:15
Create TaskSet class separately or inline with the User class and define tasks within.
Sequential Tasksets5:26
Nested TaskSets4:39
self.Interrupt4:55
Use self.interrupt to exit a nested task set and trigger rescheduling to other modules in locust, while defining per-task weightage in cart and product modules to balance execution.

HTTP GET request | client attribute | name request4:35
Create the first HTTP GET request and understand client attributes. Give a customized name to request in locust metrics.
HTTP POST request5:18
Learn how to use the http post method to log in to tools.demo.com by sending username and password to login.php and inspecting the request in developer tools, for Locust 1.0.
Extract Response Data3:35
Learn to extract response data from Locust requests using the response object, print status code and headers, and verify sequential tasks (launch URL then login) to assess script outcomes.
Verify Response with catch_response6:12
Assignment - Create Script for Complete Booking Flow3:15
Complete flight booing flow using http post & verify response using catch_response=True
Session Management1:51
Manage session using cookies15:08
Retrieve cookie from a response and send it in the next task.
Assignment - Cookie Handling1:50
Copy the basic underscore cookie to an assignment cookie, then retrieve the session ID and user filter ID from login and pass both cookies in the auto code request.
Extract Data from Response Body8:18
Extract data using regex and pass to subsequent request
Assignment - Complete Autoquote Workflow6:35
Complete the auto quote workflow by recording and validating each request with cookies, form data, and viewstate, using developer tools to observe post and get calls and responses.
Assignment - Complete Agent Lookup Workflow4:21
Complete the agent lookup workflow using Locust, extracting cookies (including session id) and viewstate, converting form data to Python dict, and validating responses across login and search steps.
Nested Tasks with HTTP requests18:56
Create Taskset subclasses to main Taskset class to get close to a real-world scenarios where websites are divided into modules.
Testing API- Working with JSON data12:33
Create a script for REST API by sending JSON data format and receiving JSON response
Assignment - REST API Script - Complete Flow1:13

Parametrize test using external module15:43
Run script with multiple different users in 2 ways.
Parametrize test using csv12:26
Fetch user data from csv
Assignment - Parametrize Borland Nested Task Script Using CSV2:25
Parametrize the borland nested task script for performance testing by reading four user credentials from a csv via csv_utility and using Locust 1.0 to run with those users.
Linear Vs Step Load Model11:03
Explore linear vs step load models in locust, showing how total users, spawn rate, and step duration shape ramp-up in ui and headless modes for performance testing.
Distributed Work Load - Intro , Single Machine, expect-workers10:35
Reading options from configuration file7:43
Make script OS independent with os module11:15
Learn to make a locust script os independent using the os module, dynamic root path, and join to handle data and config folders with yaml configuration.
Logging11:46
Exit User / Test on Failure6:56
Locust Distributed Environment - Multiple machines19:27
Set up a distributed Locust environment on three Linux machines (master and two workers), install Python 3.8, create virtual environments, and run a 60-second headless test from GitHub.
Run Locust Test using Docker18:16
Locust with docker-compose9:50

Introduction1:57
Explore the Locust performance testing interface, run tests with a modified script, monitor statistics, and observe how failures are reported in the web interface.
Run Test -Number of Users, Hatch Rate & Host1:53
Explore Locust 1.0 load test by configuring number of users, hatch rate, and host to control linear ramp-up, run swarm tests, and analyze the generated statistics.
Understand Statistics & Charts - Min,Max, Avg.,Median,Percentile14:32
Explore how to interpret performance data in Locust by analyzing min, max, average, median, and percentile metrics with real-time statistics, charts, and outlier considerations.
Understand Statistics & Charts - RPS, Number of Users,Average Size4:49
Explore how requests per second (RPS) and user counts drive performance insights in Locust, and analyze average size, response time, and chart data for performance testing.
Retrieve test statistics in CSV format3:05
Learn to retrieve locust test statistics in csv format by configuring csv downloads, the distribution and request csv files, and the interval and runtime options during test runs.

Understanding Event Hooks14:44
Discover how locust uses event hooks to listen for and fire events, attach handlers, and customize behavior with custom events for extensible performance testing.
Assignment- Print individual request data using event2:37
Create two custom event handlers for request_success and request_failure in Locust to print per-request data to the console, including metadata such as request type, name, length, and exception.
Assignment Solution .Bonus-Send data to csv11:37
Learn to implement Locust performance tests with success and failure handlers, print and format per-request data, then accumulate and export results to CSV.
Send data to InfluxDB using locust event & python InfluxDB client18:55

Introduction11:06
Modularization along with time & event wrapper13:41
modularize the Locust framework by splitting into three scripts: a custom client with protocol methods and a time-measure decorator that fires events, plus a dedicated Locust file to orchestrate them.
Assignment- Create locust script for ftp protocol5:27
Create a Locust-based ftp performance test using a Python ftp client to connect to an ftp server, log in, change to the target directory, retrieve readme.txt, and disconnect.
Assignment-Solution-FTP Client Locust Script6:08
Learn how to implement a simple FTP client Locust script to connect, login, download a file, and disconnect, with welcome and login verifications and basic error handling.

Requirements

You can have any basic programming background
You really don't need to know Python for this course as we will tell you what is required but eventually you would like to learn this most popular language with so many sources around.

Description

Hello,

It's time to swarm your application by modern load testing framework - Locust!

It's easy to start & quick to understand. It simply figures out how many concurrent users an application handle. It is supported by the most popular language python which makes it highly flexible!

It offers highly scalable and distributed testing and all this comes at no cost! There is no reason why you should not learn this light & yet highly powerful tool. It could be an effective tool for both developers & testers.

Here in this course, I will take you through deeper sections of the tool and make sure that you get highly enabled to use this wonderful tool. Multiple assignments at each step will make you more confident about the concepts learned. Additionally, all the scripts walked through during lectures, and also the solution to the assignment are available in corresponding resources of the lectures.

In case of queries/issues, I would try to respond as early as possible.

Happy Learning!

Anuradha

Who this course is for:

Testers, developers who want to load test their application in quick & effective manner

Performance Testing Using Locust 1.0

What you'll learn

Explore related topics

Course content

Latest - Locust 1.0- Locust Development Environment5 lectures • 30min

Latest - Locust 1.0- Working with Basic Locust Script9 lectures • 39min

Latest - Locust 1.0- Working with Tasks6 lectures • 27min

Latest - Locust 1.0 - Working with HTTP Requests14 lectures • 1hr 34min

Load Testing Environment - Upgraded 1.012 lectures • 2hr 17min

Locust Web Monitor & Report Statistics5 lectures • 26min

Enhancing Locust Scripts4 lectures • 48min

Using Custom Clients -Testing systems other than HTTP4 lectures • 36min

Requirements

Description

Who this course is for: