Of plugins and decorators - trivago's e2e test framework in the spotlight

location_city Online schedule Jul 29th 12:00 - 12:45 PM IST place Zoom people 87 Interested

Most often, test frameworks are developed from scratch and gradually extended with the required functionality. This approach is perfectly normal, but carries the risk of creeping technical debt as well as poor maintainability, transparency and extensibility. These risks can be minimized by using clean software architecture.

In this talk, I will present two key parts of our internal Selenium-based end-to-end testing framework, which has been successfully used to test multiple web projects using desktop and mobile browsers during the past five years:

  1. the plugin infrastructure using Java's Service Provider Interface
  2. the custom WebElement decorator that enables more resilient Selenium WebElements

I will explain the rationale for using these architectural tools and how these approaches mean that we can still evolve this framework quickly and easily to meet new needs.


Outline/Structure of the Talk

  • Why we decided to create a new test framework in the first place 2 minutes
  • A high level overview of our framework and the used technologies 5 minutes
  • Page objects, page components and their challenges 3 minutes
  • How we introduced a custom WebElement by using Selenium's FieldDecorator 15 minutes
  • The problem of separating core and context-specific functionalities (e.g. making the framework compatible with external browser clouds) 3 minutes
  • How we use Java's service provider interface approach to create a plugin interface to cleanly separate concerns 15 minutes
  • Summary 2 minutes

Learning Outcome

  • Learn how we solved common test framework problems by using core Java and Selenium capabilities
  • See how research and deep-diving into tech internals can be very beneficial
  • Get ideas on how to make your framework more generic and maintainable

Target Audience

SDETs, automation engineers, developers

Prerequisites for Attendees

It would be helpful to have some Java and Selenium knowledge to follow the more technical parts.



schedule Submitted 1 year ago

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  • Puja Chiman Jagani

    Puja Chiman Jagani - Selenium has a new trick up its sleeve to track failures

    Puja Chiman Jagani
    Puja Chiman Jagani
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    schedule 1 year ago
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    Selenium 4 introduced a fully distributed Grid with multiple components that communicate over the network. Troubleshooting and diagnosing problems in this setup is a challenge. To tackle this, Selenium integrated OpenTelemetry’s tracing and event logs.  This feature is now available out of the box by default when using Selenium.
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    1. What is observability?

    2. Need for observability

    3. Understanding the three pillars of observability: Metrics, Logging, and Tracing

    4. Generating telemetry data alone does not suffice. It is a process from design to deployment. 

    5. Full-stack tracing in Selenium (Grid and Java client library)

    6. Explain how we, at BrowserStack, are benefiting and exposing this information to our users.

  • Samiran Saha

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    2. Why is mobile web testing important for businesses

    3. Real-world mobile web testing customer use cases across Finance, Banking and E-commerce

    4. Mimics for a real device : A risky business

    5. Achieving versatility in meeting the dynamic infrastructure needs

  • Andrei Solntsev
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    Software developer
    schedule 11 months ago
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    45 Mins

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    Consider a case where an online retail application has launched its big sale days with exceptionally great deals, triggering the enthusiasm of millions of users to access the application at the same time. The moment the big sale started, the website received a peak load from its users. Unable to withstand the load, the application was inaccessible until a suitable fix was done by the engineering team. Would this make the customers happy with online shopping experience? How many people would stay in the application until it’s up again? Would they shop in the application if this repeats?  If CFRs had been tested effectively with proper focus, we could avoid facing this situation of losing hundreds of customers.

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    20 Mins
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    1. Are we presenting the same Experience as a real physical device held in their hands to grid users?

    2. Testing Integrations with different components

    3. Implement Automation for complex scenarios like users actions(scroll, click etc) with stability, fast pace, and less maintenance.

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    • How we simulate user actions in real devices using selenium?

    • How to leverage available frameworks based on your usage

    • Impact of automation on productivity and quality

  • 20 Mins

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    20 Mins

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    ● Brittle
    ● Take an age to run (Who has a test suite that takes a day to run?)
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  • Bharath Raja

    Bharath Raja - UI Developers' guide to support testing

    Bharath Raja
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    schedule 1 year ago
    Sold Out!
    45 Mins

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  • Shubham Yadav

    Shubham Yadav - Why and how we moved our test automation to Nightwatch - a case study

    Shubham Yadav
    Shubham Yadav
    Senior SDET
    schedule 1 year ago
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    20 Mins

    With the increasing frequency of releases and an ever-increasing number of automation scenarios, our existing framework wasn't helping the case. We saw an increase in our time and efforts with little to no improvement in results. 

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    3. Learnings and Outcome from migration

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