Criteria’s for Choosing The Right Open-Source Test Automation Tools

I presented last night at a local Boston meetup hosted by BlazeMeter a session together with my colleague Amir Rozenberg.

The subject was the shift from legacy to open-source frameworks, the motivations behind and also the challenges of adopting open-source without a clear strategy especially in the digital space that includes 3 layers:

  1. Open source connectivity to a Lab
  2. Open-source and its test coverage capabilities (e.g. Can open-source framework support system level, visual analysis, real environment settings and more)
  3. open-source reporting and analysis capabilities.

During the session, Amir also presented an open-source BDD/Cucumber based test framework called Quantum (http://projectquantom.io)

Full presentation slides can be found here:

Happy Reading

Eran & Amir

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Model-Based Testing and Test Impact Analysis

In my previous blogs and over the years, I already stated how complicated, demanding and challenging is the mobile space, therefore it seems obvious that there needs to be a structured method of building test automation and meeting test coverage goals for mobile apps.

While there are various tools and techniques, in this blog I would like to focus on a methodology that has been around for a while but was never adopted in a serious and scalable way by organizations due to the fact that it is extremely hard to accomplish, there are no sufficient tools out there that support it when it comes to non-proprietary open-source tools and more.

First things first, let’s define what is a Model-Based testing

Model-based testing (MBT) is an application for designing and optionally executing artifacts to perform software testing or system testing. Models can be used to represent the desired behavior of a System Under Test (SUT), or to represent testing strategies and a test environment.

mbt

Fig 1: MBT workflow example. Source: Wikipedia

In the context of mobile, if we think about an end-user workflow with an application it will usually start with a Login to the app, performing an action, going back, performing a secondary action and often even a 3rd action based on the previous output of the 2nd. Complex Ha

The importance of modeling a mobile application serves few business goals:

  1. App release velocity
  2. App testing coverage (use cases)
  3. App test automation coverage (%)
  4. Overall app quality
  5. Cross-team synchronization (Dev, Test, Business)

 

As already covered in an old blog  I wrote, mobile apps would behave differently, and support different functionality based on the platform they are running (E.g., not every iOS device support both Touch ID and/or 3D Touch gesture). Therefore, being able to not only model the app and generate the right test cases but also to match these tests across the different platforms can be a key to achieving many of the 1-5 goals above.

In the market, today there are various commercial tools that can assist in MBT like CA Agile Requirement Designer, Tricentis Tosca, and others.

Looking at an example provided by one of the commercial vendors in the market (Tricentis), it can show a common workflow around MBT. A team aims to test an application; therefore, they would scan it using the MBT tool to “learn” its use cases, capabilities, and other artifacts so they can stack these into a common repository that can serve the team to build test automation.

tosca

Fig 2: Tricentis Tosca MBTA tool

In Fig 2., Tricentis examines a web page to learn its entire options, objects, and other data related items. Once the app is scanned, it can be easily converted into a flow diagram that can serve as the basis for test automation scenarios.

With the above goals in mind, it is important to understand that having an MBT tool that serves the automation team is a good thing, but only if it increases the team efficiency, its release velocity, and the overall test automation coverage. If the output of such tool would be a long list of test cases that either does not cover the most important user flows, or it includes many duplicates than this wouldn’t serve the purpose of MBT but rather will delay existing processes, and add unnecessary work to teams that are already under pressure.

In addition to the above commercial tools, there is an older but free tool that allows Android MBT with robotium called MobiGuitar. This tool not just offers MBT capabilities but also code coverage driven by the generated test scripts.

A best practice in that regards would be to probably use an MBT tool that can generate all the application related artifacts that include the app object repository, the full set of use cases, and allow all of that to be exported to leading open-source test automation frameworks like Selenium, Appium, and others.

Mobile Specific MBT – Best Practices and Examples

Drilling down into a workflow that CA would recommend around MBT would look as follows – In reality, the below is easier said than done for a Mobile App compared to Web and Desktop:

  1. The business analysts will create the story using tools like CA Agile Requirement Designer or such (see below more examples)
  2. The story is then passed to an ALM tool (e.g.: CA Agile Central [formerly Rally], Jira, etc.) for project tracking
  3. Teams use the MBT tools to collaborate
    1. The automation engineer adds the automation code snippets to the nodes where needed or adds additional nodes for automation.
    2. The programmer updates the model for technical specs or more technical details.
    3. The Test Data engineer assigns test data to the model
  4. Changes to the story are synchronized with the ALM Tool
  5. Test cases are synchronized with the ALM Tool
  6. The programmer completes coding
  7. The code is promoted from Dev to QA
  8. Testing begins
    1. The tester uses the test cases with test data from MBT tools for manual test case execution
    2. The automation scripts with test data are executed for functional and regression testing

To learn more about efficient MBT solutions, practices please refer to these sources:

Selenium Is the New Testing Tool Standard

Seems like the debate in the world of test automation tools is over.

If few years back HP QTP/UFT (formerly WinRunner) was the standard and most commonly used tool for test automation in the QA space, those days are over.

The shift toward Agile, Devops and such trends together with the digital transformation which includes multi platform testing of Mobile, Web, IOT in a very short amount of times changed the tools landscape and the testing requirements.

See below a snapshot of the top required testing tools which show that the shift already started in 2011 where Selenium passed HP tools in the market adoption.

qtp vs selenium

Sourcehttp://www.seleniumguide.com/

The requirements today are that testing is done as early as possible in the project life cycle (SDLC) and to enforce this process, developers ought to play a significant role – Testing is now being developed and executed by all Agile team members including developers, testers, ops people and others.

In order for the shift and the adoption to grow the tools need to be tightly integrated into the developers environment (IDE’s) which in the digital space might be Eclipse, Android Studio, Visual Studio, Xcode or other cross platform IDE’s like PhoneGap or Titanium.

The additional aspect of test framework adoption such as Selenium and Appium lies in the Open-Source nature of these tools. The flexibility of such open source tools to get extended by developers according to their needs is a great deal compared to closed testing tools such as UFT which are disconnected from the IDE and development environments.

We shall continue to monitor the tools space and movement, but seems like the open source tools is becoming standard for Agile, DevOps practitioners which find these tools suitable for their shift left activities, keeping up with the market dynamics and competition, as well as great enablers for quality and velocity maintainability.

To get some heads up into what is the future of Selenium, and how are the efforts moving on toward making the web browsers drivers (Chrome, Firefox, IE etc.) standard and managed by the browser vendors, refer to this great session (courtesy of Applitools)

http://testautomation.applitools.com/post/120437769417/the-future-of-selenium-andreas-tolfsen-video