I recently was greeted with a ValueError when using evaluation parameters in Great Expectations. If you hit a similar error, read on. At the time of writing of this blog post, I was working on implementing data tests using Great Expectations. While trying out Evaluation Parameters in Expectations for the first time, I faced a cryptic ValueError message related to […]
ValueError in Evaluation Parameter of Great Expectations
Tracking table row count using Metric Store of Great Expectations
In this blog post, we will explore the metric store and evaluation parameters feature of Great Expectations. These help us track data about our data collection. I will help you write a test to keep track of table row count using Great Expectations. This post is fifth in our series to help testers implement useful tests with Great Expectations for […]
Outlier detection algorithms using Great Expectations
In this blog post, we will implement outlier detection algorithms using Great Expectations. There is a socio-technical context to this blog post. On the social side of things, I want to emphasize that Great Expectations can be used to provide business folks information in a timely manner. On the technical side, we will look at how to use Great Expectations […]
Testing Infrastructure as Code: A beginner’s guide
This post is for testers who wants to know about testing Infrastructure as Code. We are also aiming to help testers who are looking for a change to their testing domain. I worked as a functional tester for more than 18 years in various roles. For the past one and half years, I am a tester in a DevOps team. […]
Technical testing at Qxf2: Q1 of 2022
Qxf2 often brands our type of testing as technical testing. We do not care about “manual testing” or “automated testing”. We struggle to explain what that means to other folks who are stuck in the “manual vs automation” mindset. Technical testing is one of those terms that is easier to experience than to explain. Given how often we need to […]
Monitoring Uvicorn using Monit
In this blog post, I will share my take of solving a specific issue faced while setting up monitoring for a Uvicorn server using Monit. At Qxf2, we have a web application built with ReactJS, Neo4j and FastAPI, implemented for an internal use-case. It runs on an EC2 instance. The application, silently going down has been troublesome. Hence, we looked […]
Transitioning to testing loosely coupled microservices
Testing loosely coupled microservices, at least for me, has proven to be much more challenging than testing monoliths. I feel like a beginner again – especially when there are many teams and many independently deployable services. I often feel overwhelmed with how much there is to consider! In this post, I present a mental model that is helping me think […]
Host Great Expectations Test Results on Netlify
In this post, we will help you host your Great Expectations test results on Netlify, a web hosting platform. This post is third in our series to help testers implement useful tests with Great Expectations for data validation. Implementing tests and running them is job half done. As testers it is quite essential to make sure our test results reach […]
Run Great Expectations workflow using GitHub Actions
In this post, we will help you run one Great Expectations test as part of your CI/CD pipeline using GitHub Actions. This post is second in our series to help testers implement useful tests with Great Expectations for data validation. If your instinct says that adding a single test to a CI/CD pipeline should not be the next part, read […]
GitHub Actions to execute tests against localhost
Do you want to setup a GitHub Actions to execute some tests against localhost at CI stage for every branch? Background In this post, we will discuss how we at Qxf2 have setup a GitHub Actions to execute selenium tests against localhost at the CI stage for every branch and the errors that we faced while setting up and how […]