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Jonathan George - Software Engineer III

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Meet Jonathan

Jon is an experienced project lead and architect who has spent nearly 20 years delivering industry-leading solutions for clients across multiple industries including oil and gas, retail, financial services and healthcare. At endjin, he helps clients take advantage of the huge opportunities presented by cloud technologies to better understand and grow their businesses.

Using complex objects in BDD Scenarios with SpecFlow

Using complex objects in BDD Scenarios with SpecFlow

Jonathan George

During our projects at endjin, we often find ourselves evangelising Behaviour Driven Development, and specifically SpecFlow. In this post we look at a technique for defining complex test data objects in your Gherkin feature files, which we've also made available via the endjin-sponsored Corvus.NET project.
Integration Testing Azure Functions with SpecFlow and C#, Part 5 - Using Corvus.SpecFlow.Extensions in a build pipeline

Integration Testing Azure Functions with SpecFlow and C#, Part 5 - Using Corvus.SpecFlow.Extensions in a build pipeline

Jonathan George

If you use Azure Functions on a regular basis, you'll likely have grappled with the challenge of testing them. Even now, several years after their introduction, the testing story for Functions is not hugely well defined. In the final post in this series, we show how to ensure specs written using Corvus.SpecFlow.Extensions can run as part of your build pipeline.
Integration Testing Azure Functions with SpecFlow and C#, Part 4 - Controlling your functions with additional configuration

Integration Testing Azure Functions with SpecFlow and C#, Part 4 - Controlling your functions with additional configuration

Jonathan George

If you use Azure Functions on a regular basis, you'll likely have grappled with the challenge of testing them. Even now, several years after their introduction, the testing story for Functions is not hugely well defined. In the fourth of this series of posts, we look at how configuration can be supplied from your tests to the functions apps being tested.
Integration Testing Azure Functions with SpecFlow and C#, Part 3 - Using hooks to start Functions

Integration Testing Azure Functions with SpecFlow and C#, Part 3 - Using hooks to start Functions

Jonathan George

If you use Azure Functions on a regular basis, you'll likely have grappled with the challenge of testing them. Even now, several years after their introduction, the testing story for Functions is not hugely well defined. In the third of a series of posts, we look at using classes in the Corvus.SpecFlow.Extensions library to run functions apps via scenario and feature hooks.
Integration Testing Azure Functions with SpecFlow and C#, Part 2 - Using step bindings to start Functions

Integration Testing Azure Functions with SpecFlow and C#, Part 2 - Using step bindings to start Functions

Jonathan George

If you use Azure Functions on a regular basis, you'll likely have grappled with the challenge of testing them. Even now, several years after their introduction, the testing story for Functions is not hugely well defined. In the second of a series of posts, we look at using step bindings provided by the Corvus.SpecFlow.Extensions library to run functions apps as part of your SpecFlow scenarios.
Integration Testing Azure Functions with SpecFlow and C#, Part 1 - Introduction

Integration Testing Azure Functions with SpecFlow and C#, Part 1 - Introduction

Jonathan George

If you use Azure Functions on a regular basis, you'll likely have grappled with the challenge of testing them. Even now, several years after their introduction, the testing story for Functions is not hugely well defined. In the first of a series of posts, we look at some different approaches to testing your functions apps, and introduce the Corvus.SpecFlow.Extensions library.
C# developers! Your scoped components are more dangerous than you think.

C# developers! Your scoped components are more dangerous than you think.

Jonathan George

There are hidden pitfalls with dependency injection, particularly when managing the lifetime of scoped components. What is safe? And are there other approaches we can take to managing scoped object lifetimes?
Exposing legacy batch processing code online using Azure Durable Functions, API Management and Kubernetes

Exposing legacy batch processing code online using Azure Durable Functions, API Management and Kubernetes

Jonathan George

In this post we show how a combination of Kubernetes, Azure Durable Functions and Azure API Management can be used to make legacy batch processing code available as a RESTful API. This is a great example of how serverless technologies can be used to expose legacy software to the public internet in a controlled way, allowing you to reap some of the benefits of a cloud first approach without fully rewriting and migrating existing software.
NDC London Day 3 Retrospective - from personal projects to developer comedy

NDC London Day 3 Retrospective - from personal projects to developer comedy

Jonathan George

Along with several of my endjin colleagues, I attended NDC London in January this year - here's a run through of the sessions I attended on Day 3 and my thoughts. This final day was a mixed bag, taking in talks on drumming and AKKA.net, as well as something a bit more close to home - a session from endjin's own Jess Panni and Carmel Eve on our recent project for OceanMind.
NDC London Day 2 Retrospective - Full Stack, from SPAs to high performance .NET Core via Websockets

NDC London Day 2 Retrospective - Full Stack, from SPAs to high performance .NET Core via Websockets

Jonathan George

Along with several of my endjin colleagues, I attended NDC London in January this year - here's a run through of the sessions I attended on Day 2 and my thoughts. This day was UI heavy, with sessions on Vuejs and UI testing, but I also learned more about GraphQL and writing high performance C# code.
NDC London Day 1 Retrospective - dangerous AI, microservices, diagnostics and Blazor

NDC London Day 1 Retrospective - dangerous AI, microservices, diagnostics and Blazor

Jonathan George

A retrospective of my first day at NDC London 2020, taking in sessions on AI and Machine Learning, Capability Mapping, Micro Frontends, Diagnostics and Blazor.
Running Azure functions in Docker on a Raspberry Pi 4

Running Azure functions in Docker on a Raspberry Pi 4

Jonathan George

For one of my first experiments with the Raspberry Pi 4, I decided to get an Azure Function running in a Docker container. This post gives a step-by-step guide on how to do it, as well as providing code you can use a starting point for your own experiments.
Donut chart corkscrew entry animation with d3.js

Donut chart corkscrew entry animation with d3.js

Jonathan George

In this post we show a smooth entry animation for D3.js donut (or pie) charts, using a combination of a sweep and a zoom to give a corkscrew-like effect.
Becoming an endjineer – week 1

Becoming an endjineer – week 1

Jonathan George