Category: Programming

.NET, C#, CSharp, Mobile, Programming, Xamarin

.NET MAUI – Xamarin.Forms successor

Today Microsoft announced .NET MAUI – a successor of Xamarin.Forms. Besides well known MVVM, .NET MAUI will use MVU (Model-Vue-Update) pattern. At first glance, the code will be much more readable (shorter) and closer to functional programming. Next milestone is single project for all types platforms. Right now, you need to have separate for iOS, …

DevOps, Programming, Quality, security, Software engineering

Few basic things to plan in your IT project

I just completed reading 2 great books: The DevOps Handbook: How to create world-class agility, reliability, & security in technology organizations and The Phoenix Project: A Novel about IT, DevOps, and Helping Your Business Win. These awsome books caused that I started thinking about my past projects in terms of what we did wrong and …

.NET, .NET Core, BDD, C#, CSharp, Library, Programming, Quality, Tests, Unit tests

SpecFlow – BDD in C# – induction

BDD – this acronym stand for Behavior Driven Development. This methology has been built using concepts of TDD (Test Driven Development) and DDD (Domain Driven Design). This type of tests is often done as integration tests (UI tests or API). One of the most popular libraries is SpecFlow. I was using this solution for Xamarin, …

.NET, .NET Core, C#, CSharp, Library, Programming, security

Security Code Scan – open source vulnerability patterns detector

Security Code Scan is open source (LGPL v3.0) vulnerability patterns detector for C# (including .NET Core) and VB.NET. It has two installation modes: either as VS extension or as nuget package (SecurityCodeScan). Instead of writing about types of attacks which it can detect – let’s demo it. As a test application, I created API application …

Programming, Software engineering

12 factor app

12 factor app is a set of principle used to build an app to make it as independent from hosting provider as possible with keeping software development best practices. It was created by Heroku engineers who worked on the platform and later supported thousands of customers projects on Heroku. Main appliance was SaaS however most …

Programming, SQL

SQL Server 2019 – very short intro

Today Microsoft presented SQL Server 2019 in general availability. Did you expect a lot of new features? I did not but it looks like Microsoft made a nice surprise. Most important features: Support for big data using SQL Server, Spark and HDFS Support for AI (including Python) Data virtualization – allows to use SQL Server …

.NET, C#, CSharp, Library, Programming, Tests, Unit tests

Fluent Assertions in unit tests

As a continouation of the article about unit test frameworks I would like to introduce Fluent Assertions. This framework simplifies testing by BDD style syntax. Let’s start from basic assertion. As you noticed, first is going the result, then the keyword (or rather extension method) Should() and at the end the condition (so in case …

.NET, C#, CSharp, Library, Programming

.NET unit test frameworks comparison

In .NET we have 3 dominant unit test frameworks: MS Test (v2) NUnit (3.x) xUnit (2.x) First one comes with Visual Studio, two other requires additional components installation. Initialize First difference we will find in initialization approach. In MS Test there several initialization available (by attributes): AssemblyInitialize, ClassInitialize and TestInitialize. The disadvantage is that initialization …

.NET, .NET Core, ASP.NET, C#, CSharp, Programming

Install .NET Core on Debian Linux

Microsoft prepared quite good instruction how to install dotnet runtime on Linux. I’ve been interested in Debian distro. So I went pretty smooth through the first part of the manual (system setup). However installing dotnet I had constinously an error that package cannot be found. First comment: the package name has been changed and it …

.NET, ASP.NET, AWS, C#, CSharp, Programming, REST, WebAPI

AWS Cognito – Identity Pool usage in .NET Core

Some time ago I had to implement authorization and authentication for REST (.NET Core 2.1, the latest stable nuget package version is 2.1.3) web service using JWT tokens (bearer) using AWS Cognito Identity Pools. It was pretty hard to find the updated tutorials or materials (even on AWS most of the data is about old …