RxJS Testing — Write Unit Tests for Observables | by Denis Loh | Jun, 2022

Advance your unit testing skills by writing tests with the RxJS testing features. Photo by Davyn Ben on Unsplash RxJS is a very powerful and a cool set of tools to create reactive apps. When developing angular applications you will be very likely faced with RxJS, so I assume, you are familiar with how to … Read more

smartcontracts – Ethereum events not tracked by The Graph node via Truffle tests on Ganache (Ethereum + Ganache + The Graph + Truffle)

So basically, I am trying to develop locally on Ganache, Truffle, The Graph node combo and somehow, I am not getting it right and I’ve lost too much time on in so I would like to share how I go about it and maybe somone can point out where I make the mistake. I am … Read more

asp.net – C# Can’t Access An In Memory Database Created for Integration Tests

I have a C# MVC app for which I’m writing integration tests. I’ve been following https://docs.microsoft.com/en-us/aspnet/core/test/integration-tests?view=aspnetcore-6.0 and I created a CustomWebApplicationFactory like this in the following file: CustomWebApplicationFactory.cs using System; using System.Linq; using Microsoft.AspNetCore.Hosting; using Microsoft.AspNetCore.Mvc.Testing; using Microsoft.EntityFrameworkCore; using Microsoft.Extensions.DependencyInjection; using Microsoft.Extensions.Logging; using amaranth.Data; namespace amaranth.Tests { #region snippet1 public class CustomWebApplicationFactory<TStartup> : WebApplicationFactory<TStartup> where … Read more

Let’s Smell Some Tests #3 — Testing Randomness in Java | by Krystian Szpiczakowski | May, 2022

Why you should avoid testing non-deterministic behavior Photo by Lucas George Wendt on Unsplash Hello, and welcome to the fourth article of the “Let’s Smell Some Tests” series. In the previous episode¹, we were looking at tests that exercised internal behavior, and we pointed out the drawbacks of this approach. Today, we’re going to analyze … Read more

statistics – Function to Conduct a Kruskal Wallis Tests for Multiple Comparison of Variables using R

Issue: I have a dataset that doesn’t meet the assumptions to conduct an ANOVA, so I need to conduct a non-parametric alternative such as the Kruskal Wallis test. Overall, I have seven parameters and I want to conduct multiple pairwise comparisons between them. I have found a function to conduct this type of analysis but … Read more

Don’t verify the internal behavior in tests

Why your tests should verify only the observable behavior, not the implementation details Photo by Michiel Leunens on Unsplash Hello and welcome to the new episode of the”Let’s smell some tests” series. In this article, we’re going to consider what exactly our tests are (not) supposed to verify to keep them free of false alarms, … Read more

The Observant Developer — Part 1. Like tests, observability tools provide… | by Roni Dover | May, 2022

Like tests, observability tools provide a way for developers to validate code assumptions, without the added cement. Image by author This is the first in a three-part series that will review some of the observability technologies available to developers today and what specific insights they can provide. Observability? Isn’t that a DevOps thing? Historically, observability … Read more

java – Have updated spring to 2.5.12, however my project isn’t running and says no junit 5 tests found, below is output

here is my pom file, I upgrade from 2.3.4 to 2.5.12 for springboot version I also updated my spring-cloud version from Hoxton.SR3 to 2020.0.5 and added in 1.1.2.RELEASE under the “spring-cloud- starter-kubernetes-config” artifactID. <?xml version=”1.0″ encoding=”UTF-8″?> <project xmlns=”http://maven.apache.org/POM/4.0.0″ xmlns:xsi=”http://www.w3.org/2001/XMLSchema-instance” xsi:schemaLocation=”http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd”> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.5.12</version> <relativePath/> <!– lookup parent from repository –> </parent> <groupId>com.sams.pricing</groupId> … Read more