Playwright has a great trace viewer that allows us to see exactly what is happening in our tests. This is especially helpful when something goes wrong. Let’s take a look at how we activate tracing and access the information it collects. Activate tracing We need a bit of code that runs before and after …
While preparing the code samples to record videos of my test runs, I run into a severe problem: Selenium Grid cannot do what I need it to do – at least not with the approach I had so far. Let’s regroup and switch the way we create the Selenium Grid. This post is part of …
Test recording has a bad reputation: The generated code is brittle, ugly and contains so many details that developers do not bother to understand it – instead, they start over from scratch. Microsoft did its part in creating that bad reputation. But Microsoft learned its lessons and did a big step forward with Codegen, the …
After we got Playwright up and running in the last post, we can now take a closer look on how we can automate a web browser with Playwright. Navigate to the web page Before we can start looking for elements, we need to open the web page we are interested in. We can call …
Sometimes it would be great to have a web browser in a specific version. Installing that on your machine may not be possible, but that is exactly the problem we can use dev containers for. Let’s look how Selenium and Docker can help us to get more flexibility (and additional features). This post is part …
Selenium is great to automate repetitive task in a web browser. We can take that concept one step further and use it to create end-to-end tests for web applications. Today we look at an approach to keep the initialisation code for Selenium in one place and use it in as many tests as we need. …
Playwright is a reliable end-to-end testing framework for web applications. It is open-source and available for C#, Java, JavaScript, and Python. While it is similar to Selenium and Cypress, Playwright has its own twist on testing and offers a nice set of tools to make writing tests less tedious. Since Microsoft is putting a lot …
In NUnit we can use the category attribute to classify tests. This allows us to mark long running tests and then tell our test runner to run them on demand but not with the regular test run. All we need to do is to add a category to a single test (or a class):
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[Test] [Category("Long")] public void VeryLongTest() { /* ... */ } |
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In a .Net Full Framework application we could use the property SpecifiedPickupDirectory in our mailSettings and the emails got stored to disk instead of sending them to the recipient. That allowed us to check them manually or in our test code. For .Net 5 you should no longer use System.Net.Mail.SmtpClient and instead use MailKit. However, …
If you persist a DateTime property to SQL Server you lose a tiny bit of precision. For most use cases this will go unnoticed. However, if you try to compare two objects as part of an integration test, your test will fail. Let us look how we can work around the different timer precisions between …