Recently I was updating and fixing some existing unit tests after doing a (rather large) overhaul of code.The unit test previously needed to wait for an asynchronous callback to finish before continuing, something like this: Note the optional done parameter provided to beforeEach. This is a void function that signals Jasmine that the callback is … [Read more…]
In Jasmine, you can expect an object toBe another object. However, this will check to see if the two arrays point to the same reference object. In other words, it will check to see if the arrays point to the same memory address. Produces this not-very-helpful error message: Expected [ 42, ‘Forty-Two’ ] to be … [Read more…]
Recently I had a problem where in an Angular unit test where I had an object that was being initialized in ngOnInit from a service. As far as I could tell, everything should be working, but the test would fail because I was trying to set a property on the object before it had finished … [Read more…]
BlockingCollection is essentially a queue that provides a thread-safe way to consume items. You can put it into a loop and consume the items one at a time, throttling execution and potentially preventing your system from being overwhelmed. I use these all the time, but most recently I built it in to a metric collection … [Read more…]
Recently I was looking at a MongoDB service and wondered if doing ReplaceOne was really the right call. My document was pretty simple – some identifying information that doesn’t change, and an array containing informational state that grows (never updates) as my program runs. I set up the documents to update to the database every … [Read more…]
The C# Interactive window allows you to use a C# REPL that can be pretty useful for testing something out quickly. I’ve used it a bunch of times for formatting a DateTime to a string, because I can never quite remember which combination of characters results in what I want. In Visual Studio, you can … [Read more…]
There’s been more than a couple times where I’ve wanted to use the Parallel class to take a collection and rip through it with multiple threads, but I’ve struggled with how to log the progress (especially the count of objects processed) easily. Interlocked .NET actually provides the solution in a static class called Interlocked, located … [Read more…]
If you find yourself writing a lot of the same code (or copy/pasting it) for similar constructs, you should probably consider using generics. It allows you to write a base class full of functionality that is basically the same across all of different classes, but in a way that doesn’t tie you to a specific … [Read more…]
Sometimes my git branches end up looking something like this …and its really hard to tell what I’ve already done and merged and what is still in progress. (I masked the names of the branches because this is actually what my local git repo looks like for a client). I know I should probably just … [Read more…]
I find that writing unit tests in JavaScript kind of sucks, so this post will (hopefully) serve as a cheat sheet of all the stuff I keep looking up. As such, it will be updated as I learn new stuffs. How To: scope test run to specific tests Remember to set it back before you … [Read more…]