Recently I had created a couple of components to make filtering and sorting a list of objects easier. Essentially I wanted a table where the headers are clickable for sorting and also have a textbox below them for filtering. Now, this isn’t super great, because I’m downloading all of the data to the client side … [Read more…]
Recently I wanted to have a ng-pagination control as well as a few “results per page” links to change the number of items displayed in a given page. However, ngb-pagination is always displayed as a block, so you have to fiddle around with it to get it to work. First I tried to just put … [Read more…]
Recently, I was writing some unit tests for Angular. It was a pretty basic test, just checking to see if a method on an injected provider was called when a method in my component executed… but suddenly everything blew up with this weird error: TypeError: Cannot read property ‘ngInjectableDef’ of undefined Googling around didn’t really … [Read more…]
Recently I had an Angular component that needed to be manually sized based on the window’s size. Admittedly, this is pretty annoying, but the user experience was so much better than anything I could come up with using straight CSS. It worked fine to get the dimensions of the window and calculate the width and … [Read more…]
Sometimes when you’re writing Javascript unit tests you have to give Javascript a chance to catch up before checking your assertions. Javascript uses a single event loop, so it isn’t multi-threaded in the same way as other languages. You can still get a “multi-threaded feel” by using callbacks (promises, observables, etc), but at the end … [Read more…]
Recently I wrote some code that contained a setTimeout. The reason was so that the UI could catch up before the function actually fired – something that I’ve found the need to do with javascript from time to time. So, when it comes to testing the code… my test just skipped along until it literally … [Read more…]
There’s some debate as to whether or not you should test private members in a class. Generally, I fall in to the “if it makes sense to test it, test it” camp. If there’s a private method that is only accessible by a hard-to-mock series of callbacks or events, I would much rather write a … [Read more…]
Recently I’ve been working on adding SignalR to a web application, and that means broadcasting records to clients after they’ve been updated. I could make different methods for each update type and react accordingly, but I’m pretty lazy so I decided to just make one “update” method that receives the entire record (and replaces it … [Read more…]
Recently I was trying to write a unit test testing to see if one object was equal to another. The objects themselves were simple, just a collection of built-in types, so it should be easy to test. .Equals However, since I didn’t implement .Equals, C# doesn’t natively know how to check if the objects are … [Read more…]
In a previous post I talked about testing Observables in your Angular code. This is pretty common, because HttpClient sends back an Observable<T> – so if you want to spyOn that function, you’ll need to figure out how to return an Observable. I’ve been bouncing around a couple of projects/repos recently, and it turns out … [Read more…]