December 2017
Beginner
372 pages
10h 32m
English
Content preview from TypeScript 2.x By Example
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Writing test cases for isolated component
The unique thing about components with respect to services and pipes is that the components interact with the user interface. Components have a template that can alter the state of the component and its properties, and in the similar fashion, components may alter the content of the user interface.
So, to test components, we can employ two different strategies:
- Test components in isolation, which means we test components in a similar fashion as the services and pipes. We do not consider the template part of the component and neither test those. This approach is useful if we just want to test the logic that resides in the component. But this way, we may not get the comprehensive test cases for our ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.