November 2018
Intermediate to advanced
346 pages
8h 12m
English
Content preview from Hands-On Dependency Injection in Go
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Summary
In this chapter, we have examined DI with method injection, perhaps the most ubiquitous of all forms of DI.
When it comes to extracting dependencies from existing code, for the purposes of testing, it might be the method that first comes to mind. Please be careful with this, we do not want to introduce test-induced damage.
Adding parameters to an exported API function for the sole purpose of testing undoubtedly damages UX code. Thankfully, there are some tricks available to us to avoid damaging our API. We can define member functions that only exist in test code. We can also use Just-In-Time (JIT) dependency injection, which we will examine in Chapter 9, Just-in-Time Dependency Injection.
In this chapter, we have looked at the fantastic ...
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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.