Typhoon: how to inject class instead of instance

Question

I have a third-party library which is written in Swift. The library provides a class that has some class methods in it. Using Typhoon, I want to inject the class into one of my classes so that, under unit testing, I could inject a mock class that provides fake class methods. I'm new to Typhoon and I went though the documentation, but haven't figured out how to do it. Is this even doable with Typhoon?

Answer 1

Yes, in the User Guide the section on Injecting Configuration shows how to inject primitives, scalar values and so forth.

To inject a class:

[initializer injectParameterWith:[SomeClass class]];

This also applies to property injection and method injection.

To inject a selector:

[initializer injectParameterWith:NSValueFromPrimitive(@selector(selectorValue))];

Typhoon rules:

• References to other definitions are resolved to the built instance.
• Simple objects, primitives and scalar values are injected as-is (scalar values and primitives must be wrapped).
• Collections (NSArray, NSSet, etc) that contain references to other definitions have those references resolved to the built instance. Any other values pass through as is.

There is also Typhoon Config, which allows storing configuration, simple objects and so forth in an external plist, json or properties file.