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Update README stub instructions. #579

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MatyasKriz merged 1 commit into from
Oct 11, 2025
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Update README stub instructions. #579

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2 changes: 1 addition & 1 deletion README.md
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Expand Up @@ -400,7 +400,7 @@ Stubs are used for suppressing real code. Stubs are different from Mocks in that
let stub = GreeterStub()
```

When a method is called or a property accessed/set on a stub, nothing happens. If a value is to be returned from a method or a property, `DefaultValueRegistry` provides a default value. Stubs can be used to set implicit (no) behavior to mocks without the need to use `thenDoNothing()` like this: `MockGreeter().spy(on: GreeterStub())`.
When a method is called or a property accessed/set on a stub, nothing happens. If a value is to be returned from a method or a property, `DefaultValueRegistry` provides a default value. Stubs can be used to set implicit (no) behavior to mocks without the need to use `thenDoNothing()` like this: `MockGreeter().withEnabledDefaultImplementation(GreeterStub())`.

##### DefaultValueRegistry
`DefaultValueRegistry` is used by Stubs to get default values for return types. It knows only default Swift types, sets, arrays, dictionaries, optionals, and tuples (up to 6 values). Tuples for more values can be added through extensions. Custom types must be registered before use with `DefaultValueRegistry.register<T>(value: T, forType: T.Type)`. Furthermore, default values set by Cuckoo can also be overridden by this method. Sets, arrays, etc. do not have to be registered if their generic type is already registered.
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