isKindOfClass: returns false negative in unit test bundle

Question

So I have an instance of MyViewController in the detail view of a UISplitViewController. I am running a unit test to see whether the detail view contains the correct type of

Answer 1

As mentioned in my question, I realised I was incorrectly including the app's source files in the test bundle's compile sources build phase. After removing the source files from this build phase I solved the linker error of the missing symbols by changing the Symbols Hidden by Default build setting to "No" for the Debug configuration

This solved the linker error and meant that I was no longer including duplicate source files

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Note: Also, be sure to set the "Host Target" for the test target in the Info tab of Xcode so it'll pull the compile sources from there