Add Fakes Assembly option missing

I'm trying to get the Microsoft Fakes up and running in a Unit test project that I've set up in my solution.

For some reason the Add Fakes Assembly option is missing which means I can't create mockups of assemblies. And since this is the only alternative to add the Microsoft.QualityTools.Testing.Fakes assembly I can't use the Shim functionality either.

I've recently installed Visual Studio 2012 Professional and installed update 3 and this is the first go in Visual Studio 2012. And I haven't changed any settings. Although I have installed ReSharper, could this be the culprit?

Both Visual Studio 2019 and 2017 only has this feature in the Enterprise edition (they both have 3 main editions: Community, Professional and Enterprise.)

If you'd only need the Stub functionality, then you could simply pick other mocking frameworks. You mention Shims, which is an advanced functionality. I have heard some mock frameworks which can be close to that advanced.

I've heard of Prig (https://marketplace.visualstudio.com/items?itemName=sug.Prig-OpenSourceAlternativetoMicrosoftFakes), but I haven't ever tried it.

The newest screenshot of the feature matrix's (https://visualstudio.microsoft.com/vs/compare/) related section: