[swift-evolution] [Pitch] @testable private members

[Robert Widmann]

@testable is already a hack.  Why not just extend it to fileprivate members?

~Robert Widmann

> On Feb 18, 2017, at 1:14 PM, Matthew Johnson via swift-evolution <swift-evolution at swift.org> wrote:
> 
> When writing unit tests sometimes it is necessary to artificially elevate a member to `internal` in order to make it visible to unit tests where it could otherwise be `private` or `fileprivate`.  We could introduce an `@testable` attribute that could be applied anywhere an access modifier is used.  This attribute would elevate the access modifier to `internal` when the module is imported using the `@testable import MyModule` syntax in a test suite.
> 
> Is this something that others have interest in?  Is it something that might be considered for Swift 4 now that phase 2 has begun?
> 
> Matthew
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