// RUN: %target-run-simple-swift
// REQUIRES: executable_test

// REQUIRES: objc_interop

//
//  These tests should work *without* Foundation being present
//

// Unfortunately, StdlibUnittest brings in Foundation somehow, so we
// can't use it here.

// import StdlibUnittest

//===--- Verify that Foundation isn't loaded ------------------------------===//
struct No {}
struct Yes {}
func isRandomAccessCollection<T : Collection>(_: T) -> No {
  return No()
}
func isRandomAccessCollection<T : RandomAccessCollection>(_: T) -> Yes {
  return Yes()
}
let no = isRandomAccessCollection("".utf16)
let _: No = no

//===--- Tests ------------------------------------------------------------===//

import ObjectiveC

func expectIsHashable<T : Hashable>(_ value: inout T) {}
func expectIsCVarArg<T : CVarArg>(_ value: inout T) {}

var anNSObject = NSObject()
expectIsHashable(&anNSObject)
expectIsCVarArg(&anNSObject)