[ModuleInterface] Test that we accept all access-level modifiers in swiftinterfaces

Author: xymus

test/Sema/access-level-import-flag-check.swift

@@ -2,11 +2,16 @@
 // RUN: split-file %s %t
 
 /// Build the libraries.
-// RUN: %target-swift-frontend -emit-module %t/PublicLib.swift -o %t
-// RUN: %target-swift-frontend -emit-module %t/PackageLib.swift -o %t
-// RUN: %target-swift-frontend -emit-module %t/InternalLib.swift -o %t
-// RUN: %target-swift-frontend -emit-module %t/FileprivateLib.swift -o %t
-// RUN: %target-swift-frontend -emit-module %t/PrivateLib.swift -o %t
+// RUN: %target-swift-frontend -emit-module %t/PublicLib.swift -o %t \
+// RUN:   -enable-library-evolution
+// RUN: %target-swift-frontend -emit-module %t/PackageLib.swift -o %t \
+// RUN:   -enable-library-evolution
+// RUN: %target-swift-frontend -emit-module %t/InternalLib.swift -o %t \
+// RUN:   -enable-library-evolution
+// RUN: %target-swift-frontend -emit-module %t/FileprivateLib.swift -o %t \
+// RUN:   -enable-library-evolution
+// RUN: %target-swift-frontend -emit-module %t/PrivateLib.swift -o %t \
+// RUN:   -enable-library-evolution
 
 /// Check flag requirement, without and with the flag.
 // RUN: %target-swift-frontend -typecheck %t/ClientWithoutTheFlag.swift -I %t -verify \
@@ -17,7 +22,7 @@
 // REQUIRES: asserts
 
 /// swiftinterfaces don't need the flag.
-// RUN: %target-swift-typecheck-module-from-interface(%t/Client.swiftinterface)
+// RUN: %target-swift-typecheck-module-from-interface(%t/Client.swiftinterface) -I %t
 
 //--- PublicLib.swift
 //--- PackageLib.swift
@@ -34,5 +39,9 @@ private import PrivateLib // expected-error@:1 {{Access level on imports require
 
 //--- Client.swiftinterface
 // swift-interface-format-version: 1.0
-// swift-module-flags: -enable-library-evolution
-public import Swift
+// swift-module-flags: -enable-library-evolution -package-name MyPackage
+public import PublicLib
+package import PackageLib
+internal import InternalLib
+fileprivate import FileprivateLib
+private import PrivateLib