Tests: Add package access level test cases to MemberImportVisibility tests.

Author: tshortli

test/NameLookup/Inputs/MemberImportVisibility/members_B.swift

@@ -3,12 +3,15 @@ import members_A
 
 extension X {
   public func XinB() { }
+  package func XinB_package() { }
 
   public var propXinB: Bool { return true }
+  package var propXinB_package: Bool { return true }
 
   public static func >>>(a: Self, b: Self) -> Self { b }
 
   public struct NestedInB {}
+  package struct NestedInB_package {}
 }
 
 extension Y {
@@ -20,3 +23,7 @@ extension Y {
 public enum EnumInB {
   case caseInB
 }
+
+package enum EnumInB_package {
+  case caseInB
+}

test/NameLookup/members_transitive.swift

@@ -1,10 +1,10 @@
 // RUN: %empty-directory(%t)
 // RUN: %target-swift-frontend -emit-module -o %t %S/Inputs/MemberImportVisibility/members_A.swift
-// RUN: %target-swift-frontend -emit-module -I %t -o %t %S/Inputs/MemberImportVisibility/members_B.swift
+// RUN: %target-swift-frontend -emit-module -I %t -o %t -package-name TestPackage %S/Inputs/MemberImportVisibility/members_B.swift
 // RUN: %target-swift-frontend -emit-module -I %t -o %t %S/Inputs/MemberImportVisibility/members_C.swift
-// RUN: %target-swift-frontend -typecheck %s -I %t -verify -swift-version 5
-// RUN: %target-swift-frontend -typecheck %s -I %t -verify -swift-version 6
-// RUN: %target-swift-frontend -typecheck %s -I %t -verify -swift-version 5 -enable-experimental-feature MemberImportVisibility -verify-additional-prefix member-visibility-
+// RUN: %target-swift-frontend -typecheck %s -I %t -verify -swift-version 5 -package-name TestPackage
+// RUN: %target-swift-frontend -typecheck %s -I %t -verify -swift-version 6 -package-name TestPackage
+// RUN: %target-swift-frontend -typecheck %s -I %t -verify -swift-version 5 -package-name TestPackage -enable-experimental-feature MemberImportVisibility -verify-additional-prefix member-visibility-
 
 import members_C
 // expected-member-visibility-note 6{{add import of module 'members_B'}}{{1-1=import members_B\n}}
@@ -15,6 +15,7 @@ func testExtensionMembers(x: X, y: Y<Z>) {
   y.YinA()
 
   x.XinB() // expected-member-visibility-error{{instance method 'XinB()' is not available due to missing import of defining module 'members_B'}}
+  x.XinB_package() // expected-member-visibility-error{{'XinB_package' is inaccessible due to 'package' protection level}}
   y.YinB() // expected-member-visibility-error{{instance method 'YinB()' is not available due to missing import of defining module 'members_B'}}
 
   x.XinC()
@@ -33,31 +34,36 @@ func testOperatorMembers(x: X, y: Y<Z>) {
 }
 
 extension X {
-  var testProperties: (Bool, Bool, Bool) {
+  var testProperties: (Bool, Bool, Bool, Bool) {
     return (
       propXinA,
       propXinB, // expected-member-visibility-error{{property 'propXinB' is not available due to missing import of defining module 'members_B'}}
+      propXinB_package, // expected-member-visibility-error{{'propXinB_package' is inaccessible due to 'package' protection level}}
       propXinC
     )
   }
 
   func testNestedTypes() {
     _ = NestedInA.self
     _ = NestedInB.self // expected-member-visibility-error{{struct 'NestedInB' is not available due to missing import of defining module 'members_B'}}
+    _ = NestedInB_package.self // expected-member-visibility-error{{'NestedInB_package' is inaccessible due to 'package' protection level}}
     _ = NestedInC.self
   }
 
   var nestedInA: NestedInA { fatalError() }
   var nestedInB: NestedInB { fatalError() } // expected-member-visibility-error{{struct 'NestedInB' is not available due to missing import of defining module 'members_B'}}
+  var nestedInB_package: NestedInB_package { fatalError() } // expected-member-visibility-error{{'NestedInB_package' is inaccessible due to 'package' protection level}}
   var nestedInC: NestedInC { fatalError() }
 }
 
 extension X.NestedInA {}
 extension X.NestedInB {} // expected-member-visibility-error{{struct 'NestedInB' is not available due to missing import of defining module 'members_B'}}
+extension X.NestedInB_package {} // expected-member-visibility-error{{'NestedInB_package' is inaccessible due to 'package' protection level}}
 extension X.NestedInC {}
 
 func testTopLevelTypes() {
   _ = EnumInA.self
   _ = EnumInB.self // expected-error{{cannot find 'EnumInB' in scope}}
+  _ = EnumInB_package.self // expected-error{{cannot find 'EnumInB_package' in scope}}
   _ = EnumInC.self
 }

test/NameLookup/members_transitive_multifile.swift

@@ -1,7 +1,7 @@
 // RUN: %empty-directory(%t)
 // RUN: split-file %s %t
 // RUN: %target-swift-frontend -emit-module -o %t %S/Inputs/MemberImportVisibility/members_A.swift
-// RUN: %target-swift-frontend -emit-module -I %t -o %t %S/Inputs/MemberImportVisibility/members_B.swift
+// RUN: %target-swift-frontend -emit-module -I %t -o %t -package-name TestPackage %S/Inputs/MemberImportVisibility/members_B.swift
 // RUN: %target-swift-frontend -emit-module -I %t -o %t %S/Inputs/MemberImportVisibility/members_C.swift
 // RUN: %target-swift-frontend -typecheck -primary-file %t/main.swift %t/A.swift %t/B.swift %t/C.swift -I %t -verify -swift-version 5
 // RUN: %target-swift-frontend -typecheck -primary-file %t/main.swift %t/A.swift %t/B.swift %t/C.swift -I %t -verify -swift-version 6