[ASTPrinter] Test case for moduleinterface with member typealiases

Author: rintaro

test/ModuleInterface/member-typealias.swift

@@ -0,0 +1,21 @@
+// RUN: %target-swift-frontend -typecheck -emit-module-interface-path - %s -enable-library-evolution -module-name MyModule | %FileCheck %s --check-prefix CHECK
+
+public struct MyStruct<T> {
+// CHECK-LABEL: public struct MyStruct<T> {
+  public typealias AliasT = T
+  public typealias AliasInt = Int
+
+  public func foo(x: AliasInt) -> AliasT { fatalError() }
+// CHECK:  public func foo(x: MyModule.MyStruct<T>.AliasInt) -> MyModule.MyStruct<T>.AliasT
+}
+
+public class MyBase<U> {
+  public typealias AliasU = U 
+  public typealias AliasInt = Int
+}
+
+public class MyDerived<X>: MyBase<X> {
+// CHECK-LABEL: public class MyDerived<X> : MyModule.MyBase<X> {
+  public func bar(x: AliasU) -> AliasInt { fatalError() }
+// CHECK:  public func bar(x: MyModule.MyDerived<X>.AliasU) -> MyModule.MyDerived<X>.AliasInt
+}