Tests: Upstream default-prebuilt-module-location-maccatalyst.swift.

Author: tshortli

test/ModuleInterface/default-prebuilt-module-location-maccatalyst.swift

@@ -0,0 +1,29 @@
+// Like default-prebuilt-module-location.swift, but for macCatalyst specifically.
+
+// REQUIRES: OS=macosx
+
+// 1. Create folders for a) our Swift module, b) the module cache, and c) a
+//    fake resource dir with a default prebuilt module cache inside.
+// RUN: %empty-directory(%t/PrebuiltModule.swiftmodule)
+// RUN: %empty-directory(%t/ModuleCache)
+// RUN: %empty-directory(%t/ResourceDir/macosx/prebuilt-modules/PrebuiltModule.swiftmodule)
+
+// 2. Define some public API
+// RUN: echo 'public struct InPrebuiltModule {}' > %t/PrebuiltModule.swift
+
+// 3. Compile this into a module and put it into the default prebuilt cache
+//    location relative to the fake resource dir. Also drop an interface into
+//    the build dir.
+// RUN: %target-swift-frontend -target %target-cpu-apple-ios13.1-macabi -emit-module %t/PrebuiltModule.swift -o %t/ResourceDir/macosx/prebuilt-modules/PrebuiltModule.swiftmodule/%target-cpu.swiftmodule -module-name PrebuiltModule -parse-stdlib -emit-module-interface-path %t/PrebuiltModule.swiftmodule/%target-cpu.swiftinterface
+
+// 4. Import this prebuilt module, but DON'T pass in -prebuilt-module-cache-path, it should use the implicit one.
+// RUN: %target-swift-frontend -target %target-cpu-apple-ios13.1-macabi -typecheck -resource-dir %t/ResourceDir -I %t %s -parse-stdlib -module-cache-path %t/ModuleCache -sdk %t
+
+// 5. Make sure we installed a forwarding module in the module cache.
+// RUN: %{python} %S/ModuleCache/Inputs/check-is-forwarding-module.py %t/ModuleCache/PrebuiltModule-*.swiftmodule
+
+import PrebuiltModule
+
+func x<T>(_ x: T) {}
+
+x(InPrebuiltModule.self)