Merge pull request #33638 from nkcsgexi/test-use-interface-for-module

[test] ABIChecker: add a test for -use-interface-for-module flag

Author: nkcsgexi

test/api-digester/use-interface-for.swift

@@ -0,0 +1,20 @@
+// REQUIRES: VENDOR=apple
+
+// RUN: %empty-directory(%t.mod)
+// RUN: %empty-directory(%t.sdk)
+// RUN: %empty-directory(%t.module-cache)
+
+// RUN: echo "public func foo() {}" > %t.swift
+
+// RUN: %target-swift-frontend -emit-module -emit-module-interface-path %t.mod/cake.swiftinterface %t.swift %clang-importer-sdk-nosource -parse-as-library -enable-library-evolution -disable-objc-attr-requires-foundation-module -module-cache-path %t.module-cache -emit-module-path %t.mod/cake.swiftmodule -module-name cake -swift-version 5
+
+// Step 1: we should be able to load if we prefer cake.swiftinterface
+// RUN: %api-digester -dump-sdk -print-module -module cake -I %t.mod -sdk %clang-importer-sdk-path -module-cache-path %t.module-cache -o %t.json -abi -abort-on-module-fail -use-interface-for-module cake
+
+// RUN: echo "Swift Syntax Error" >> %t.mod/cake.swiftinterface
+
+// Step 2: we shouldn't be able to load if we prefer cake.swiftinterface and cake.swiftinterface is broken
+// RUN: not %api-digester -dump-sdk -print-module -module cake -I %t.mod -sdk %clang-importer-sdk-path -module-cache-path %t.module-cache -o %t.json -abi -abort-on-module-fail -use-interface-for-module cake
+
+// Step 3: we should be able to load if we don't prefer cake.swiftinterface
+// RUN: %api-digester -dump-sdk -print-module -module cake -I %t.mod -sdk %clang-importer-sdk-path -module-cache-path %t.module-cache -o %t.json -abi -abort-on-module-fail