Uncomment error handling tests

Author: hlopko

test/Interop/Cxx/templates/Inputs/class-templates.h renamed to test/Interop/Cxx/templates/Inputs/class-template-instantiation-errors.h

@@ -1,5 +1,5 @@
-#ifndef TEST_INTEROP_CXX_TEMPLATES_INPUTS_CLASS_TEMPLATES_H
-#define TEST_INTEROP_CXX_TEMPLATES_INPUTS_CLASS_TEMPLATES_H
+#ifndef TEST_INTEROP_CXX_TEMPLATES_INPUTS_CLASS_TEMPLATE_INSTANTIATION_ERRORS_H
+#define TEST_INTEROP_CXX_TEMPLATES_INPUTS_CLASS_TEMPLATE_INSTANTIATION_ERRORS_H
 
 template<class T>
 struct MagicWrapper {
@@ -19,4 +19,4 @@ struct CannotBeInstantianted {
   }
 };
 
-#endif // TEST_INTEROP_CXX_TEMPLATES_INPUTS_CLASS_TEMPLATES_H
+#endif // TEST_INTEROP_CXX_TEMPLATES_INPUTS_CLASS_TEMPLATE_INSTANTIATION_ERRORS_H

test/Interop/Cxx/templates/Inputs/module.modulemap

@@ -42,8 +42,8 @@ module LinkageOfSwiftSymbolsForImportedTypes {
   header "linkage-of-swift-symbols-for-imported-types.h"
 }
 
-module ClassTemplates {
-  header "class-templates.h"
+module ClassTemplateInstantiationErrors {
+  header "class-template-instantiation-errors.h"
 }
 
 module ClassTemplateVariadic {

test/Interop/Cxx/templates/class-instantiation-error-handling.swift

@@ -0,0 +1,19 @@
+// RUN: not %target-swift-emit-sil %s -I %S/Inputs -enable-cxx-interop 2>&1 | %FileCheck %s
+
+import ClassTemplateInstantiationErrors
+import StdlibUnittest
+
+var TemplatesTestSuite = TestSuite("TemplatesTestSuite")
+
+// CHECK: class-instantiation-error-handling.swift:10:18: error: only C++ types supported
+TemplatesTestSuite.test("swift-template-arg-not-supported") {
+  var magicInt = MagicWrapper<String>(t: "asdf")
+}
+
+// CHECK: class-template-instantiation-errors.h:18:7: error: no member named 'doesNotExist' in 'IntWrapper'
+// CHECK: class-template-instantiation-errors.h:16:8: note: in instantiation of member function 'CannotBeInstantianted<IntWrapper>::willFailInstantiating' requested here
+TemplatesTestSuite.test("clang-errors-reported-on-instantiation") {
+    var _ = CannotBeInstantianted<IntWrapper>()
+}
+
+runAllTests()