Add preprocessor-only test for submodule imports
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145490 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Modules/submodules.cpp b/test/Modules/submodules.cpp
index 6d541f6..fd1426d 100644
--- a/test/Modules/submodules.cpp
+++ b/test/Modules/submodules.cpp
@@ -1,4 +1,5 @@
// RUN: rm -rf %t
+// RUN: %clang_cc1 -Eonly -fmodule-cache-path %t -fauto-module-import -I %S/Inputs/submodules %s -verify
// RUN: %clang_cc1 -fmodule-cache-path %t -fauto-module-import -I %S/Inputs/submodules %s -verify
__import_module__ std.vector;