diff --git a/runtime/core/portable_type/test/CMakeLists.txt b/runtime/core/portable_type/test/CMakeLists.txt
new file mode 100644
index 00000000000..3ea05677c3d
--- /dev/null
+++ b/runtime/core/portable_type/test/CMakeLists.txt
@@ -0,0 +1,46 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
+# ### Editing this file ###
+#
+# This file should be formatted with
+# ~~~
+# cmake-format -i CMakeLists.txt
+# ~~~
+# It should also be cmake-lint clean.
+#
+
+cmake_minimum_required(VERSION 3.19)
+project(runtime_core_portable_type_test)
+
+# Use C++11 for test.
+set(CMAKE_CXX_STANDARD 11)
+
+set(EXECUTORCH_ROOT ${CMAKE_CURRENT_SOURCE_DIR}/../../../..)
+
+include(${EXECUTORCH_ROOT}/build/Utils.cmake)
+
+# Find prebuilt executorch library
+find_package(executorch CONFIG REQUIRED)
+
+enable_testing()
+find_package(GTest CONFIG REQUIRED)
+
+# Let files say "include <executorch/path/to/header.h>".
+set(_common_include_directories
+    ${EXECUTORCH_ROOT}/..
+)
+target_include_directories(executorch INTERFACE ${_common_include_directories})
+
+set(_test_srcs optional_test.cpp executor_tensor_test.cpp half_test.cpp
+               scalar_test.cpp tensor_impl_test.cpp
+)
+
+add_executable(runtime_core_portable_type_test ${_test_srcs})
+target_link_libraries(
+  runtime_core_portable_type_test GTest::gtest GTest::gtest_main executorch
+)
+add_test(ExecuTorchTest runtime_core_portable_type_test)
diff --git a/test/run_oss_cpp_tests.sh b/test/run_oss_cpp_tests.sh
new file mode 100644
index 00000000000..dcc8b4d27f6
--- /dev/null
+++ b/test/run_oss_cpp_tests.sh
@@ -0,0 +1,23 @@
+#!/bin/bash
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
+set -ex
+
+build_executorch() {
+  cmake . -DCMAKE_INSTALL_PREFIX=cmake-out -DEXECUTORCH_BUILD_GTESTS=ON -Bcmake-out
+  cmake --build cmake-out -j9 --target install
+}
+
+build_and_run_test() {
+  local test_dir=$1
+  cmake "${test_dir}" -Bcmake-out/"${test_dir}" -DCMAKE_INSTALL_PREFIX=cmake-out
+  cmake --build cmake-out/"${test_dir}"
+  for t in $(cmake-out/"${test_dir}"/*test); do ./"$t"; done
+}
+
+build_executorch
+build_and_run_test runtime/core/portable_type/test/