diff --git a/test/test-cpp-proto-consistency.sh b/test/test-cpp-proto-consistency.sh
new file mode 100755
index 0000000..04ae53b
--- /dev/null
+++ b/test/test-cpp-proto-consistency.sh
@@ -0,0 +1,52 @@
+#!/usr/bin/env bash
+
+# Copyright 2020-present Open Networking Foundation.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# test-go-proto-consistency.sh
+#
+# This test validates that go proto outputs are committed to git.  It does this
+# by regenerating them and validating whether git thinks they are the same. If
+# they become out of sync, there can be problems for consumers of the protos.
+
+set -eu -o pipefail
+
+git status > /dev/null
+STAGED="$(git diff-index --quiet HEAD -- || echo 'staged')"
+UNTRACKED="$(git ls-files --exclude-standard --others)"
+
+if [ "$STAGED" == "staged" ] || [ "$UNTRACKED" != "" ]; then
+    echo "Please commit or ignore local changes before executing this test"
+    git status
+    exit 1
+fi
+
+# delete and regenerate go protos
+rm -rf cpp/dmi
+make cpp-protos
+
+# Running git status ensures correct git diff-index picks up changes
+git status > /dev/null
+STAGED_POST="$(git diff-index --quiet HEAD -- || echo "staged")"
+UNTRACKED_POST="$(git ls-files --exclude-standard --others)"
+
+if [ "$STAGED_POST" == "staged" ] || [ "$UNTRACKED_POST" != "" ] ; then
+    echo "You have cpp proto build outputs that are not committed."
+    echo "Check git status and commit updated files."
+    git status
+    exit 1
+else
+    echo "Test successful. All cpp proto build outputs are committed"
+    exit 0
+fi