Validate the source code has the expected version

Author: farleyb-amazon

codebuild/release/test-release.yml

@@ -16,11 +16,10 @@ phases:
       python: latest
   pre_build:
     commands:
-      - git checkout $BRANCH
-      - CURRENT_COMMIT=$(git rev-parse --short HEAD)
+      - git checkout $COMMIT_ID
       - |
-        if expr "${CURRENT_COMMIT}" != ${COMMIT_ID}; then
-          echo "HEAD of repository commit (${CURRENT_COMMIT}) did not match expected commit (${COMMIT_ID}), stopping"
+        if [[ ! $(grep "__version__ = \"${VERSION}\"" src/aws_encryption_sdk/identifiers.py) ]]; then
+          echo "identifiers.py does not contain expected version string ${version}, stopping"
           exit 1;
         fi
   build: