automerge: 05e2ada * commit '05e2ada58a79994170e8e98ff9a619715cdddc28': Change tests against INVALID_SUBSCRIPTION_ID to use isValidSubscriptionId.
automerge: 05e2ada * commit '05e2ada58a79994170e8e98ff9a619715cdddc28': Change tests against INVALID_SUBSCRIPTION_ID to use isValidSubscriptionId.