automerge: fc748fe
* commit 'fc748fe9da449e427887c6d2381f9bd4462de56f':
Change tests against INVALID_SUBSCRIPTION_ID to use isValidSubscriptionId.
automerge: fc748fe
* commit 'fc748fe9da449e427887c6d2381f9bd4462de56f':
Change tests against INVALID_SUBSCRIPTION_ID to use isValidSubscriptionId.