Untested RPC timeouts strike again. Every service needs integration tests that exercise timeouts. Some config and code can't be exercised in automated tests a

Untested RPC timeouts strike again. Every service needs integration tests that exercise timeouts. Some config and code can't be exercised in automated tests and needs regular disaster readiness testing. Service client libraries need unit tests that show the library returning expected errors for all the failure scenarios: missing config, name lookup failure, unreachable, refusing connections, closing connections, returning error responses, returning garbage responses, refusing writes, responding with high latency, and responding with low throughput.