jest-opentelemetry

For the past few months we’ve been building a simple jest/typescript-based high-level language for writing and running integration tests. We're open-sourcing it now and are excited to share it with you: https://github.com/traceloop/jest-opentelemetry Why we built this: - There are many solid frameworks for FE / browser testing, but none with high-level constructs for testing BE flows - We were missing a way to validate side effects for complex backend systems, especially across async queueing systems Our beta version lets you send an API call to a system and then: - Validate (=assert) calls to any downstream microservice in REST and GRPC - Validate queries/writes to DBs Assertions are validated through the use of OpenTelemetry, as we see it as an easy-to-use way to observe how backend systems behave. We’re still early so would love your f

For the past few weeks we've been building an engine that can run system integration tests written in Jest against OpenTelemetry traces. If you ever worked on a system with a few tens of microservices you got to a point where making changes become difficult. You always worry something is going to break. Unit tests are not enough. You need to have a way to test if (for example) the HTTP request to register a user will trigger that welcome e-mail at the end of the flow. So we've build an open source framework where you can simply write such tests. You can assert on database queries, on HTTP requests and responses, and more to come. We use traces from OpenTelemetry to verify that the assertions you wrote in your test are true. Our long term goal is to even generate the tests automatically from those traces. We're still early on so would l

Hey HN, Nir, Gal and Tomer here. Last week, we open-sourced a new testing framework in Typescript on top of Jest and OpenTelemetry (https://github.com/traceloop/jest-opentelemetry). It makes it easy for developers to write end to end tests for a microservice-based system with many side effects. Writing good end-to-end tests is hard. They take a lot of time to write, developers are afraid to change them afterward, and they are flaky and tend to fail for no reason. It shouldn’t be this way. Our beta version lets you: - Test any side-effect in your system: an e-mail’s sent, a database’s updated, a BI event gets reported, etc. - Run your tests and connect to a local or remote test environment. - Open source Apache-2.0 license so anyone can start running tests. We’re still early so would love your feedback and opinions. Feel free to try us out