Herve37
We’re evaluating API mocking tools for OpenAPI-based projects and would love to hear what other teams are using.
We’re particularly interested in:
- OpenAPI compatibility
- Mock server capabilities
- Easy collaboration
- Integration with testing workflows
What has worked best for your team?
Where Next?
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lud
Hello,
What are you trying to mock in elixir? External APIs or your own API?
Lewis
Bypass - for HTTP
Mimic - for in process APIs, things that [may] call modules which HTTP
warmwaffles
I have been using
ShamoverBypassfor a while now.Mimicfor quick mockingMoxoccasionally.When testing with something that uses
Req, I just use the built inReq.Testthings. Super handy.karlosmid
Efx moves mocking in new direction: Efx - A library to declaratively write testable effects | Elixir Forum
I used in one of my pet projects
dimitarvp
What were your impressions?
karlosmid
Hi @dimitarvp, biggest win compared to Mox (up to Efx the best option) is no hassle with configurations and precondition that boundary needs to have behaviour. In testing, you
bindyour boundary functions and you are good to go.funboy
Mimic works in the same way too
Unique power of Efx is
dimitarvp
I was about to say but got beaten to it: how is this different than Mimic?
Though I have to say: explicit or implicit marking of effects is very, VERY, welcome. Don’t get me wrong.
krasenyp
I glanced over Efx and yeah, just as I expected, it’s another way to NOT do proper dependency injection. Why are we so afraid to code against protocols and pass around structs which implement them?
funboy
protocols are about polymorphism based on the struct type, whereas we’re discussing behavior that depends on the environment. For example, in test env we may want to avoid making real HTTP calls or spawning real processes.
Mox is a great fit when you’re abstracting an external dependency behind a behavior. But for testing internal implementations, I find e.g. Mimic much more convenient. It lets you mock internal modules without adding extra behaviors, configuration, or maintenance overhead