mock
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mock
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An Introduction to Mocking Tools for Elixir
It also maintains separate mocks for each process, so you can continue using async tests. It’s a great alternative to Mock — but that also means the same caveat applies: be careful about what you mock.
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How to ignore a child of a Supervisor not being able to start during tests?
In order to do this you may use mock (which is simple to use), mox (they have pretty compelling arguments why not to mock traditionally), or specifically for http requests, bypass.
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What are some alternatives?
mox - Mocks and explicit contracts in Elixir
bypass - Bypass provides a quick way to create a custom plug that can be put in place instead of an actual HTTP server to return prebaked responses to client requests.
meck - A mocking library for Erlang
httpoison - Yet Another HTTP client for Elixir powered by hackney
Stubr - Stubr is a set of functions helping people to create stubs and spies in Elixir.
hound - Elixir library for writing integration tests and browser automation
ecto_it - Ecto plugin with default configuration for repos for testing different ecto plugins with databases
power_assert - Power Assert in Elixir. Shows evaluation results each expression.
ElixirMock - Creates clean, concurrent, inspectable mocks from elixir modules
Mockery - Simple mocking library for asynchronous testing in Elixir.
plug_test_helpers - A simple testing DSL for Plugs