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actix-website/content/docs/testing.md
2020-09-12 16:21:54 +01:00

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---
title: Testing
menu: docs_advanced
weight: 215
---
# Testing
Every application should be well tested. Actix-web provides tools to perform unit and
integration tests.
# Unit Tests
For unit testing, actix-web provides a request builder type.
[*TestRequest*][testrequest] implements a builder-like pattern. You can generate a
`HttpRequest` instance with `to_http_request()` and call your handler with it.
{{< include-example example="testing" file="main.rs" section="unit-tests" >}}
# Integration tests
There are a few methods for testing your application. Actix-web can be used
to run the application with specific handlers in a real HTTP server.
`TestRequest::get()`, `TestRequest::post()` and other
methods can be used to send requests to the test server.
To create a `Service` for testing, use the `test::init_service` method which accepts a
regular `App` builder.
> Check the [API documentation][actixdocs] for more information.
{{< include-example example="testing" file="integration_one.rs" section="integration-one" >}}
If you need more complex application configuration, testing should be very similar to creating
the normal application. For example, you may need to initialize application state. Create an
`App` with a `data` method and attach state just like you would from a normal application.
{{< include-example example="testing" file="integration_two.rs" section="integration-two" >}}
# Stream response tests
If you need to test stream generation, it would be enough to call `take_body()` and convert a
resulting [*ResponseBody*][responsebody] into a future and execute it, for example when testing
[*Server Sent Events*][serversentevents].
{{< include-example example="testing" file="stream_response.rs" section="stream-response" >}}
[serversentevents]: https://developer.mozilla.org/en-US/docs/Web/API/Server-sent_events/Using_server-sent_events
[responsebody]: https://docs.rs/actix-web/3/actix_web/body/enum.ResponseBody.html
[actixdocs]: https://docs.rs/actix-web/3/actix_web/test/index.html
[testrequest]: https://docs.rs/actix-web/3/actix_web/test/struct.TestRequest.html