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45 lines
2.5 KiB
Markdown
45 lines
2.5 KiB
Markdown
---
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title: Testing
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---
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import CodeBlock from "@site/src/components/code_block.js";
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# Testing
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Every application should be well tested. Actix Web provides tools to perform integration tests against your applications and unit test tools for custom extractors and middleware.
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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 handlers or extractors with it. Also see
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## Integration Testing For Applications
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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.
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`TestRequest::get()`, `TestRequest::post()` and other methods can be used to send requests to the test server.
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To create a `Service` for testing, use the `test::init_service` method which accepts a regular `App` builder.
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> Check the [API documentation][actixdocs] for more information.
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<CodeBlock example="testing" file="integration_one.rs" section="integration-one" />
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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.
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<CodeBlock example="testing" file="integration_two.rs" section="integration-two" />
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## Stream Response Testing
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If you need to test stream generation, it would be enough to call [`into_parts()`][resintoparts] and convert the resulting body into a future and execute it, for example when testing [_Server Sent Events_][serversentevents].
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<CodeBlock example="testing" file="stream_response.rs" section="stream-response" />
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## Unit Testing Extractors
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Unit testing has pretty limited value for applications, but can be useful when developing extractors, middleware, and responders. Given that, calling directly into handler functions **which are defined stand-alone, without using routing macros** (like `#[get("/")]`) is possible if you want to make assertions on custom `Responder`s.
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<CodeBlock example="testing" file="main.rs" section="unit-tests" />
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[serversentevents]: https://developer.mozilla.org/en-US/docs/Web/API/Server-sent_events/Using_server-sent_events
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[resintoparts]: https://docs.rs/actix-web/4/actix_web/struct.HttpResponse.html#method.into_parts
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[actixdocs]: https://docs.rs/actix-web/4/actix_web/test/index.html
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[testrequest]: https://docs.rs/actix-web/4/actix_web/test/struct.TestRequest.html
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