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https://github.com/martincostello/dotnet-minimal-api-integration-testing

An example of integration testing ASP.NET Core Minimal hosting and APIs
https://github.com/martincostello/dotnet-minimal-api-integration-testing

aspnetcore dotnet testing

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An example of integration testing ASP.NET Core Minimal hosting and APIs

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# Integration Testing ASP.NET Core Minimal APIs



[![Build status](https://github.com/martincostello/dotnet-minimal-api-integration-testing/workflows/build/badge.svg?branch=main&event=push)](https://github.com/martincostello/dotnet-minimal-api-integration-testing/actions?query=workflow%3Abuild+branch%3Amain+event%3Apush)

[![codecov](https://codecov.io/gh/martincostello/dotnet-minimal-api-integration-testing/branch/main/graph/badge.svg)](https://codecov.io/gh/martincostello/dotnet-minimal-api-integration-testing)



## Introduction



This sample project demonstrates techniques you can use for integration testing

an ASP.NET Core web application that uses the [minimal APIs] feature.



[minimal APIs]: https://devblogs.microsoft.com/aspnet/asp-net-core-updates-in-net-6-preview-4/#introducing-minimal-apis



The system-under-test used by the sample implements a simple Todo list

application with ASP.NET Core using the following technologies:



* [Minimal APIs]

* [EFCore] with [SQLite]

* [GitHub OAuth] authentication

* [Razor Pages]

* [TypeScript]



[EFCore]: https://docs.microsoft.com/en-us/ef/core/

[GitHub OAuth]: https://github.com/aspnet-contrib/AspNet.Security.OAuth.Providers/blob/dev/docs/github.md

[Razor Pages]: https://docs.microsoft.com/en-us/aspnet/core/razor-pages/

[SQLite]: https://docs.microsoft.com/en-us/ef/core/providers/sqlite/

[TypeScript]: https://www.typescriptlang.org/docs/handbook/typescript-in-5-minutes-oop.html



The tests show how you can write integration tests for the [API] and [User

Interface] layers of an application that can help you get good coverage of the

system-under-test, as well as help give you confidence that the changes you make

to an application are ready to ship to a production system.



The tests include demonstrations of the use of the following open source

libraries and technologies:



* [coverlet]

* [HttpClientFactory]

* [HttpClient Interception]

* [Playwright]

* [ReportGenerator]

* [Shouldly]

* [WebApplicationFactory<T>]

* [xunit]

* [xunit Logging]



[API]: https://github.com/martincostello/dotnet-minimal-api-integration-testing/blob/main/tests/TodoApp.Tests/ApiTests.cs

[coverlet]: https://github.com/coverlet-coverage/coverlet

[HttpClientFactory]: https://docs.microsoft.com/en-us/dotnet/architecture/microservices/implement-resilient-applications/use-httpclientfactory-to-implement-resilient-http-requests

[HttpClient Interception]: https://github.com/justeat/httpclient-interception

[Playwright]: https://playwright.dev/dotnet/

[ReportGenerator]: https://github.com/danielpalme/ReportGenerator

[Shouldly]: https://shouldly.io/

[User Interface]: https://github.com/martincostello/dotnet-minimal-api-integration-testing/blob/main/tests/TodoApp.Tests/UITests.cs

[WebApplicationFactory<T>]: https://docs.microsoft.com/en-us/aspnet/core/test/integration-tests

[xunit]: https://xunit.net/

[xunit Logging]: https://github.com/martincostello/xunit-logging



## Debugging



To debug the application locally outside of the integration tests, you will need

to [create a GitHub OAuth app] to obtain secrets for the `GitHub:ClientId` and

`GitHub:ClientSecret` [options] so that the [OAuth user authentication] works and

you can log into the Todo App UI.



> 💡 When creating the GitHub OAuth app, use `https://localhost:50001/sign-in-github`

as the _Authorization callback URL_.

>

> ⚠️ Do not commit GitHub OAuth secrets to source control. Configure them

with [User Secrets] instead.



[create a GitHub OAuth app]: https://docs.github.com/en/developers/apps/building-oauth-apps/creating-an-oauth-app

[OAuth user authentication]: https://docs.microsoft.com/en-us/aspnet/core/security/authentication/social/?view=aspnetcore-5.0&tabs=visual-studio

[options]: https://github.com/martincostello/dotnet-minimal-api-integration-testing/blob/1cd99029a9e3af57ab2fe1335b43e298efb65c09/src/TodoApp/appsettings.json#L10-L11

[User Secrets]: https://docs.microsoft.com/en-us/aspnet/core/security/app-secrets



## Building and Testing



Compiling the application yourself requires Git and the

[.NET SDK](https://www.microsoft.com/net/download/core "Download the .NET SDK")

to be installed (version `9.0.100` or later).



To build and test the application locally from a terminal/command-line, run the

following set of commands:



```powershell

git clone https://github.com/martincostello/dotnet-minimal-api-integration-testing.git

cd dotnet-minimal-api-integration-testing

./build.ps1

```



## Feedback



Any feedback or issues can be added to the issues for this project in

[GitHub](https://github.com/martincostello/dotnet-minimal-api-integration-testing/issues "Issues for this project on GitHub.com").



## Acknowledgements



Thanks to David Fowler ([@davidfowl](https://github.com/davidfowl)) from the

ASP.NET Core team for helping out with resolving issues with Minimal Actions

found from testing this sample with the ASP.NET Core 6 pre-releases!



## Repository



The repository is hosted in

[GitHub](https://github.com/martincostello/dotnet-minimal-api-integration-testing "This project on GitHub.com"):



## License



This project is licensed under the

[Apache 2.0](http://www.apache.org/licenses/LICENSE-2.0.txt "The Apache 2.0 license")

license.