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CONTRIBUTING.md

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Contributing to Bolero

What to contribute?

Bolero welcomes all types of contributions:

  • Bug reports

  • Feature proposals

  • Bug fixes and feature implementations

Bug reports and feature proposals should be submitted on the issue tracker. Code can be submitted as pull requests. Please post an issue to the tracker and discuss your idea with the community before submitting significant pull requests!

Working with this repository

The instructions below use the PowerShell script build.ps1, which will work on Windows and Unix with .NET SDK installed.

Alternatively, you can restore the dotnet tools with dotnet tool restore, and then build with dotnet run --project .build.

How to build

./build.ps1

How to run the test projects

  • Run the unit tests:

    ./build.ps1 -t test

  • Debug the unit tests in Visual Studio Code:

    1. Run the unit tests in debug mode:

      ./build.ps1 -t test-debug

      (Or in VS Code: "Run Test Task" -> "Unit Tests (debug)")

    2. When the output shows the following:

      Starting test execution, please wait...
Host debugging is enabled. Please attach debugger to testhost process to continue.
Process Id: 24780, Name: dotnet

      Go to the Debug panel, select "Attach" in the dropdown and click ▶️ "Start debugging".

    3. From the popup, select the process with the process id that was printed above.

    4. The tests may still not proceed properly at this point; in this case, click 🔄 "Reconnect" in the debug toolbar.

  • Run the test web application on the client in WebAssembly:

    ./build.ps1 -t run-client

  • Run the test web application on the server side using Blazor.Server:

    ./build.ps1 -t run-server

  • Run the test web application for remoting:

    ./build.ps1 -t run-remoting

Project structure

The project in this repository are structure as follows.

  • src/: The Bolero libraries and tools.

    • Bolero/: The main client-side library. Includes the HTML element and attribute types, Elmish components, client-side Remoting bits, and routing.

    • Bolero.Html/: The client-side library for HTML element builders and attribute functions.

    • Bolero.Server/: The main server-side library. Includes the server-side Remoting bits (ASP.NET Core service).

    • Bolero.Build/: The build task. Strips sigdata/optdata from F# assemblies, to reduce the served content size, and applies CSS scopes.

    • Bolero.Templating/: The Type Provider Design-Time Component for HTML templating.

  • tests: The test projects and unit test suite.

    • Unit/: The automated tests suite.
      Can be run using ./build.ps1 -t test.

    • Unit.Client/: The client application for the automated tests suite.

    • Client/: A test client-side application.
      Can be run using ./build.ps1 -t run-client.

    • Server/: An ASP.NET Core application that serves Client as a server-side Blazor component.
      Can be run using ./build.ps1 -t run-server.

    • Remoting.Client/: A test client-side application that uses remoting.
      Cannot be run standalone, as it requires the corresponding server side.

    • Remoting.Server/: An ASP.NET Core application that serves Remoting.Client as its client side and contains a server implementation for its remoting API.
      Can be run using ./build.ps1 -t run-remoting.

Automated tests

The automated tests are located in the tests/Unit/ and tests/Unit.Client project. They use the following tools:

  • NUnit as the testing framework.

  • Unquote for assertions.

  • FsCheck for property checking.

  • Selenium to run and automate a headless browser.

UI tests are run as follows:

  • A Bolero application is defined in tests/Unit.Client.

    • Test components are defined in *.fs, one file per category.

    • Rendered components for each category are added to the root component in App.fs.

  • The test project proper is tests/Unit.

    • The Bolero application and the browser are started during NUnit setup in Fixture.fs.

    • Corresponding NUnit tests are defined in the Tests folder. They must be defined in the namespace Bolero.Tests.Web for NUnit setup to work properly. They can use NodeFixture to query elements.

So, in summary, a UI test category Foo consists of:

  • A Bolero component defined in tests/Unit.Client/Foo.fs and added to tests/Unit.Client/App.fs;

  • NUnit tests defined in tests/Unit/Tests/Foo.fs, using NodeFixture to query and interact with the component.