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actions

A set of Github Actions for working with 3DS applications and the rust3ds toolchain.

It's recommended to use the test-runner crate from ctru-rs when working with these actions, in order to get useful test output on failures.

Components

  • setup: action for setting up the Rust 3DS toolchain in workflows
  • run-tests: action for running test executables with Citra in workflows

Usage

This example shows the default value for each of the inputs.

jobs:
  test:
    runs-on: ubuntu-latest
    container:
      image: devkitpro/devkitarm
      volumes:
        # This is required so the test action can `docker run` the runner:
        - '/var/run/docker.sock:/var/run/docker.sock'

    steps:
      - name: Checkout branch
        uses: actions/checkout@v4

      - name: Setup Rust3DS toolchain
        uses: rust3ds/actions/setup@v1
        with:
          # Optionally use a more specific nightly toolchain here if desired
          toolchain: nightly

      - name: Build and run tests
        uses: rust3ds/actions/run-tests@v1
        with:
          # Optionally add arguments to pass to `cargo 3ds test`
          args: ''
          # Optionally set the name of the built test-runner docker image
          runner-image: test-runner-3ds
          # Optionally change to a given directory before running tests. Note
          # that this should use the environment variable ${GITHUB_WORKSPACE}
          # rather than ${{ github.workspace }} to avoid the issue described in
          # https://github.com/actions/runner/issues/2058
          working-directory: ${GITHUB_WORKSPACE}

See ci.yml to see a full lint and test workflow using these actions (including uploading output artifacts from the tests).

Caveats

  • Since the custom test runner runs as part of cargo test, it won't be able to find a 3dsx that hasn't built yet. cargo-3ds doesn't build 3dsx executables until after the cargo command it runs internally, so this means that tests can't depend on any features of the 3dsx (like embedded romFS). A workaround for this is to simply build the tests as a separate step before running them, after which the runner will be able to find the 3dsx.