famedly / Meow-Coverage

An integrated code coverage visualiser. Why use a paid service when you can RIIR?

Meow! Coverage

A GitHub-integrated code coverage visualiser, written in Rust.

Getting Started

Here are two sample GitHub action workflows, one for handling PRs, and one for handling new commits in main.

Pull Request Sample

on: [pull_request]

jobs:
  pull_coverage:
    name: Generate Coverage
    permissions:
      contents: read
      issues: write
      pull-requests: write
    runs-on: ubuntu-latest
    steps:
      - name: Checkout base repository
        uses: actions/checkout@v3
        with:
          ref: ${{ github.event.pull_request.base.ref }}
          repository: ${{ github.event.pull_request.base.full_name }}
          path: base

      - name: Checkout current repository
        uses: actions/checkout@v3
        with:
          path: head

      - name: Install toolchain
        run: curl https://sh.rustup.rs -sSf | sh -s -- --profile minimal --default-toolchain nightly --component llvm-tools-preview -y

      - name: Install cargo-llvm-cov
        run: cargo install cargo-llvm-cov

      - name: Run cargo-llvm-cov on base
        run: cargo llvm-cov --lcov --output-path $GITHUB_WORKSPACE/old-lcov.info
        working-directory: base

      - name: Run cargo-llvm-cov on current
        run: cargo llvm-cov --lcov --output-path $GITHUB_WORKSPACE/new-lcov.info
        working-directory: head

      - name: Meow Coverage
        id: coverage-report
        uses: famedly/meow-coverage@main
        with:
          new-lcov-file: 'new-lcov.info'
          old-lcov-file: 'old-lcov.info'
          source-prefix: 'src/'
          pr-number: ${{ github.event.pull_request.number }}
          repo-name: ${{ github.repository }}
          commit-id: ${{ github.event.pull_request.head.sha }}
          github-token: ${{ secrets.GITHUB_TOKEN }}

Change to main Branch Sample

on:
  push:
    branches:
      - main

jobs:
  main_coverage:
    name: Generate Main Coverage
    permissions:
      contents: write
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v3

      - name: Install toolchain
        run: curl https://sh.rustup.rs -sSf | sh -s -- --profile minimal --default-toolchain nightly --component llvm-tools-preview -y

      - name: Install cargo-llvm-cov
        run: cargo install cargo-llvm-cov

      - name: Run cargo-llvm-cov on main branch
        run: cargo llvm-cov --lcov --output-path $GITHUB_WORKSPACE/lcov.info

      - name: Meow Coverage
        id: coverage-report
        uses: famedly/meow-coverage@main
        with:
          new-lcov-file: 'lcov.info'
          source-prefix: 'src/'
          repo-name: ${{ github.repository }}
          commit-id: ${{ github.event.after }}
          github-token: ${{ secrets.GITHUB_TOKEN }}

Lints

We have plenty of lints in lints.toml that we use. Cargo currently does not natively support an extra file for lints, so we use cargo-lints. To check everything with our lints, run this locally:

cargo lints clippy --workspace --all-targets

and this in your IDE:

cargo lints clippy --workspace --all-targets --message-format=json

A few lints are commented out in lints.toml. This is because they should not be enabled by default, because e.g. they have false positives. However, they can be very useful sometimes.

Pre-commit usage

1. If not installed, install with your package manager, or pip install --user pre-commit
2. Run pre-commit autoupdate to update the pre-commit config to use the newest template
3. Run pre-commit install to install the pre-commit hooks to your local environment

---

Famedly

This project is part of the source code of Famedly.

We think that software for healthcare should be open source, so we publish most parts of our source code at gitlab.com/famedly.

Please read CONTRIBUTING.md for details on our code of conduct, and the process for submitting pull requests to us.

For licensing information of this project, have a look at the LICENSE file within the repository.

If you compile the open source software that we make available to develop your own mobile, desktop or embeddable application, and cause that application to connect to our servers for any purposes, you have to aggree to our Terms of Service. In short, if you choose to connect to our servers, certain restrictions apply as follows:

• You agree not to change the way the open source software connects and interacts with our servers
• You agree not to weaken any of the security features of the open source software
• You agree not to use the open source software to gather data
• You agree not to use our servers to store data for purposes other than the intended and original functionality of the Software
• You acknowledge that you are solely responsible for any and all updates to your software

No license is granted to the Famedly trademark and its associated logos, all of which will continue to be owned exclusively by Famedly GmbH. Any use of the Famedly trademark and/or its associated logos is expressly prohibited without the express prior written consent of Famedly GmbH.

For more information take a look at Famedly.com or contact us by [e-mail]