name: CI

on:
  push:
    branches: [master]
  pull_request:

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

env:
  CARGO_TERM_COLOR: always
  RUSTFLAGS: "-D warnings"

jobs:
  ci:
    name: fmt + clippy + test
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      # Channel is pinned via rust-toolchain.toml (1.86.0); we just
      # ensure rustfmt + clippy are installed for that exact version.
      - uses: dtolnay/rust-toolchain@1.86.0
        with:
          components: rustfmt, clippy

      - uses: Swatinem/rust-cache@v2

      - name: cargo fmt --check
        run: cargo fmt --all -- --check

      - name: cargo clippy
        run: cargo clippy --all-targets --no-deps

      - name: cargo test
        run: cargo test --all-targets
