name: Rust

on:
  push:
    branches: [ '*' ]
  pull_request:
    branches: [ '*' ]

env:
  CARGO_TERM_COLOR: always

jobs:
  test-u32:
    name: Test u32 backend
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2
    - uses: actions-rs/toolchain@v1
      with:
        profile: minimal
        toolchain: stable
        override: true
    - uses: actions-rs/cargo@v1
      with:
        command: test
        args: --no-default-features --features "std u32_backend"

  test-u64:
    name: Test u64 backend
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2
    - uses: actions-rs/toolchain@v1
      with:
        profile: minimal
        toolchain: stable
        override: true
    - uses: actions-rs/cargo@v1
      with:
        command: test
        args: --no-default-features --features "std u64_backend"

  test-simd:
    name: Test simd backend (nightly)
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2
    - uses: actions-rs/toolchain@v1
      with:
        profile: minimal
        toolchain: nightly
        override: true
    - uses: actions-rs/cargo@v1
      with:
        command: test
        args: --no-default-features --features "std simd_backend"

  test-defaults-serde:
    name: Test default feature selection and serde
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2
    - uses: actions-rs/toolchain@v1
      with:
        profile: minimal
        toolchain: stable
        override: true
    - uses: actions-rs/cargo@v1
      with:
        command: test
        args: --features "serde"

  test-alloc-u32:
    name: Test no_std+alloc with u32 backend
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2
    - uses: actions-rs/toolchain@v1
      with:
        profile: minimal
        toolchain: stable
        override: true
    - uses: actions-rs/cargo@v1
      with:
        command: test
        args: --lib --no-default-features --features "alloc u32_backend"

  nightly:
    name: Test nightly compiler
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2
    - uses: actions-rs/toolchain@v1
      with:
        profile: minimal
        toolchain: nightly
        override: true
    - uses: actions-rs/cargo@v1
      with:
        command: test
        args: --features "nightly"

  msrv:
    name: Current MSRV is 1.56.1
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2
    # First run `cargo +nightly -Z minimal-verisons check` in order to get a
    # Cargo.lock with the oldest possible deps
    - uses: actions-rs/toolchain@v1
      with:
        profile: minimal
        toolchain: nightly
        override: true
    - run: cargo -Z minimal-versions check --no-default-features --features "fiat_u64_backend,serde"
    # Now check that `cargo build` works with respect to the oldest possible
    # deps and the stated MSRV
    - uses: actions-rs/toolchain@v1
      with:
        profile: minimal
        toolchain: 1.56.1
        override: true
    - run: cargo build --no-default-features --features "fiat_u64_backend,serde"

  bench:
    name: Check that benchmarks compile
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2
    - uses: actions-rs/toolchain@v1
      with:
        profile: minimal
        toolchain: stable
        override: true
    - uses: actions-rs/cargo@v1
      with:
        command: bench
        # This filter selects no benchmarks, so we don't run any, only build them.
        args: "nonexistentbenchmark"