Improve ci workflow

Author: mischov

.github/workflows/ci.yml

@@ -1,29 +1,38 @@
 name: CI
 
-on: [push, pull_request]
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: ["**"]
 
 jobs:
-  check-elixir-formatting:
-    name: Check Elixir formatting
+  check-formatting:
+    name: Check formatting
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
+
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          components: rustfmt
 
       - name: Set up Elixir
         uses: erlef/setup-beam@v1
         with:
-          otp-version: '25.0'
-          elixir-version: '1.14.0'
+          otp-version: 25.0
+          elixir-version: 1.14.0
 
-      - name: Check formatting
+      - name: Check Rust formatting
+        working-directory: native/meeseeks_html5ever_nif
+        run: cargo fmt --all -- --check
+
+      - name: Check Elixir formatting
         run: mix format --check-formatted
 
+
   test-elixir:
-    name: Test with OTP ${{ matrix.otp }} and Elixir ${{ matrix.elixir }}
-    # TODO change this to ubuntu-latest after OTP 23 is deprecated, see
-    # https://github.com/erlef/setup-beam#compatibility-between-operating-system-and-erlangotp
-    # for compatibility
-    runs-on: ubuntu-20.04
+    name: Test Elixir ${{ matrix.elixir }} / OTP ${{ matrix.otp }}
 
     env:
       MIX_ENV: test
@@ -32,18 +41,17 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - otp: '23.0'
-            elixir: '1.12.0'
-          - otp: '23.0'
-            elixir: '1.14.3'
-          - otp: '24.0'
-            elixir: '1.12.0'
-          - otp: '24.0'
-            elixir: '1.14.3'
-          - otp: '25.0'
-            elixir: '1.13.4'
-          - otp: '25.0'
-            elixir: '1.14.3'
+          - elixir: 1.12.0
+            otp: 23.0
+          - elixir: 1.13.0
+            otp: 24.0
+          - elixir: 1.14.0
+            otp: 25.0
+
+    # TODO change this to ubuntu-latest after OTP 23 is deprecated, see
+    # https://github.com/erlef/setup-beam#compatibility-between-operating-system-and-erlangotp
+    # for compatibility
+    runs-on: ubuntu-20.04
 
     steps:
       - uses: actions/checkout@v3
@@ -58,36 +66,40 @@ jobs:
           elixir-version: ${{ matrix.elixir }}
 
       - name: Retrieve cached Rust dependencies
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         id: cargo-cache
         with:
           path: ~/.cargo
           key: ${{ runner.os }}-${{ matrix.otp }}-${{ matrix.elixir }}-cargo-${{ hashFiles(format('{0}{1}', github.workspace, '/mix.lock')) }}
           restore-keys: |
              ${{ runner.os }}-${{ matrix.otp }}-${{ matrix.elixir }}-cargo-
+
       - name: Retrieve cached Elixir dependencies
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         id: mix-cache
         with:
           path: deps
           key: ${{ runner.os }}-${{ matrix.otp }}-${{ matrix.elixir }}-mix-${{ hashFiles(format('{0}{1}', github.workspace, '/mix.lock')) }}
           restore-keys: |
             ${{ runner.os }}-${{ matrix.otp }}-${{ matrix.elixir }}-mix-
+
       - name: Retrieve cached Elixir build
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         id: build-cache
         with:
           path: _build
           key: ${{ runner.os }}-${{ matrix.otp }}-${{ matrix.elixir }}-build-${{ github.sha }}
           restore-keys: |
             ${{ runner.os }}-${{ matrix.otp }}-${{ matrix.elixir }}-build-
+
       - name: Install Elixir dependencies
         if: steps.mix-cache.outputs.cache-hit != 'true'
         run: |
           mix local.rebar --force
           mix local.hex --force
           mix deps.get
           mix deps.compile
+
       - name: Compile Elixir
         run: mix compile