test on all platforms

.github/actions/poetry-install/action.yml

@@ -0,0 +1,41 @@
+name: Poetry Install
+description: Installs Python dependencies using Poetry
+
+inputs:
+  poetry-version:
+    description: The version of Poetry to install
+    type: string
+    required: true
+  python-version:
+    description: The version of Python to use
+    type: string
+    required: true
+
+defaults:
+  run:
+    shell: bash
+
+runs:
+  using: composite
+  steps:
+    - name: Install Poetry
+      shell: bash
+      run: |
+        pipx install poetry==${{ inputs.poetry-version}}
+
+    - name: Set up Python
+      uses: actions/setup-python@v5
+      with:
+        python-version: ${{ inputs.python-version }}
+        cache: 'poetry'
+        cache-dependency-path: poetry.lock
+
+    - name: Set Poetry environment
+      shell: bash
+      run: |
+        poetry env use ${{ inputs.python-version }}
+
+    - name: Install project dependencies
+      shell: bash
+      run: |
+        poetry install --no-interaction --no-root

.github/workflows/_tests-matrix.yml

@@ -0,0 +1,34 @@
+# Reusable workflow consumed by ci.yml; used to share a single matrix across jobs.
+on:
+  workflow_call:
+    inputs:
+      runner:
+        required: true
+        type: string
+      python-version:
+        required: true
+        type: string
+      poetry-version:
+        required: true
+        type: string
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  tests:
+    name: Run tests (Python ${{ matrix.python-version }}), Poetry ${{ matrix.poetry-version }}, Platform ${{ matrix.runner }})
+    runs-on: ${{ inputs.runner }}
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - uses: ./.github/actions/poetry-install
+        with:
+          python-version: ${{ inputs.python-version }}
+          poetry-version: ${{ inputs.poetry-version }}
+
+      - name: Run unit tests
+        run: |
+          poetry run pytest spotify_sync/tests

.github/workflows/ci.yml

@@ -1,42 +1,58 @@
 name: CI
 on:
   push:
-    branches: [main]
+    branches:
+      - main
   pull_request:
+    branches:
+      - main
+
+defaults:
+  run:
+    shell: bash
 
 jobs:
-  build-and-test:
-    name: Build and test
+  lint:
+    name: Lint
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        python-version: ['3.8', '3.9', '3.10', '3.11', '3.11']
-
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
 
-      - name: Install Poetry
-        run: |
-          pipx install poetry==1.8.4
-
-      - name: Set up Python
-        uses: actions/setup-python@v5
+      - uses: ./.github/actions/poetry-install
         with:
-          python-version: ${{ matrix.python-version }}
-          cache: 'poetry'
-          cache-dependency-path: poetry.lock
-
-      - name: Set Poetry environment
-        run: |
-          poetry env use ${{ matrix.python-version }}
-
-      - name: Install project dependencies
-        run: |
-          poetry install --no-interaction --no-root
+          python-version: '3.12'
+          poetry-version: '1.8.4'
 
       - name: Code Quality
-        run: poetry run black . --check
-
-      - name: Unit Tests
-        run: poetry run pytest spotify_sync/tests
+        run: |
+          poetry install black 
+          poetry run black . --check
+
+  unit-tests:
+    name: "Unit tests (Python ${{ matrix.python-version }}, Poetry ${{ matrix.poetry-version }}, Platform ${{ matrix.os.name }})"
+    uses: ./.github/workflows/_tests-matrix.yml
+    needs: lint
+    with:
+        runner: ${{ matrix.os.image }}
+        python-version: ${{ matrix.python-version }}
+        poetry-version: '1.8.4'
+    strategy:
+      matrix:
+        os:
+          - name: Ubuntu
+            image: ubuntu-22.04
+          - name: macOS x86_64
+            image: macos-13
+          - name: Windows
+            image: windows-2022
+          - name: macOS aarch64
+            image: macos-14
+        python-version:
+          - '3.8'
+          - '3.9'
+          - '3.10'
+          - '3.11'
+          - '3.11'
+          - '3.12'
+      fail-fast: false