added macOs and Windows jobs

Author: mattkjames7

.github/workflows/ci.yml

@@ -7,7 +7,7 @@ permissions:
   contents: read
 
 jobs:
-  build-and-test:
+  ubuntu-build-and-test:
     runs-on: ubuntu-latest
 
     steps:
@@ -37,3 +37,79 @@ jobs:
           MPLCONFIGDIR: ${{ runner.temp }}/matplotlib
         run: |
           "$RUNNER_TEMP/spicedmodel-test-venv/bin/python" -m pytest "$GITHUB_WORKSPACE/tests"
+
+  macos-build-and-test:
+    runs-on: macos-latest
+
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          submodules: recursive
+
+      - name: Set up Python
+        uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
+        with:
+          python-version: "3.14"
+
+      - name: Install OpenMP
+        run: |
+          brew install libomp
+          echo "OpenMP_ROOT=$(brew --prefix libomp)" >> "$GITHUB_ENV"
+
+      - name: Build distributions
+        run: |
+          python -m pip install build
+          python -m build .
+
+      - name: Install wheel into test environment
+        run: |
+          python -m venv "$RUNNER_TEMP/spicedmodel-test-venv"
+          "$RUNNER_TEMP/spicedmodel-test-venv/bin/python" -m pip install dist/*.whl pytest
+
+      - name: Run installed-package tests
+        working-directory: ${{ runner.temp }}
+        env:
+          MPLCONFIGDIR: ${{ runner.temp }}/matplotlib
+        run: |
+          "$RUNNER_TEMP/spicedmodel-test-venv/bin/python" -m pytest "$GITHUB_WORKSPACE/tests"
+
+  windows-msvc-build-and-test:
+    runs-on: windows-latest
+    env:
+      CMAKE_GENERATOR: Visual Studio 17 2022
+      CMAKE_GENERATOR_PLATFORM: x64
+
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          submodules: recursive
+
+      - name: Set up Python
+        uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
+        with:
+          python-version: "3.14"
+
+      - name: Build distributions with MSVC
+        run: |
+          python -m pip install build
+          python -m build .
+
+      - name: Install wheel into test environment
+        shell: pwsh
+        run: |
+          $venv = Join-Path $env:RUNNER_TEMP "spicedmodel-test-venv"
+          python -m venv $venv
+          $python = Join-Path $venv "Scripts/python.exe"
+          $wheel = Get-ChildItem "dist/*.whl" | Select-Object -First 1
+          & $python -m pip install $wheel.FullName pytest
+
+      - name: Run installed-package tests
+        shell: pwsh
+        working-directory: ${{ runner.temp }}
+        env:
+          MPLCONFIGDIR: ${{ runner.temp }}/matplotlib
+        run: |
+          $python = Join-Path $env:RUNNER_TEMP "spicedmodel-test-venv/Scripts/python.exe"
+          & $python -m pytest "$env:GITHUB_WORKSPACE/tests"