Merge pull request #119 from ImperialCollegeLondon/expand_ci_system

Author: dalonsoa

.github/workflows/ci.yml

@@ -4,8 +4,7 @@ on:
     pull_request:
         types: [opened, synchronize, reopened]
     push:
-        branches: [main, develop]
-
+      branches: [main, develop]
 jobs:
   # Checks the style using the pre-commit hooks
   qa:
@@ -17,14 +16,21 @@ jobs:
   # Only then, normal testing proceeds
   unit-tests:
     needs: qa
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
+
+
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+        python-version: ["3.8", "3.9"]
 
     steps:
     - uses: actions/checkout@v3
-    - name: Set up Python 3.8
+    - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v4
       with:
-        python-version: 3.8
+        python-version: ${{ matrix.python-version }}
 
     - name: Install dependencies
       run: |
@@ -48,14 +54,20 @@ jobs:
 
   regression-tests:
     needs: qa
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+        python-version: ["3.8", "3.9"]
 
     steps:
       - uses: actions/checkout@v3
-      - name: Set up Python 3.8
+      - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v4
         with:
-          python-version: 3.8
+          python-version: ${{ matrix.python-version }}
 
       - name: Install dependencies
         run: |