MAINT: Testing Ifs in workflow to test multiple OS

.github/workflows/macos_unit_tests.yml

@@ -1,45 +1,68 @@
-name: Unit tests
+  name: Unit tests
 
-on:
-  push:
-    branches: ['**']
-  pull_request:
-    branches: ['**']
+  on:
+    push:
+      branches: ['**']
+    pull_request:
+      branches: ['**']
 
-jobs:
-  build:
+  jobs:
+    build:
 
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [macos-latest]
-        python-version: [3.8, 3.9, "3.10"]
+      runs-on: ${{ matrix.os }}
+      strategy:
+        matrix:
+          os: [ubuntu-latest,macos-latest]
+          python-version: [3.8]
 
-    steps:
-      - uses: actions/checkout@v4
-      - uses: conda-incubator/setup-miniconda@v3
-        with:
-          activate-environment: test
-          python-version: ${{ matrix.python-version }}
-          fetch-depth: 2
-      - name: Install dependencies
-        shell: bash -el {0}
-        run: |
-          python -m pip install --upgrade pip
-          conda install --yes -c conda-forge mpi4py openmpi
-      - name: Install HNN-core
-        shell: bash -el {0}
-        run: |
-          pip install --verbose '.[opt, parallel, test, gui]'
-      - name: Lint with flake8
-        shell: bash -el {0}
-        run: |
-          flake8 --count hnn_core
-      - name: Test with pytest
-        shell: bash -el {0}
-        run: |
-          python -m pytest ./hnn_core/tests/  --cov=hnn_core --cov-report=xml
-      - name:  Upload coverage to Codecov
-        shell: bash -el {0}
-        run: |
-          bash <(curl -s https://codecov.io/bash) -f ./coverage.xml
+      steps:
+        - uses: actions/checkout@4
+
+        - name: Install Ubuntu System dependencies
+          if: matrix.os == 'ubuntu-latest'
+          shell: bash -el {0}
+          run: |
+              sudo add-apt-repository ppa:ubuntu-toolchain-r/test
+              sudo apt-get update
+              sudo apt-get install libopenmpi-dev openmpi-bin
+
+        - name: Activate conda environment for macOS
+          if: matrix.os == 'macos-latest'
+          uses: conda-incubator/setup-miniconda@v3
+          with:
+            activate-environment: test
+            python-version: ${{ matrix.python-version }}
+            fetch-depth: 2
+
+        - name: Activate Python environment for Ubuntu
+          if: matrix.os == 'ubuntu-latest'
+          uses: actions/setup-python@v5
+          with:
+              python-version: ${{ matrix.python-version }}
+
+        - name: Install Python  dependencies
+          shell: bash -el {0}
+          run: |
+            if [ ${{ matrix.os }} == 'macos-latest' ]; then
+              python -m pip install --upgrade pip
+              conda install --yes -c conda-forge mpi4py openmpi
+            elif [[ "${{ matrix.os }}" == "ubuntu-latest" ]]; then 
+              python -m pip install --upgrade pip
+              python -m pip install mpi4py
+            fi
+        - name: Install HNN-core
+          shell: bash -el {0}
+          run: |
+            pip install --verbose '.[opt, parallel, test, gui]'
+        - name: Lint with flake8
+          shell: bash -el {0}
+          run: |
+            flake8 --count hnn_core
+        - name: Test with pytest
+          shell: bash -el {0}
+          run: |
+            python -m pytest ./hnn_core/tests/  --cov=hnn_core --cov-report=xml
+        - name:  Upload coverage to Codecov
+          shell: bash -el {0}
+          run: |
+            bash <(curl -s https://codecov.io/bash) -f ./coverage.xml