Add macOS CI

Add basic tests for drenv skipping the tests requiring a test cluster
which we cannot use yet.

Github provides Intel based macOS runners supporting nested
virtualization. We can start a lima vm but it always get stuck waiting
for ssh connection to the guest. We can try to fix this later, but for
now we can run all the test that do not require a test cluster by
skipping the tests.

Signed-off-by: Nir Soffer <nsoffer@redhat.com>

.github/workflows/ci.yaml

@@ -27,7 +27,6 @@ env:
   IMAGE_REGISTRY: "quay.io"
   IMAGE_TAG: "ci"
   DOCKERCMD: "podman"
-  DRIVER: "container"
 defaults:
   run:
     shell: bash
@@ -109,17 +108,21 @@ jobs:
       - name: Run unit tests
         run: make test
 
-  drenv-test:
-    name: drenv tests
-    runs-on: ubuntu-22.04
+  drenv-linux:
+    name: drenv
     strategy:
       matrix:
+        os:
+          - ubuntu-22.04
         python-version:
           - "3.9"
           - "3.10"
           - "3.11"
           - "3.12"
           - "3.13-dev"
+    runs-on: ${{ matrix.os }}
+    env:
+      DRIVER: "container"
     steps:
       - name: Checkout source
         uses: actions/checkout@v4
@@ -178,17 +181,72 @@ jobs:
         run: make clean
         working-directory: test
 
-  ramenctl-test:
-    name: ramenctl tests
-    runs-on: ubuntu-22.04
+  drenv-macos:
+    name: drenv
+    strategy:
+      matrix:
+        os:
+          # arm64, 3 cpus (M1), 7 GiB RAM, no nested virtalization.
+          - macos-14
+        python-version:
+          - "3.12"
+    runs-on: ${{ matrix.os }}
+    steps:
+      - name: Checkout ramen
+        uses: actions/checkout@v4
+
+      - name: Setup python
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Install python packages
+        run: pip install -r requirements.txt
+
+      - name: Enable coverage for child processes
+        run: cp coverage.pth $(python3 -c 'import sysconfig; print(sysconfig.get_paths()["purelib"])')
+
+      - name: Install drenv
+        run: pip install -e test
+
+      - name: Run flake8
+        run: make flake8
+        working-directory: test
+
+      - name: Run pylint
+        run: make pylint
+        working-directory: test
+
+      - name: Run black
+        run: make black
+        working-directory: test
+
+      - name: Run tests
+        # We cannot run the test cluster on macOS.
+        run: make unit-test
+        working-directory: test
+
+      - name: Report test coverage
+        run: make coverage
+        working-directory: test
+
+  ramenctl:
+    name: ramenctl
     strategy:
       matrix:
+        os:
+          - ubuntu-22.04
         python-version:
           - "3.9"
           - "3.10"
           - "3.11"
           - "3.12"
           - "3.13-dev"
+        include:
+          # arm64, 3 cpus (M1), 7 GiB RAM, no nested virtalization.
+          - os: macos-14
+            python-version: "3.12"
+    runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout source
         uses: actions/checkout@v4
@@ -198,7 +256,7 @@ jobs:
         with:
           python-version: ${{ matrix.python-version }}
 
-      - name: Install tools
+      - name: Install python packages
         run: pip install -r requirements.txt
 
       - name: Install drenv