[CI] Add more tests

.github/workflows/tests.yml

@@ -16,7 +16,7 @@ jobs:
     strategy:
       matrix:
         python-version: [3.9]
-        os: [ubuntu-latest, windows-latest, macos-latest]
+        os: [macos-latest]
         # exclude:  # Temporarily disable release for macos and python 3.8 as there is a bug with openblas
           # - os: macos-latest
             # python-version: 3.8
@@ -51,9 +51,15 @@ jobs:
       shell: bash -e {0}
       run: python -m pip install pytest-xvfb
       if: runner.os == 'Linux'
+    - name: Test imports
+      shell: bash -e {0}
+      run: |
+        python -c "import libmetgem"
+        python -c "from libmetgem import IS_CYTHONIZED; assert IS_CYTHONIZED == True"
+        python -c "from libmetgem.cosine import cosine_score; print(cosine_score)"
     - name: Test with pytest
       shell: bash -e {0}
-      run: cd tests && pytest --cov=libmetgem --cov-report=xml
+      run: pytest --cov=libmetgem --cov-report=xml -s -x
     - name: Upload coverage
       if: success()
       uses: codecov/codecov-action@v1