Use pytest-cov to report coverage

Author: michaelosthege

.github/workflows/main.yml

@@ -28,7 +28,7 @@ jobs:
         python-version: ${{ matrix.python-version }}
     - name: Install Dependences
       run: |
-        conda install --yes conda-build conda-verify coverage pytest hypothesis statsmodels aesara c-compiler
+        conda install --yes conda-build conda-verify pytest pytest-cov hypothesis statsmodels aesara c-compiler
     - name: Build package
       run: |
         conda build --variants "{python: [${{ matrix.python-version }}]}" ./sunode/conda
@@ -38,4 +38,4 @@ jobs:
     - name: Test with coverage
       run: |
         # conda activate doesn't seem to set paths to the conda prefix correctly
-        env LD_LIBRARY_PATH=${CONDA_PREFIX}/lib coverage run -m pytest --pyargs sunode
+        env LD_LIBRARY_PATH=${CONDA_PREFIX}/lib pytest --cov=sunode --cov-report xml --cov-report term-missing sunode