Fixes the coverage reporting for the actual source files

.github/workflows/test.yml

@@ -25,12 +25,11 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip setuptools wheel
-        pip install pytest pytest-cov coverage cached-property
-          python setup.py clean build install
-    - name: Run test
-      run: pytest
-
-    - name: Generate coverage report
+        pip install pytest pytest-cov pytest-sugar coverage cached-property
+    - name: Install Whoosh
+      run: |
+        pip install -e .
+    - name: Run tests
       run: |
         pip install pytest
         pip install pytest-cov