Simplify tests to pip

.github/workflows/test.yaml

@@ -49,35 +49,10 @@ jobs:
         uses: actions/setup-python@v2
         with:
           python-version: ${{ matrix.python-version }}
-      #----------------------------------------------
-      #  -----  install & configure poetry  -----
-      #----------------------------------------------
-      - name: Install Poetry
-        uses: snok/install-poetry@v1
-        with:
-          virtualenvs-create: true
-          virtualenvs-in-project: true
-      #----------------------------------------------
-      #       load cached venv if cache exists
-      #----------------------------------------------
-      - name: Load cached venv
-        id: cached-poetry-dependencies
-        uses: actions/cache@v2
-        with:
-          path: .venv
-          key: venv-${{ runner.os }}-${{ steps.setup-python.outputs.python-version }}-${{ hashFiles('**/poetry.lock') }}
-      #----------------------------------------------
-      # install dependencies if cache does not exist
-      #----------------------------------------------
       - name: Install dependencies
-        if: steps.cached-poetry-dependencies.outputs.cache-hit != 'true'
-        run: poetry install --no-interaction --no-root
-      #----------------------------------------------
-      # install your root project, if required
-      #----------------------------------------------
-      - name: Install library
-        run: poetry install --no-interaction
-
+        run: |
+          python -m pip install --upgrade pip
+          pip install .
       - name: Run tests
         run: |
           source .venv/bin/activate