Fix coverage updates

Author: staticdev

.github/workflows/tests.yml

@@ -33,7 +33,7 @@ jobs:
         uses: actions/[email protected]
 
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v2.2.1
+        uses: actions/setup-python@v2.1.4
         with:
           python-version: ${{ matrix.python-version }}
 
@@ -68,7 +68,7 @@ jobs:
           print("::set-output name=result::{}".format(result))
 
       - name: Restore pre-commit cache
-        uses: actions/cache@v2
+        uses: actions/cache@v2.1.3
         if: matrix.session == 'pre-commit'
         with:
           path: ~/.cache/pre-commit
@@ -80,18 +80,59 @@ jobs:
         run: |
           nox --force-color --python=${{ matrix.python-version }}
 
+      - name: Upload coverage data
+        if: always() && matrix.session == 'tests'
+        uses: "actions/[email protected]"
+        with:
+          name: coverage-data
+          path: ".coverage.*"
+
       - name: Upload documentation
         if: matrix.session == 'docs-build'
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v2.2.1
         with:
           name: docs
           path: docs/_build
 
+  coverage:
+    runs-on: ubuntu-latest
+    needs: tests
+    steps:
+      - name: Check out the repository
+        uses: actions/[email protected]
+
+      - name: Set up Python 3.9
+        uses: actions/[email protected]
+        with:
+          python-version: 3.9
+
+      - name: Upgrade pip
+        run: |
+          pip install --constraint=.github/workflows/constraints.txt pip
+          pip --version
+
+      - name: Install Poetry
+        run: |
+          pip install --constraint=.github/workflows/constraints.txt poetry
+          poetry --version
+
+      - name: Install Nox
+        run: |
+          pip install --constraint=.github/workflows/constraints.txt nox nox-poetry
+          nox --version
+
+      - name: Download coverage data
+        uses: actions/[email protected]
+        with:
+          name: coverage-data
+
+      - name: Combine coverage data and display human readable report
+        run: |
+          nox --force-color --session=coverage
+
       - name: Create coverage report
-        if: always() && matrix.session == 'tests'
         run: |
           nox --force-color --session=coverage -- xml
 
       - name: Upload coverage report
-        if: always() && matrix.session == 'tests'
-        uses: codecov/[email protected]
+        uses: codecov/[email protected]