Add code coverage processing & upload to Github Actions workflow (#239)

* Ensure a recent version of pip, prevent automatic upgrade to tox 4.x

* lint step too.

* Add code coverage processing & upload to Github Actions workflow

Author: asherf

.github/workflows/main.yml

@@ -24,14 +24,21 @@ jobs:
         python-version: ${{ matrix.python-version }}
     - name: Install dependencies
       run: |
+        pip install -U "pip>=21.1"
         pip install -U setuptools
-        pip install -U tox codecov tox-gh-actions
+        pip install -U "tox>=3.23.0,<4" codecov tox-gh-actions coverage
     - name: Log python & pip versions
       run: |
         python --version
         pip --version
     - name: Run unit tests
       run: tox
+    - name: "Coverage report"
+      run:  coverage xml
+    - name: "Upload coverage to Codecov"
+      uses: "codecov/codecov-action@v1"
+      with:
+        fail_ci_if_error: true
   linting:
     runs-on: ubuntu-latest
     steps:
@@ -42,5 +49,5 @@ jobs:
     - name: Install dependencies
       run: |
         pip install -U setuptools 
-        pip install -U tox
+        pip install -U "tox>=3.23.0,<4"
     - run: tox -e flake8

tox.ini

@@ -16,7 +16,7 @@ python =
 [testenv:basecommand]
 commands =
     pip --version
-    pytest --cov-report term-missing --cov jose {posargs}
+    pytest --cov-append --cov-report term-missing --cov jose {posargs}
 
 
 [testenv:pypy3-compatibility]