test: Add coverage and codecov bot

.codecov.yml

@@ -0,0 +1,11 @@
+coverage:
+  status:
+    project:
+      default: false
+      tests:
+        paths: tests
+        informational: true
+      knox:
+        paths: knox
+        informational: true
+    patch: off

.coveragerc

@@ -0,0 +1,5 @@
+[run]
+branch = True
+source = knox
+omit =
+    */migrations/*

.github/workflows/test.yml

@@ -36,8 +36,14 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        python -m pip install --upgrade tox tox-gh-actions
+        python -m pip install --upgrade tox tox-gh-actions coverage
 
     - name: Tox tests
       run: |
         tox -v
+
+    - name: Generate coverage XML report
+      run: coverage xml
+
+    - name: Codecov
+      uses: codecov/codecov-action@v3

tox.ini

@@ -22,7 +22,8 @@ commands = isort --check-only --diff \
 [testenv]
 commands =
     python manage.py migrate
-    python manage.py test
+    coverage run manage.py test
+    coverage report
 setenv =
     DJANGO_SETTINGS_MODULE = knox_project.settings
     PIP_INDEX_URL = https://pypi.python.org/simple/
@@ -38,6 +39,7 @@ deps =
     setuptools
     twine
     wheel
+    coverage
 
 [gh-actions]
 python =