update workflow

Author: Jerry-Ma

.github/workflows/ci_tests.yml

@@ -30,7 +30,7 @@ jobs:
           - name: Python 3.8 with all optional dependencies
             os: ubuntu-latest
             python: 3.8
-            toxenv: py38
+            toxenv: py38-cov
 
           - name: OS X - Python 3.8 with all optional dependencies
             os: macos-latest
@@ -58,9 +58,8 @@ jobs:
     - name: Test with tox
       run: |
         tox -e ${{ matrix.toxenv }}
-    # This is an example of how to upload coverage to codecov
-    # - name: Upload coverage to codecov
-    #   if: "contains(matrix.toxenv, '-cov')"
-    #   uses: codecov/codecov-action@v1
-    #   with:
-    #     file: ./coverage.xml
+    - name: Upload coverage to codecov
+      if: "contains(matrix.toxenv, '-cov')"
+      uses: codecov/codecov-action@v1
+      with:
+        file: ./coverage.xml

tox.ini

@@ -1,5 +1,7 @@
 [tox]
-envlist = py38, flake8
+envlist =
+    py38{,-cov}
+    flake8
 
 [testenv]
 setenv =
@@ -11,7 +13,9 @@ deps =
 ;     -r{toxinidir}/requirements.txt
 commands =
     pip install -U pip
-    pytest --basetemp={envtmpdir}
+    !cov: pytest --basetemp={envtmpdir}
+    cov: coverage run --source dash_component_template -m pytest
+    cov: coverage xml -o {toxinidir}/coverage.xml
 
 allowlist_externals = make
                       /bin/bash