[#34] TDD: add failing black / autopep8 tests

Signed-off-by: Bryant Finney <[email protected]>

.github/workflows/usage.yml

@@ -39,13 +39,15 @@ jobs:
           path: dist/*.whl
 
   test-install:
-    name: Test installation on ${{ matrix.os }} with ${{ matrix.manager }} for Python ${{ matrix.py }}
-    runs-on: ${{ matrix.os }}
+    env:
+      PIPENV_SETUP: ${{ needs.build.outputs.wheel }}${{ matrix.extras }}
+    name: "${{ matrix.os }} | py${{ matrix.py }}: ${{ matrix.manager }} install ${{ needs.build.outputs.wheel }}${{ matrix.extras }}"
     needs: build
+    runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
-        extras: ["", "[dev]"]
+        extras: ["", "[dev]", "[black]", "[autopep8]"]
         manager: [pip, pipenv]
         os: [ubuntu-latest, windows-latest, macos-latest]
         py: [3.7, 3.8]
@@ -65,7 +67,7 @@ jobs:
           path: dist
 
       - name: Install using ${{ matrix.manager }} ➕
-        run: ${{ matrix.manager }} install ${{ needs.build.outputs.wheel }}
+        run: ${{ matrix.manager }} install "$PIPENV_SETUP"
 
       - name: Print help (pip) 🖨️
         if: ${{ matrix.manager == 'pip' }}