Add Codecov and GitHub action

.github/workflows/tests.yml

@@ -0,0 +1,37 @@
+name: Tests
+
+on:
+  - push
+  - pull_request
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Install ghostscript libmagickwand-dev
+      run: sudo apt-get install libxml2-utils
+    - name: Remove policy.xml
+      run: sudo rm /etc/ImageMagick-6/policy.xml
+    - name: Check out repo
+      uses: actions/checkout@v2
+    - name: Set up Python
+      uses: actions/setup-python@v1
+      with:
+        python-version: 3.8
+    - uses: actions/cache@v2
+      name: Configure pip caching
+      with:
+        path: ~/.cache/pip
+        key: ${{ runner.os }}-pip-${{ hashFiles('**/setup.py') }}
+        restore-keys: |
+          ${{ runner.os }}-pip-
+    - name: Install Python dependencies
+      run: |
+        python -m pip install -r requirements.txt
+        python -m pip install -r requirements-dev.txt
+        python -m pip install -e .
+    - name: Run tests
+      run: |-
+        pytest --cov=pdfplumber --cov-config=.coveragerc --cov-report xml:coverage.xml --cov-report term
+    - name: Codecov
+      uses: codecov/codecov-action@v1.0.12

Makefile

@@ -11,4 +11,4 @@ venv:
 	${PIP} install -e .
 
 tests:
-	${PYTHON} -m pytest
+	${PYTHON} -m pytest --cov=pdfplumber --cov-config=.coveragerc --cov-report xml:coverage.xml --cov-report term

requirements-dev.txt

@@ -1,2 +1,3 @@
 pandas>=1.0.0
 pytest
+pytest-cov