CI: Switch from travis to Github actions for tests (#307)

* Setup test workflow with github actions

* Add sphinx version to matrix.

* Add doc building to test workflow.

* Add codecov step to test workflow.

* Remove travis config.

* WIP: try without action.

.coveragerc

@@ -4,3 +4,5 @@ source = numpydoc
 include = */numpydoc/*
 omit =
     */setup.py
+    numpydoc/tests/*
+    numpydoc/templates/*

.github/workflows/test.yml

@@ -0,0 +1,63 @@
+name: numpydoc tests
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  test:
+    runs-on: ${{ matrix.os }}-latest
+    strategy:
+      matrix:
+        os: [Ubuntu]
+        python-version: [3.6, 3.7, 3.8, 3.9]
+        sphinx-version: ["sphinx==1.6.5", "sphinx==2.1", "sphinx>3.0"]
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Python setup
+      uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.python-version }}
+
+    - name: Setup environment
+      run: |
+        python -m venv venv
+        source venv/bin/activate
+
+    - name: Install
+      run: |
+        python -m pip install --upgrade pip wheel setuptools
+        python -m pip install -r test_requirements.txt -r doc/requirements.txt
+        python -m pip install codecov
+        python -m pip install ${{ matrix.sphinx-version }}
+        python -m pip install .
+        pip list
+
+    - name: Run test suite
+      run: |
+        pytest -v --pyargs .
+
+    - name: Test coverage
+      run: |
+        codecov
+
+    - name: Make sure CLI works
+      run: |
+        python -m numpydoc numpydoc.tests.test_main._capture_stdout
+        echo '! python -m numpydoc numpydoc.tests.test_main._invalid_docstring' | bash
+        python -m numpydoc --validate numpydoc.tests.test_main._capture_stdout
+        echo '! python -m numpydoc --validate numpydoc.tests.test_main._docstring_with_errors' | bash
+
+    - name: Setup for doc build
+      run: |
+        # Get scipy-sphinx-theme
+        git submodule update --init
+        sudo apt install texlive texlive-latex-extra latexmk dvipng
+
+    - name: Build documentation
+      run: |
+        make -C doc html SPHINXOPTS="-nT"
+        make -C doc latexpdf SPHINXOPTS="-nT"