Switch macOS CI to GitHub Actions

.github/workflows/ci.yml

@@ -0,0 +1,39 @@
+name: CI
+
+on: [push, pull_request]
+
+jobs:
+  macOS:
+    runs-on: macos-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: [2.7, 3.5, 3.6, 3.7, 3.8]
+
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@v1
+      - name: Set Up Python 3.7 to run nox
+        uses: actions/setup-python@v1
+        with:
+          python-version: 3.7
+      - name: Set Up Python - ${{ matrix.python-version }}
+        if: matrix.python_version != '3.7'
+        uses: actions/setup-python@v1
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install Dependencies
+        run: |
+          python3.7 -m pip install --upgrade nox
+      - name: Run Tests
+        run: |
+          nox -s test-${{ matrix.python-version }}
+      - name: Upload Coverage
+        uses: codecov/codecov-action@v1
+        with:
+          file: ./coverage.xml
+          flags: unittests
+          name: codecov-umbrella
+          yml: ./codecov.yml
+          fail_ci_if_error: true

.travis.yml

@@ -62,23 +62,6 @@ jobs:
     - python: 3.7
       env: NOX_SESSION=google_brotli-3
 
-    # OS X unit tests.
-    - language: generic
-      os: osx
-      env: NOX_SESSION=test-2.7
-    - language: generic
-      os: osx
-      env: NOX_SESSION=test-3.5
-    - language: generic
-      os: osx
-      env: NOX_SESSION=test-3.6
-    - language: generic
-      os: osx
-      env: NOX_SESSION=test-3.7
-    - language: generic
-      os: osx
-      env: NOX_SESSION=test-3.8
-
     # Downstream integration tests.
     - python: 2.7
       env: DOWNSTREAM=requests

_travis/install.sh

@@ -3,54 +3,17 @@
 set -exo pipefail
 
 
-install_mac_python() {
-    local FULL=$1
-    local MINOR=$(echo $FULL | cut -d. -f1,2)
-    local PYTHON_EXE=/Library/Frameworks/Python.framework/Versions/${MINOR}/bin/python${MINOR}
-    if [[ "$MINOR" == "3.5" ]]; then
-        # The 3.5 python.org macOS build is only compiled with macOS 10.6
-        local COMPILER=10.6
-    else
-        local COMPILER=10.9
-    fi
-
-    curl -Lo macpython.pkg https://www.python.org/ftp/python/${FULL}/python-${FULL}-macosx${COMPILER}.pkg
-    sudo installer -pkg macpython.pkg -target /
-
-    # The pip in older MacPython releases doesn't support a new enough TLS
-    curl https://bootstrap.pypa.io/get-pip.py | sudo $PYTHON_EXE
-    $PYTHON_EXE -m pip install virtualenv
-}
-
-
-if [[ "$(uname -s)" == 'Darwin' ]]; then
-    # Mac OS setup.
-    case "${NOX_SESSION}" in
-        test-2.7) MACPYTHON=2.7.17 ;;
-        test-3.5) MACPYTHON=3.5.4 ;;  # last binary release
-        test-3.6) MACPYTHON=3.6.8 ;;  # last binary release
-        test-3.7) MACPYTHON=3.7.6 ;;
-        test-3.8) MACPYTHON=3.8.1 ;;
-    esac
-
-    install_mac_python $MACPYTHON
-
-    # Install Nox
-    python3 -m pip install nox
-
+# Linux Setup
+# Even when testing on Python 2, we need Python 3 for Nox. This detects if
+# we're in one of the Travis Python 2 sessions and sets up the Python 3 install
+# for Nox.
+if ! python3 -m pip --version; then
+    curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
+    sudo python3 get-pip.py
+    sudo python3 -m pip install nox
 else
-    # Linux Setup
-    # Even when testing on Python 2, we need Python 3 for Nox. This detects if
-    # we're in one of the Travis Python 2 sessions and sets up the Python 3 install
-    # for Nox.
-    if ! python3 -m pip --version; then
-        curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
-        sudo python3 get-pip.py
-        sudo python3 -m pip install nox
-    else
-        # We're not in "dual Python" mode, so we can just install Nox normally.
-        python3 -m pip install nox
-    fi
+    # We're not in "dual Python" mode, so we can just install Nox normally.
+    python3 -m pip install nox
 fi
 
 if [[ "${NOX_SESSION}" == "app_engine" ]]; then

_travis/run.sh

@@ -3,12 +3,7 @@
 set -exo pipefail
 
 if [ -n "${NOX_SESSION}" ]; then
-    if [[ "$(uname -s)" == 'Darwin' ]]; then
-        # Explicitly use python3 on macOS as `nox` is not in the PATH
-        python3 -m nox -s "${NOX_SESSION}"
-    else
-        nox -s "${NOX_SESSION}"
-    fi
+    nox -s "${NOX_SESSION}"
 else
     downstream_script="${TRAVIS_BUILD_DIR}/_travis/downstream/${DOWNSTREAM}.sh"
     if [ ! -x "$downstream_script" ]; then