Use GitHub Actions and ReadtheDocs CI

.github/workflows/ci.yml

@@ -0,0 +1,87 @@
+name: CI
+
+on: [push, pull_request]
+
+jobs:
+  Windows:
+    name: 'Windows (${{ matrix.python }})'
+    runs-on: 'windows-latest'
+    strategy:
+      fail-fast: false
+      matrix:
+        python: ['3.7', '3.8', '3.9', '3.10']
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Setup python
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python }}
+          cache: pip
+          cache-dependency-path: test-requirements.txt
+      - name: Run tests
+        run: ./ci.sh
+        shell: bash
+        env:
+          # Should match 'name:' up above
+          JOB_NAME: 'Windows (${{ matrix.python }})'
+
+  Ubuntu:
+    name: 'Ubuntu (${{ matrix.python }}${{ matrix.extra_name }})'
+    timeout-minutes: 10
+    runs-on: 'ubuntu-latest'
+    strategy:
+      fail-fast: false
+      matrix:
+        python: ['3.7', '3.8', '3.9', '3.10', '3.11-dev']
+        check_formatting: ['0']
+        extra_name: ['']
+        include:
+          - python: '3.10'
+            check_formatting: '1'
+            extra_name: ', check formatting'
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Setup python
+        uses: actions/setup-python@v2
+        if: "!endsWith(matrix.python, '-dev')"
+        with:
+          python-version: ${{ matrix.python }}
+          cache: pip
+          cache-dependency-path: test-requirements.txt
+      - name: Setup python (dev)
+        uses: deadsnakes/action@v2.0.2
+        if: endsWith(matrix.python, '-dev')
+        with:
+          python-version: '${{ matrix.python }}'
+      - name: Run tests
+        run: ./ci.sh
+        env:
+          CHECK_FORMATTING: '${{ matrix.check_formatting }}'
+          # Should match 'name:' up above
+          JOB_NAME: 'Ubuntu (${{ matrix.python }}${{ matrix.extra_name }})'
+
+  macOS:
+    name: 'macOS (${{ matrix.python }})'
+    timeout-minutes: 10
+    runs-on: 'macos-latest'
+    strategy:
+      fail-fast: false
+      matrix:
+        python: ['3.7', '3.8', '3.9', '3.10']
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Setup python
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python }}
+          cache: pip
+          cache-dependency-path: test-requirements.txt
+      - name: Run tests
+        run: ./ci.sh
+        env:
+          # Should match 'name:' up above
+          JOB_NAME: 'macOS (${{ matrix.python }})'

.readthedocs.yml

@@ -5,12 +5,6 @@ formats:
 
 requirements_file: ci/rtd-requirements.txt
 
-# Currently RTD's default image only has 3.5
-# This gets us 3.6 (and hopefully 3.7 in the future)
-# https://docs.readthedocs.io/en/latest/yaml-config.html#build-image
-build:
-  image: latest
-
 python:
   version: 3
   pip_install: True

ci.sh

@@ -0,0 +1,57 @@
+#!/bin/bash
+
+set -ex
+
+MYPY_VERSION=0.782
+YAPF_VERSION=0.22.0
+
+
+pip install -U pip setuptools wheel
+
+if [ "$CHECK_FORMATTING" = "1" ]; then
+    pip install yapf==${YAPF_VERSION}
+    if ! yapf -rpd setup.py sniffio; then
+        cat <<EOF
+!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+Formatting problems were found (listed above). To fix them, run
+
+   pip install yapf==${YAPF_VERSION}
+   yapf -rpi setup.py sniffio
+
+in your local checkout.
+
+!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+EOF
+        exit 1
+    fi
+    pip install mypy==${MYPY_VERSION}
+    if ! mypy --pretty sniffio; then
+      cat <<EOF
+!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+Type checking problems were found (listed above).
+
+!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+EOF
+      exit 1
+    fi
+    exit 0
+fi
+
+python setup.py sdist --formats=zip
+pip install dist/*.zip
+
+# Actual tests
+pip install -Ur test-requirements.txt
+
+mkdir empty
+cd empty
+
+pytest -W error -ra -v --pyargs sniffio --cov=sniffio --cov-config=../.coveragerc --verbose
+
+bash <(curl -s https://codecov.io/bash)

setup.py

@@ -21,7 +21,7 @@
         "trio",
         "asyncio",
     ],
-    python_requires=">=3.5",
+    python_requires=">=3.7",
     tests_require=['curio'],
     classifiers=[
         "License :: OSI Approved :: MIT License",

sniffio/_tests/test_sniffio.py

@@ -1,3 +1,4 @@
+import os
 import sys
 
 import pytest
@@ -50,16 +51,18 @@ async def this_is_asyncio():
         assert current_async_library() == "asyncio"
         ran.append(True)
 
-    loop = asyncio.get_event_loop()
-    loop.run_until_complete(this_is_asyncio())
+    asyncio.run(this_is_asyncio())
     assert ran == [True]
-    loop.close()
 
     with pytest.raises(AsyncLibraryNotFoundError):
         current_async_library()
 
 
-@pytest.mark.skipif(sys.version_info < (3, 6), reason='Curio requires 3.6+')
+# https://github.com/dabeaz/curio/pull/354
+@pytest.mark.skipif(
+    os.name == "nt" and sys.version_info >= (3, 9),
+    reason="Curio breaks on Python 3.9+ on Windows. Fix was not released yet",
+)
 def test_curio():
     import curio