GitHub Actions: Add Python 3.14 to test matrix

https://www.python.org/download/pre-releases

https://www.python.org/downloads/release/python-3140rc2

Author: cclauss

.github/workflows/test-suite.yml

@@ -13,22 +13,29 @@ jobs:
     runs-on: "ubuntu-latest"
 
     strategy:
+      fail-fast: false
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
 
     steps:
-      - uses: "actions/checkout@v4"
+      - uses: "actions/checkout@v5"
       - uses: "actions/setup-python@v6"
         with:
           python-version: "${{ matrix.python-version }}"
           allow-prereleases: true
       - name: "Install dependencies"
+        if: matrix.python-version != '3.14'
         run: "scripts/install"
+      - if: matrix.python-version == '3.14'
+        run: |
+          pip install -r requirements.txt
+          pip install --editable .[cli,http2,socks]
       - name: "Run linting checks"
         run: "scripts/check"
       - name: "Build package & docs"
         run: "scripts/build"
       - name: "Run tests"
         run: "scripts/test"
+        timeout-minutes: 10  # TODO(@cclauss): Remove once Python 3.14 tests are passing.
       - name: "Enforce coverage"
         run: "scripts/coverage"

requirements.txt

@@ -11,19 +11,19 @@ chardet==5.2.0
 # Documentation
 mkdocs==1.6.1
 mkautodoc==0.2.0
-mkdocs-material==9.6.18
+mkdocs-material==9.6.21
 
 # Packaging
 build==1.3.0
-twine==6.1.0
+twine==6.2.0
 
 # Tests & Linting
-coverage[toml]==7.10.6
-cryptography==45.0.7
-mypy==1.17.1
-pytest==8.4.1
-ruff==0.12.11
+coverage[toml]==7.10.7
+cryptography==46.0.2
+mypy==1.18.2
+pytest==8.4.2
+ruff==0.13.2
 trio==0.31.0
 trio-typing==0.10.0
 trustme==1.2.1
-uvicorn==0.35.0
+uvicorn==0.37.0

tests/test_timeouts.py

@@ -1,3 +1,5 @@
+import sys
+
 import pytest
 
 import httpx
@@ -13,6 +15,7 @@ async def test_read_timeout(server):
 
 
 @pytest.mark.anyio
+@pytest.mark.xfail(sys.version_info >= (3, 14), reason="Fix trio on Python >= 3.14")
 async def test_write_timeout(server):
     timeout = httpx.Timeout(None, write=1e-6)