Add 3.10 to Nightly Edge Build (Azure#20623)

* update nightly edge build to run python 3.10 on both windows and linux agents
* conditionally update `pytest` requirements in both ci_tools.txt and test_tools.txt for python 3.10
* conditionally add some necessary python 3.10 windows wheels to test_tools.txt. These additions only affect python 3.10, which is not currently part of the test matrix

eng/ci_tools.txt

@@ -28,8 +28,9 @@ json-delta==2.0
 ConfigArgParse==1.2.3
 six==1.14.0
 pyyaml==5.3.1
-pytest==5.4.2; python_version >= '3.5'
 pytest==4.6.9; python_version == '2.7'
+pytest==5.4.2; python_version >= '3.5' and python_version <= '3.9'
+pytest==6.2.4; python_version >= '3.10'
 pytest-cov==2.8.1
 
 # local dev packages

eng/pipelines/templates/jobs/tests-nightly-python.yml

@@ -3,7 +3,83 @@ trigger:
 
 jobs:
 
+  - job: Validate_RC_Python_Build_Windows
+    displayName: Validate Release Candidate Python - Windows
+    variables:
+      skipComponentGovernanceDetection: true
+      PythonVersion: '3.10.0-rc.2'
+
+    timeoutInMinutes: 90
+
+    pool:
+      vmImage: 'windows-2019'
+
+    steps:
+      - template: /eng/pipelines/templates/steps/use-python-version.yml
+        parameters:
+          versionSpec: $(PythonVersion)
+
+      - script: |
+          python -m pip freeze
+          python -m pip --version
+          pip install setuptools==56.0.0 wheel==0.37.0 tox==3.24.3 tox-monorepo==0.1.2 packaging==21.0
+        displayName: Install Dependencies
+
+      - script: |
+          python ./scripts/devops_tasks/setup_execute_tests.py "$(BuildTargetingString)" --junitxml="junit/test_results.xml" --toxenv="whl"
+        displayName: 'Setup - Run Filtered Tests For Python $(PythonVersion)'
+        env:
+          YARL_NO_EXTENSIONS: 1
+        continueOnError: true
+
+      - task: PublishTestResults@2
+        condition: always()
+        inputs:
+          testResultsFiles: '**/*test*.xml'
+          testRunTitle: 'Python $(PythonVersion)'
+          failTaskOnFailedTests: true
+
+  - job: Validate_RC_Python_Build_Linux
+    displayName: Validate Release Candidate Python - Linux
+    variables:
+      skipComponentGovernanceDetection: true
+      PythonVersion: '3.10.0-rc.2'
+
+    timeoutInMinutes: 90
+
+    pool:
+      vmImage: 'ubuntu-18.04'
+
+    steps:
+      - template: /eng/pipelines/templates/steps/use-python-version.yml
+        parameters:
+          versionSpec: $(PythonVersion)
+
+      - script: |
+          python -m pip freeze
+          python -m pip --version
+          pip install setuptools==56.0.0 wheel==0.37.0 tox==3.24.3 tox-monorepo==0.1.2 packaging==21.0
+        displayName: Install Dependencies
+
+      - script: |
+          find /usr/lib -name "libffi.so*"
+          ln -s /usr/lib/x86_64-linux-gnu/libffi.so.7 /usr/lib/x86_64-linux-gnu/libffi.so.6
+
+          python ./scripts/devops_tasks/setup_execute_tests.py "$(BuildTargetingString)" --junitxml="junit/test_results.xml" --toxenv="whl"
+        displayName: 'Setup - Run Filtered Tests For Python $(PythonVersion)'
+        env:
+          YARL_NO_EXTENSIONS: 1
+        continueOnError: true
+
+      - task: PublishTestResults@2
+        condition: always()
+        inputs:
+          testResultsFiles: '**/*test*.xml'
+          testRunTitle: 'Python $(PythonVersion)'
+          failTaskOnFailedTests: true
+
   - job: Validate_Nightly_Python_Build
+    displayName: Validate Nightly Dev Python Build
     variables:
       skipComponentGovernanceDetection: true
 
@@ -48,5 +124,5 @@ jobs:
         condition: always()
         inputs:
           testResultsFiles: '**/junit/test-results.xml'
-          testRunTitle: '$(OSName) Python $(PythonVersion)'
+          testRunTitle: 'Python Nightly'
           failTaskOnFailedTests: true

eng/test_tools.txt

@@ -1,8 +1,15 @@
 pip==20.3
 
+# manually published packages
+https://docsupport.blob.core.windows.net/repackaged/cffi-1.14.6-cp310-cp310-win_amd64.whl; sys_platform=='win32' and python_version >= '3.10'
+https://docsupport.blob.core.windows.net/repackaged/multidict-5.1.0-cp310-cp310-win_amd64.whl; sys_platform=='win32' and python_version >= '3.10'
+https://docsupport.blob.core.windows.net/repackaged/pywin32-301.1-cp310-cp310-win_amd64.whl; sys_platform=='win32' and python_version >= '3.10'
+https://docsupport.blob.core.windows.net/repackaged/yarl-1.6.3-cp310-cp310-win_amd64.whl; sys_platform=='win32' and python_version >= '3.10'
+
 # requirements leveraged by ci for testing
 pytest==4.6.9; python_version == '2.7'
-pytest==5.4.2; python_version >= '3.5'
+pytest==5.4.2; python_version >= '3.5' and python_version <= '3.9'
+pytest==6.2.4; python_version >= '3.10'
 pytest-asyncio==0.12.0; python_version >= '3.5'
 pytest-cov==2.8.1
 pytest-custom-exit-code==0.3.0