feat: run tests on mac and windows

taskcluster/config.yml

@@ -38,3 +38,13 @@ workers:
             implementation: docker-worker
             os: linux
             worker-type: linux-docker
+        t-windows:
+            provisioner: 'taskgraph-t'
+            implementation: generic-worker
+            os: windows
+            worker-type: win11-64-24h2
+        t-mac:
+            provisioner: 'taskgraph-t'
+            implementation: generic-worker
+            os: macosx
+            worker-type: macos

taskcluster/kinds/test/kind.yml

@@ -18,42 +18,73 @@ task-defaults:
         artifact_prefix: public
         retrigger: true
         code-review: true
-    worker-type: t-linux
     worker:
-        docker-image: {in-tree: python}
         max-run-time: 1800
         env:
-            LC_ALL: "C"
             PYTHONUTF8: "0"
             PYTHONCOERCECLOCALE: "0"
             HGENCODING: "utf-8"
     treeherder:
         kind: test
-        platform: test/opt
         tier: 1
     run:
         using: run-task
         cwd: '{checkout}'
         use-caches: [checkout, uv]
 
 tasks:
-    unit:
-        description: "Run unit tests with py{matrix[python]}"
+    unit-linux:
+        description: "Run unit tests with py{matrix[python]} on Linux"
         matrix:
             set-name: "unit-py{matrix[python]}"
             substitution-fields: [description, run.command, treeherder, worker, attributes]
             python: ["314t", "314", "313", "312", "311", "310", "39"]
         attributes:
             python: "{matrix[python]}"
+            platform: linux
+        worker-type: t-linux
         worker:
+            docker-image: {in-tree: python}
             artifacts:
                 - type: file
                   path: "/builds/worker/artifacts/coverage"
                   name: "public/coverage.py{matrix[python]}"
             env:
+                LC_ALL: "C"
                 UV_PYTHON: "{matrix[python]}"
         treeherder:
+            platform: test-linux/opt
             symbol: unit(py{matrix[python]})
         run:
             command: >-
                 uv run coverage run --data-file /builds/worker/artifacts/coverage --context=py{matrix[python]} -m pytest -vv
+
+    unit-win:
+        description: "Run unit tests with python on Windows"
+        attributes:
+            platform: windows
+        worker-type: t-windows
+        worker:
+            taskcluster-proxy: true
+        treeherder:
+            platform: test-win/opt
+            symbol: unit(py)
+        run:
+            command: >-
+                python3 -V &&
+                powershell -ExecutionPolicy ByPass -c 'irm https://astral.sh/uv/install.ps1 | iex' &&
+                .\\local\\bin\\uv.exe run -m pytest -vv
+
+    unit-mac:
+        description: "Run unit tests with python on macOS"
+        attributes:
+            platform: mac
+        worker-type: t-mac
+        treeherder:
+            platform: test-mac/opt
+            symbol: unit(py)
+        run:
+            command: >-
+                python3 -V &&
+                curl -LsSf https://astral.sh/uv/install.sh | sh &&
+                uv run -m pytest -vv