CI/CD: use matrix's python-version

.github/workflows/e2e-subtensor-tests.yml

@@ -81,7 +81,7 @@ jobs:
       - name: Install uv
         uses: astral-sh/setup-uv@v4
         with:
-          python-version: 3.13
+          python-version: ${{ matrix.python-version }}
 
       - name: install dependencies
         run: |

tests/e2e_tests/conftest.py

@@ -173,6 +173,7 @@ def try_start_docker():
         start_new_session=True,
     ) as process:
         try:
+            loop = None
             substrate = None
             try:
                 pattern = re.compile(r"Imported #1")
@@ -187,22 +188,29 @@ def try_start_docker():
             )
             if not result.stdout.strip():
                 raise RuntimeError("Docker container failed to start.")
+
+            loop = asyncio.new_event_loop()
+            asyncio.set_event_loop(loop)
             substrate = AsyncSubstrateInterface(url="ws://127.0.0.1:9944")
             yield substrate
 
         finally:
             try:
-                if substrate:
-                    asyncio.run(substrate.close())
+                if substrate and loop:
+                    loop.run_until_complete(substrate.close())
             except Exception:
                 logging.warning("Failed to close substrate connection.")
 
             try:
                 subprocess.run(["docker", "kill", container_name])
+                subprocess.run(["docker", "wait", container_name], check=False)
                 process.wait(timeout=10)
             except subprocess.TimeoutExpired:
                 os.killpg(os.getpgid(process.pid), signal.SIGKILL)
 
+            if loop:
+                loop.close()
+
 
 @pytest.fixture(scope="function")
 def wallet_setup():

tests/e2e_tests/test_senate.py

@@ -8,7 +8,7 @@
 """
 
 import asyncio
-from .utils import call_add_proposal
+from .utils import call_add_proposal, run_async
 
 
 def test_senate(local_chain, wallet_setup):
@@ -90,7 +90,7 @@ def test_senate(local_chain, wallet_setup):
     assert wallet_bob.hotkey.ss58_address in root_senate_after_reg.stdout
 
     # Manually add a proposal on the chain & assert
-    success = asyncio.run(call_add_proposal(local_chain, wallet_bob))
+    success = run_async(call_add_proposal(local_chain, wallet_bob))
     assert success is True
 
     # Fetch proposals after adding one

tests/e2e_tests/utils.py

@@ -1,3 +1,4 @@
+import asyncio
 import os
 import re
 import shutil
@@ -299,3 +300,12 @@ async def call_add_proposal(
 
         await response.process_events()
         return await response.is_success
+
+def run_async(coro):
+    """Simple helper to run async code in tests (for 3.9)."""
+    try:
+        loop = asyncio.get_event_loop()
+    except RuntimeError:
+        loop = asyncio.new_event_loop()
+        asyncio.set_event_loop(loop)
+    return loop.run_until_complete(coro)