Fix: Execution creation was not tested

Solution: Add a test that creates a new VM execution and checks that it starts properly.

pyproject.toml

@@ -135,6 +135,13 @@ all = [
 pythonpath = [
   "src"
 ]
+testpaths = [
+  "tests"
+]
+ignore = [
+  "runtimes/aleph-debian-11-python/rootfs/",
+  "runtimes/aleph-debian-12-python/rootfs/",
+]
 
 [tool.black]
 target-version = ["py39"]

tests/supervisor/test_execution.py

@@ -0,0 +1,55 @@
+import asyncio
+
+import pytest
+from aleph_message.models import ItemHash
+
+from aleph.vm.conf import settings
+from aleph.vm.controllers.firecracker import AlephFirecrackerProgram
+from aleph.vm.models import VmExecution
+from aleph.vm.orchestrator import metrics
+from aleph.vm.storage import get_message
+
+
+@pytest.mark.asyncio
+async def test_create_execution():
+    """
+    Create a new VM execution and check that it starts properly.
+    """
+
+    settings.FAKE_DATA_PROGRAM = settings.BENCHMARK_FAKE_DATA_PROGRAM
+    settings.ALLOW_VM_NETWORKING = False
+    settings.USE_JAILER = False
+
+    import logging
+    logging.basicConfig(level=logging.DEBUG)
+
+    # Ensure that the settings are correct and required files present.
+    settings.setup()
+    settings.check()
+
+    # The database is required for the metrics and is currently not optional.
+    engine = metrics.setup_engine()
+    await metrics.create_tables(engine)
+
+    vm_hash = ItemHash("cafecafecafecafecafecafecafecafecafecafecafecafecafecafecafecafe")
+    message = await get_message(ref=vm_hash)
+
+    execution = VmExecution(
+        vm_hash=vm_hash,
+        message=message.content,
+        original=message.content,
+        snapshot_manager=None,
+        systemd_manager=None,
+        persistent=False,
+    )
+
+    # Downloading the resources required may take some time, limit it to 10 seconds
+    await asyncio.wait_for(execution.prepare(), timeout=30)
+
+    vm = execution.create(vm_id=3, tap_interface=None)
+
+    # Test that the VM is created correctly. It is not started yet.
+    assert isinstance(vm, AlephFirecrackerProgram)
+    assert vm.vm_id == 3
+
+    await asyncio.wait_for(execution.start(), timeout=30)