Enable real guest networking and make demos network-first

tests/test_runtime_network_check.py

@@ -0,0 +1,73 @@
+from __future__ import annotations
+
+import pytest
+
+import pyro_mcp.runtime_network_check as runtime_network_check
+from pyro_mcp.vm_network import TapNetworkManager
+
+
+def test_network_check_uses_network_enabled_manager(monkeypatch: pytest.MonkeyPatch) -> None:
+    observed: dict[str, object] = {}
+
+    class StubManager:
+        def __init__(self, **kwargs: object) -> None:
+            observed.update(kwargs)
+
+        def create_vm(self, **kwargs: object) -> dict[str, object]:
+            observed["create_kwargs"] = kwargs
+            return {"vm_id": "vm123"}
+
+        def start_vm(self, vm_id: str) -> dict[str, object]:
+            observed["started_vm_id"] = vm_id
+            return {"state": "started"}
+
+        def status_vm(self, vm_id: str) -> dict[str, object]:
+            observed["status_vm_id"] = vm_id
+            return {"network_enabled": True}
+
+        def exec_vm(self, vm_id: str, *, command: str, timeout_seconds: int) -> dict[str, object]:
+            observed["exec_vm_id"] = vm_id
+            observed["command"] = command
+            observed["timeout_seconds"] = timeout_seconds
+            return {
+                "execution_mode": "guest_vsock",
+                "exit_code": 0,
+                "stdout": "true\n",
+                "stderr": "",
+                "cleanup": {"deleted": True, "vm_id": vm_id, "reason": "post_exec_cleanup"},
+            }
+
+    monkeypatch.setattr(runtime_network_check, "VmManager", StubManager)
+    result = runtime_network_check.run_network_check()
+
+    network_manager = observed["network_manager"]
+    assert isinstance(network_manager, TapNetworkManager)
+    assert network_manager.enabled is True
+    assert observed["command"] == runtime_network_check.NETWORK_CHECK_COMMAND
+    assert observed["timeout_seconds"] == 120
+    assert result.execution_mode == "guest_vsock"
+    assert result.network_enabled is True
+    assert result.exit_code == 0
+
+
+def test_network_check_main_fails_on_unsuccessful_command(
+    monkeypatch: pytest.MonkeyPatch, capsys: pytest.CaptureFixture[str]
+) -> None:
+    monkeypatch.setattr(
+        runtime_network_check,
+        "run_network_check",
+        lambda **kwargs: runtime_network_check.NetworkCheckResult(
+            vm_id="vm123",
+            execution_mode="guest_vsock",
+            network_enabled=True,
+            exit_code=1,
+            stdout="",
+            stderr="curl failed",
+            cleanup={"deleted": True},
+        ),
+    )
+    with pytest.raises(SystemExit, match="1"):
+        runtime_network_check.main()
+    output = capsys.readouterr().out
+    assert "[network] result=failure" in output
+    assert "[network] stderr=curl failed" in output