import pytest
from boring.core.kernel import BoringKernel
from boring.flow.graph import FlowGraph
from boring.flow.nodes.base import BaseNode, FlowContext, NodeResult, NodeResultStatus
class RestrictedNode(BaseNode):
def can_enter(self, context: FlowContext) -> tuple[bool, str]:
# Simulate a Policy: "No execution on Fridays" or "Requires valid signature"
# Here: Strict check failing
return False, "POLICY_VIOLATION: Root access prohibited"
async def process(self, context) -> NodeResult:
return NodeResult(status=NodeResultStatus.SUCCESS, message="I should not run")
@pytest.mark.asyncio
async def test_governance_is_authoritative(tmp_path):
"""VERIFY: Policy violations (can_enter=False) strictly halt execution."""
kernel = BoringKernel(tmp_path)
ctx = kernel.create_context("Governance Test")
graph = FlowGraph(ctx)
graph.add_node(RestrictedNode("RestrictedArea"), is_start=True)
result = await graph.run()
# Assert authoritative blocking
assert "POLICY_VIOLATION" in result.message
assert "Flow Halted" in result.message
# This proves that 'can_enter' is a hard gate, not an advisory warning.
# Thus, the system is Governable.
