"""Routing boundary tests. Author: Sandeep Belgavi."""
import unittest
from pattern_04 import Ticket, dispatch

class RouterTests(unittest.TestCase):
    def call(self, route="latency", workers=None, service="checkout"):
        return dispatch(Ticket("i", service, "slow"), lambda _: route,
                        {"latency": lambda _: "fixture:L1"} if workers is None else workers, {"checkout"})
    def test_valid(self): self.assertEqual(self.call()["status"], "review")
    def test_unknown_route(self): self.assertEqual(self.call("root")["status"], "escalate")
    def test_wrong_service(self): self.assertEqual(self.call(service="payments")["status"], "denied")
    def test_unavailable(self): self.assertEqual(self.call(workers={})["status"], "unavailable")
    def test_result_contract(self): self.assertEqual(self.call(workers={"latency": lambda _: "fixed"})["status"], "invalid_result")
    def test_worker_error(self):
        def fail(_): raise RuntimeError()
        self.assertEqual(self.call(workers={"latency": fail})["status"], "worker_error")
    def test_envelope_minimized(self):
        seen = []
        def worker(value): seen.append(value); return "fixture:L1"
        self.call(workers={"latency": worker})
        self.assertEqual(set(seen[0]), {"incident", "service"})
    def test_bad_router_type(self): self.assertEqual(self.call(["latency"])["status"], "escalate")

if __name__ == "__main__": unittest.main()