2

tests/test_belief.py

@@ -109,10 +109,26 @@ class BeliefDirectionTests(TestCase):
         with_margin = BeliefState(CONFIG)
         with_margin.update_measure(1, (0.0, 0.0), DIRECTION, 2.01)
         self.assertTrue(with_margin.candidate_set(1).contains(source, tol_m=0.5))
-        no_margin = BeliefState(ProblemConfig())
+        no_margin_config = replace(ProblemConfig(),
+                                   search=replace(ProblemConfig().search,
+                                                  bearing_rounding_margin_deg=0.0))
+        no_margin = BeliefState(no_margin_config)
         no_margin.update_measure(1, (0.0, 0.0), DIRECTION, 2.01)
         self.assertFalse(no_margin.candidate_set(1).contains(source, tol_m=0.5))
 
+    def test_default_config_carries_rounding_margin(self):
+        """库默认配置必须自带 0.005° 舍入裕量，与 CLI run 默认一致。
+
+        在线 API 若按默认配置消费官方读数，"加误差再舍入"规则下
+        合法真源可能被裁掉；默认口径必须保守。
+        """
+        self.assertEqual(ProblemConfig().search.bearing_rounding_margin_deg, 0.005)
+        default_belief = BeliefState(ProblemConfig())
+        source = (1200 * math.cos(math.radians(1.005)),
+                  1200 * math.sin(math.radians(1.005)))
+        default_belief.update_measure(1, (0.0, 0.0), DIRECTION, 2.01)
+        self.assertTrue(default_belief.candidate_set(1).contains(source, tol_m=0.5))
+
     def test_near_shrinks_to_five_meters(self):
         belief = BeliefState(CONFIG)
         belief.update_measure(2, (100.0, 100.0), NEAR, None)