fix: respect task page limits and recover stale capacity counts

tests/test_capacity_refresh.py

@@ -0,0 +1,61 @@
+import sys
+import unittest
+from pathlib import Path
+from unittest.mock import patch
+sys.path.insert(0, str(Path(__file__).resolve().parents[1] / "modelhub_submmit_api"))
+from modelhub_client import ModelHubClient, ModelHubClientPool, ModelHubAPIError
+
+
+class CapacityRefreshTests(unittest.TestCase):
+    def test_api_boundary_clamps_all_callers(self):
+        client = ModelHubClient(token="test")
+        with patch.object(client, "_request", return_value={}) as request:
+            client.list_tasks_page(page_size=200)
+            self.assertEqual(100, request.call_args.kwargs["query"]["pageSize"])
+
+    def client(self, total=97, observed=94):
+        client = ModelHubClient(token="test")
+        def page(*, status, page_size, **kwargs):
+            self.assertLessEqual(page_size, 100)
+            return {"data": {"total": total if status == "waiting" else 0, "records": [
+                {"taskId": str(i), "status": status} for i in range(observed if status == "waiting" else 0)]}}
+        client.list_tasks_page = page
+        return client
+
+    def test_full_cache_refreshes_to_free_slots_with_disagreeing_total(self):
+        client = self.client()
+        pool = ModelHubClientPool([client], active_task_cap=100)
+        pool._remote_counts[0] = 100
+        self.assertEqual([97], pool.refresh_active_counts())
+        self.assertEqual(3, pool.available_submit_slots())
+        self.assertTrue(client.active_count_details[0]["mismatch"])
+
+    def test_error_is_unknown_and_recovery_reopens_slots(self):
+        client = self.client()
+        pool = ModelHubClientPool([client], active_task_cap=100)
+        pool.refresh_active_counts()
+        with patch.object(client, "list_tasks_page", side_effect=ModelHubAPIError("分页大小不能超过100")):
+            pool.refresh_active_counts()
+            self.assertEqual(0, pool.available_submit_slots())
+            self.assertIsNone(pool.active_count_status()[0]["active"])
+            self.assertIsNone(pool._reserve_account(set()))
+        pool.refresh_active_counts()
+        self.assertEqual(3, pool.available_submit_slots())
+
+    def test_incomplete_or_repeated_pages_do_not_open_slots(self):
+        client = self.client(total=200, observed=100)
+        with self.assertRaises(ModelHubAPIError):
+            client.count_active_tasks_exact()
+        client.list_tasks_page = lambda **kwargs: {"data": {"records": []}}
+        with self.assertRaises(ModelHubAPIError):
+            client.count_active_tasks_exact()
+
+    def test_duplicate_ids_and_transition_are_counted_once(self):
+        client = ModelHubClient(token="test")
+        client.list_tasks_page = lambda **kwargs: {"data": {"total": 1, "records": [
+            {"taskId": "same", "status": kwargs["status"]},
+            {"taskId": "same", "status": kwargs["status"]}]}}
+        self.assertEqual(1, client.count_active_tasks_exact())
+
+    def test_total_lower_than_observed_uses_larger_count(self):
+        self.assertEqual(99, self.client(total=97, observed=99).count_active_tasks_exact())