test more cases without vendor id

Author: dsfaccini

pydantic_ai_slim/pydantic_ai/_parts_manager.py

@@ -377,7 +377,7 @@ def _handle_text_delta_with_thinking_tags(  # noqa: C901
         if segments and segments[0][0] == 'text':
             text_content = segments[0][1]
 
-            if text_content:  # praga: no cover - line was always true
+            if text_content:  # pragma: no cover - line was always true
                 combined_content = buffered + content
                 self._thinking_tag_buffer.pop(vendor_part_id, None)
                 yield from self._emit_text_part(

tests/test_parts_manager_split_tags.py

@@ -69,6 +69,18 @@ class Case:
         expected_parts=[TextPart('<think>')],
         vendor_part_id=None,
     ),
+    Case(
+        name='unclosed_opening_tag_with_content_no_vendor_id',
+        chunks=['<think>', 'content'],
+        expected_parts=[ThinkingPart('content')],
+        vendor_part_id=None,
+    ),
+    Case(
+        name='partial_closing_tag_no_vendor_id',
+        chunks=['<think>', 'content', '</thi'],
+        expected_parts=[ThinkingPart('content</thi')],
+        vendor_part_id=None,
+    ),
     # --- Split thinking tags -> ThinkingPart ---
     Case(
         name='open_with_content_then_close',
@@ -80,6 +92,12 @@ class Case:
         chunks=['<think>', 'content</think>'],
         expected_parts=[ThinkingPart('content')],
     ),
+    Case(
+        name='open_then_content_and_close_no_vendor_id',
+        chunks=['<think>', 'content</think>'],
+        expected_parts=[ThinkingPart('content')],
+        vendor_part_id=None,
+    ),
     Case(
         name='fully_split_open_and_close',
         chunks=['<th', 'ink>content</th', 'ink>'],