chore: track pre-existing test_chat_tools.py baseline

Was never committed before. Tracking it now (unmodified) so Task 6 of
the cross-chat-memory plan, which edits this file, produces a clean
incremental diff instead of showing the whole file as new.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019iZMEPk2Kt1UC96Lo9bC5w

Claude outputs/tests/test_chat_tools.py

@@ -0,0 +1,138 @@
+import os
+import sys
+from unittest.mock import AsyncMock, MagicMock, patch
+
+sys.path.insert(0, os.path.join(os.path.dirname(__file__), ".."))
+
+import pytest
+
+import main
+
+
+def _text_block(text):
+    block = MagicMock()
+    block.type = "text"
+    block.text = text
+    return block
+
+
+def _tool_use_block(name, tool_input, tool_id="tool_1"):
+    block = MagicMock()
+    block.type = "tool_use"
+    block.name = name
+    block.input = tool_input
+    block.id = tool_id
+    return block
+
+
+def _usage(input_tokens, output_tokens):
+    usage = MagicMock()
+    usage.input_tokens = input_tokens
+    usage.output_tokens = output_tokens
+    return usage
+
+
+@pytest.mark.asyncio
+async def test_run_chat_completion_without_tool_use():
+    completion = MagicMock()
+    completion.stop_reason = "end_turn"
+    completion.content = [_text_block("Hallo!")]
+    completion.usage = _usage(10, 5)
+
+    main.claude_client = MagicMock()
+    main.claude_client.messages.create.return_value = completion
+
+    text, output_tokens, total_tokens = await main.run_chat_completion([{"role": "user", "content": "Hi"}])
+
+    assert text == "Hallo!"
+    assert output_tokens == 5
+    assert total_tokens == 15
+
+
+@pytest.mark.asyncio
+async def test_run_chat_completion_executes_tool_and_returns_followup():
+    first = MagicMock()
+    first.stop_reason = "tool_use"
+    first.content = [_tool_use_block("list_calendar_events", {"days_ahead": 7})]
+    first.usage = _usage(20, 8)
+
+    second = MagicMock()
+    second.stop_reason = "end_turn"
+    second.content = [_text_block("Naechste Woche steht nichts an.")]
+    second.usage = _usage(30, 12)
+
+    main.claude_client = MagicMock()
+    main.claude_client.messages.create.side_effect = [first, second]
+
+    with patch.object(main, "list_upcoming_events", new=AsyncMock(return_value=[])):
+        text, output_tokens, total_tokens = await main.run_chat_completion(
+            [{"role": "user", "content": "Was steht diese Woche an?"}]
+        )
+
+    assert text == "Naechste Woche steht nichts an."
+    assert output_tokens == 8 + 12
+    assert total_tokens == 20 + 8 + 30 + 12
+    assert main.claude_client.messages.create.call_count == 2
+
+
+@pytest.mark.asyncio
+async def test_run_chat_completion_handles_two_sequential_tool_calls():
+    """Regression test: 'verschiebe den Termin X' needs list_calendar_events
+    to find the uid, THEN update_calendar_event - a single tool round used
+    to silently drop the second call and return an empty response."""
+    first = MagicMock()
+    first.stop_reason = "tool_use"
+    first.content = [_tool_use_block("list_calendar_events", {"days_ahead": 30}, "tool_1")]
+    first.usage = _usage(20, 8)
+
+    second = MagicMock()
+    second.stop_reason = "tool_use"
+    second.content = [
+        _tool_use_block("update_calendar_event", {"uid": "abc", "start": "2026-09-30T11:00:00"}, "tool_2")
+    ]
+    second.usage = _usage(40, 10)
+
+    third = MagicMock()
+    third.stop_reason = "end_turn"
+    third.content = [_text_block("Termin verschoben.")]
+    third.usage = _usage(50, 6)
+
+    main.claude_client = MagicMock()
+    main.claude_client.messages.create.side_effect = [first, second, third]
+
+    with patch.object(main, "list_upcoming_events", new=AsyncMock(return_value=[{"uid": "abc"}])), patch.object(
+        main, "update_event", new=AsyncMock(return_value={"uid": "abc"})
+    ):
+        text, output_tokens, total_tokens = await main.run_chat_completion(
+            [{"role": "user", "content": "Verschiebe den Termin X"}]
+        )
+
+    assert text == "Termin verschoben."
+    assert output_tokens == 8 + 10 + 6
+    assert total_tokens == 20 + 8 + 40 + 10 + 50 + 6
+    assert main.claude_client.messages.create.call_count == 3
+
+
+@pytest.mark.asyncio
+async def test_run_chat_completion_lists_recent_emails():
+    first = MagicMock()
+    first.stop_reason = "tool_use"
+    first.content = [_tool_use_block("list_recent_emails", {"limit": 5}, "tool_1")]
+    first.usage = _usage(15, 6)
+
+    second = MagicMock()
+    second.stop_reason = "end_turn"
+    second.content = [_text_block("Du hast 5 neue Mails.")]
+    second.usage = _usage(20, 8)
+
+    main.claude_client = MagicMock()
+    main.claude_client.messages.create.side_effect = [first, second]
+
+    with patch.object(main, "list_recent_emails", new=AsyncMock(return_value=[])):
+        text, output_tokens, total_tokens = await main.run_chat_completion(
+            [{"role": "user", "content": "Was ist neu im Postfach?"}]
+        )
+
+    assert text == "Du hast 5 neue Mails."
+    assert output_tokens == 6 + 8
+    assert total_tokens == 15 + 6 + 20 + 8