"""Tests for tool call argument repair in the streaming assembly path.

The streaming path (run_agent._call_chat_completions) assembles tool call
deltas into full arguments.  When a model truncates or malforms the JSON
(e.g. GLM-5.1 via Ollama), the assembly path used to pass the broken JSON
straight through — setting has_truncated_tool_args but NOT repairing it.
That triggered the truncation handler to kill the session with /new required.

The fix: repair arguments in the streaming assembly path using
_repair_tool_call_arguments() so repairable malformations (trailing commas,
unclosed brackets, Python None) don't kill the session.
"""

import json

from run_agent import _repair_tool_call_arguments


class TestStreamingAssemblyRepair:
    """Verify that _repair_tool_call_arguments is applied to streaming tool
    call arguments before they're assembled into mock_tool_calls.

    These tests verify the REPAIR FUNCTION itself works correctly for the
    cases that arise during streaming assembly.  Integration tests that
    exercise the full streaming path are in run_agent.py's streaming tests.
    """

    # -- Truncation cases (most common streaming failure) --

    def test_truncated_object_no_close_brace(self):
        """Model stops mid-JSON, common with output length limits."""
        raw = '{"command": "ls -la", "timeout": 30'
        result = _repair_tool_call_arguments(raw, "terminal")
        parsed = json.loads(result)
        assert parsed["command"] == "ls -la"
        assert parsed["timeout"] == 30



    # -- Trailing comma cases (Ollama/GLM common) --



    # -- Python None from model output --


    # -- Empty arguments (some models emit empty string) --

    def test_empty_string(self):
        assert _repair_tool_call_arguments("", "test") == "{}"


    # -- Already-valid JSON passes through unchanged --


    # -- Extra closing brackets (rare but happens) --


    # -- Real-world GLM-5.1 truncation pattern --