44 lines
1.5 KiB
Python
44 lines
1.5 KiB
Python
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"""Tool-output display truncation uses _truncate with an indicator.
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Previously agent_loop sliced tool output to a hard character limit ([:2000]
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or [:4000]) with no signal to the UI that data was lost. Now it delegates to
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tool_utils._truncate which caps at MAX_OUTPUT_CHARS (10 000) and appends
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a ``... (truncated, N chars total)`` suffix so the frontend can show a
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truncation indicator in the tool bubble.
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"""
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from src.tool_utils import _truncate, MAX_OUTPUT_CHARS
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def test_short_output_unchanged():
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"""Outputs within the limit pass through verbatim."""
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text = "hello world"
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assert _truncate(text) == text
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def test_long_output_truncated_with_indicator():
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"""Outputs exceeding MAX_OUTPUT_CHARS are truncated with a suffix."""
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text = "x" * (MAX_OUTPUT_CHARS + 500)
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result = _truncate(text)
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assert len(result) > MAX_OUTPUT_CHARS # includes suffix
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assert result.startswith("x" * MAX_OUTPUT_CHARS)
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assert "truncated" in result
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assert str(len(text)) in result # original length reported
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def test_exact_limit_unchanged():
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"""An output exactly at the limit is not truncated."""
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text = "a" * MAX_OUTPUT_CHARS
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assert _truncate(text) == text
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def test_default_limit_matches_constant():
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"""_truncate default limit equals MAX_OUTPUT_CHARS (10 000)."""
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assert MAX_OUTPUT_CHARS == 10_000
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text = "y" * 10_001
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result = _truncate(text)
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assert "truncated" in result
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def test_empty_string():
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assert _truncate("") == ""
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