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Ahmed AllamandAhmed Allam
1f36f5d401
Treat tool_output_max_tokens as a ceiling so an explicit model-supplied cap can't exceed it, and derive the truncation notice's dropped-line count from the lines actually kept after the byte-trim pass. Also cast the pygments fallback lexer so it satisfies the resolve_lexer return type under the pre-commit mypy hook.
64 lines
2.1 KiB
Python
64 lines
2.1 KiB
Python
"""Tests for per-tool-output bounding."""
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from __future__ import annotations
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import re
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from strix.tools.output_store import bound_text
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def test_small_output_passes_through_unchanged() -> None:
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text = "line 1\nline 2\nline 3"
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assert bound_text(text, max_lines=100, max_bytes=10_000) == text
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def test_line_limit_keeps_head_and_tail() -> None:
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text = "\n".join(str(i) for i in range(1000))
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bounded = bound_text(text, max_lines=10, max_bytes=1_000_000)
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assert bounded.startswith("0\n1\n2\n3\n4")
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assert bounded.rstrip().endswith("999")
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assert "truncated" in bounded
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# Head + tail only, far fewer than the original 1000 lines.
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assert len(bounded.splitlines()) < 30
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def test_byte_limit_enforced_on_single_long_line() -> None:
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text = "x" * 100_000
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bounded = bound_text(text, max_lines=2_000, max_bytes=1_000)
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assert "truncated" in bounded
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assert len(bounded.encode("utf-8")) < 3_000
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def test_multibyte_characters_not_split() -> None:
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text = "😀" * 50_000
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bounded = bound_text(text, max_lines=2_000, max_bytes=1_000)
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# Must remain valid UTF-8 (no broken surrogate halves from a mid-char cut).
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assert bounded == bounded.encode("utf-8").decode("utf-8")
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assert "truncated" in bounded
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def test_notice_reports_dropped_counts() -> None:
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text = "\n".join("y" * 10 for _ in range(500))
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bounded = bound_text(text, max_lines=10, max_bytes=1_000_000)
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assert "lines" in bounded
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assert "bytes" in bounded
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def test_dropped_line_count_accounts_for_byte_trimming() -> None:
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# A tight byte budget forces the byte pass to drop whole lines from the
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# head/tail slices; the notice must count those, not just the middle.
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text = "\n".join(f"line-{i}" for i in range(200))
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bounded = bound_text(text, max_lines=20, max_bytes=40)
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match = re.search(r"\[\.\.\. (\d+) lines", bounded)
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assert match is not None, bounded
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dropped = int(match.group(1))
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kept = [ln for ln in bounded.splitlines() if ln and "truncated" not in ln]
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assert dropped == 200 - len(kept)
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# The naive middle-only count (max_lines split evenly) would under-report.
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assert dropped > 200 - 20
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