97 lines
3.7 KiB
Python
97 lines
3.7 KiB
Python
from __future__ import annotations
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from agents.sandbox.util.token_truncation import (
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TruncationPolicy,
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approx_bytes_for_tokens,
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approx_token_count,
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approx_tokens_from_byte_count,
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format_truncation_marker,
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formatted_truncate_text,
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formatted_truncate_text_with_token_count,
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removed_units_for_source,
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split_budget,
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split_string,
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truncate_text,
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truncate_with_byte_estimate,
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truncate_with_token_budget,
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)
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def test_truncation_policy_clamps_negative_limits_and_converts_budgets() -> None:
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byte_policy = TruncationPolicy.bytes(-10)
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token_policy = TruncationPolicy.tokens(-2)
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assert byte_policy.limit == 0
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assert byte_policy.token_budget() == 0
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assert byte_policy.byte_budget() == 0
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assert token_policy.limit == 0
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assert token_policy.token_budget() == 0
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assert token_policy.byte_budget() == 0
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def test_formatted_truncate_text_returns_short_content_unchanged() -> None:
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assert formatted_truncate_text("short", TruncationPolicy.bytes(20)) == "short"
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def test_formatted_truncate_text_adds_line_count_when_truncated() -> None:
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result = formatted_truncate_text("alpha\nbeta\ngamma", TruncationPolicy.bytes(8))
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assert result.startswith("Total output lines: 3\n\n")
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assert "chars truncated" in result
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def test_formatted_truncate_text_with_token_count_handles_none_and_short_content() -> None:
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assert formatted_truncate_text_with_token_count("short", None) == ("short", None)
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assert formatted_truncate_text_with_token_count("short", 10) == ("short", None)
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def test_formatted_truncate_text_with_token_count_reports_original_count() -> None:
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result, original_token_count = formatted_truncate_text_with_token_count("abcdefghi", 1)
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assert result.startswith("Total output lines: 1\n\n")
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assert "tokens truncated" in result
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assert original_token_count == approx_token_count("abcdefghi")
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def test_truncate_text_dispatches_byte_and_token_modes() -> None:
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assert truncate_text("abcdef", TruncationPolicy.bytes(4)).startswith("a")
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assert "tokens truncated" in truncate_text("abcdefghi", TruncationPolicy.tokens(1))
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def test_truncate_with_token_budget_handles_empty_and_short_content() -> None:
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assert truncate_with_token_budget("", TruncationPolicy.tokens(1)) == ("", None)
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assert truncate_with_token_budget("abc", TruncationPolicy.tokens(1)) == ("abc", None)
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def test_truncate_with_byte_estimate_handles_empty_zero_and_short_content() -> None:
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assert truncate_with_byte_estimate("", TruncationPolicy.bytes(0)) == ""
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assert "chars truncated" in truncate_with_byte_estimate("abc", TruncationPolicy.bytes(0))
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assert truncate_with_byte_estimate("abc", TruncationPolicy.bytes(10)) == "abc"
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def test_split_string_preserves_utf8_boundaries() -> None:
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removed_chars, prefix, suffix = split_string("aあbいc", 2, 4)
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assert prefix == "a"
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assert suffix == "いc"
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assert removed_chars == 2
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def test_split_string_handles_empty_content() -> None:
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assert split_string("", 10, 10) == (0, "", "")
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def test_formatting_and_estimate_helpers() -> None:
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byte_policy = TruncationPolicy.bytes(8)
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token_policy = TruncationPolicy.tokens(2)
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assert "chars truncated" in format_truncation_marker(byte_policy, 3)
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assert "tokens truncated" in format_truncation_marker(token_policy, 2)
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assert split_budget(5) == (2, 3)
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assert removed_units_for_source(byte_policy, removed_bytes=10, removed_chars=4) == 4
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assert removed_units_for_source(token_policy, removed_bytes=9, removed_chars=4) == 3
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assert approx_token_count("abcde") == 2
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assert approx_bytes_for_tokens(-1) == 0
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assert approx_tokens_from_byte_count(0) == 0
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assert approx_tokens_from_byte_count(5) == 2
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