mirror of
https://github.com/NousResearch/hermes-agent.git
synced 2026-06-19 10:02:16 +00:00
f80381c456
Context files (AGENTS.md, CLAUDE.md, .hermes.md, .cursorrules, SOUL.md) were hard-capped at a flat 20K chars before head/tail truncation. Among the agent harnesses we track, only Codex caps project docs at all (32 KiB); Claude Code, OpenCode, and Cline load them whole. The flat 20K predates large context windows and silently truncates real-world AGENTS.md files. B — dynamic cap: when context_file_max_chars is unset (now the shipped default), the cap scales with the model's context window (ctx_tokens * 4 * 0.06, floor 20K, ceiling 500K). Small-context models stay at the historical 20K; a 200K model gets 48K; large models stop truncating real docs. An explicit context_file_max_chars still wins. Context length is resolved once per conversation (stable -> prompt cache untouched). C — when truncation does happen, the marker now names the concrete file path and tells the agent to read_file it for the full content. Validation: 154 targeted tests + full agent/ + hermes_cli/ + test_config (0 failures); E2E against a real 60K AGENTS.md confirms small windows truncate with the path-bearing marker, large windows load whole, and the system prompt is byte-stable across rebuilds.
98 lines
3.6 KiB
Python
98 lines
3.6 KiB
Python
"""Tests for agent/system_prompt.py — context-file cwd wiring."""
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from types import SimpleNamespace
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from unittest.mock import patch
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from agent.system_prompt import build_system_prompt_parts
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def _make_agent(**overrides):
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base = dict(
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load_soul_identity=False,
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skip_context_files=False,
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valid_tool_names=[],
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_task_completion_guidance=False,
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_tool_use_enforcement=False,
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_environment_probe=False,
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_kanban_worker_guidance="",
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_memory_store=None,
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_memory_manager=None,
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model="",
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provider="",
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platform="",
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pass_session_id=False,
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session_id="",
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)
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base.update(overrides)
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return SimpleNamespace(**base)
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def _captured_context_cwd(agent):
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"""The cwd build_system_prompt_parts hands to build_context_files_prompt."""
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captured = {}
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def fake_context_files(cwd=None, skip_soul=False, context_length=None):
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captured["cwd"] = cwd
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return ""
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with (
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patch("run_agent.load_soul_md", return_value=""),
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patch("run_agent.build_nous_subscription_prompt", return_value=""),
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patch("run_agent.build_environment_hints", return_value=""),
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patch("run_agent.build_context_files_prompt", side_effect=fake_context_files),
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):
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build_system_prompt_parts(agent)
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return captured["cwd"]
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class TestContextFileCwd:
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def test_none_when_terminal_cwd_unset(self, monkeypatch):
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# Unset → None, so discovery falls back to the launch dir inside
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# build_context_files_prompt (the local-CLI #19242 contract).
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monkeypatch.delenv("TERMINAL_CWD", raising=False)
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assert _captured_context_cwd(_make_agent()) is None
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def test_configured_dir_when_terminal_cwd_set(self, monkeypatch, tmp_path):
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monkeypatch.setenv("TERMINAL_CWD", str(tmp_path))
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assert _captured_context_cwd(_make_agent()) == tmp_path
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def _stable_prompt(agent):
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with (
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patch("run_agent.load_soul_md", return_value=""),
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patch("run_agent.build_nous_subscription_prompt", return_value=""),
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patch("run_agent.build_environment_hints", return_value=""),
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patch("run_agent.build_context_files_prompt", return_value=""),
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):
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return build_system_prompt_parts(agent)["stable"]
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class TestCodingContextBlock:
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def test_injected_when_active(self, monkeypatch, tmp_path):
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import subprocess
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subprocess.run(["git", "-C", str(tmp_path), "init", "-q"], check=True)
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monkeypatch.setenv("TERMINAL_CWD", str(tmp_path))
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agent = _make_agent(valid_tool_names=["read_file"], platform="cli")
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stable = _stable_prompt(agent)
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assert "coding agent" in stable
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assert "Workspace" in stable
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def test_absent_when_off(self, monkeypatch, tmp_path):
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import subprocess
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subprocess.run(["git", "-C", str(tmp_path), "init", "-q"], check=True)
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monkeypatch.setenv("TERMINAL_CWD", str(tmp_path))
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agent = _make_agent(valid_tool_names=["read_file"], platform="cli")
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# Drive the real path: force the resolved mode to "off" via config.
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with patch("agent.coding_context._coding_mode", return_value="off"):
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stable = _stable_prompt(agent)
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assert "coding agent" not in stable
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def test_absent_without_tools(self, monkeypatch, tmp_path):
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import subprocess
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subprocess.run(["git", "-C", str(tmp_path), "init", "-q"], check=True)
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monkeypatch.setenv("TERMINAL_CWD", str(tmp_path))
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agent = _make_agent(valid_tool_names=[], platform="cli")
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assert "coding agent" not in _stable_prompt(agent)
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