Files
javis_bot/tests/test_system_prompt.py
javis-bot d5fd218c86 fix(reply): stop weak models parroting persona example facts
A 4b model replied to "하이" with "테니스 연습을 Trenches Gym에서..." — it copied
the literal "box at Trenches Gym" few-shot example embedded in the persona
prompt and mangled boxing into tennis, presenting a prompt example as if it
were a real user fact. Remove the copyable proper-noun example and add an
explicit guard: use ONLY names/places/activities that literally appear in the
memory section, never borrow them from the instructions or example wording.
2026-06-24 18:31:54 +09:00

200 lines
8.9 KiB
Python

"""Tests for the unified persona system prompt.
The persona should match the user's configured wake word so renaming the
wake word to e.g. "Friday" produces a butler named Friday, not one still
hardcoded to Jarvis.
"""
from jarvis.system_prompt import (
build_system_prompt,
load_agent_instructions,
output_language_directive,
reply_language_directive,
ENGLISH_ONLY_DIRECTIVE,
)
class TestBuildSystemPrompt:
def test_default_name_is_jarvis(self):
prompt = build_system_prompt()
assert "named Jarvis" in prompt
def test_custom_name_replaces_jarvis(self):
prompt = build_system_prompt("Friday")
assert "named Friday" in prompt
assert "named Jarvis" not in prompt
def test_lowercase_wake_word_is_capitalised(self):
prompt = build_system_prompt("friday".capitalize())
assert "named Friday" in prompt
def test_blank_name_falls_back_to_jarvis(self):
assert "named Jarvis" in build_system_prompt("")
assert "named Jarvis" in build_system_prompt(" ")
assert "named Jarvis" in build_system_prompt(None) # type: ignore[arg-type]
def test_default_keeps_user_language_clause(self):
# Without a lock, the persona still mirrors the user's language.
assert "in the user's language" in build_system_prompt("Jarvis")
def test_language_lock_rewrites_user_language_clause(self):
# With a lock, the contradicting "user's language" clause is rewritten
# so the persona does not fight the OUTPUT_LANGUAGE directive.
prompt = build_system_prompt("Jarvis", "Korean")
assert "in the user's language" not in prompt
assert "in Korean" in prompt
def test_persona_enforces_single_sentence(self):
# Spoken replies must be one sentence (TTS latency scales with text
# length, and the user asked for one-sentence answers). The persona must
# state the single-sentence rule and must NOT carry the old "two at the
# very most" allowance that let the model run long.
prompt = build_system_prompt("Jarvis")
assert "single short sentence" in prompt
assert "Never write a second sentence" in prompt
assert "two at the very most" not in prompt
def test_persona_aside_does_not_authorise_a_second_sentence(self):
# The dry aside must fold into the one sentence, not become a 2nd one.
prompt = build_system_prompt("Jarvis")
assert "SINGLE sentence" in prompt
assert "never add it as " in prompt
def test_persona_has_no_copyable_proper_noun_examples(self):
# A weak model parroted the literal "Trenches Gym" example from the
# persona as if it were a real user fact (boxing mangled to tennis).
# The persona must not embed copyable personal proper nouns, and must
# tell the model to use ONLY facts that literally appear in the memory
# section — never borrow names/places from the instructions themselves.
prompt = build_system_prompt("Jarvis")
assert "Trenches" not in prompt
assert "never borrow any name, place, or activity from these instructions" in prompt
class TestOutputLanguageDirective:
"""A deployment may lock replies to a single language via OUTPUT_LANGUAGE.
Unset (the default) must keep the assistant's multilingual behaviour of
replying in the user's own language, so the helper returns None and no
directive is injected.
"""
def test_unset_returns_none(self):
assert output_language_directive(None) is None
assert output_language_directive("") is None
assert output_language_directive(" ") is None
def test_set_language_is_named_and_exclusive(self):
directive = output_language_directive("Korean")
assert directive is not None
assert "Korean" in directive
# Must force exclusivity, not merely prefer the language.
assert "only" in directive.lower()
def test_language_agnostic(self):
# The helper takes any language string — no hardcoded single language.
assert "French" in (output_language_directive("French") or "")
assert "日本語" in (output_language_directive("日本語") or "")
def test_strips_surrounding_whitespace(self):
directive = output_language_directive(" Korean ")
assert directive is not None
assert "Korean" in directive
assert " Korean" not in directive
class TestReplyLanguageDirective:
"""Precedence: explicit OUTPUT_LANGUAGE lock > English-only TTS > free.
The lock must override the Piper/Chatterbox English fallback, because a
deployment that sets OUTPUT_LANGUAGE (e.g. Korean) also runs a TTS voice
that can speak it. Without this, the English lock and the Korean lock
contradict each other and the model reverts to English.
"""
def test_lock_overrides_english_only_tts(self):
directive = reply_language_directive("Korean", "piper")
assert directive is not None
assert "Korean" in directive
assert directive != ENGLISH_ONLY_DIRECTIVE
def test_english_only_tts_forces_english_without_lock(self):
assert reply_language_directive(None, "piper") == ENGLISH_ONLY_DIRECTIVE
assert reply_language_directive("", "chatterbox") == ENGLISH_ONLY_DIRECTIVE
def test_no_lock_multilingual_tts_is_free(self):
# A non-English-only engine (e.g. melo) with no lock → reply in the
# user's own language, so no directive.
assert reply_language_directive(None, "melo") is None
def test_unknown_tts_defaults_to_english_only(self):
# Preserves the original getattr(cfg, 'tts_engine', 'piper') default:
# an unknown/missing engine is treated conservatively as English-only.
assert reply_language_directive(None, None) == ENGLISH_ONLY_DIRECTIVE
def test_lock_wins_even_with_multilingual_tts(self):
directive = reply_language_directive("Korean", "melo")
assert directive is not None and "Korean" in directive
def test_edge_is_multilingual(self):
# Edge TTS (the default Korean voice) is not English-only: no lock → the
# user's own language, and a lock is honoured (not forced to English).
assert reply_language_directive(None, "edge") is None
directive = reply_language_directive("Korean", "edge")
assert directive is not None and "Korean" in directive
assert directive != ENGLISH_ONLY_DIRECTIVE
class TestLoadAgentInstructions:
"""Operator can extend the reply LLM's system prompt by dropping *.md files
into an agents/ folder. The loader concatenates them in filename order and
fails open so a missing/empty/broken folder never breaks a reply."""
def test_missing_dir_returns_empty(self, tmp_path):
assert load_agent_instructions(str(tmp_path / "does-not-exist")) == ""
def test_empty_dir_returns_empty(self, tmp_path):
assert load_agent_instructions(str(tmp_path)) == ""
def test_reads_and_concatenates_single_file(self, tmp_path):
(tmp_path / "rules.md").write_text("Always be brief.", encoding="utf-8")
assert load_agent_instructions(str(tmp_path)) == "Always be brief."
def test_files_are_ordered_by_filename(self, tmp_path):
# Filename prefixes let the operator control ordering.
(tmp_path / "10-second.md").write_text("SECOND", encoding="utf-8")
(tmp_path / "00-first.md").write_text("FIRST", encoding="utf-8")
result = load_agent_instructions(str(tmp_path))
assert result.index("FIRST") < result.index("SECOND")
def test_only_md_files_are_read(self, tmp_path):
(tmp_path / "note.txt").write_text("IGNORE ME", encoding="utf-8")
(tmp_path / "use.md").write_text("USE ME", encoding="utf-8")
result = load_agent_instructions(str(tmp_path))
assert "USE ME" in result
assert "IGNORE ME" not in result
def test_blank_files_are_skipped(self, tmp_path):
(tmp_path / "blank.md").write_text(" \n ", encoding="utf-8")
(tmp_path / "real.md").write_text("Real instruction.", encoding="utf-8")
assert load_agent_instructions(str(tmp_path)) == "Real instruction."
def test_env_var_is_used_when_no_arg(self, tmp_path, monkeypatch):
(tmp_path / "a.md").write_text("FROM ENV", encoding="utf-8")
monkeypatch.setenv("AGENTS_DIR", str(tmp_path))
assert load_agent_instructions() == "FROM ENV"
def test_explicit_arg_overrides_env(self, tmp_path, monkeypatch):
(tmp_path / "env.md").write_text("ENV", encoding="utf-8")
other = tmp_path / "other"
other.mkdir()
(other / "arg.md").write_text("ARG", encoding="utf-8")
monkeypatch.setenv("AGENTS_DIR", str(tmp_path))
assert load_agent_instructions(str(other)) == "ARG"
def test_a_file_path_instead_of_dir_returns_empty(self, tmp_path):
f = tmp_path / "file.md"
f.write_text("x", encoding="utf-8")
# Pointed at a file, not a directory → fail-open.
assert load_agent_instructions(str(f)) == ""