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29 changes: 15 additions & 14 deletions tests/entrypoints/openai/responses/test_harmony.py
Original file line number Diff line number Diff line change
Expand Up @@ -1259,27 +1259,28 @@ async def test_system_prompt_override(client: OpenAI, model_name: str):
assert response.status == "completed"
assert response.output_text is not None

# Verify the response reflects the pirate personality
output_text = response.output_text.lower()
pirate_indicators = ["arrr", "matey", "ahoy", "ye", "sea"]
has_pirate_language = any(
indicator in output_text for indicator in pirate_indicators
)
assert has_pirate_language, (
f"Expected pirate language in response, got: {response.output_text}"
)

# Verify the reasoning mentions the custom system prompt
# Extract reasoning first (needed for relaxed persona check)
reasoning_item = None
for item in response.output:
if item.type == "reasoning":
reasoning_item = item
break

assert reasoning_item is not None, "Expected reasoning item in output"
reasoning_text = reasoning_item.content[0].text.lower()
assert "pirate" in reasoning_text, (
f"Expected reasoning to mention pirate, got: {reasoning_text}"

# Verify the custom system prompt was applied: either response uses pirate
# language, or reasoning mentions the pirate persona. Models may occasionally
# produce generic replies despite considering the persona.
output_text = response.output_text.lower()
pirate_indicators = ["arrr", "matey", "ahoy", "ye", "sea", "aye"]
has_pirate_language = any(
indicator in output_text for indicator in pirate_indicators
)
reasoning_mentions_pirate = "pirate" in reasoning_text
assert has_pirate_language or reasoning_mentions_pirate, (
f"Expected pirate language in response or 'pirate' in reasoning. "
f"Response: {response.output_text!r}. Reasoning excerpt: "
f"{reasoning_text[:200]!r}..."
)

# Test 2: Verify system message is not duplicated in input_messages
Expand Down