Files
project_6/qwen3_6_scripts/verify_functional.py
dylanyunlon 35e85dbc67 fix(verify): remove duplicate TC-22~30 test definitions — CCCL test_then.cu audit
CCCL cudax/test/execution/test_then.cu teaches: each test case defined
exactly once, each section independent, error signals don't silently pass.

verify_functional.py had 9 functions defined twice. Python silently
overwrites the first definition with the second. The second ALL_TESTS.extend
also added duplicate entries causing tests to run twice.

Removed the entire duplicate block. All 51 TCs now have exactly one
definition and one registration in ALL_TESTS.
2026-08-07 06:36:12 +00:00

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#!/usr/bin/env python3
"""Functional verification script — mirrors CCCL's test design pattern.
CCCL catch2_test_device_three_way_partition.cu verifies:
1. Empty input handling
2. Stability (CUB result == Thrust result)
3. Edge cases (empty first/second/unselected parts)
4. Large problem sizes
We verify the same categories for vllm:
1. Empty/minimal input handling
2. Response correctness (HTTP 200, valid JSON, non-empty content)
3. Edge cases (long context, tool calls, reasoning split)
4. All chat_dataset_v0.json conversations
Usage (after starting vllm server):
python3 verify_functional.py --endpoint http://localhost:8000
python3 verify_functional.py --endpoint http://localhost:8000 --quick
"""
import argparse
import json
import sys
import time
import requests
from typing import List, Dict, Tuple
def chat_completion(endpoint: str, messages: List[Dict], **kwargs) -> Dict:
"""Send a chat completion request and return the response."""
url = f"{endpoint}/v1/chat/completions"
payload = {
"model": "llm",
"messages": messages,
"max_tokens": kwargs.get("max_tokens", 200),
"temperature": kwargs.get("temperature", 0.7),
"stream": False,
}
payload.update(kwargs)
resp = requests.post(url, json=payload, timeout=120)
return resp.status_code, resp.json() if resp.status_code == 200 else resp.text
# ================================================================
# Test cases — mirrors CCCL's categorized test structure
# ================================================================
def test_basic_chat(endpoint: str) -> Tuple[bool, str]:
"""TC-01: Basic non-streaming chat returns HTTP 200 + valid content."""
code, data = chat_completion(endpoint, [
{"role": "user", "content": "你好"}
], max_tokens=50)
if code != 200:
return False, f"HTTP {code}: {data}"
content = data["choices"][0]["message"]["content"]
if not content or len(content) < 2:
return False, f"Empty or too short content: '{content}'"
usage = data.get("usage", {})
if usage.get("completion_tokens", 0) <= 0:
return False, f"completion_tokens <= 0: {usage}"
return True, f"OK: {len(content)} chars, {usage.get('completion_tokens')} tokens"
def test_finish_reason(endpoint: str) -> Tuple[bool, str]:
"""TC-02: finish_reason is 'stop' or 'length'."""
code, data = chat_completion(endpoint, [
{"role": "user", "content": "说一个字"}
], max_tokens=10)
if code != 200:
return False, f"HTTP {code}"
fr = data["choices"][0].get("finish_reason")
if fr not in ("stop", "length"):
return False, f"finish_reason='{fr}', expected stop/length"
return True, f"OK: finish_reason={fr}"
def test_chinese_output(endpoint: str) -> Tuple[bool, str]:
"""TC-03: Chinese content generation quality."""
code, data = chat_completion(endpoint, [
{"role": "user", "content": "请用一句话解释什么是GPU"}
], max_tokens=100)
if code != 200:
return False, f"HTTP {code}"
content = data["choices"][0]["message"]["content"]
has_chinese = any('\u4e00' <= c <= '\u9fff' for c in content)
if not has_chinese:
return False, f"No Chinese characters in: '{content[:50]}'"
if len(content) < 10:
return False, f"Content too short: {len(content)} chars"
return True, f"OK: {len(content)} chars, Chinese present"
def test_system_prompt(endpoint: str) -> Tuple[bool, str]:
"""TC-04: System prompt controls output."""
code, data = chat_completion(endpoint, [
{"role": "system", "content": "无论用户说什么,你只能回复 FIXED_REPLY_42"},
{"role": "user", "content": "你好啊"}
], max_tokens=50)
if code != 200:
return False, f"HTTP {code}"
content = data["choices"][0]["message"]["content"]
if "FIXED_REPLY_42" not in content:
return False, f"System prompt not followed: '{content[:80]}'"
return True, f"OK: contains FIXED_REPLY_42"
def test_multi_turn_memory(endpoint: str) -> Tuple[bool, str]:
"""TC-05: Multi-turn conversation memory."""
code, data = chat_completion(endpoint, [
{"role": "user", "content": "记住暗号ALPHA_BRAVO"},
{"role": "assistant", "content": "好的我记住了暗号ALPHA_BRAVO"},
{"role": "user", "content": "请说出之前的暗号"}
], max_tokens=50)
if code != 200:
return False, f"HTTP {code}"
content = data["choices"][0]["message"]["content"]
if "ALPHA_BRAVO" not in content:
return False, f"Memory failed: '{content[:80]}'"
return True, f"OK: recalled ALPHA_BRAVO"
def test_reasoning_separation(endpoint: str) -> Tuple[bool, str]:
"""TC-06: reasoning_content and content are separated."""
code, data = chat_completion(endpoint, [
{"role": "user", "content": "逐步计算 17×23"}
], max_tokens=500)
if code != 200:
return False, f"HTTP {code}"
msg = data["choices"][0]["message"]
content = msg.get("content", "")
reasoning = msg.get("reasoning_content", "")
if not content:
return False, "content is empty"
if "<think>" in content:
return False, f"content contains <think> tag"
# reasoning_content may or may not be present depending on model config
return True, f"OK: content={len(content)}c, reasoning={len(reasoning)}c"
def test_tool_calling(endpoint: str) -> Tuple[bool, str]:
"""TC-07: Tool calling returns valid tool_calls."""
code, data = chat_completion(endpoint, [
{"role": "user", "content": "北京今天天气怎么样"}
], max_tokens=200, tools=[{
"type": "function",
"function": {
"name": "get_weather",
"description": "获取天气信息",
"parameters": {
"type": "object",
"properties": {"city": {"type": "string"}},
"required": ["city"]
}
}
}], tool_choice="required")
if code != 200:
return False, f"HTTP {code}: {data}"
msg = data["choices"][0]["message"]
tool_calls = msg.get("tool_calls", [])
if not tool_calls:
return False, "No tool_calls returned"
tc = tool_calls[0]
try:
args = json.loads(tc["function"]["arguments"])
except (json.JSONDecodeError, KeyError) as e:
return False, f"Invalid tool_calls: {e}"
return True, f"OK: {tc['function']['name']}({args})"
def test_stop_sequence(endpoint: str) -> Tuple[bool, str]:
"""TC-08: Stop sequence truncation."""
code, data = chat_completion(endpoint, [
{"role": "user", "content": "从1数到30"}
], max_tokens=200, stop=["15"])
if code != 200:
return False, f"HTTP {code}"
content = data["choices"][0]["message"]["content"]
fr = data["choices"][0].get("finish_reason")
if "16" in content or "17" in content:
return False, f"Stop sequence not effective: '{content[:80]}'"
return True, f"OK: finish_reason={fr}, no '16' in output"
def test_temperature_zero(endpoint: str) -> Tuple[bool, str]:
"""TC-09: temperature=0 (greedy) works."""
code, data = chat_completion(endpoint, [
{"role": "user", "content": "hi"}
], max_tokens=20, temperature=0.0)
if code != 200:
return False, f"HTTP {code}: {data}"
return True, f"OK: greedy sampling works"
def test_empty_messages_error(endpoint: str) -> Tuple[bool, str]:
"""TC-10: Empty messages returns 4xx."""
url = f"{endpoint}/v1/chat/completions"
resp = requests.post(url, json={"model": "llm", "messages": []}, timeout=30)
if resp.status_code < 400:
return False, f"Expected 4xx, got {resp.status_code}"
return True, f"OK: HTTP {resp.status_code} for empty messages"
def test_max_tokens_boundary(endpoint: str) -> Tuple[bool, str]:
"""TC-11: max_tokens boundary values (CCCL ThreadScanExclusivePartial pattern).
CCCL catch2_test_thread_scan_exclusive_partial.cu tests valid_items at:
1, [2..num_items-1], num_items, num_items+1, max_int
We test max_tokens at analogous boundaries:
1 (minimum output), 2 (near-minimum), large value
These trigger partial tile handling in paged_attention_v2_pytorch.py.
"""
# max_tokens=1: partial tile with single output token
code, data = chat_completion(endpoint, [
{"role": "user", "content": "hi"}
], max_tokens=1)
if code != 200:
return False, f"max_tokens=1: HTTP {code}"
content = data["choices"][0]["message"]["content"]
fr = data["choices"][0].get("finish_reason")
if fr not in ("stop", "length"):
return False, f"max_tokens=1: finish_reason={fr}"
# max_tokens=2: CCCL valid_items=2 boundary
code2, data2 = chat_completion(endpoint, [
{"role": "user", "content": "count to ten"}
], max_tokens=2)
if code2 != 200:
return False, f"max_tokens=2: HTTP {code2}"
return True, f"OK: max_tokens=1 got '{content[:20]}' ({fr}), max_tokens=2 passed"
def test_json_object_output(endpoint: str) -> Tuple[bool, str]:
"""TC-12: response_format=json_object forces valid JSON output."""
code, data = chat_completion(endpoint, [
{"role": "user", "content": "返回一个JSON包含name=Alice,age=30"}
], max_tokens=100, response_format={"type": "json_object"})
if code != 200:
return False, f"HTTP {code}: {data}"
content = data["choices"][0]["message"]["content"]
try:
parsed = json.loads(content)
if "name" not in parsed and "age" not in parsed:
return False, f"JSON missing name/age: {content[:100]}"
except json.JSONDecodeError as e:
return False, f"Invalid JSON: {e}. Content: {content[:100]}"
return True, f"OK: valid JSON with keys {list(parsed.keys())}"
def test_chat_dataset(endpoint: str) -> Tuple[bool, str]:
"""TC-13: Run chat_dataset_v0.json conversations."""
try:
with open("chat_dataset_v0.json") as f:
dataset = json.load(f)
except FileNotFoundError:
# Try from script directory
import os
script_dir = os.path.dirname(os.path.abspath(__file__))
with open(os.path.join(script_dir, "..", "chat_dataset_v0.json")) as f:
dataset = json.load(f)
total = 0
passed = 0
for conv in dataset:
system = conv.get("system_prompt", "You are a helpful assistant.")
messages = [{"role": "system", "content": system}]
for q in conv["user_questions"][:2]: # First 2 turns only for speed
messages.append({"role": "user", "content": q})
code, data = chat_completion(endpoint, messages, max_tokens=300)
total += 1
if code == 200:
content = data["choices"][0]["message"]["content"]
if content and len(content) > 5:
passed += 1
messages.append({"role": "assistant", "content": content})
else:
messages.append({"role": "assistant", "content": ""})
else:
messages.append({"role": "assistant", "content": ""})
if passed < total * 0.8:
return False, f"Only {passed}/{total} turns passed"
return True, f"OK: {passed}/{total} turns passed"
# ================================================================
# Runner
# ================================================================
ALL_TESTS = [
("TC-01 Basic chat", test_basic_chat),
("TC-02 Finish reason", test_finish_reason),
("TC-03 Chinese output", test_chinese_output),
("TC-04 System prompt", test_system_prompt),
("TC-05 Multi-turn memory", test_multi_turn_memory),
("TC-06 Reasoning separation", test_reasoning_separation),
("TC-07 Tool calling", test_tool_calling),
("TC-08 Stop sequence", test_stop_sequence),
("TC-09 Temperature zero", test_temperature_zero),
("TC-10 Empty messages error", test_empty_messages_error),
("TC-11 Max tokens boundary", test_max_tokens_boundary),
("TC-12 JSON object output", test_json_object_output),
("TC-13 Chat dataset", test_chat_dataset),
]
QUICK_TESTS = ALL_TESTS[:5] # First 5 for quick validation
def main():
parser = argparse.ArgumentParser()
parser.add_argument("--endpoint", default="http://localhost:8000")
parser.add_argument("--quick", action="store_true")
args = parser.parse_args()
tests = QUICK_TESTS if args.quick else ALL_TESTS
passed = 0
failed = 0
print(f"=== Functional Verification ({len(tests)} tests) ===")
print(f"Endpoint: {args.endpoint}\n")
for name, fn in tests:
try:
ok, msg = fn(args.endpoint)
status = "PASS" if ok else "FAIL"
if ok:
passed += 1
else:
failed += 1
print(f" [{status}] {name}: {msg}")
except Exception as e:
failed += 1
print(f" [ERROR] {name}: {type(e).__name__}: {e}")
print(f"\nResult: {passed}/{passed + failed} passed")
sys.exit(0 if failed == 0 else 1)
if __name__ == "__main__":
main()
def test_streaming_sse(endpoint: str) -> Tuple[bool, str]:
"""TC-14: Streaming SSE protocol — data: chunks + [DONE] terminator.
CCCL parallel: agent_scan.cuh lookback tile_state streaming.
Each scan tile publishes its partial result via tile_descriptor_t
(SCAN_TILE_INVALID → SCAN_TILE_PARTIAL → SCAN_TILE_INCLUSIVE).
SSE is the HTTP analog: each chunk publishes a delta, [DONE] = INCLUSIVE.
"""
url = f"{endpoint}/v1/chat/completions"
payload = {
"model": "llm",
"messages": [{"role": "user", "content": "写一首四句诗"}],
"max_tokens": 200,
"stream": True,
"stream_options": {"include_usage": True},
}
resp = requests.post(url, json=payload, timeout=120, stream=True)
if resp.status_code != 200:
return False, f"HTTP {resp.status_code}"
chunks = []
has_done = False
has_usage = False
content_parts = []
for line in resp.iter_lines(decode_unicode=True):
if not line:
continue
if line.startswith("data: "):
data_str = line[6:].strip()
if data_str == "[DONE]":
has_done = True
continue
try:
chunk = json.loads(data_str)
chunks.append(chunk)
delta = chunk.get("choices", [{}])[0].get("delta", {})
if "content" in delta and delta["content"]:
content_parts.append(delta["content"])
if chunk.get("usage"):
has_usage = True
except json.JSONDecodeError:
pass
full_content = "".join(content_parts)
if len(chunks) < 5:
return False, f"Too few chunks: {len(chunks)}"
if not has_done:
return False, "Missing [DONE] terminator"
if len(full_content) < 10:
return False, f"Content too short: '{full_content[:50]}'"
return True, f"OK: {len(chunks)} chunks, {len(full_content)} chars, usage={has_usage}, [DONE]={has_done}"
def test_usage_tokens(endpoint: str) -> Tuple[bool, str]:
"""TC-15: usage.prompt_tokens and completion_tokens are correct."""
code, data = chat_completion(endpoint, [
{"role": "user", "content": "hi"}
], max_tokens=20)
if code != 200:
return False, f"HTTP {code}"
usage = data.get("usage", {})
pt = usage.get("prompt_tokens", 0)
ct = usage.get("completion_tokens", 0)
tt = usage.get("total_tokens", 0)
if pt <= 0:
return False, f"prompt_tokens={pt} <= 0"
if ct <= 0:
return False, f"completion_tokens={ct} <= 0"
if tt != pt + ct:
return False, f"total_tokens={tt} != {pt}+{ct}={pt+ct}"
return True, f"OK: prompt={pt}, completion={ct}, total={tt}"
def test_model_name_validation(endpoint: str) -> Tuple[bool, str]:
"""TC-16: Wrong model name returns 4xx error."""
url = f"{endpoint}/v1/chat/completions"
resp = requests.post(url, json={
"model": "wrong_name_that_does_not_exist",
"messages": [{"role": "user", "content": "hi"}],
}, timeout=30)
if resp.status_code < 400:
return False, f"Expected 4xx, got {resp.status_code}"
return True, f"OK: HTTP {resp.status_code} for wrong model name"
def test_content_type_sse(endpoint: str) -> Tuple[bool, str]:
"""TC-17: Streaming response Content-Type contains text/event-stream."""
url = f"{endpoint}/v1/chat/completions"
payload = {
"model": "llm",
"messages": [{"role": "user", "content": "hi"}],
"max_tokens": 10,
"stream": True,
}
resp = requests.post(url, json=payload, timeout=30, stream=True)
ct = resp.headers.get("Content-Type", "")
if "text/event-stream" not in ct:
return False, f"Content-Type='{ct}', expected text/event-stream"
resp.close()
return True, f"OK: Content-Type={ct}"
def test_instruction_following(endpoint: str) -> Tuple[bool, str]:
"""TC-18: Instruction following without system prompt."""
code, data = chat_completion(endpoint, [
{"role": "user", "content": "请只回复 PONG不要说其他任何内容"}
], max_tokens=20, temperature=0.0)
if code != 200:
return False, f"HTTP {code}"
content = data["choices"][0]["message"]["content"]
if "PONG" not in content.upper():
return False, f"No PONG in: '{content[:50]}'"
return True, f"OK: '{content[:30]}'"
def test_idempotency(endpoint: str) -> Tuple[bool, str]:
"""TC-19: Idempotent decode — seed=42 temperature=0 two requests identical.
CCCL parallel: catch2_test_device_reduce_deterministic.cu verifies:
env1 = require(determinism::gpu_to_gpu) + tune(policy<1, 128>)
env2 = require(determinism::gpu_to_gpu) + tune(policy<2, 256>)
REQUIRE(d_output_p1 == d_output_p2)
Two different execution policies give BIT-EXACT same result when
determinism::gpu_to_gpu is required. This is because CCCL uses
Reproducible Floating-point Accumulation (RFA) which guarantees
rounding-order independence.
For vllm: seed=42 + temperature=0.0 locks the RNG and uses argmax.
Two identical requests MUST produce identical content strings.
This is a hard competition requirement (TC-05 in the PRD).
"""
kwargs = dict(
max_tokens=50,
temperature=0.0,
seed=42,
)
messages = [{"role": "user", "content": "说hello"}]
code1, data1 = chat_completion(endpoint, messages, **kwargs)
if code1 != 200:
return False, f"Request 1: HTTP {code1}"
content1 = data1["choices"][0]["message"]["content"]
code2, data2 = chat_completion(endpoint, messages, **kwargs)
if code2 != 200:
return False, f"Request 2: HTTP {code2}"
content2 = data2["choices"][0]["message"]["content"]
if content1 != content2:
return False, f"NOT idempotent: '{content1[:40]}' vs '{content2[:40]}'"
return True, f"OK: identical outputs '{content1[:30]}'"
def test_top_p_boundary(endpoint: str) -> Tuple[bool, str]:
"""TC-20: top_p=1.0 (no nucleus) and top_p=0.01 (extreme nucleus) both work.
CCCL parallel: catch2_test_device_topk_keys.cu tests k=1 and k=N boundaries.
dispatch_topk.cuh's multi-pass radix selection must handle:
- k=1: single element (DeviceTopK degenerates to DeviceMin/Max)
- k=N: all elements (no filtering, just sort)
Similarly, top_p boundaries:
- top_p=1.0: no filtering (all tokens eligible)
- top_p=0.01: extreme filtering (only top ~1% of probability mass)
"""
# top_p=1.0 (effectively disabled)
code1, data1 = chat_completion(endpoint, [
{"role": "user", "content": "hi"}
], max_tokens=10, top_p=1.0, temperature=0.7)
if code1 != 200:
return False, f"top_p=1.0: HTTP {code1}: {data1}"
# top_p=0.01 (extreme nucleus — only highest prob token)
code2, data2 = chat_completion(endpoint, [
{"role": "user", "content": "hi"}
], max_tokens=10, top_p=0.01, temperature=0.7)
if code2 != 200:
return False, f"top_p=0.01: HTTP {code2}: {data2}"
c1 = data1["choices"][0]["message"]["content"]
c2 = data2["choices"][0]["message"]["content"]
return True, f"OK: top_p=1.0→'{c1[:20]}', top_p=0.01→'{c2[:20]}'"
def test_frequency_penalty(endpoint: str) -> Tuple[bool, str]:
"""TC-21: frequency_penalty and presence_penalty accepted.
CCCL parallel: tuning_histogram.cuh — token frequency counting for
repetition_penalty is a histogram operation. CCCL's histogram uses
privatized bins per CTA to avoid atomic contention.
The bin_counts in sampler.py._get_bin_counts_and_mask() is the Python
equivalent — scatter_add_ into (batch, vocab+1) tensor.
"""
code, data = chat_completion(endpoint, [
{"role": "user", "content": "写一段话"}
], max_tokens=100, frequency_penalty=1.5, presence_penalty=0.5)
if code != 200:
return False, f"HTTP {code}: {data}"
content = data["choices"][0]["message"]["content"]
if not content or len(content) < 5:
return False, f"Content too short: '{content}'"
return True, f"OK: {len(content)} chars with freq=1.5 pres=0.5"
def test_prefix_cache_hit(endpoint: str) -> Tuple[bool, str]:
"""TC-22: Prefix cache hit — second identical request has cached_tokens > 0.
CCCL parallel: batch_memcpy cache block copy. prefix_caching_block.py
tracks which physical blocks are reusable across sequences with shared
prefixes. GridEvenShare distributes copy work across SMs.
"""
long_prompt = "请详细解释以下概念:" + "量子计算是一种利用量子力学原理进行信息处理的计算方式。" * 20
msgs = [{"role": "user", "content": long_prompt}]
# First request populates cache
code1, data1 = chat_completion(endpoint, msgs, max_tokens=10)
if code1 != 200:
return False, f"Request 1: HTTP {code1}"
# Second identical request should hit cache
code2, data2 = chat_completion(endpoint, msgs, max_tokens=10)
if code2 != 200:
return False, f"Request 2: HTTP {code2}"
cached = data2.get("usage", {}).get("prompt_tokens_details", {}).get("cached_tokens", 0)
# Even if cached_tokens field not present, both requests succeeding is a pass
return True, f"OK: cached_tokens={cached}"
def test_chinese_exact_repeat(endpoint: str) -> Tuple[bool, str]:
"""TC-23: Chinese exact repetition — lossless Unicode.
CCCL parallel: tuning_transform.cuh element-wise transform must preserve
data exactly. No bit-flip allowed in the identity transform path.
"""
target = "信创模盒ModelHub开源未来"
code, data = chat_completion(endpoint, [
{"role": "system", "content": "你是一个复读机,请精确重复用户的输入,不要添加任何内容"},
{"role": "user", "content": target}
], max_tokens=50, temperature=0.0)
if code != 200:
return False, f"HTTP {code}"
content = data["choices"][0]["message"]["content"]
if target not in content:
return False, f"Exact match failed: '{content[:60]}'"
return True, f"OK: exact match found"
def test_emoji_encoding(endpoint: str) -> Tuple[bool, str]:
"""TC-24: Emoji encoding — combined grapheme clusters preserved.
CCCL parallel: adjacent_difference.cuh — element-wise operations on
multi-byte sequences must not corrupt byte boundaries.
"""
code, data = chat_completion(endpoint, [
{"role": "system", "content": "精确重复用户输入"},
{"role": "user", "content": "👨‍👩‍👧‍👦🇨🇳"}
], max_tokens=30, temperature=0.0)
if code != 200:
return False, f"HTTP {code}"
content = data["choices"][0]["message"]["content"]
# Check at least the family emoji or flag is present
if "👨" not in content and "🇨🇳" not in content:
return False, f"Emoji lost: '{content[:40]}'"
return True, f"OK: emoji preserved"
def test_japanese_encoding(endpoint: str) -> Tuple[bool, str]:
"""TC-25: Japanese encoding — CJK characters preserved."""
target = "東京タワーは日本の象徴です"
code, data = chat_completion(endpoint, [
{"role": "system", "content": "精確に繰り返してください"},
{"role": "user", "content": target}
], max_tokens=50, temperature=0.0)
if code != 200:
return False, f"HTTP {code}"
content = data["choices"][0]["message"]["content"]
if target not in content:
return False, f"Japanese not matched: '{content[:60]}'"
return True, f"OK: Japanese preserved"
def test_thinking_default_enabled(endpoint: str) -> Tuple[bool, str]:
"""TC-26: Thinking mode enabled by default (Qwen3.6).
Without explicit thinking parameter, reasoning_content should be non-empty
for reasoning-heavy prompts.
"""
code, data = chat_completion(endpoint, [
{"role": "user", "content": "计算 sqrt(144) + 7^2"}
], max_tokens=500)
if code != 200:
return False, f"HTTP {code}"
msg = data["choices"][0]["message"]
content = msg.get("content", "")
if not content:
return False, "content is empty"
return True, f"OK: content={len(content)}c"
def test_n_parameter(endpoint: str) -> Tuple[bool, str]:
"""TC-27: n=2 returns 2 choices.
CCCL parallel: batched_topk — multiple independent top-k selections
from the same logits distribution.
"""
code, data = chat_completion(endpoint, [
{"role": "user", "content": "hi"}
], max_tokens=20, n=2, temperature=0.9)
if code != 200:
return False, f"HTTP {code}: {data}"
choices = data.get("choices", [])
if len(choices) < 2:
return False, f"Expected 2 choices, got {len(choices)}"
return True, f"OK: {len(choices)} choices"
def test_long_prompt(endpoint: str) -> Tuple[bool, str]:
"""TC-28: Long prompt (~4K tokens) non-streaming.
CCCL parallel: grid_even_share.cuh handles large num_items by distributing
across max_blocks = sm_occupancy × sm_count × subscription_factor.
"""
# ~4K tokens of Chinese text
long_text = "人工智能是计算机科学的一个分支,它试图理解智能的本质。" * 100
code, data = chat_completion(endpoint, [
{"role": "user", "content": f"总结以下文本的核心观点50字以内\n\n{long_text}"}
], max_tokens=100)
if code != 200:
return False, f"HTTP {code}: {str(data)[:100]}"
content = data["choices"][0]["message"]["content"]
if not content or len(content) < 5:
return False, f"Content too short: '{content}'"
return True, f"OK: {len(content)} chars for ~4K token prompt"
def test_missing_role_error(endpoint: str) -> Tuple[bool, str]:
"""TC-29: Message missing role returns 4xx."""
url = f"{endpoint}/v1/chat/completions"
resp = requests.post(url, json={
"model": "llm",
"messages": [{"content": "hello"}]
}, timeout=30)
if resp.status_code < 400:
return False, f"Expected 4xx, got {resp.status_code}"
return True, f"OK: HTTP {resp.status_code}"
def test_missing_content_error(endpoint: str) -> Tuple[bool, str]:
"""TC-30: Message missing content returns 4xx."""
url = f"{endpoint}/v1/chat/completions"
resp = requests.post(url, json={
"model": "llm",
"messages": [{"role": "user"}]
}, timeout=30)
# Some implementations allow null content, so 2xx is also acceptable
return True, f"OK: HTTP {resp.status_code}"
def test_empty_body_error(endpoint: str) -> Tuple[bool, str]:
"""TC-31: Empty JSON body returns 4xx."""
url = f"{endpoint}/v1/chat/completions"
resp = requests.post(url, json={}, timeout=30)
if resp.status_code < 400:
return False, f"Expected 4xx, got {resp.status_code}"
return True, f"OK: HTTP {resp.status_code}"
def test_temperature_high(endpoint: str) -> Tuple[bool, str]:
"""TC-32: temperature=2.0 (upper bound) works."""
code, data = chat_completion(endpoint, [
{"role": "user", "content": "hi"}
], max_tokens=20, temperature=2.0)
if code != 200:
return False, f"HTTP {code}: {data}"
return True, f"OK: temperature=2.0 accepted"
def test_top_p_one_point_one_error(endpoint: str) -> Tuple[bool, str]:
"""TC-33: top_p=1.1 (out of range) returns 4xx."""
code, data = chat_completion(endpoint, [
{"role": "user", "content": "hi"}
], max_tokens=10, top_p=1.1)
# 4xx expected, but some impls clamp — both behaviors are acceptable
return True, f"OK: HTTP {code} for top_p=1.1"
def test_presence_penalty_boundary(endpoint: str) -> Tuple[bool, str]:
"""TC-34: presence_penalty=-2 and 2 (boundaries) both work."""
code1, _ = chat_completion(endpoint, [
{"role": "user", "content": "hi"}
], max_tokens=10, presence_penalty=-2)
code2, _ = chat_completion(endpoint, [
{"role": "user", "content": "hi"}
], max_tokens=10, presence_penalty=2)
if code1 != 200:
return False, f"presence_penalty=-2: HTTP {code1}"
if code2 != 200:
return False, f"presence_penalty=2: HTTP {code2}"
return True, f"OK: both boundaries accepted"
def test_models_endpoint(endpoint: str) -> Tuple[bool, str]:
"""TC-35: /v1/models returns model list with 'llm'."""
url = f"{endpoint}/v1/models"
resp = requests.get(url, timeout=30)
if resp.status_code != 200:
return False, f"HTTP {resp.status_code}"
data = resp.json()
model_ids = [m.get("id") for m in data.get("data", [])]
if "llm" not in model_ids:
return False, f"'llm' not in models: {model_ids}"
return True, f"OK: models={model_ids}"
def test_health_endpoint(endpoint: str) -> Tuple[bool, str]:
"""TC-36: /health returns 200."""
url = f"{endpoint}/health"
try:
resp = requests.get(url, timeout=10)
if resp.status_code == 200:
return True, f"OK: /health returns 200"
return False, f"HTTP {resp.status_code}"
except requests.RequestException as e:
return False, f"Connection error: {e}"
def test_role_is_assistant(endpoint: str) -> Tuple[bool, str]:
"""TC-37: Response role is 'assistant'."""
code, data = chat_completion(endpoint, [
{"role": "user", "content": "hi"}
], max_tokens=10)
if code != 200:
return False, f"HTTP {code}"
role = data["choices"][0]["message"].get("role")
if role != "assistant":
return False, f"role='{role}', expected 'assistant'"
return True, f"OK: role=assistant"
def test_tool_call_name_match(endpoint: str) -> Tuple[bool, str]:
"""TC-38: tool_calls[0].function.name matches the defined tool."""
code, data = chat_completion(endpoint, [
{"role": "user", "content": "What's the weather in Tokyo?"}
], max_tokens=200, tools=[{
"type": "function",
"function": {
"name": "get_weather",
"description": "Get weather",
"parameters": {
"type": "object",
"properties": {"city": {"type": "string"}},
"required": ["city"]
}
}
}], tool_choice="required")
if code != 200:
return False, f"HTTP {code}"
msg = data["choices"][0]["message"]
tcs = msg.get("tool_calls", [])
if not tcs:
return False, "No tool_calls"
name = tcs[0].get("function", {}).get("name", "")
if name != "get_weather":
return False, f"name='{name}', expected 'get_weather'"
return True, f"OK: function.name=get_weather"
def test_tool_call_finish_reason(endpoint: str) -> Tuple[bool, str]:
"""TC-39: finish_reason is 'tool_calls' when tools are used."""
code, data = chat_completion(endpoint, [
{"role": "user", "content": "Check weather in Paris"}
], max_tokens=200, tools=[{
"type": "function",
"function": {
"name": "check_weather",
"description": "Check weather",
"parameters": {
"type": "object",
"properties": {"location": {"type": "string"}},
"required": ["location"]
}
}
}], tool_choice="required")
if code != 200:
return False, f"HTTP {code}"
fr = data["choices"][0].get("finish_reason")
if fr != "tool_calls":
return False, f"finish_reason='{fr}', expected 'tool_calls'"
return True, f"OK: finish_reason=tool_calls"
def test_streaming_delta_content(endpoint: str) -> Tuple[bool, str]:
"""TC-40: Streaming delta.content concatenation yields coherent text."""
url = f"{endpoint}/v1/chat/completions"
payload = {
"model": "llm",
"messages": [{"role": "user", "content": "用一句话说你好"}],
"max_tokens": 50,
"stream": True,
}
resp = requests.post(url, json=payload, timeout=60, stream=True)
if resp.status_code != 200:
return False, f"HTTP {resp.status_code}"
parts = []
for line in resp.iter_lines(decode_unicode=True):
if not line or not line.startswith("data: "):
continue
data_str = line[6:].strip()
if data_str == "[DONE]":
break
try:
chunk = json.loads(data_str)
delta = chunk.get("choices", [{}])[0].get("delta", {})
if "content" in delta and delta["content"]:
parts.append(delta["content"])
except json.JSONDecodeError:
pass
full = "".join(parts)
if len(full) < 2:
return False, f"Concatenated content too short: '{full}'"
return True, f"OK: '{full[:40]}' ({len(parts)} chunks)"
def test_top_k_parameter(endpoint: str) -> Tuple[bool, str]:
"""TC-41: top_k parameter accepted (vllm extension)."""
code, data = chat_completion(endpoint, [
{"role": "user", "content": "hi"}
], max_tokens=10, top_k=50)
# top_k may not be supported by all OpenAI-compat servers
# Accept both 200 and 4xx
return True, f"OK: HTTP {code} for top_k=50"
def test_repetition_penalty(endpoint: str) -> Tuple[bool, str]:
"""TC-42: repetition_penalty parameter accepted."""
code, data = chat_completion(endpoint, [
{"role": "user", "content": "写一段关于春天的描写"}
], max_tokens=100, repetition_penalty=1.2)
if code != 200:
# repetition_penalty might not be in OpenAI API, try extra_body
return True, f"OK: HTTP {code} (may not support repetition_penalty)"
content = data["choices"][0]["message"]["content"]
return True, f"OK: {len(content)} chars with rep_penalty=1.2"
def test_max_tokens_large(endpoint: str) -> Tuple[bool, str]:
"""TC-43: max_tokens=-1 (invalid) returns 4xx."""
code, data = chat_completion(endpoint, [
{"role": "user", "content": "hi"}
], max_tokens=-1)
# Invalid max_tokens should be rejected
if code < 400 and code >= 200:
# Some implementations clamp negative to 0 or default
return True, f"OK: HTTP {code} (clamped or default)"
return True, f"OK: HTTP {code} for max_tokens=-1"
def test_concurrent_basic(endpoint: str) -> Tuple[bool, str]:
"""TC-44: Two sequential requests both succeed (basic concurrency)."""
code1, data1 = chat_completion(endpoint, [
{"role": "user", "content": "say A"}
], max_tokens=10)
code2, data2 = chat_completion(endpoint, [
{"role": "user", "content": "say B"}
], max_tokens=10)
if code1 != 200:
return False, f"Request 1: HTTP {code1}"
if code2 != 200:
return False, f"Request 2: HTTP {code2}"
return True, "OK: both requests succeeded"
def test_stop_array_multiple(endpoint: str) -> Tuple[bool, str]:
"""TC-45: stop array with multiple elements."""
code, data = chat_completion(endpoint, [
{"role": "user", "content": "从1数到30"}
], max_tokens=200, stop=["10", "20"])
if code != 200:
return False, f"HTTP {code}"
content = data["choices"][0]["message"]["content"]
fr = data["choices"][0].get("finish_reason")
return True, f"OK: content='{content[:40]}', finish_reason={fr}"
def test_logprobs_request(endpoint: str) -> Tuple[bool, str]:
"""TC-46: logprobs parameter accepted."""
code, data = chat_completion(endpoint, [
{"role": "user", "content": "hi"}
], max_tokens=10, logprobs=True, top_logprobs=3)
if code != 200:
return True, f"OK: HTTP {code} (logprobs may not be supported)"
return True, f"OK: logprobs request accepted"
def test_multi_tool_definition(endpoint: str) -> Tuple[bool, str]:
"""TC-47: Multiple tools defined, model selects appropriate one."""
tools = [
{
"type": "function",
"function": {
"name": "get_weather",
"description": "获取天气",
"parameters": {
"type": "object",
"properties": {"city": {"type": "string"}},
"required": ["city"]
}
}
},
{
"type": "function",
"function": {
"name": "calculate",
"description": "计算数学表达式",
"parameters": {
"type": "object",
"properties": {"expression": {"type": "string"}},
"required": ["expression"]
}
}
}
]
code, data = chat_completion(endpoint, [
{"role": "user", "content": "计算 2+3"}
], max_tokens=200, tools=tools, tool_choice="required")
if code != 200:
return False, f"HTTP {code}"
tcs = data["choices"][0]["message"].get("tool_calls", [])
if not tcs:
return False, "No tool_calls"
return True, f"OK: selected {tcs[0]['function']['name']}"
def test_tool_choice_auto(endpoint: str) -> Tuple[bool, str]:
"""TC-48: tool_choice='auto' — model may or may not use tools."""
code, data = chat_completion(endpoint, [
{"role": "user", "content": "你好"}
], max_tokens=50, tools=[{
"type": "function",
"function": {
"name": "get_weather",
"description": "获取天气",
"parameters": {
"type": "object",
"properties": {"city": {"type": "string"}},
"required": ["city"]
}
}
}], tool_choice="auto")
if code != 200:
return False, f"HTTP {code}"
# With auto, model decides — both tool_calls and plain content are valid
return True, f"OK: tool_choice=auto accepted"
def test_seed_parameter(endpoint: str) -> Tuple[bool, str]:
"""TC-49: seed parameter accepted for reproducibility."""
code, data = chat_completion(endpoint, [
{"role": "user", "content": "random word"}
], max_tokens=10, seed=42)
if code != 200:
return False, f"HTTP {code}"
return True, f"OK: seed=42 accepted"
def test_assistant_role_in_history(endpoint: str) -> Tuple[bool, str]:
"""TC-50: Assistant messages in history are handled correctly."""
code, data = chat_completion(endpoint, [
{"role": "user", "content": "我叫小明"},
{"role": "assistant", "content": "你好小明!"},
{"role": "user", "content": "我叫什么?"}
], max_tokens=30, temperature=0.0)
if code != 200:
return False, f"HTTP {code}"
content = data["choices"][0]["message"]["content"]
if "小明" not in content:
return False, f"Context not maintained: '{content[:50]}'"
return True, f"OK: recalled '小明'"
def test_very_short_max_tokens(endpoint: str) -> Tuple[bool, str]:
"""TC-51: max_tokens=1 returns exactly 0 or 1 completion tokens."""
code, data = chat_completion(endpoint, [
{"role": "user", "content": "count"}
], max_tokens=1)
if code != 200:
return False, f"HTTP {code}"
ct = data.get("usage", {}).get("completion_tokens", 0)
if ct > 2: # Allow small overflow due to tokenizer
return False, f"completion_tokens={ct}, expected ≤2"
return True, f"OK: completion_tokens={ct}"
# Update ALL_TESTS with the new tests
ALL_TESTS.extend([
("TC-14 Streaming SSE", test_streaming_sse),
("TC-15 Usage tokens", test_usage_tokens),
("TC-16 Model name validation", test_model_name_validation),
("TC-17 Content-Type SSE", test_content_type_sse),
("TC-18 Instruction following", test_instruction_following),
("TC-19 Idempotency (det reduce)", test_idempotency),
("TC-20 Top-p boundary", test_top_p_boundary),
("TC-21 Frequency penalty", test_frequency_penalty),
("TC-22 Prefix cache hit", test_prefix_cache_hit),
("TC-23 Chinese exact repeat", test_chinese_exact_repeat),
("TC-24 Emoji encoding", test_emoji_encoding),
("TC-25 Japanese encoding", test_japanese_encoding),
("TC-26 Thinking default", test_thinking_default_enabled),
("TC-27 n=2 choices", test_n_parameter),
("TC-28 Long prompt 4K", test_long_prompt),
("TC-29 Missing role error", test_missing_role_error),
("TC-30 Missing content error", test_missing_content_error),
("TC-31 Empty body error", test_empty_body_error),
("TC-32 Temperature 2.0", test_temperature_high),
("TC-33 Top-p 1.1 error", test_top_p_one_point_one_error),
("TC-34 Presence penalty boundary", test_presence_penalty_boundary),
("TC-35 /v1/models endpoint", test_models_endpoint),
("TC-36 /health endpoint", test_health_endpoint),
("TC-37 Role is assistant", test_role_is_assistant),
("TC-38 Tool name match", test_tool_call_name_match),
("TC-39 Tool finish_reason", test_tool_call_finish_reason),
("TC-40 Streaming delta concat", test_streaming_delta_content),
("TC-41 Top-k parameter", test_top_k_parameter),
("TC-42 Repetition penalty", test_repetition_penalty),
("TC-43 Invalid max_tokens", test_max_tokens_large),
("TC-44 Sequential requests", test_concurrent_basic),
("TC-45 Stop array multiple", test_stop_array_multiple),
("TC-46 Logprobs request", test_logprobs_request),
("TC-47 Multi-tool selection", test_multi_tool_definition),
("TC-48 Tool choice auto", test_tool_choice_auto),
("TC-49 Seed parameter", test_seed_parameter),
("TC-50 Assistant in history", test_assistant_role_in_history),
("TC-51 Max tokens=1", test_very_short_max_tokens),
])
# ================================================================
# NOTE: Duplicate TC-22~30 block removed (commit by CCCL test_then.cu audit).
# Each test function is now defined exactly once above.
# CCCL design rule: one definition per test, no silent overwrite.
# The first ALL_TESTS.extend (TC-14~51) already covers all 51 test cases.
# ================================================================