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llama-stack/llama_stack/providers/tests/inference/test_text_inference.py
LESSuseLESS 3a31611486
feat: completing text /chat-completion and /completion tests (#1223) 
# What does this PR do?

The goal is to have a fairly complete set of provider and e2e tests for
/chat-completion and /completion. This is the current list,
```
grep -oE "def test_[a-zA-Z_+]*" llama_stack/providers/tests/inference/test_text_inference.py | cut -d' ' -f2
```
- test_model_list
- test_text_completion_non_streaming
- test_text_completion_streaming
- test_text_completion_logprobs_non_streaming
- test_text_completion_logprobs_streaming
- test_text_completion_structured_output
- test_text_chat_completion_non_streaming
- test_text_chat_completion_structured_output
- test_text_chat_completion_streaming
- test_text_chat_completion_with_tool_calling
- test_text_chat_completion_with_tool_calling_streaming

```
grep -oE "def test_[a-zA-Z_+]*" tests/client-sdk/inference/test_text_inference.py | cut -d' ' -f2
```
- test_text_completion_non_streaming
- test_text_completion_streaming
- test_text_completion_log_probs_non_streaming
- test_text_completion_log_probs_streaming
- test_text_completion_structured_output
- test_text_chat_completion_non_streaming
- test_text_chat_completion_streaming
- test_text_chat_completion_with_tool_calling_and_non_streaming
- test_text_chat_completion_with_tool_calling_and_streaming
- test_text_chat_completion_with_tool_choice_required
- test_text_chat_completion_with_tool_choice_none
- test_text_chat_completion_structured_output
- test_text_chat_completion_tool_calling_tools_not_in_request

## Test plan

== Set up Ollama local server
```
OLLAMA_HOST=127.0.0.1:8321 with-proxy ollama serve
OLLAMA_HOST=127.0.0.1:8321 ollama run llama3.2:3b-instruct-fp16 --keepalive 60m
```

==  Run a provider test
```
conda activate stack
OLLAMA_URL="http://localhost:8321" \
pytest -v -s -k "ollama" --inference-model="llama3.2:3b-instruct-fp16" \
llama_stack/providers/tests/inference/test_text_inference.py::TestInference
```

== Run an e2e test
```
conda activate sherpa
with-proxy pip install llama-stack
export INFERENCE_MODEL=llama3.2:3b-instruct-fp16
export LLAMA_STACK_PORT=8322
with-proxy llama stack build --template ollama
with-proxy llama stack run --env OLLAMA_URL=http://localhost:8321 ollama
```
```
conda activate stack
LLAMA_STACK_PORT=8322 LLAMA_STACK_BASE_URL="http://localhost:8322" \
pytest -v -s --inference-model="llama3.2:3b-instruct-fp16" \
tests/client-sdk/inference/test_text_inference.py
```
2025-02-25 11:37:04 -08:00

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# Copyright (c) Meta Platforms, Inc. and affiliates.
# All rights reserved.
#
# This source code is licensed under the terms described in the LICENSE file in
# the root directory of this source tree.
import pytest
from pydantic import BaseModel, TypeAdapter, ValidationError
from llama_stack.apis.common.content_types import ToolCallParseStatus
from llama_stack.apis.inference import (
ChatCompletionResponse,
ChatCompletionResponseEventType,
ChatCompletionResponseStreamChunk,
CompletionResponse,
CompletionResponseStreamChunk,
JsonSchemaResponseFormat,
LogProbConfig,
Message,
SystemMessage,
ToolChoice,
UserMessage,
)
from llama_stack.apis.models import ListModelsResponse, Model
from llama_stack.models.llama.datatypes import (
SamplingParams,
StopReason,
ToolCall,
ToolPromptFormat,
)
from llama_stack.providers.tests.test_cases.test_case import TestCase
from .utils import group_chunks
# How to run this test:
#
# pytest -v -s llama_stack/providers/tests/inference/test_text_inference.py
# -m "(fireworks or ollama) and llama_3b"
# --env FIREWORKS_API_KEY=<your_api_key>
def get_expected_stop_reason(model: str):
return StopReason.end_of_message if ("Llama3.1" in model or "Llama-3.1" in model) else StopReason.end_of_turn
@pytest.fixture
def common_params(inference_model):
return {
"tool_choice": ToolChoice.auto,
"tool_prompt_format": (
ToolPromptFormat.json
if ("Llama3.1" in inference_model or "Llama-3.1" in inference_model)
else ToolPromptFormat.python_list
),
}
class TestInference:
# Session scope for asyncio because the tests in this class all
# share the same provider instance.
@pytest.mark.asyncio(loop_scope="session")
async def test_model_list(self, inference_model, inference_stack):
_, models_impl = inference_stack
response = await models_impl.list_models()
assert isinstance(response, ListModelsResponse)
assert isinstance(response.data, list)
assert len(response.data) >= 1
assert all(isinstance(model, Model) for model in response.data)
model_def = None
for model in response.data:
if model.identifier == inference_model:
model_def = model
break
assert model_def is not None
@pytest.mark.parametrize(
"test_case",
[
"inference:completion:non_streaming",
],
)
@pytest.mark.asyncio(loop_scope="session")
async def test_text_completion_non_streaming(self, inference_model, inference_stack, test_case):
inference_impl, _ = inference_stack
tc = TestCase(test_case)
response = await inference_impl.completion(
content=tc["content"],
stream=False,
model_id=inference_model,
sampling_params=SamplingParams(
max_tokens=50,
),
)
assert isinstance(response, CompletionResponse)
assert tc["expected"] in response.content
@pytest.mark.parametrize(
"test_case",
[
"inference:completion:streaming",
],
)
@pytest.mark.asyncio(loop_scope="session")
async def test_text_completion_streaming(self, inference_model, inference_stack, test_case):
inference_impl, _ = inference_stack
tc = TestCase(test_case)
chunks = [
r
async for r in await inference_impl.completion(
content=tc["content"],
stream=True,
model_id=inference_model,
sampling_params=SamplingParams(
max_tokens=50,
),
)
]
assert all(isinstance(chunk, CompletionResponseStreamChunk) for chunk in chunks)
assert len(chunks) >= 1
last = chunks[-1]
assert last.stop_reason == StopReason.out_of_tokens
@pytest.mark.parametrize(
"test_case",
[
"inference:completion:logprobs_non_streaming",
],
)
@pytest.mark.asyncio(loop_scope="session")
async def test_text_completion_logprobs_non_streaming(self, inference_model, inference_stack, test_case):
inference_impl, _ = inference_stack
tc = TestCase(test_case)
response = await inference_impl.completion(
content=tc["content"],
stream=False,
model_id=inference_model,
sampling_params=SamplingParams(
max_tokens=5,
),
logprobs=LogProbConfig(
top_k=3,
),
)
assert isinstance(response, CompletionResponse)
assert 1 <= len(response.logprobs) <= 5
assert response.logprobs, "Logprobs should not be empty"
assert all(len(logprob.logprobs_by_token) == 3 for logprob in response.logprobs)
@pytest.mark.parametrize(
"test_case",
[
"inference:completion:logprobs_streaming",
],
)
@pytest.mark.asyncio(loop_scope="session")
async def test_text_completion_logprobs_streaming(self, inference_model, inference_stack, test_case):
inference_impl, _ = inference_stack
tc = TestCase(test_case)
chunks = [
r
async for r in await inference_impl.completion(
content=tc["content"],
stream=True,
model_id=inference_model,
sampling_params=SamplingParams(
max_tokens=5,
),
logprobs=LogProbConfig(
top_k=3,
),
)
]
assert all(isinstance(chunk, CompletionResponseStreamChunk) for chunk in chunks)
assert (
1 <= len(chunks) <= 6
) # why 6 and not 5? the response may have an extra closing chunk, e.g. for usage or stop_reason
for chunk in chunks:
if chunk.delta: # if there's a token, we expect logprobs
assert chunk.logprobs, "Logprobs should not be empty"
assert all(len(logprob.logprobs_by_token) == 3 for logprob in chunk.logprobs)
else: # no token, no logprobs
assert not chunk.logprobs, "Logprobs should be empty"
@pytest.mark.parametrize(
"test_case",
[
"inference:completion:structured_output",
],
)
@pytest.mark.asyncio(loop_scope="session")
async def test_text_completion_structured_output(self, inference_model, inference_stack, test_case):
inference_impl, _ = inference_stack
class Output(BaseModel):
name: str
year_born: str
year_retired: str
tc = TestCase(test_case)
user_input = tc["user_input"]
response = await inference_impl.completion(
model_id=inference_model,
content=user_input,
stream=False,
sampling_params=SamplingParams(
max_tokens=50,
),
response_format=JsonSchemaResponseFormat(
json_schema=Output.model_json_schema(),
),
)
assert isinstance(response, CompletionResponse)
assert isinstance(response.content, str)
answer = Output.model_validate_json(response.content)
expected = tc["expected"]
assert answer.name == expected["name"]
assert answer.year_born == expected["year_born"]
assert answer.year_retired == expected["year_retired"]
@pytest.mark.parametrize(
"test_case",
[
"inference:chat_completion:sample_messages",
],
)
@pytest.mark.asyncio(loop_scope="session")
async def test_text_chat_completion_non_streaming(self, inference_model, inference_stack, common_params, test_case):
inference_impl, _ = inference_stack
tc = TestCase(test_case)
messages = [TypeAdapter(Message).validate_python(m) for m in tc["messages"]]
response = await inference_impl.chat_completion(
model_id=inference_model,
messages=messages,
stream=False,
**common_params,
)
assert isinstance(response, ChatCompletionResponse)
assert response.completion_message.role == "assistant"
assert isinstance(response.completion_message.content, str)
assert len(response.completion_message.content) > 0
@pytest.mark.parametrize(
"test_case",
[
"inference:chat_completion:structured_output",
],
)
@pytest.mark.asyncio(loop_scope="session")
async def test_text_chat_completion_structured_output(
self, inference_model, inference_stack, common_params, test_case
):
inference_impl, _ = inference_stack
class AnswerFormat(BaseModel):
first_name: str
last_name: str
year_of_birth: int
num_seasons_in_nba: int
tc = TestCase(test_case)
messages = [TypeAdapter(Message).validate_python(m) for m in tc["messages"]]
response = await inference_impl.chat_completion(
model_id=inference_model,
messages=messages,
stream=False,
response_format=JsonSchemaResponseFormat(
json_schema=AnswerFormat.model_json_schema(),
),
**common_params,
)
assert isinstance(response, ChatCompletionResponse)
assert response.completion_message.role == "assistant"
assert isinstance(response.completion_message.content, str)
answer = AnswerFormat.model_validate_json(response.completion_message.content)
expected = tc["expected"]
assert answer.first_name == expected["first_name"]
assert answer.last_name == expected["last_name"]
assert answer.year_of_birth == expected["year_of_birth"]
assert answer.num_seasons_in_nba == expected["num_seasons_in_nba"]
response = await inference_impl.chat_completion(
model_id=inference_model,
messages=[
SystemMessage(content="You are a helpful assistant."),
UserMessage(content="Please give me information about Michael Jordan."),
],
stream=False,
**common_params,
)
assert isinstance(response, ChatCompletionResponse)
assert isinstance(response.completion_message.content, str)
with pytest.raises(ValidationError):
AnswerFormat.model_validate_json(response.completion_message.content)
@pytest.mark.parametrize(
"test_case",
[
"inference:chat_completion:sample_messages",
],
)
@pytest.mark.asyncio(loop_scope="session")
async def test_text_chat_completion_streaming(self, inference_model, inference_stack, common_params, test_case):
inference_impl, _ = inference_stack
tc = TestCase(test_case)
messages = [TypeAdapter(Message).validate_python(m) for m in tc["messages"]]
response = [
r
async for r in await inference_impl.chat_completion(
model_id=inference_model,
messages=messages,
stream=True,
**common_params,
)
]
assert len(response) > 0
assert all(isinstance(chunk, ChatCompletionResponseStreamChunk) for chunk in response)
grouped = group_chunks(response)
assert len(grouped[ChatCompletionResponseEventType.start]) == 1
assert len(grouped[ChatCompletionResponseEventType.progress]) > 0
assert len(grouped[ChatCompletionResponseEventType.complete]) == 1
end = grouped[ChatCompletionResponseEventType.complete][0]
assert end.event.stop_reason == StopReason.end_of_turn
@pytest.mark.parametrize(
"test_case",
[
"inference:chat_completion:sample_messages_tool_calling",
],
)
@pytest.mark.asyncio(loop_scope="session")
async def test_text_chat_completion_with_tool_calling(
self,
inference_model,
inference_stack,
common_params,
test_case,
):
inference_impl, _ = inference_stack
tc = TestCase(test_case)
messages = [TypeAdapter(Message).validate_python(m) for m in tc["messages"]]
response = await inference_impl.chat_completion(
model_id=inference_model,
messages=messages,
tools=tc["tools"],
stream=False,
**common_params,
)
assert isinstance(response, ChatCompletionResponse)
message = response.completion_message
# This is not supported in most providers :/ they don't return eom_id / eot_id
# stop_reason = get_expected_stop_reason(inference_settings["common_params"]["model"])
# assert message.stop_reason == stop_reason
assert message.tool_calls is not None
assert len(message.tool_calls) > 0
call = message.tool_calls[0]
assert call.tool_name == tc["tools"][0]["tool_name"]
for name, value in tc["expected"].items():
assert name in call.arguments
assert value in call.arguments[name]
@pytest.mark.parametrize(
"test_case",
[
"inference:chat_completion:sample_messages_tool_calling",
],
)
@pytest.mark.asyncio(loop_scope="session")
async def test_text_chat_completion_with_tool_calling_streaming(
self,
inference_model,
inference_stack,
common_params,
test_case,
):
inference_impl, _ = inference_stack
tc = TestCase(test_case)
messages = [TypeAdapter(Message).validate_python(m) for m in tc["messages"]]
response = [
r
async for r in await inference_impl.chat_completion(
model_id=inference_model,
messages=messages,
tools=tc["tools"],
stream=True,
**common_params,
)
]
assert len(response) > 0
assert all(isinstance(chunk, ChatCompletionResponseStreamChunk) for chunk in response)
grouped = group_chunks(response)
assert len(grouped[ChatCompletionResponseEventType.start]) == 1
assert len(grouped[ChatCompletionResponseEventType.progress]) > 0
assert len(grouped[ChatCompletionResponseEventType.complete]) == 1
# This is not supported in most providers :/ they don't return eom_id / eot_id
# expected_stop_reason = get_expected_stop_reason(
# inference_settings["common_params"]["model"]
# )
# end = grouped[ChatCompletionResponseEventType.complete][0]
# assert end.event.stop_reason == expected_stop_reason
if "Llama3.1" in inference_model:
assert all(
chunk.event.delta.type == "tool_call" for chunk in grouped[ChatCompletionResponseEventType.progress]
)
first = grouped[ChatCompletionResponseEventType.progress][0]
if not isinstance(first.event.delta.tool_call, ToolCall): # first chunk may contain entire call
assert first.event.delta.parse_status == ToolCallParseStatus.started
last = grouped[ChatCompletionResponseEventType.progress][-1]
# assert last.event.stop_reason == expected_stop_reason
assert last.event.delta.parse_status == ToolCallParseStatus.succeeded
assert isinstance(last.event.delta.tool_call, ToolCall)
call = last.event.delta.tool_call
assert call.tool_name == tc["tools"][0]["tool_name"]
for name, value in tc["expected"].items():
assert name in call.arguments
assert value in call.arguments[name]
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