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"""Tests for llm capability detection and feature fallbacks."""
from __future__ import annotations
import base64
import pytest
from ollama import Message
from ollama._types import Image as OllamaImage
from ollama._types import ResponseError
from ollama_web.llm import (
_embed_images_in_content,
_is_image_message,
chat_with_tools,
stream_chat_with_tools,
)
from ollama_web.tools.registry import ToolRegistry
def _image_message() -> Message:
return Message(
role="user",
content="hello",
images=[OllamaImage(value=b"fake-image-bytes")],
)
def test_is_image_message_detects_images() -> None:
assert _is_image_message(_image_message()) is True
def test_is_image_message_without_images() -> None:
assert _is_image_message(Message(role="user", content="hello")) is False
def test_embed_images_in_content_adds_base64_markdown() -> None:
embedded = _embed_images_in_content(_image_message())
encoded = base64.b64encode(b"fake-image-bytes").decode("ascii")
assert f"" in embedded.content
assert not getattr(embedded, "images", None)
def test_chat_with_tools_skips_tools_for_non_tool_model() -> None:
"""Tools are not passed when the model does not advertise tool support."""
messages = [Message(role="user", content="hi")]
# Use an empty registry so any tool call would fail if requested.
registry = ToolRegistry()
# Without tool capability, the iterator should finish immediately with no
# actual network request. We only verify it accepts the call and does not
# raise due to tool-related setup.
gen = chat_with_tools(
messages,
model="nonexistent-model",
capabilities=set(),
registry=registry,
)
events = list(gen)
# We expect either an error (model not found) or a done event.
assert any(e.get("type") in {"error", "done"} for e in events)
def test_chat_with_tools_forces_think_none_for_non_thinking_model() -> None:
messages = [Message(role="user", content="hi")]
gen = chat_with_tools(
messages,
model="nonexistent-model",
capabilities=set(),
)
events = list(gen)
assert any(e.get("type") in {"error", "done"} for e in events)
def test_stream_chat_with_tools_accepts_capability_set() -> None:
messages = [Message(role="user", content="hi")]
gen = stream_chat_with_tools(
messages,
model="nonexistent-model",
capabilities={"tools", "thinking"},
)
with pytest.raises(ResponseError):
list(gen)
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