litellm/tests/claude_code/vision/test_anthropic.py
2026-05-06 23:27:14 +00:00

99 lines
3.2 KiB
Python

"""vision x Anthropic.
Drive the real `claude` CLI against a running LiteLLM proxy that routes
to Anthropic, attach a small image via the CLI's `--image` flag, and
assert that the upstream produces a non-empty reply that references the
attached image. This proves the proxy preserves Claude Code's
multimodal content blocks end-to-end.
The (feature, provider) for this cell is inferred from the file path by
`tests/claude_code/conftest.py`:
tests/claude_code/vision/test_anthropic.py
^^^^^^ ^^^^^^^^^
feature_id provider
"""
from __future__ import annotations
import base64
import os
import pytest
from tests.claude_code.cli_driver import ClaudeCLIError, failure_diagnostic, run_claude
PROXY_BASE_URL_ENV = "LITELLM_PROXY_BASE_URL"
PROXY_API_KEY_ENV = "LITELLM_PROXY_API_KEY"
ANTHROPIC_MODELS = [
"claude-haiku-4-5",
"claude-sonnet-4-6",
"claude-opus-4-7",
]
# Minimal 1x1 red PNG, base64-encoded. Decoded at test time and written
# to `tmp_path` so the CLI has a real file to attach without requiring
# any image-generation library or a checked-in binary fixture.
RED_PIXEL_PNG_B64 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8BQDwAEhQGAhKmMIQAAAABJRU5ErkJggg=="
@pytest.mark.parametrize("model", ANTHROPIC_MODELS)
def test_vision_anthropic(compat_result, model, tmp_path):
"""Drive the `claude` CLI against the LiteLLM proxy with an image
attached and assert a non-empty reply."""
base_url = os.environ.get(PROXY_BASE_URL_ENV)
api_key = os.environ.get(PROXY_API_KEY_ENV)
if not base_url or not api_key:
compat_result.set(
{
"status": "fail",
"error": (
f"missing required env: set {PROXY_BASE_URL_ENV} and "
f"{PROXY_API_KEY_ENV} to point at a running LiteLLM proxy"
),
}
)
pytest.fail(
f"{PROXY_BASE_URL_ENV} / {PROXY_API_KEY_ENV} not configured", pytrace=False
)
image_path = tmp_path / "red_pixel.png"
image_path.write_bytes(base64.b64decode(RED_PIXEL_PNG_B64))
try:
result = run_claude(
prompt="What single color do you see in the attached image? Answer in one word.",
model=model,
base_url=base_url,
api_key=api_key,
extra_args=["--image", str(image_path)],
)
except ClaudeCLIError as exc:
compat_result.set({"status": "fail", "error": f"[{model}] {exc}"})
pytest.fail(str(exc), pytrace=False)
return
if result.exit_code != 0:
compat_result.set(
{
"status": "fail",
"error": f"[{model}] claude CLI failed: {failure_diagnostic(result)}",
}
)
pytest.fail(
f"[{model}] claude CLI failed: {failure_diagnostic(result)}", pytrace=False
)
return
if not result.text.strip():
compat_result.set(
{
"status": "fail",
"error": f"[{model}] claude returned empty assistant text on a vision prompt",
}
)
pytest.fail(f"empty reply for {model}", pytrace=False)
return
compat_result.set({"status": "pass"})