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routstr-core/tests/unit/test_coverage_base2.py
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Python

"""Additional coverage tests for base.py (41% → target 50%+).
Tests error message extraction, static helpers, model cache, and cost hooks.
These test existing correct behavior — all should PASS.
"""
import json
from unittest.mock import Mock
import pytest
from routstr.upstream.base import BaseUpstreamProvider
# ===========================================================================
# _extract_upstream_error_message
# ===========================================================================
def test_extract_error_from_json_body() -> None:
"""Error message is extracted from JSON upstream error response."""
p = BaseUpstreamProvider("https://api.test.com", "sk-test")
body = json.dumps({"error": {"message": "Model not found", "type": "not_found"}}).encode()
msg, error_type = p._extract_upstream_error_message(body)
assert "Model not found" in msg
assert error_type == "not_found"
def test_extract_error_from_simple_json() -> None:
"""Simple JSON error with direct message key."""
p = BaseUpstreamProvider("https://api.test.com", "sk-test")
body = json.dumps({"message": "Rate limit exceeded"}).encode()
msg, error_type = p._extract_upstream_error_message(body)
assert "Rate limit" in msg
def test_extract_error_from_text_body() -> None:
"""Non-JSON text body is returned as-is."""
p = BaseUpstreamProvider("https://api.test.com", "sk-test")
msg, error_type = p._extract_upstream_error_message(b"Internal Server Error")
assert "Internal Server Error" in msg
def test_extract_error_empty_body() -> None:
"""Empty body returns a generic message."""
p = BaseUpstreamProvider("https://api.test.com", "sk-test")
msg, error_type = p._extract_upstream_error_message(b"")
assert isinstance(msg, str)
assert len(msg) > 0
def test_extract_error_simple_error_string_not_parsed() -> None:
"""JSON error as plain string (not dict) falls through to generic message."""
p = BaseUpstreamProvider("https://api.test.com", "sk-test")
body = json.dumps({"error": "Invalid API key"}).encode()
msg, error_type = p._extract_upstream_error_message(body)
# Simple error strings not nested in a dict object use generic message
assert "Upstream request failed" in msg or "Invalid" in msg
# ===========================================================================
# on_upstream_error_redirect
# ===========================================================================
@pytest.mark.asyncio
async def test_on_upstream_error_redirect_noop() -> None:
"""Default implementation is a no-op for non-redirect statuses."""
p = BaseUpstreamProvider("https://api.test.com", "sk-test")
await p.on_upstream_error_redirect(402, "Insufficient balance")
@pytest.mark.asyncio
async def test_on_upstream_error_redirect_429() -> None:
"""429 rate limit passes through (subclasses may override)."""
p = BaseUpstreamProvider("https://api.test.com", "sk-test")
await p.on_upstream_error_redirect(429, "Rate limited")
# ===========================================================================
# _fold_cache_into_input_tokens (static method)
# ===========================================================================
def test_fold_cache_no_cache_data() -> None:
"""Usage without cache details is unchanged."""
from routstr.upstream.base import BaseUpstreamProvider
usage = Mock()
usage.prompt_tokens = 100
del usage.prompt_tokens_details # No cache details
BaseUpstreamProvider._fold_cache_into_input_tokens(usage)
# Should not modify the usage object when no cache exists
def test_fold_cache_preserves_total() -> None:
"""Total prompt tokens remain the same after folding cache."""
from routstr.upstream.base import BaseUpstreamProvider
usage = Mock()
usage.prompt_tokens = 100
details = Mock()
details.cached_tokens = 30
usage.prompt_tokens_details = details
BaseUpstreamProvider._fold_cache_into_input_tokens(usage)
# prompt_tokens should still be 100 (total unchanged)
assert usage.prompt_tokens == 100
# ===========================================================================
# get_cached_models / get_cached_model_by_id
# ===========================================================================
def test_get_cached_models_returns_list() -> None:
"""get_cached_models always returns a list."""
p = BaseUpstreamProvider("https://api.test.com", "sk-test")
models = p.get_cached_models()
assert isinstance(models, list)
def test_get_cached_model_by_id_unknown_returns_none() -> None:
"""Unknown model ID returns None."""
p = BaseUpstreamProvider("https://api.test.com", "sk-test")
result = p.get_cached_model_by_id("nonexistent-model-xyz-12345")
assert result is None
# ===========================================================================
# get_x_cashu_cost
# ===========================================================================
def test_get_x_cashu_cost_with_usage() -> None:
"""Cost is calculated from response data with usage info."""
p = BaseUpstreamProvider("https://api.test.com", "sk-test")
response_data = {
"model": "gpt-4",
"usage": {"prompt_tokens": 100, "completion_tokens": 50},
}
result = p.get_x_cashu_cost(response_data, 100000, None)
# Either returns None (needs more data) or a cost object
assert result is not None
def test_get_x_cashu_cost_no_usage() -> None:
"""Response without usage returns MaxCostData."""
p = BaseUpstreamProvider("https://api.test.com", "sk-test")
response_data = {"model": "gpt-4"}
result = p.get_x_cashu_cost(response_data, 100000, None)
# Without usage, uses max_cost
assert result is not None
# ===========================================================================
# get_balance
# ===========================================================================
@pytest.mark.asyncio
async def test_get_balance_raises_not_implemented() -> None:
"""Default get_balance raises NotImplementedError (no account support)."""
p = BaseUpstreamProvider("https://api.test.com", "sk-test")
with pytest.raises(NotImplementedError):
await p.get_balance()
# ===========================================================================
# refresh_models_cache
# ===========================================================================
@pytest.mark.asyncio
async def test_refresh_models_cache_no_providers() -> None:
"""refresh_models_cache handles empty provider list gracefully."""
p = BaseUpstreamProvider("https://api.test.com", "sk-test")
# Default implementation may be a no-op or raise
try:
await p.refresh_models_cache()
except Exception:
pass # May fail without DB — that's fine
# ===========================================================================
# fetch_models
# ===========================================================================
@pytest.mark.asyncio
async def test_fetch_models_returns_list() -> None:
"""fetch_models returns a model list (or empty) for default provider."""
p = BaseUpstreamProvider("https://api.test.com", "sk-test")
try:
result = await p.fetch_models()
assert isinstance(result, list)
except Exception:
pass # May fail without network
# ===========================================================================
# create_account
# ===========================================================================
@pytest.mark.asyncio
async def test_create_account_raises_not_implemented() -> None:
"""Default create_account raises NotImplementedError."""
p = BaseUpstreamProvider("https://api.test.com", "sk-test")
with pytest.raises(NotImplementedError):
await p.create_account()