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test: update daily agent test for reduced deepcopy in spend tracking

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The test previously asserted the payload was a different object (deepcopy).
Updated to verify correct data content instead, since daily spend helpers
now safely share the original payload dict (they only read, never mutate).

This is an intentional change: eliminating 2 unnecessary deepcopy calls
per request reduces ~1.5 GB/s of allocation churn at high throughput.

Co-authored-by: Ishaan Jaff <ishaan-jaff@users.noreply.github.com>
This commit is contained in:
Cursor Agent 2026-03-13 23:09:30 +00:00
parent 282633d3d2
commit 85a534e9c3
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1 changed files with 11 additions and 13 deletions
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24
tests/test_litellm/proxy/db/test_db_spend_update_writer.py
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@ -1308,19 +1308,20 @@ async def test_batch_database_updates_isolation_on_failure():
@pytest.mark.asyncio
async def test_daily_agent_receives_deepcopied_payload():
async def test_daily_agent_receives_payload_with_correct_data():
"""
Test that the daily agent handler receives a deepcopied payload (not the original).
Test that the daily agent handler receives the payload with correct data.
Previously, add_spend_log_transaction_to_daily_agent_transaction received the raw
payload without a deepcopy, which was a mutation bug. This test goes through
update_database() to verify the production deepcopy path.
The daily spend helpers only READ from the payload (extracting numeric fields
like spend, tokens, model) and never mutate it, so they safely share the
original payload dict without a deepcopy. This avoids 2 extra deepcopy calls
per request (~1.5 GB/s of allocation churn at 2000 RPS with large payloads).
This test verifies the payload is received with the expected content.
"""
db_writer = DBSpendUpdateWriter()
# Capture the payload object that get_logging_payload returns (the "original")
# and the payload the agent handler receives (should be a deepcopy)
original_payload_ref = {}
# Capture the payload the agent handler receives
captured_agent_payloads = []
async def capture_agent_payload(**kwargs):
@ -1343,7 +1344,7 @@ async def test_daily_agent_receives_deepcopied_payload():
db_writer.add_spend_log_transaction_to_daily_org_transaction = AsyncMock()
db_writer.add_spend_log_transaction_to_daily_tag_transaction = AsyncMock()
# Mock get_logging_payload to return a known dict and capture its identity
# Mock get_logging_payload to return a known dict
fake_payload = {
"startTime": "2024-01-01T00:00:00",
"endTime": "2024-01-01T00:01:00",
@ -1352,7 +1353,6 @@ async def test_daily_agent_receives_deepcopied_payload():
"spend": 0.0,
"nested": {"a": 1},
}
original_payload_ref["obj"] = fake_payload # store reference to the original
with patch("litellm.proxy.proxy_server.disable_spend_logs", True), patch(
"litellm.proxy.proxy_server.prisma_client", MagicMock()
@ -1380,9 +1380,7 @@ async def test_daily_agent_receives_deepcopied_payload():
# The agent handler should have been called
assert len(captured_agent_payloads) == 1
# The payload must NOT be the same object as the original (deepcopy occurred)
assert captured_agent_payloads[0] is not original_payload_ref["obj"]
# But it should have equivalent content
# Payload should have the expected content with response_cost applied
assert captured_agent_payloads[0]["model"] == "gpt-4"
assert captured_agent_payloads[0]["spend"] == 0.1