129 lines
4.3 KiB
Python
129 lines
4.3 KiB
Python
"""Unit test for benchmark/hicache/bench_long_context.py.
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Guards against the regression where ContextWorkloadGenerator.__init__ replaces
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WorkloadGenerator.__init__ entirely but forgets to set attributes the inherited
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request_sender/handle_request methods need (e.g. self.request_func).
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"""
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import json
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import sys
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import tempfile
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import unittest
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from pathlib import Path
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from types import SimpleNamespace
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from unittest.mock import MagicMock, patch
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from sglang.test.ci.ci_register import register_cpu_ci
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from sglang.test.test_utils import CustomTestCase
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register_cpu_ci(est_time=5, suite="base-a-test-cpu")
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REPO_ROOT = Path(__file__).resolve().parents[3]
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HICACHE_DIR = REPO_ROOT / "benchmark" / "hicache"
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if str(HICACHE_DIR) not in sys.path:
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sys.path.insert(0, str(HICACHE_DIR))
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import bench_long_context # noqa: E402
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from sglang.test.kits.cache_hit_kit import async_request_sglang_generate # noqa: E402
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def _build_args(dataset_path: str) -> SimpleNamespace:
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return SimpleNamespace(
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host="localhost",
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port=30000,
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model_path="meta-llama/Llama-3.2-1B-Instruct",
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distribution="poisson",
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request_rate=1.0,
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dataset_path=dataset_path,
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num_clients=2,
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max_parallel=2,
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log_file="performance_metrics.jsonl",
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tag="",
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)
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def _fake_dataset() -> dict:
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return {
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"contexts": ["ctx-zero ", "ctx-one "],
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"queries": [
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{"context": 0, "question": "q0", "reference_answer": "a0"},
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{"context": 1, "question": "q1", "reference_answer": "a1"},
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],
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}
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class TestContextWorkloadGeneratorInit(CustomTestCase):
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"""Verify ContextWorkloadGenerator wires up everything its inherited
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request_sender/handle_request/run methods rely on."""
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def setUp(self):
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self._tmp = tempfile.NamedTemporaryFile(mode="w", suffix=".json", delete=False)
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json.dump(_fake_dataset(), self._tmp)
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self._tmp.close()
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self.dataset_path = self._tmp.name
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mock_tokenizer = MagicMock()
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mock_tokenizer.encode.return_value = [1, 2, 3, 4]
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mock_tokenizer.return_value = {"input_ids": [5, 6]}
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self._tok_patch = patch.object(
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bench_long_context, "get_tokenizer", return_value=mock_tokenizer
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)
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self._tok_patch.start()
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def tearDown(self):
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self._tok_patch.stop()
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Path(self.dataset_path).unlink(missing_ok=True)
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def test_request_func_is_set(self):
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"""The bug we're guarding against: request_func not being set caused
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AttributeError as soon as the request_sender thread fired."""
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gen = bench_long_context.ContextWorkloadGenerator(
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_build_args(self.dataset_path)
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)
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self.assertTrue(callable(getattr(gen, "request_func", None)))
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self.assertIs(gen.request_func, async_request_sglang_generate)
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def test_inherits_workload_generator_contract(self):
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"""All attributes WorkloadGenerator's run-time methods touch must exist."""
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gen = bench_long_context.ContextWorkloadGenerator(
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_build_args(self.dataset_path)
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)
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# handle_request (bench_multiturn.py) reads these
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for attr in ("request_func", "url", "pbar", "response_queue", "finished_time"):
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self.assertTrue(hasattr(gen, attr), f"missing attribute: {attr}")
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# request_sender reads these
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for attr in (
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"sent_requests",
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"completed_requests",
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"max_parallel",
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"ready_queue",
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"distribution",
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"request_rate",
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):
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self.assertTrue(hasattr(gen, attr), f"missing attribute: {attr}")
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# run() reads these
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for attr in ("performance_metrics", "enable_round_barrier"):
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self.assertTrue(hasattr(gen, attr), f"missing attribute: {attr}")
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def test_url_targets_sglang_generate_endpoint(self):
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gen = bench_long_context.ContextWorkloadGenerator(
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_build_args(self.dataset_path)
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)
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self.assertEqual(gen.url, "http://localhost:30000/generate")
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def test_ready_queue_size_matches_dataset(self):
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gen = bench_long_context.ContextWorkloadGenerator(
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_build_args(self.dataset_path)
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)
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# 2 queries in fake dataset, num_clients=2 → 2 init requests
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self.assertEqual(len(gen.ready_queue.requests), 2)
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if __name__ == "__main__":
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unittest.main()
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