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29 lines
961 B
Python
29 lines
961 B
Python
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"""The in-process sampler leaves a readable profile behind, including for a process killed mid-run."""
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import time
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from openultrasast import profiling
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def _busy_quadratic(n: int) -> int:
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seen: list[int] = []
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for i in range(n):
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if i not in seen:
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seen.append(i)
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return len(seen)
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def test_the_sampler_names_the_function_that_holds_the_time(tmp_path, monkeypatch):
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target = tmp_path / "profile.txt"
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monkeypatch.delenv(profiling.ENV, raising=False)
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assert profiling.start() is None # off unless asked for
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assert profiling.start(str(target), interval=0.002, flush=0.2) is not None
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deadline = time.monotonic() + 1.5
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while time.monotonic() < deadline:
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_busy_quadratic(3000)
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time.sleep(0.3)
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text = target.read_text()
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assert text.startswith("samples ")
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self_section = text.split("self (executing):")[1]
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assert "_busy_quadratic" in self_section.splitlines()[1], self_section[:300]
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