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# BSD 3-Clause License; see https://github.com/scikit-hep/awkward/blob/main/LICENSE
from __future__ import annotations
import numpy as np
import pytest # noqa: F401
import awkward as ak
from awkward._nplikes.typetracer import TypeTracer
from awkward.typetracer import typetracer_with_report
typetracer = TypeTracer.instance()
def test_no_copy():
form = ak.forms.NumpyForm("int64", form_key="buffer")
layout, report = typetracer_with_report(form)
typetracer.asarray(layout.data)
assert not report.data_touched
def test_no_copy_dtype():
form = ak.forms.NumpyForm("int64", form_key="buffer")
layout, report = typetracer_with_report(form)
typetracer.asarray(layout.data, dtype=np.int64)
assert not report.data_touched
def test_copy_touch():
form = ak.forms.NumpyForm("int64", form_key="buffer")
layout, report = typetracer_with_report(form)
typetracer.asarray(layout.data, dtype=np.int32)
assert report.data_touched == ["buffer"]
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