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Fix GetBuffer throwing ArgumentOutOfRangeException #2120

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Merged
merged 3 commits into from
Mar 12, 2023
Merged

Fix GetBuffer throwing ArgumentOutOfRangeException #2120

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1560611
test: add PyBuffer test for strides
legomanww Mar 11, 2023
796f363
fix: incorrect length for buffer copy
legomanww Mar 11, 2023
856b5f8
docs: update `CHANGELOG` and `AUTHORS`
legomanww Mar 11, 2023
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test: add PyBuffer test for strides
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@legomanww
legomanww committed Mar 11, 2023
commit 15606111d46d61343ca201bb03bdd8223e973142
36 changes: 36 additions & 0 deletions src/embed_tests/TestPyBuffer.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -110,6 +110,26 @@ public void Finalization()
Assert.AreEqual(1, arr.Refcount);
}

[Test]
public void MultidimensionalNumPyArray()
{
var ndarray = np.arange(24).reshape(1,2,3,4).T;
PyObject ndim = ndarray.ndim;
PyObject shape = ndarray.shape;
PyObject strides = ndarray.strides;
PyObject contiguous = ndarray.flags["C_CONTIGUOUS"];

using PyBuffer buf = ndarray.GetBuffer(PyBUF.STRIDED);

Assert.Multiple(() =>
{
Assert.That(buf.Dimensions, Is.EqualTo(ndim.As<int>()));
Assert.That(buf.Shape, Is.EqualTo(shape.As<long[]>()));
Assert.That(buf.Strides, Is.EqualTo(strides.As<long[]>()));
Assert.That(buf.IsContiguous(BufferOrderStyle.C), Is.EqualTo(contiguous.As<bool>()));
});
}

[MethodImpl(MethodImplOptions.NoInlining)]
static void MakeBufAndLeak(PyObject bufProvider)
{
Expand All @@ -121,5 +141,21 @@ static PyObject ByteArrayFromAsciiString(string str)
using var scope = Py.CreateScope();
return Runtime.Runtime.PyByteArray_FromStringAndSize(str).MoveToPyObject();
}

dynamic np
{
get
{
try
{
return Py.Import("numpy");
}
catch (PythonException)
{
Assert.Inconclusive("Numpy or dependency not installed");
return null;
}
}
}
}
}