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Add regression test for length-1 tensor int casts #2662

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19 changes: 19 additions & 0 deletions coremltools/converters/mil/frontend/torch/test/test_torch_ops.py
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Original file line number Diff line number Diff line change
Expand Up @@ -7277,6 +7277,25 @@ def forward(self, spans, embedding):
compute_unit=compute_unit,
)

def test_cast_length_1_constant_tensor(self):
class TestModel(torch.nn.Module):
def forward(self, x):
b, c, h, w = x.shape
return x.reshape(b, c, int(h * w))

x = torch.rand(1, 2, 4, 4)
torch_model = export_torch_model_to_frontend(
TestModel().eval(),
(x,),
TorchFrontend.TORCHSCRIPT,
)
ct.convert(
torch_model,
inputs=[ct.TensorType(shape=x.shape)],
convert_to="neuralnetwork",
minimum_deployment_target=ct.target.iOS14,
)

@pytest.mark.parametrize(
"compute_unit, backend, frontend",
itertools.product(compute_units, backends, frontends),
Expand Down