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import torch
from torch_geometric.data import Data
from torch_geometric.transforms import RandomShear
def test_random_shear():
assert str(RandomShear(0.1)) == 'RandomShear(0.1)'
pos = torch.tensor([[-1.0, -1.0], [-1.0, 1.0], [1.0, -1.0], [1.0, 1.0]])
data = Data(pos=pos)
data = RandomShear(0)(data)
assert len(data) == 1
assert torch.allclose(data.pos, pos)
data = Data(pos=pos)
data = RandomShear(0.1)(data)
assert len(data) == 1
assert not torch.allclose(data.pos, pos)
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