testing hamming kernel

tests/bofire/kernels/test_categorical.py

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+import torch
+from botorch.models.kernels.categorical import CategoricalKernel
+from botorch.models.transforms.input import OneHotToNumeric
+
+from bofire.kernels.categorical import HammingKernelWithOneHots
+
+
+def test_hamming_with_one_hot():
+    k1 = CategoricalKernel()
+    k2 = HammingKernelWithOneHots()
+
+    xin_oh = torch.eye(3)
+    xin_cat = OneHotToNumeric(3, categorical_features={0: 3}).transform(xin_oh)
+
+    z1 = k1(xin_cat).to_dense()
+    z2 = k2(xin_oh).to_dense()
+
+    assert torch.allclose(z1, z2)