chore: import upstream snapshot with attribution

tests/python/mxnet/test_geometry.py

@@ -0,0 +1,25 @@
+import backend as F
+import mxnet as mx
+import numpy as np
+
+from dgl.geometry import farthest_point_sampler
+
+
+def test_fps():
+    N = 1000
+    batch_size = 5
+    sample_points = 10
+    x = mx.nd.array(
+        np.random.uniform(size=(batch_size, int(N / batch_size), 3))
+    )
+    ctx = F.ctx()
+    if F.gpu_ctx():
+        x = x.as_in_context(ctx)
+    res = farthest_point_sampler(x, sample_points)
+    assert res.shape[0] == batch_size
+    assert res.shape[1] == sample_points
+    assert res.sum() > 0
+
+
+if __name__ == "__main__":
+    test_fps()