func newFloatVolume(t *testing.T, offset, size dvid.Point3d) *testVolume {
var buf bytes.Buffer
for i := int64(0); i < size.Prod(); i++ {
if err := binary.Write(&buf, binary.LittleEndian, float32(i)); err != nil {
t.Fatalf("couldn't write to float volume: %v\n", err)
}
}
return &testVolume{
data: buf.Bytes(),
offset: offset,
size: size,
}
}
