code: def test_dimension_init(self):
      Dimension("Test dimension")
      Dimension("Test dimension", cyclic=True)
      Dimension("Test dimension", cyclic=True, type=int)
      Dimension(
          "Test dimension", cyclic=True, type=int, unit="Twilight zones"
      )
  
imports: import numpy
  from holoviews import Dataset, HoloMap
  from holoviews.core import Dimension
  from holoviews.core.ndmapping import MultiDimensionalMapping, NdMapping, UniformNdMapping
  from holoviews.core.overlay import Overlay
  from holoviews.element import Curve
  from holoviews.element.comparison import ComparisonTestCase
label_desc: Use image node_id 1 for calling the DimensionTest obj's underlying member method code with example usage: obj.test_dimension_init() without return types