code: def test_scatter_markers(self):
      scatter = Tiles("") * Scatter(
          [(0, 1, "square"), (1, 2, "circle"), (2, 3, "triangle-up")],
          vdims=["y", "marker"],
      ).opts(marker="marker")
      state = self._get_plot_state(scatter)
      self.assertEqual(
          np.array_equal(
              state["data"][1]["marker"]["symbol"],
              np.array(["square", "circle", "triangle-up"]),
          ),
          True,
      )
  
imports: import numpy
  from holoviews.element import Scatter, Tiles
  from .test_plot import TestPlotlyPlot
label_desc: Use image node_id 5 for calling the TestMapboxScatterPlot obj's underlying member method code with example usage: obj.test_scatter_markers() without return types