code: def test_plot_markers_node_values(node_values, coords):
      """Smoke test for plot_markers with different node values."""
      plot_markers(node_values, coords, display_mode="x")
      plt.close()
  
imports: import os
  import matplotlib.pyplot
  import numpy
  import pytest
  from nilearn.conftest import _rng
  from nilearn.plotting import plot_markers
label_desc: Use image node_id 2 for calling a global function with example usage: test_plot_markers_node_values(node_values, coords) without return types