code: def test_hover_text_atomic(self):
      options = self._add_default_options(hover_text="test-text")
      markers = marker_layer(self.locations, **options)
      for marker in markers.markers:
          assert marker.hover_text == "test-text"
  
imports: import unittest
  import pytest
  import numpy
  import traitlets
  from ..marker import MarkerOptions, Marker, Markers, Symbol, marker_layer, symbol_layer
label_desc: Use image node_id 4 for calling the MarkerLayer obj's underlying member method code with example usage: obj.test_hover_text_atomic() without return types