code: def test_invalid_location(self):
      with self.assertRaises(InvalidPointException):
          heatmap_layer([(1.0, -200.0)])
  
imports: import unittest
  import pytest
  import traitlets
  from ..heatmap import _HeatmapOptionsMixin, heatmap_layer, Heatmap, WeightedHeatmap
  from ..geotraitlets import InvalidPointException, InvalidWeightException
label_desc: Use image node_id 13 for calling the HeatmapLayer obj's underlying member method code with example usage: obj.test_invalid_location() without return types