code: def test_stroke_color_atomic_tuple(self):
      color = (10, 10, 10, 0.5)
      options = self._add_default_options(stroke_color=color)
      symbols = symbol_layer(self.locations, **options)
      for symbol in symbols.markers:
          assert symbol.stroke_color == "rgba(10,10,10,0.5)"
  
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 7 for calling the SymbolLayer obj's underlying member method code with example usage: obj.test_stroke_color_atomic_tuple() without return types