code: def test_scatter_common_columns():
      df = pd.DataFrame({"x": [1, 4, 2, 3, 5], "y": [6, 3, 4, 5, 2]})
  
      plot = df.vgplot.scatter(x="x", y="y", c="y")
      utils.validate_vegalite(plot)
      assert plot.mark == "point"
      utils.check_encodings(plot, x="x", y="y", color="y")
  
imports: import pytest
  import pandas
  import altair
  from pdvega.tests import utils
label_desc: Use image node_id 6 for calling a global function with example usage: test_scatter_common_columns() without return types