code: def test_lmplot_facet_truncate(self, sharex):
      g = lm.lmplot(
          data=self.df,
          x="x",
          y="y",
          hue="g",
          col="h",
          truncate=False,
          facet_kws=dict(sharex=sharex),
      )
  
      for ax in g.axes.flat:
          for line in ax.lines:
              xdata = line.get_xdata()
              assert ax.get_xlim() == tuple(xdata[[0, -1]])
  
imports: import warnings
  import numpy
  import matplotlib
  import matplotlib.pyplot
  import pandas
  import pytest
  import numpy.testing
  import pandas.testing
  from seaborn import regression
  from seaborn.palettes import color_palette
label_desc: Use image node_id 13 for calling the TestRegressionPlots obj's underlying member method code with example usage: obj.test_lmplot_facet_truncate(sharex) without return types