docstr: Test that the n (number of lines) works as expected.
code: def test_lorem_ipsum_n(self):
      """Test that the n (number of lines) works as expected."""
      assert generate_lorem_ipsum(n=0, html=False) == ""
      for n in range_type(1, 50):
          assert (
              generate_lorem_ipsum(n=n, html=False).count("\n")
              == (n - 1) * 2
          )
  
imports: import pickle
  import random
  from collections import deque
  from copy import copy
  import pytest
  from markupsafe import Markup
  from jinja2._compat import range_type
  from jinja2._compat import string_types
  from jinja2.utils import consume
  from jinja2.utils import generate_lorem_ipsum
  from jinja2.utils import LRUCache
  from jinja2.utils import missing
  from jinja2.utils import object_type_repr
  from jinja2.utils import select_autoescape
  from jinja2.utils import urlize
label_desc: Use image node_id 3 for calling the TestLoremIpsum obj's underlying member method code with example usage: obj.test_lorem_ipsum_n() without return types