text: from luaparser.utils import tests
  from luaparser import ast
  from luaparser.astnodes import *
  
  
  class VariablesTestCase(tests.TestCase):
      def test_global_var(self):
          tree = ast.parse("foo = 42")
          exp = Chunk(Block([Assign(targets=[Name("foo")], values=[Number(n=42)])]))
          self.assertEqual(exp, tree)
  
      def test_local_var(self):
          tree = ast.parse("local foo = 42")
          exp = Chunk(Block([LocalAssign(targets=[Name("foo")], values=[Number(n=42)])]))
          self.assertEqual(exp, tree)
  
      def test_empty_local_var(self):
          tree = ast.parse("local foo, bar")
          exp = Chunk(Block([LocalAssign(targets=[Name("foo"), Name("bar")], values=[])]))
          self.assertEqual(exp, tree)
  
      def test_multi_var(self):
          tree = ast.parse("a,b,c = 1,2")
          exp = Chunk(
              Block(
                  [
                      Assign(
                          targets=[Name("a"), Name("b"), Name("c")],
                          values=[Number(n=1), Number(n=2)],
                      )
                  ]
              )
          )
          self.assertEqual(exp, tree)
  
      def test_local_multi_var(self):
          tree = ast.parse("local foo, bar = 42")
          exp = Chunk(
              Block(
                  [LocalAssign(targets=[Name("foo"), Name("bar")], values=[Number(n=42)])]
              )
          )
          self.assertEqual(exp, tree)
  