text: """
  Test lldb data formatter subsystem.
  """
  
  from __future__ import print_function
  
  
  import os
  import time
  import lldb
  from lldbsuite.test.lldbtest import *
  import lldbsuite.test.lldbutil as lldbutil
  
  
  class ValueObjectRecursionTestCase(TestBase):
  
      mydir = TestBase.compute_mydir(__file__)
  
      def setUp(self):
          # Call super's setUp().
          TestBase.setUp(self)
          # Find the line number to break at.
          self.line = line_number('main.cpp', '// Set break point at this line.')
  
      def test_with_run_command(self):
          """Test that deeply nested ValueObjects still work."""
          self.build()
          self.runCmd("file " + self.getBuildArtifact("a.out"), CURRENT_EXECUTABLE_SET)
  
          lldbutil.run_break_set_by_file_and_line(
              self, "main.cpp", self.line, num_expected_locations=1, loc_exact=True)
  
          self.runCmd("run", RUN_SUCCEEDED)
  
          # The stop reason of the thread should be breakpoint.
          self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
                      substrs=['stopped',
                               'stop reason = breakpoint'])
  
          # This is the function to remove the custom formats in order to have a
          # clean slate for the next test case.
          def cleanup():
              self.runCmd('type format clear', check=False)
              self.runCmd('type summary clear', check=False)
  
          # Execute the cleanup function during test case tear down.
          self.addTearDownHook(cleanup)
  
          root = self.frame().FindVariable("root")
          child = root.GetChildAtIndex(1)
          if self.TraceOn():
              print(root)
              print(child)
          for i in range(0, 15000):
              child = child.GetChildAtIndex(1)
          if self.TraceOn():
              print(child)
          self.assertTrue(
              child.IsValid(),
              "could not retrieve the deep ValueObject")
          self.assertTrue(
              child.GetChildAtIndex(0).IsValid(),
              "the deep ValueObject has no value")
          self.assertTrue(
              child.GetChildAtIndex(0).GetValueAsUnsigned() != 0,
              "the deep ValueObject has a zero value")
          self.assertTrue(
              child.GetChildAtIndex(1).GetValueAsUnsigned() != 0,
              "the deep ValueObject has no next")
  