lldb/packages/Python/lldbsuite/test/functionalities/recursion/TestValueObjectRecursion.py

   1 """
   2 Test lldb data formatter subsystem.
   3 """
   4
   5 from __future__ import print_function
   6
   7
   8 import lldb
   9 from lldbsuite.test.lldbtest import *
  10 import lldbsuite.test.lldbutil as lldbutil
  11
  12
  13 class ValueObjectRecursionTestCase(TestBase):
  14
  15     mydir = TestBase.compute_mydir(__file__)
  16
  17     def setUp(self):
  18         # Call super's setUp().
  19         TestBase.setUp(self)
  20         # Find the line number to break at.
  21         self.line = line_number('main.cpp', '// Set break point at this line.')
  22
  23     def test_with_run_command(self):
  24         """Test that deeply nested ValueObjects still work."""
  25         self.build()
  26         self.runCmd("file " + self.getBuildArtifact("a.out"), CURRENT_EXECUTABLE_SET)
  27
  28         lldbutil.run_break_set_by_file_and_line(
  29             self, "main.cpp", self.line, num_expected_locations=1, loc_exact=True)
  30
  31         self.runCmd("run", RUN_SUCCEEDED)
  32
  33         # The stop reason of the thread should be breakpoint.
  34         self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
  35                     substrs=['stopped',
  36                              'stop reason = breakpoint'])
  37
  38         # This is the function to remove the custom formats in order to have a
  39         # clean slate for the next test case.
  40         def cleanup():
  41             self.runCmd('type format clear', check=False)
  42             self.runCmd('type summary clear', check=False)
  43
  44         # Execute the cleanup function during test case tear down.
  45         self.addTearDownHook(cleanup)
  46
  47         root = self.frame().FindVariable("root")
  48         child = root.GetChildAtIndex(1)
  49         if self.TraceOn():
  50             print(root)
  51             print(child)
  52         for i in range(0, 15000):
  53             child = child.GetChildAtIndex(1)
  54         if self.TraceOn():
  55             print(child)
  56         self.assertTrue(
  57             child.IsValid(),
  58             "could not retrieve the deep ValueObject")
  59         self.assertTrue(
  60             child.GetChildAtIndex(0).IsValid(),
  61             "the deep ValueObject has no value")
  62         self.assertTrue(
  63             child.GetChildAtIndex(0).GetValueAsUnsigned() != 0,
  64             "the deep ValueObject has a zero value")
  65         self.assertTrue(
  66             child.GetChildAtIndex(1).GetValueAsUnsigned() != 0,
  67             "the deep ValueObject has no next")