lldb/test/API/functionalities/recursion/TestValueObjectRecursion.py

   1 """
   2 Test lldb data formatter subsystem.
   3 """
   4
   5 import lldb
   6 from lldbsuite.test.decorators import *
   7 from lldbsuite.test.lldbtest import *
   8 import lldbsuite.test.lldbutil as lldbutil
   9
  10
  11 class ValueObjectRecursionTestCase(TestBase):
  12     def setUp(self):
  13         # Call super's setUp().
  14         TestBase.setUp(self)
  15         # Find the line number to break at.
  16         self.line = line_number("main.cpp", "// Set break point at this line.")
  17
  18     @no_debug_info_test
  19     def test_with_run_command(self):
  20         """Test that deeply nested ValueObjects still work."""
  21         self.build()
  22         self.runCmd("file " + self.getBuildArtifact("a.out"), CURRENT_EXECUTABLE_SET)
  23
  24         lldbutil.run_break_set_by_file_and_line(
  25             self, "main.cpp", self.line, num_expected_locations=1, loc_exact=True
  26         )
  27
  28         self.runCmd("run", RUN_SUCCEEDED)
  29
  30         # The stop reason of the thread should be breakpoint.
  31         self.expect(
  32             "thread list",
  33             STOPPED_DUE_TO_BREAKPOINT,
  34             substrs=["stopped", "stop reason = breakpoint"],
  35         )
  36
  37         # This is the function to remove the custom formats in order to have a
  38         # clean slate for the next test case.
  39         def cleanup():
  40             self.runCmd("type format clear", check=False)
  41             self.runCmd("type summary clear", check=False)
  42
  43         # Execute the cleanup function during test case tear down.
  44         self.addTearDownHook(cleanup)
  45
  46         root = self.frame().FindVariable("root")
  47         child = root.GetChildAtIndex(1)
  48         if self.TraceOn():
  49             print(root)
  50             print(child)
  51         for i in range(0, 15000):
  52             child = child.GetChildAtIndex(1)
  53         if self.TraceOn():
  54             print(child)
  55         self.assertTrue(child.IsValid(), "could not retrieve the deep ValueObject")
  56         self.assertTrue(
  57             child.GetChildAtIndex(0).IsValid(), "the deep ValueObject has no value"
  58         )
  59         self.assertNotEqual(
  60             child.GetChildAtIndex(0).GetValueAsUnsigned(),
  61             0,
  62             "the deep ValueObject has a zero value",
  63         )
  64         self.assertNotEqual(
  65             child.GetChildAtIndex(1).GetValueAsUnsigned(),
  66             0,
  67             "the deep ValueObject has no next",
  68         )