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"""Test printing ivars and ObjC objects captured in blocks that are made in methods of an ObjC class."""
from __future__ import print_function
import os, time
import lldb
from lldbsuite.test.lldbtest import *
import lldbsuite.test.lldbutil as lldbutil
class TestObjCIvarsInBlocks(TestBase):
mydir = TestBase.compute_mydir(__file__)
def setUp(self):
# Call super's setUp().
TestBase.setUp(self)
# Find the line numbers to break inside main().
self.main_source = "main.m"
self.class_source = "ivars-in-blocks.m"
self.class_source_file_spec = lldb.SBFileSpec(self.class_source)
@skipUnlessDarwin
@add_test_categories(['pyapi'])
@expectedFailurei386 # This test requires the 2.0 runtime, so it will fail on i386.
def test_with_python_api(self):
"""Test printing the ivars of the self when captured in blocks"""
self.build()
exe = os.path.join(os.getcwd(), "a.out")
target = self.dbg.CreateTarget(exe)
self.assertTrue(target, VALID_TARGET)
breakpoint = target.BreakpointCreateBySourceRegex ('// Break here inside the block.', self.class_source_file_spec)
self.assertTrue(breakpoint, VALID_BREAKPOINT)
breakpoint_two = target.BreakpointCreateBySourceRegex ('// Break here inside the class method block.', self.class_source_file_spec)
self.assertTrue(breakpoint, VALID_BREAKPOINT)
process = target.LaunchSimple (None, None, self.get_process_working_directory())
self.assertTrue (process, "Created a process.")
self.assertTrue (process.GetState() == lldb.eStateStopped, "Stopped it too.")
thread_list = lldbutil.get_threads_stopped_at_breakpoint (process, breakpoint)
self.assertTrue (len(thread_list) == 1)
thread = thread_list[0]
frame = thread.GetFrameAtIndex(0)
self.assertTrue (frame, "frame 0 is valid")
# First use the FindVariable API to see if we can find the ivar by undecorated name:
direct_blocky = frame.GetValueForVariablePath ("blocky_ivar")
self.assertTrue(direct_blocky, "Found direct access to blocky_ivar.")
# Now get it as a member of "self" and make sure the two values are equal:
self_var = frame.GetValueForVariablePath ("self")
self.assertTrue (self_var, "Found self in block.")
indirect_blocky = self_var.GetChildMemberWithName ("blocky_ivar")
self.assertTrue (indirect_blocky, "Found blocky_ivar through self")
error = lldb.SBError()
direct_value = direct_blocky.GetValueAsSigned(error)
self.assertTrue (error.Success(), "Got direct value for blocky_ivar")
indirect_value = indirect_blocky.GetValueAsSigned (error)
self.assertTrue (error.Success(), "Got indirect value for blocky_ivar")
self.assertTrue (direct_value == indirect_value, "Direct and indirect values are equal.")
# Now make sure that we can get at the captured ivar through the expression parser.
# Doing a little trivial math will force this into the real expression parser:
direct_expr = frame.EvaluateExpression ("blocky_ivar + 10")
self.assertTrue (direct_expr, "Got blocky_ivar through the expression parser")
# Again, get the value through self directly and make sure they are the same:
indirect_expr = frame.EvaluateExpression ("self->blocky_ivar + 10")
self.assertTrue (indirect_expr, "Got blocky ivar through expression parser using self.")
direct_value = direct_expr.GetValueAsSigned (error)
self.assertTrue (error.Success(), "Got value from direct use of expression parser")
indirect_value = indirect_expr.GetValueAsSigned (error)
self.assertTrue (error.Success(), "Got value from indirect access using the expression parser")
self.assertTrue (direct_value == indirect_value, "Direct ivar access and indirect through expression parser produce same value.")
process.Continue()
self.assertTrue (process.GetState() == lldb.eStateStopped, "Stopped at the second breakpoint.")
thread_list = lldbutil.get_threads_stopped_at_breakpoint (process, breakpoint_two)
self.assertTrue (len(thread_list) == 1)
thread = thread_list[0]
frame = thread.GetFrameAtIndex(0)
self.assertTrue (frame, "frame 0 is valid")
expr = frame.EvaluateExpression("(ret)")
self.assertTrue (expr, "Successfully got a local variable in a block in a class method.")
ret_value_signed = expr.GetValueAsSigned (error)
# print('ret_value_signed = %i' % (ret_value_signed))
self.assertTrue (ret_value_signed == 5, "The local variable in the block was what we expected.")
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