136 lines
4.8 KiB
Python
136 lines
4.8 KiB
Python
"""
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Test lldb Python API SBValue::Cast(SBType) for C++ types.
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"""
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from __future__ import print_function
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import unittest2
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import lldb
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from lldbsuite.test.decorators import *
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from lldbsuite.test.lldbtest import *
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from lldbsuite.test import lldbutil
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class CppValueCastTestCase(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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@skipIf(bugnumber="llvm.org/PR36714")
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@add_test_categories(['pyapi'])
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def test_value_cast_with_virtual_inheritance(self):
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"""Test SBValue::Cast(SBType) API for C++ types with virtual inheritance."""
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self.build(dictionary=self.d_virtual)
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self.setTearDownCleanup(dictionary=self.d_virtual)
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self.do_sbvalue_cast(self.exe_name)
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@add_test_categories(['pyapi'])
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def test_value_cast_with_regular_inheritance(self):
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"""Test SBValue::Cast(SBType) API for C++ types with regular inheritance."""
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self.build(dictionary=self.d_regular)
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self.setTearDownCleanup(dictionary=self.d_regular)
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self.do_sbvalue_cast(self.exe_name)
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def setUp(self):
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# Call super's setUp().
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TestBase.setUp(self)
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# Find the line number to break for main.c.
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self.source = 'sbvalue-cast.cpp'
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self.line = line_number(self.source, '// Set breakpoint here.')
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self.exe_name = self.testMethodName
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self.d_virtual = {
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'CXX_SOURCES': self.source,
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'EXE': self.exe_name,
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'CFLAGS_EXTRAS': '-DDO_VIRTUAL_INHERITANCE'}
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self.d_regular = {'CXX_SOURCES': self.source, 'EXE': self.exe_name}
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def do_sbvalue_cast(self, exe_name):
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"""Test SBValue::Cast(SBType) API for C++ types."""
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exe = self.getBuildArtifact(exe_name)
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# Create a target from the debugger.
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target = self.dbg.CreateTarget(exe)
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self.assertTrue(target, VALID_TARGET)
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# Set up our breakpoints:
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breakpoint = target.BreakpointCreateByLocation(self.source, self.line)
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self.assertTrue(breakpoint, VALID_BREAKPOINT)
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# Now launch the process, and do not stop at the entry point.
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process = target.LaunchSimple(
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None, None, self.get_process_working_directory())
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self.assertTrue(process.GetState() == lldb.eStateStopped,
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PROCESS_STOPPED)
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# Find DerivedA and DerivedB types.
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typeA = target.FindFirstType('DerivedA')
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typeB = target.FindFirstType('DerivedB')
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self.DebugSBType(typeA)
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self.DebugSBType(typeB)
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self.assertTrue(typeA)
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self.assertTrue(typeB)
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error = lldb.SBError()
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# First stop is for DerivedA instance.
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threads = lldbutil.get_threads_stopped_at_breakpoint(
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process, breakpoint)
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self.assertTrue(len(threads) == 1)
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thread = threads[0]
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frame0 = thread.GetFrameAtIndex(0)
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tellerA = frame0.FindVariable('teller', lldb.eNoDynamicValues)
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self.DebugSBValue(tellerA)
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self.assertTrue(tellerA.GetChildMemberWithName(
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'm_base_val').GetValueAsUnsigned(error, 0) == 20)
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if self.TraceOn():
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for child in tellerA:
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print("child name:", child.GetName())
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print(child)
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# Call SBValue.Cast() to obtain instanceA.
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instanceA = tellerA.Cast(typeA.GetPointerType())
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self.DebugSBValue(instanceA)
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# Iterate through all the children and print their values.
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if self.TraceOn():
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for child in instanceA:
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print("child name:", child.GetName())
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print(child)
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a_member_val = instanceA.GetChildMemberWithName('m_a_val')
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self.DebugSBValue(a_member_val)
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self.assertTrue(a_member_val.GetValueAsUnsigned(error, 0) == 10)
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# Second stop is for DerivedB instance.
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threads = lldbutil.continue_to_breakpoint(process, breakpoint)
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self.assertTrue(len(threads) == 1)
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thread = threads[0]
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frame0 = thread.GetFrameAtIndex(0)
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tellerB = frame0.FindVariable('teller', lldb.eNoDynamicValues)
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self.DebugSBValue(tellerB)
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self.assertTrue(tellerB.GetChildMemberWithName(
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'm_base_val').GetValueAsUnsigned(error, 0) == 12)
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if self.TraceOn():
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for child in tellerB:
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print("child name:", child.GetName())
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print(child)
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# Call SBValue.Cast() to obtain instanceB.
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instanceB = tellerB.Cast(typeB.GetPointerType())
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self.DebugSBValue(instanceB)
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# Iterate through all the children and print their values.
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if self.TraceOn():
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for child in instanceB:
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print("child name:", child.GetName())
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print(child)
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b_member_val = instanceB.GetChildMemberWithName('m_b_val')
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self.DebugSBValue(b_member_val)
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self.assertTrue(b_member_val.GetValueAsUnsigned(error, 0) == 36)
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