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# encoding: utf-8
"""
Test lldb Obj-C exception support.
"""
from __future__ import print_function
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class ObjCExceptionsTestCase(TestBase):
mydir = TestBase.compute_mydir(__file__)
@skipUnlessDarwin
def test_objc_exceptions_1(self):
self.build()
target = self.dbg.CreateTarget(self.getBuildArtifact("a.out"))
self.assertTrue(target, VALID_TARGET)
lldbutil.run_to_name_breakpoint(self, "objc_exception_throw")
self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
substrs=['stopped', 'stop reason = breakpoint'])
self.expect('thread exception', substrs=[
'(NSException *) exception = ',
'name: "ThrownException" - reason: "SomeReason"',
])
lldbutil.run_to_source_breakpoint(self, "// Set break point at this line.", lldb.SBFileSpec("main.m"))
self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
substrs=['stopped', 'stop reason = breakpoint'])
target = self.dbg.GetSelectedTarget()
thread = target.GetProcess().GetSelectedThread()
frame = thread.GetSelectedFrame()
self.expect(
'frame variable e1',
substrs=[
'(NSException *) e1 = ',
'name: @"ExceptionName" - reason: @"SomeReason"'
])
self.expect(
'frame variable --dynamic-type no-run-target *e1',
substrs=[
'(NSException) *e1 = ',
'name = ', '@"ExceptionName"',
'reason = ', '@"SomeReason"',
'userInfo = ', '1 key/value pair',
'reserved = ', 'nil',
])
e1 = frame.FindVariable("e1")
self.assertTrue(e1)
self.assertEqual(e1.type.name, "NSException *")
self.assertEqual(e1.GetSummary(), 'name: @"ExceptionName" - reason: @"SomeReason"')
self.assertEqual(e1.GetChildMemberWithName("name").description, "ExceptionName")
self.assertEqual(e1.GetChildMemberWithName("reason").description, "SomeReason")
userInfo = e1.GetChildMemberWithName("userInfo").dynamic
self.assertEqual(userInfo.summary, "1 key/value pair")
self.assertEqual(userInfo.GetChildAtIndex(0).GetChildAtIndex(0).description, "some_key")
self.assertEqual(userInfo.GetChildAtIndex(0).GetChildAtIndex(1).description, "some_value")
self.assertEqual(e1.GetChildMemberWithName("reserved").description, "<nil>")
self.expect(
'frame variable e2',
substrs=[
'(NSException *) e2 = ',
'name: @"ThrownException" - reason: @"SomeReason"'
])
self.expect(
'frame variable --dynamic-type no-run-target *e2',
substrs=[
'(NSException) *e2 = ',
'name = ', '@"ThrownException"',
'reason = ', '@"SomeReason"',
'userInfo = ', '1 key/value pair',
'reserved = ',
])
e2 = frame.FindVariable("e2")
self.assertTrue(e2)
self.assertEqual(e2.type.name, "NSException *")
self.assertEqual(e2.GetSummary(), 'name: @"ThrownException" - reason: @"SomeReason"')
self.assertEqual(e2.GetChildMemberWithName("name").description, "ThrownException")
self.assertEqual(e2.GetChildMemberWithName("reason").description, "SomeReason")
userInfo = e2.GetChildMemberWithName("userInfo").dynamic
self.assertEqual(userInfo.summary, "1 key/value pair")
self.assertEqual(userInfo.GetChildAtIndex(0).GetChildAtIndex(0).description, "some_key")
self.assertEqual(userInfo.GetChildAtIndex(0).GetChildAtIndex(1).description, "some_value")
reserved = e2.GetChildMemberWithName("reserved").dynamic
self.assertGreater(reserved.num_children, 0)
callStackReturnAddresses = [reserved.GetChildAtIndex(i).GetChildAtIndex(1) for i in range(0, reserved.GetNumChildren())
if reserved.GetChildAtIndex(i).GetChildAtIndex(0).description == "callStackReturnAddresses"][0].dynamic
children = [callStackReturnAddresses.GetChildAtIndex(i) for i in range(0, callStackReturnAddresses.num_children)]
pcs = [i.unsigned for i in children]
names = [target.ResolveSymbolContextForAddress(lldb.SBAddress(pc, target), lldb.eSymbolContextSymbol).GetSymbol().name for pc in pcs]
for n in ["objc_exception_throw", "foo", "main"]:
self.assertTrue(n in names, "%s is in the exception backtrace (%s)" % (n, names))
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