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Diffstat (limited to 'packages/Python/lldbsuite/test/lang/objc/objc-dynamic-value/TestObjCDynamicValue.py')
| -rw-r--r-- | packages/Python/lldbsuite/test/lang/objc/objc-dynamic-value/TestObjCDynamicValue.py | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/packages/Python/lldbsuite/test/lang/objc/objc-dynamic-value/TestObjCDynamicValue.py b/packages/Python/lldbsuite/test/lang/objc/objc-dynamic-value/TestObjCDynamicValue.py new file mode 100644 index 0000000..acddfb8 --- /dev/null +++ b/packages/Python/lldbsuite/test/lang/objc/objc-dynamic-value/TestObjCDynamicValue.py @@ -0,0 +1,177 @@ +""" +Use lldb Python API to test dynamic values in ObjC +""" + +from __future__ import print_function + + + +import os, time +import re +import lldb +import lldbsuite.test.lldbutil as lldbutil +from lldbsuite.test.lldbtest import * + +class ObjCDynamicValueTestCase(TestBase): + + mydir = TestBase.compute_mydir(__file__) + + def setUp(self): + # Call super's setUp(). + TestBase.setUp(self) + + # Find the line number to break for main.c. + + self.source_name = 'dynamic-value.m' + self.set_property_line = line_number(self.source_name, '// This is the line in setProperty, make sure we step to here.') + self.handle_SourceBase = line_number(self.source_name, + '// Break here to check dynamic values.') + self.main_before_setProperty_line = line_number(self.source_name, + '// Break here to see if we can step into real method.') + + @skipUnlessDarwin + @add_test_categories(['pyapi']) + @expectedFailureDarwin("llvm.org/pr20271 rdar://18684107") + def test_get_objc_dynamic_vals(self): + """Test fetching ObjC dynamic values.""" + if self.getArchitecture() == 'i386': + # rdar://problem/9946499 + self.skipTest("Dynamic types for ObjC V1 runtime not implemented") + + self.build() + exe = os.path.join(os.getcwd(), "a.out") + + # Create a target from the debugger. + + target = self.dbg.CreateTarget (exe) + self.assertTrue(target, VALID_TARGET) + + # Set up our breakpoints: + + handle_SourceBase_bkpt = target.BreakpointCreateByLocation(self.source_name, self.handle_SourceBase) + self.assertTrue(handle_SourceBase_bkpt and + handle_SourceBase_bkpt.GetNumLocations() == 1, + VALID_BREAKPOINT) + + main_before_setProperty_bkpt = target.BreakpointCreateByLocation(self.source_name, self.main_before_setProperty_line) + self.assertTrue(main_before_setProperty_bkpt and + main_before_setProperty_bkpt.GetNumLocations() == 1, + VALID_BREAKPOINT) + + # Now launch the process, and do not stop at the entry point. + process = target.LaunchSimple (None, None, self.get_process_working_directory()) + + self.assertTrue(process.GetState() == lldb.eStateStopped, + PROCESS_STOPPED) + + threads = lldbutil.get_threads_stopped_at_breakpoint (process, main_before_setProperty_bkpt) + self.assertTrue (len(threads) == 1) + thread = threads[0] + + # + # At this point, myObserver has a Source pointer that is actually a KVO swizzled SourceDerived + # make sure we can get that properly: + + frame = thread.GetFrameAtIndex(0) + myObserver = frame.FindVariable('myObserver', lldb.eDynamicCanRunTarget) + self.assertTrue (myObserver) + myObserver_source = myObserver.GetChildMemberWithName ('_source', lldb.eDynamicCanRunTarget) + self.examine_SourceDerived_ptr (myObserver_source) + + # + # Make sure a static value can be correctly turned into a dynamic value. + + frame = thread.GetFrameAtIndex(0) + myObserver_static = frame.FindVariable('myObserver', lldb.eNoDynamicValues) + self.assertTrue (myObserver_static) + myObserver = myObserver_static.GetDynamicValue (lldb.eDynamicCanRunTarget) + myObserver_source = myObserver.GetChildMemberWithName ('_source', lldb.eDynamicCanRunTarget) + self.examine_SourceDerived_ptr (myObserver_source) + + # The "frame var" code uses another path to get into children, so let's + # make sure that works as well: + + result = lldb.SBCommandReturnObject() + + self.expect('frame var -d run-target myObserver->_source', 'frame var finds its way into a child member', + patterns = ['\(SourceDerived \*\)']) + + # check that our ObjC GetISA() does a good job at hiding KVO swizzled classes + + self.expect('frame var -d run-target myObserver->_source -T', 'the KVO-ed class is hidden', + substrs = ['SourceDerived']) + + self.expect('frame var -d run-target myObserver->_source -T', 'the KVO-ed class is hidden', matching = False, + substrs = ['NSKVONotify']) + + # This test is not entirely related to the main thrust of this test case, but since we're here, + # try stepping into setProperty, and make sure we get into the version in Source: + + thread.StepInto() + + threads = lldbutil.get_stopped_threads (process, lldb.eStopReasonPlanComplete) + self.assertTrue (len(threads) == 1) + line_entry = threads[0].GetFrameAtIndex(0).GetLineEntry() + + self.assertEqual (line_entry.GetLine(), self.set_property_line) + self.assertEqual (line_entry.GetFileSpec().GetFilename(), self.source_name) + + # Okay, back to the main business. Continue to the handle_SourceBase and make sure we get the correct dynamic value. + + threads = lldbutil.continue_to_breakpoint (process, handle_SourceBase_bkpt) + self.assertTrue (len(threads) == 1) + thread = threads[0] + + frame = thread.GetFrameAtIndex(0) + + # Get "object" using FindVariable: + + noDynamic = lldb.eNoDynamicValues + useDynamic = lldb.eDynamicCanRunTarget + + object_static = frame.FindVariable ('object', noDynamic) + object_dynamic = frame.FindVariable ('object', useDynamic) + + # Delete this object to make sure that this doesn't cause havoc with the dynamic object that depends on it. + del (object_static) + + self.examine_SourceDerived_ptr (object_dynamic) + + # Get "this" using FindValue, make sure that works too: + object_static = frame.FindValue ('object', lldb.eValueTypeVariableArgument, noDynamic) + object_dynamic = frame.FindValue ('object', lldb.eValueTypeVariableArgument, useDynamic) + del (object_static) + self.examine_SourceDerived_ptr (object_dynamic) + + # Get "this" using the EvaluateExpression: + object_static = frame.EvaluateExpression ('object', noDynamic) + object_dynamic = frame.EvaluateExpression ('object', useDynamic) + del (object_static) + self.examine_SourceDerived_ptr (object_dynamic) + + # Continue again to the handle_SourceBase and make sure we get the correct dynamic value. + # This one looks exactly the same, but in fact this is an "un-KVO'ed" version of SourceBase, so + # its isa pointer points to SourceBase not NSKVOSourceBase or whatever... + + threads = lldbutil.continue_to_breakpoint (process, handle_SourceBase_bkpt) + self.assertTrue (len(threads) == 1) + thread = threads[0] + + frame = thread.GetFrameAtIndex(0) + + # Get "object" using FindVariable: + + object_static = frame.FindVariable ('object', noDynamic) + object_dynamic = frame.FindVariable ('object', useDynamic) + + # Delete this object to make sure that this doesn't cause havoc with the dynamic object that depends on it. + del (object_static) + + self.examine_SourceDerived_ptr (object_dynamic) + + def examine_SourceDerived_ptr (self, object): + self.assertTrue (object) + self.assertTrue (object.GetTypeName().find ('SourceDerived') != -1) + derivedValue = object.GetChildMemberWithName ('_derivedValue') + self.assertTrue (derivedValue) + self.assertTrue (int (derivedValue.GetValue(), 0) == 30) |
