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95c453a221
For convenience, we had added the folder that dotest.py was in to sys.path, so that we could easily write things like `import lldbutil` from anywhere and any test. This introduces a subtle problem when using Python's package system, because when unittest2 imports a particular test suite, the test suite is detached from the package. Thus, writing "import lldbutil" from dotest imports it as part of the package, and writing the same line from a test does a fresh import since the importing module was not part of the same package. The real way to fix this is to use absolute imports everywhere. Instead of writing "import lldbutil", we need to write "import lldbsuite.test.util". This patch fixes up that and all other similar cases, and additionally removes the script directory from sys.path to ensure that this can't happen again. llvm-svn: 251886
178 lines
7.6 KiB
Python
178 lines
7.6 KiB
Python
"""
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Use lldb Python API to test dynamic values in ObjC
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"""
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from __future__ import print_function
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import use_lldb_suite
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import os, time
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import re
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import lldb
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import lldbsuite.test.lldbutil as lldbutil
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from lldbsuite.test.lldbtest import *
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class ObjCDynamicValueTestCase(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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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_name = 'dynamic-value.m'
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self.set_property_line = line_number(self.source_name, '// This is the line in setProperty, make sure we step to here.')
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self.handle_SourceBase = line_number(self.source_name,
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'// Break here to check dynamic values.')
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self.main_before_setProperty_line = line_number(self.source_name,
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'// Break here to see if we can step into real method.')
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@skipUnlessDarwin
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@add_test_categories(['pyapi'])
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@expectedFailureDarwin("llvm.org/pr20271 rdar://18684107")
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def test_get_objc_dynamic_vals(self):
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"""Test fetching ObjC dynamic values."""
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if self.getArchitecture() == 'i386':
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# rdar://problem/9946499
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self.skipTest("Dynamic types for ObjC V1 runtime not implemented")
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self.build()
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exe = os.path.join(os.getcwd(), "a.out")
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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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handle_SourceBase_bkpt = target.BreakpointCreateByLocation(self.source_name, self.handle_SourceBase)
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self.assertTrue(handle_SourceBase_bkpt and
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handle_SourceBase_bkpt.GetNumLocations() == 1,
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VALID_BREAKPOINT)
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main_before_setProperty_bkpt = target.BreakpointCreateByLocation(self.source_name, self.main_before_setProperty_line)
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self.assertTrue(main_before_setProperty_bkpt and
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main_before_setProperty_bkpt.GetNumLocations() == 1,
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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 (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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threads = lldbutil.get_threads_stopped_at_breakpoint (process, main_before_setProperty_bkpt)
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self.assertTrue (len(threads) == 1)
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thread = threads[0]
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#
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# At this point, myObserver has a Source pointer that is actually a KVO swizzled SourceDerived
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# make sure we can get that properly:
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frame = thread.GetFrameAtIndex(0)
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myObserver = frame.FindVariable('myObserver', lldb.eDynamicCanRunTarget)
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self.assertTrue (myObserver)
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myObserver_source = myObserver.GetChildMemberWithName ('_source', lldb.eDynamicCanRunTarget)
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self.examine_SourceDerived_ptr (myObserver_source)
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#
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# Make sure a static value can be correctly turned into a dynamic value.
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frame = thread.GetFrameAtIndex(0)
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myObserver_static = frame.FindVariable('myObserver', lldb.eNoDynamicValues)
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self.assertTrue (myObserver_static)
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myObserver = myObserver_static.GetDynamicValue (lldb.eDynamicCanRunTarget)
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myObserver_source = myObserver.GetChildMemberWithName ('_source', lldb.eDynamicCanRunTarget)
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self.examine_SourceDerived_ptr (myObserver_source)
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# The "frame var" code uses another path to get into children, so let's
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# make sure that works as well:
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result = lldb.SBCommandReturnObject()
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self.expect('frame var -d run-target myObserver->_source', 'frame var finds its way into a child member',
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patterns = ['\(SourceDerived \*\)'])
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# check that our ObjC GetISA() does a good job at hiding KVO swizzled classes
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self.expect('frame var -d run-target myObserver->_source -T', 'the KVO-ed class is hidden',
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substrs = ['SourceDerived'])
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self.expect('frame var -d run-target myObserver->_source -T', 'the KVO-ed class is hidden', matching = False,
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substrs = ['NSKVONotify'])
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# This test is not entirely related to the main thrust of this test case, but since we're here,
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# try stepping into setProperty, and make sure we get into the version in Source:
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thread.StepInto()
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threads = lldbutil.get_stopped_threads (process, lldb.eStopReasonPlanComplete)
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self.assertTrue (len(threads) == 1)
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line_entry = threads[0].GetFrameAtIndex(0).GetLineEntry()
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self.assertEqual (line_entry.GetLine(), self.set_property_line)
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self.assertEqual (line_entry.GetFileSpec().GetFilename(), self.source_name)
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# Okay, back to the main business. Continue to the handle_SourceBase and make sure we get the correct dynamic value.
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threads = lldbutil.continue_to_breakpoint (process, handle_SourceBase_bkpt)
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self.assertTrue (len(threads) == 1)
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thread = threads[0]
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frame = thread.GetFrameAtIndex(0)
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# Get "object" using FindVariable:
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noDynamic = lldb.eNoDynamicValues
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useDynamic = lldb.eDynamicCanRunTarget
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object_static = frame.FindVariable ('object', noDynamic)
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object_dynamic = frame.FindVariable ('object', useDynamic)
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# Delete this object to make sure that this doesn't cause havoc with the dynamic object that depends on it.
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del (object_static)
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self.examine_SourceDerived_ptr (object_dynamic)
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# Get "this" using FindValue, make sure that works too:
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object_static = frame.FindValue ('object', lldb.eValueTypeVariableArgument, noDynamic)
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object_dynamic = frame.FindValue ('object', lldb.eValueTypeVariableArgument, useDynamic)
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del (object_static)
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self.examine_SourceDerived_ptr (object_dynamic)
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# Get "this" using the EvaluateExpression:
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object_static = frame.EvaluateExpression ('object', noDynamic)
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object_dynamic = frame.EvaluateExpression ('object', useDynamic)
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del (object_static)
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self.examine_SourceDerived_ptr (object_dynamic)
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# Continue again to the handle_SourceBase and make sure we get the correct dynamic value.
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# This one looks exactly the same, but in fact this is an "un-KVO'ed" version of SourceBase, so
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# its isa pointer points to SourceBase not NSKVOSourceBase or whatever...
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threads = lldbutil.continue_to_breakpoint (process, handle_SourceBase_bkpt)
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self.assertTrue (len(threads) == 1)
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thread = threads[0]
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frame = thread.GetFrameAtIndex(0)
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# Get "object" using FindVariable:
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object_static = frame.FindVariable ('object', noDynamic)
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object_dynamic = frame.FindVariable ('object', useDynamic)
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# Delete this object to make sure that this doesn't cause havoc with the dynamic object that depends on it.
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del (object_static)
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self.examine_SourceDerived_ptr (object_dynamic)
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def examine_SourceDerived_ptr (self, object):
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self.assertTrue (object)
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self.assertTrue (object.GetTypeName().find ('SourceDerived') != -1)
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derivedValue = object.GetChildMemberWithName ('_derivedValue')
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self.assertTrue (derivedValue)
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self.assertTrue (int (derivedValue.GetValue(), 0) == 30)
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