115 lines
4.6 KiB
Python
115 lines
4.6 KiB
Python
"""
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Use lldb Python API to verify that expression evaluation for property references uses the correct getters and setters
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"""
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from __future__ import print_function
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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 ObjCPropertyTestCase(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 = 'main.m'
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@skipUnlessDarwin
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@add_test_categories(['pyapi'])
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def test_objc_properties(self):
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"""Test that expr uses the correct property getters and setters"""
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if self.getArchitecture() == 'i386':
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self.skipTest("requires modern objc runtime")
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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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main_bkpt = target.BreakpointCreateBySourceRegex ("Set a breakpoint here.", lldb.SBFileSpec (self.source_name))
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self.assertTrue(main_bkpt and
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main_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_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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mine = frame.FindVariable ("mine")
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self.assertTrue (mine.IsValid())
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access_count = mine.GetChildMemberWithName ("_access_count")
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self.assertTrue (access_count.IsValid())
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start_access_count = access_count.GetValueAsUnsigned (123456)
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self.assertTrue (start_access_count != 123456)
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#
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# The first set of tests test calling the getter & setter of
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# a property that actually only has a getter & setter and no
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# @property.
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#
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nonexistant_value = frame.EvaluateExpression("mine.nonexistantInt", False)
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nonexistant_error = nonexistant_value.GetError()
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self.assertTrue (nonexistant_error.Success())
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nonexistant_int = nonexistant_value.GetValueAsUnsigned (123456)
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self.assertTrue (nonexistant_int == 6)
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# Calling the getter function would up the access count, so make sure that happened.
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new_access_count = access_count.GetValueAsUnsigned (123456)
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self.assertTrue (new_access_count - start_access_count == 1)
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start_access_count = new_access_count
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#
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# Now call the setter, then make sure that
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nonexistant_change = frame.EvaluateExpression("mine.nonexistantInt = 10", False)
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nonexistant_error = nonexistant_change.GetError()
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self.assertTrue (nonexistant_error.Success())
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# Calling the setter function would up the access count, so make sure that happened.
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new_access_count = access_count.GetValueAsUnsigned (123456)
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self.assertTrue (new_access_count - start_access_count == 1)
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start_access_count = new_access_count
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#
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# Now we call the getter of a property that is backed by an ivar,
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# make sure it works and that we actually update the backing ivar.
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#
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backed_value = frame.EvaluateExpression("mine.backedInt", False)
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backed_error = backed_value.GetError()
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self.assertTrue (backed_error.Success())
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backing_value = mine.GetChildMemberWithName ("_backedInt")
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self.assertTrue (backing_value.IsValid())
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self.assertTrue (backed_value.GetValueAsUnsigned (12345) == backing_value.GetValueAsUnsigned(23456))
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unbacked_value = frame.EvaluateExpression("mine.unbackedInt", False)
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unbacked_error = unbacked_value.GetError()
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self.assertTrue (unbacked_error.Success())
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idWithProtocol_value = frame.EvaluateExpression("mine.idWithProtocol", False)
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idWithProtocol_error = idWithProtocol_value.GetError()
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self.assertTrue (idWithProtocol_error.Success())
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self.assertTrue (idWithProtocol_value.GetTypeName() == "id")
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