f79c037b63
We were checking "WasTheLastResumeForUserExpression" but that returns true even if that expression was completed, provided we haven't run again. This uses a better check. This is actually fairly hard to trigger. It happens the first time you hit an objc_exception_throw breakpoint and invoke that frame recognizer for that. But I couldn't trigger it using a Python based frame recognizer. So I wrote a test for the objc_exception_throw_breakpoint recognizer which should have been there anyway... It fails (the target auto-continues) w/o this patch and succeeds with it. Differential Revision: https://reviews.llvm.org/D147587
70 lines
3.2 KiB
Python
70 lines
3.2 KiB
Python
"""
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Test that the built in ObjC exception throw recognizer works
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"""
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import lldb
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from lldbsuite.test.decorators import *
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import lldbsuite.test.lldbutil as lldbutil
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from lldbsuite.test.lldbtest import *
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class TestObjCRecognizer(TestBase):
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NO_DEBUG_INFO_TESTCASE = True
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@skipUnlessDarwin
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def test_exception_recognizer_sub_class(self):
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"""There can be many tests in a test case - describe this test here."""
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self.build()
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self.main_source_file = lldb.SBFileSpec("main.m")
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self.objc_recognizer_test(True)
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@skipUnlessDarwin
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def test_exception_recognizer_plain(self):
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"""There can be many tests in a test case - describe this test here."""
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self.build()
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self.main_source_file = lldb.SBFileSpec("main.m")
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self.objc_recognizer_test(False)
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def objc_recognizer_test(self, sub_class):
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"""Make sure we stop at the exception and get all the fields out of the recognizer.
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If sub_class is True, we make a subclass of NSException and throw that."""
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if sub_class:
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bkpt_string = "Set a breakpoint here for MyException"
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else:
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bkpt_string = "Set a breakpoint here for plain exception"
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(target, process, thread, bkpt) = lldbutil.run_to_source_breakpoint(self,
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bkpt_string, self.main_source_file)
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# Now turn on the ObjC Exception breakpoint and continue to hit it:
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exception_bkpt = target.BreakpointCreateForException(lldb.eLanguageTypeObjC, False, True)
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self.assertTrue(exception_bkpt.GetNumLocations() > 0, "Got some exception locations")
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threads = lldbutil.continue_to_breakpoint(process, exception_bkpt)
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self.assertEqual(len(threads), 1, "One thread hit exception breakpoint")
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frame = threads[0].frame[0]
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var_opts = lldb.SBVariablesOptions()
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var_opts.SetIncludeRecognizedArguments(True)
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var_opts.SetUseDynamic(True)
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vars = frame.GetVariables(var_opts)
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self.assertEqual(len(vars), 1, "Got the synthetic argument")
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self.assertTrue(vars[0].IsValid(), "Got a valid Exception variable")
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# This will be a pointer
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ns_exception_children = [ValueCheck(type="NSObject"),
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ValueCheck(name="name", summary='"NSException"'),
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ValueCheck(name="reason", summary='"Simple Reason"'),
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ValueCheck(name="userInfo"),
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ValueCheck(name="reserved")]
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ns_exception = ValueCheck(type="NSException", children=ns_exception_children)
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if not sub_class:
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simple_check = ValueCheck(name="exception", dereference=ns_exception)
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simple_check.check_value(self, vars[0], "Simple exception is right")
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else:
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my_exception_children = [ns_exception, ValueCheck(name="extra_info", type="int", value="100")]
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my_exception = ValueCheck(type="MyException", children=my_exception_children)
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sub_check = ValueCheck(name="exception", type="MyException *", dereference=my_exception)
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sub_check.check_value(self, vars[0], "Subclass exception is right")
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