2238dcc393
This is an ongoing series of commits that are reformatting our Python code. Reformatting is done with `black` (23.1.0). If you end up having problems merging this commit because you have made changes to a python file, the best way to handle that is to run `git checkout --ours <yourfile>` and then reformat it with black. RFC: https://discourse.llvm.org/t/rfc-document-and-standardize-python-code-style Differential revision: https://reviews.llvm.org/D151460
89 lines
3.2 KiB
Python
89 lines
3.2 KiB
Python
"""
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Test stopping at a breakpoint in an expression, and unwinding from there.
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"""
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import lldb
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from lldbsuite.test.decorators import *
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from lldbsuite.test.lldbtest import *
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from lldbsuite.test import lldbutil
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class UnwindFromExpressionTest(TestBase):
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main_spec = lldb.SBFileSpec("main.cpp", False)
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def build_and_run_to_bkpt(self):
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self.build()
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(target, process, self.thread, bkpt) = lldbutil.run_to_source_breakpoint(
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self, "// Set a breakpoint here to get started", self.main_spec
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)
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# Next set a breakpoint in this function, set up Expression options to stop on
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# breakpoint hits, and call the function.
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self.fun_bkpt = self.target().BreakpointCreateBySourceRegex(
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"// Stop inside the function here.", self.main_spec
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)
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self.assertTrue(self.fun_bkpt, VALID_BREAKPOINT)
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@no_debug_info_test
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@expectedFailureAll(bugnumber="llvm.org/pr33164")
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def test_conditional_bktp(self):
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"""
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Test conditional breakpoint handling in the IgnoreBreakpoints = False case
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"""
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self.build_and_run_to_bkpt()
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self.fun_bkpt.SetCondition("0") # Should not get hit
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options = lldb.SBExpressionOptions()
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options.SetIgnoreBreakpoints(False)
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options.SetUnwindOnError(False)
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main_frame = self.thread.GetFrameAtIndex(0)
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val = main_frame.EvaluateExpression("second_function(47)", options)
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self.assertSuccess(val.GetError(), "We did complete the execution.")
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self.assertEquals(47, val.GetValueAsSigned())
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@add_test_categories(["pyapi"])
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@expectedFlakeyNetBSD
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def test_unwind_expression(self):
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"""Test unwinding from an expression."""
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self.build_and_run_to_bkpt()
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# Run test with varying one thread timeouts to also test the halting
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# logic in the IgnoreBreakpoints = False case
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self.do_unwind_test(self.thread, self.fun_bkpt, 1000)
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self.do_unwind_test(self.thread, self.fun_bkpt, 100000)
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def do_unwind_test(self, thread, bkpt, timeout):
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#
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# Use Python API to evaluate expressions while stopped in a stack frame.
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#
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main_frame = thread.GetFrameAtIndex(0)
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options = lldb.SBExpressionOptions()
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options.SetIgnoreBreakpoints(False)
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options.SetUnwindOnError(False)
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options.SetOneThreadTimeoutInMicroSeconds(timeout)
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val = main_frame.EvaluateExpression("a_function_to_call()", options)
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self.assertTrue(val.GetError().Fail(), "We did not complete the execution.")
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error_str = val.GetError().GetCString()
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self.assertTrue(
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"Execution was interrupted, reason: breakpoint" in error_str,
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"And the reason was right.",
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)
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thread = lldbutil.get_one_thread_stopped_at_breakpoint(self.process(), bkpt)
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self.assertTrue(thread.IsValid(), "We are indeed stopped at our breakpoint")
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# Now unwind the expression, and make sure we got back to where we
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# started.
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self.assertSuccess(
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thread.UnwindInnermostExpression(), "We succeeded in unwinding"
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)
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cur_frame = thread.GetFrameAtIndex(0)
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self.assertTrue(cur_frame.IsEqual(main_frame), "We got back to the main frame.")
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