ce825e4674
Add a function to make it easier to debug a test failure caused by an unexpected state. Currently, tests are using assertEqual which results in a cryptic error message: "AssertionError: 5 != 10". Even when a test provides a message to make it clear why a particular state is expected, you still have to figure out which of the two was the expected state, and what the other value corresponds to. We have a function in lldbutil that helps you convert the state number into a user readable string. This patch adds a wrapper around assertEqual specifically for comparing states and reporting better error messages. The aforementioned error message now looks like this: "AssertionError: stopped (5) != exited (10)". If the user provided a message, that continues to get printed as well. Differential revision: https://reviews.llvm.org/D127355
104 lines
3.5 KiB
Python
104 lines
3.5 KiB
Python
"""
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Test that we handle breakpoints on consecutive instructions correctly.
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"""
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import unittest2
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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 ConsecutiveBreakpointsTestCase(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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def prepare_test(self):
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self.build()
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(self.target, self.process, self.thread, bkpt) = lldbutil.run_to_source_breakpoint(
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self, "Set breakpoint here", lldb.SBFileSpec("main.cpp"))
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# Set breakpoint to the next instruction
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frame = self.thread.GetFrameAtIndex(0)
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address = frame.GetPCAddress()
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instructions = self.target.ReadInstructions(address, 2)
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self.assertEquals(len(instructions), 2)
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self.bkpt_address = instructions[1].GetAddress()
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self.breakpoint2 = self.target.BreakpointCreateByAddress(
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self.bkpt_address.GetLoadAddress(self.target))
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self.assertTrue(
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self.breakpoint2 and self.breakpoint2.GetNumLocations() == 1,
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VALID_BREAKPOINT)
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def finish_test(self):
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# Run the process until termination
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self.process.Continue()
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self.assertState(self.process.GetState(), lldb.eStateExited)
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@no_debug_info_test
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def test_continue(self):
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"""Test that continue stops at the second breakpoint."""
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self.prepare_test()
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self.process.Continue()
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self.assertState(self.process.GetState(), lldb.eStateStopped)
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# We should be stopped at the second breakpoint
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self.thread = lldbutil.get_one_thread_stopped_at_breakpoint(
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self.process, self.breakpoint2)
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self.assertIsNotNone(
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self.thread,
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"Expected one thread to be stopped at breakpoint 2")
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self.finish_test()
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@no_debug_info_test
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def test_single_step(self):
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"""Test that single step stops at the second breakpoint."""
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self.prepare_test()
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step_over = False
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self.thread.StepInstruction(step_over)
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self.assertState(self.process.GetState(), lldb.eStateStopped)
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self.assertEquals(
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self.thread.GetFrameAtIndex(0).GetPCAddress().GetLoadAddress(
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self.target), self.bkpt_address.GetLoadAddress(
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self.target))
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self.thread = lldbutil.get_one_thread_stopped_at_breakpoint(
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self.process, self.breakpoint2)
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self.assertIsNotNone(
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self.thread,
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"Expected one thread to be stopped at breakpoint 2")
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self.finish_test()
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@no_debug_info_test
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def test_single_step_thread_specific(self):
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"""Test that single step stops, even though the second breakpoint is not valid."""
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self.prepare_test()
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# Choose a thread other than the current one. A non-existing thread is
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# fine.
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thread_index = self.process.GetNumThreads() + 1
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self.assertFalse(self.process.GetThreadAtIndex(thread_index).IsValid())
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self.breakpoint2.SetThreadIndex(thread_index)
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step_over = False
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self.thread.StepInstruction(step_over)
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self.assertState(self.process.GetState(), lldb.eStateStopped)
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self.assertEquals(
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self.thread.GetFrameAtIndex(0).GetPCAddress().GetLoadAddress(
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self.target), self.bkpt_address.GetLoadAddress(
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self.target))
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self.assertEquals(
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self.thread.GetStopReason(),
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lldb.eStopReasonPlanComplete,
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"Stop reason should be 'plan complete'")
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self.finish_test()
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