54c2687292
At the moment nearly every test calls something similar to
`self.dbg.CreateTarget(self.getBuildArtifact("a.out"))` and them sometimes
checks if the created target is actually valid with something like
`self.assertTrue(target.IsValid(), "some useless text")`.
Beside being really verbose the error messages generated by this pattern are
always just indicating that the target failed to be created but now why.
This patch introduces a helper function `createTestTarget` to our Test class
that creates the target with the much more verbose `CreateTarget` overload that
gives us back an SBError (with a fancy error). If the target couldn't be created
the function prints out the SBError that LLDB returned and asserts for us. It
also defaults to the "a.out" build artifact path that nearly all tests are using
to avoid to hardcode "a.out" in every test.
I converted a bunch of tests to the new function but I'll do the rest of the
test suite as follow ups.
Reviewed By: JDevlieghere
Differential Revision: https://reviews.llvm.org/D102771
88 lines
3.0 KiB
Python
88 lines
3.0 KiB
Python
"""Test that we are able to evaluate expressions when the inferior is blocked in a syscall"""
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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 ExprSyscallTestCase(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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@expectedFailureAll(
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oslist=["windows"],
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bugnumber="llvm.org/pr21765, getpid() does not exist on Windows")
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@expectedFailureNetBSD
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@skipIfReproducer
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def test_setpgid(self):
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self.build()
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self.expr_syscall()
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def expr_syscall(self):
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# Create a target by the debugger.
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target = self.createTestTarget()
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listener = lldb.SBListener("my listener")
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# launch the inferior and don't wait for it to stop
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self.dbg.SetAsync(True)
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error = lldb.SBError()
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flags = target.GetLaunchInfo().GetLaunchFlags()
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process = target.Launch(listener,
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None, # argv
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None, # envp
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None, # stdin_path
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None, # stdout_path
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None, # stderr_path
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None, # working directory
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flags, # launch flags
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False, # Stop at entry
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error) # error
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self.assertTrue(process and process.IsValid(), PROCESS_IS_VALID)
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event = lldb.SBEvent()
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# Give the child enough time to reach the syscall,
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# while clearing out all the pending events.
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# The last WaitForEvent call will time out after 2 seconds.
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while listener.WaitForEvent(2, event):
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pass
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# now the process should be running (blocked in the syscall)
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self.assertEqual(
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process.GetState(),
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lldb.eStateRunning,
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"Process is running")
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# send the process a signal
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process.SendAsyncInterrupt()
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while listener.WaitForEvent(2, event):
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pass
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# as a result the process should stop
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# in all likelihood we have stopped in the middle of the sleep()
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# syscall
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self.assertEqual(
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process.GetState(),
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lldb.eStateStopped,
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PROCESS_STOPPED)
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thread = process.GetSelectedThread()
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# try evaluating a couple of expressions in this state
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self.expect_expr("release_flag = 1", result_value="1")
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self.expect_expr("(int)getpid()", result_value=str(process.GetProcessID()))
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# and run the process to completion
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process.Continue()
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# process all events
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while listener.WaitForEvent(10, event):
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new_state = lldb.SBProcess.GetStateFromEvent(event)
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if new_state == lldb.eStateExited:
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break
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self.assertEqual(process.GetState(), lldb.eStateExited)
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self.assertEqual(process.GetExitStatus(), 0)
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