lldb/test/API/commands/expression/timeout/TestCallWithTimeout.py

"""
Test calling a function that waits a while, and make sure the timeout option to expr works.
"""


import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil


@skipIfWasm  # no expression evaluation
class ExprCommandWithTimeoutsTestCase(TestBase):
    def setUp(self):
        # Call super's setUp().
        TestBase.setUp(self)

        self.main_source = "wait-a-while.cpp"
        self.main_source_spec = lldb.SBFileSpec(self.main_source)

    @expectedFlakeyFreeBSD("llvm.org/pr19605")
    @expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr21765")
    def test(self):
        """Test calling std::String member function."""
        self.build()

        (target, process, thread, bkpt) = lldbutil.run_to_source_breakpoint(
            self, "stop here in main.", self.main_source_spec
        )

        short_time = 5000
        long_time = short_time * 1000

        # First set the timeout too short, and make sure we fail.
        options = lldb.SBExpressionOptions()
        options.SetTimeoutInMicroSeconds(short_time)
        options.SetUnwindOnError(True)

        frame = thread.GetFrameAtIndex(0)

        value = frame.EvaluateExpression(f"wait_a_while({long_time})", options)
        self.assertTrue(value.IsValid())
        self.assertFalse(value.GetError().Success())

        # Now do the same thing with the command line command, and make sure it
        # works too.
        interp = self.dbg.GetCommandInterpreter()

        result = lldb.SBCommandReturnObject()
        return_value = interp.HandleCommand(
            f"expr -t {short_time} -u true -- wait_a_while({long_time})", result
        )
        self.assertEqual(return_value, lldb.eReturnStatusFailed)

        # Okay, now do it again with long enough time outs:

        options.SetTimeoutInMicroSeconds(long_time)
        value = frame.EvaluateExpression(f"wait_a_while({short_time})", options)
        self.assertTrue(value.IsValid())
        self.assertSuccess(value.GetError())

        # Now do the same thingwith the command line command, and make sure it
        # works too.
        interp = self.dbg.GetCommandInterpreter()

        result = lldb.SBCommandReturnObject()
        return_value = interp.HandleCommand(
            f"expr -t {long_time} -u true -- wait_a_while({short_time})", result
        )
        self.assertEqual(return_value, lldb.eReturnStatusSuccessFinishResult)

        # Finally set the one thread timeout and make sure that doesn't change
        # things much:

        options.SetTimeoutInMicroSeconds(long_time)
        options.SetOneThreadTimeoutInMicroSeconds(1000000)
        value = frame.EvaluateExpression(f"wait_a_while({short_time})", options)
        self.assertTrue(value.IsValid())
        self.assertSuccess(value.GetError())