"""Test the lldb public C++ api when doing multiple debug sessions simultaneously."""

from __future__ import print_function


import os
import re
import subprocess
import sys

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


class TestMultipleSimultaneousDebuggers(TestBase):

    mydir = TestBase.compute_mydir(__file__)

    # This test case fails non-deterministically.
    @skipIfNoSBHeaders
    @expectedFailureAll(bugnumber="llvm.org/pr20282")
    def test_multiple_debuggers(self):
        env = {self.dylibPath: self.getLLDBLibraryEnvVal()}

        self.driver_exe = self.getBuildArtifact("multi-process-driver")
        self.buildDriver('multi-process-driver.cpp', self.driver_exe)
        self.addTearDownHook(lambda: os.remove(self.driver_exe))
        self.signBinary(self.driver_exe)

        self.inferior_exe = self.getBuildArtifact("testprog")
        self.buildDriver('testprog.cpp', self.inferior_exe)
        self.addTearDownHook(lambda: os.remove(self.inferior_exe))

# check_call will raise a CalledProcessError if multi-process-driver doesn't return
# exit code 0 to indicate success.  We can let this exception go - the test harness
# will recognize it as a test failure.

        if self.TraceOn():
            print("Running test %s" % self.driver_exe)
            check_call([self.driver_exe, self.inferior_exe], env=env)
        else:
            with open(os.devnull, 'w') as fnull:
                check_call([self.driver_exe, self.inferior_exe],
                           env=env, stdout=fnull, stderr=fnull)