"""Test printing ObjC objects that use unbacked properties - so that the static ivar offsets are incorrect."""

from __future__ import print_function


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


class TestObjCIvarStripped(TestBase):

    mydir = TestBase.compute_mydir(__file__)

    def setUp(self):
        # Call super's setUp().
        TestBase.setUp(self)
        # Find the line numbers to break inside main().
        self.main_source = "main.m"
        self.stop_line = line_number(
            self.main_source, '// Set breakpoint here.')

    @skipUnlessDarwin
    @skipIf(
        debug_info=no_match("dsym"),
        bugnumber="This test requires a stripped binary and a dSYM")
    @add_test_categories(['pyapi'])
    def test_with_python_api(self):
        """Test that we can find stripped Objective-C ivars in the runtime"""
        self.build()
        exe = self.getBuildArtifact("a.out.stripped")

        target = self.dbg.CreateTarget(exe)
        self.assertTrue(target, VALID_TARGET)

        self.dbg.HandleCommand("add-dsym "+self.getBuildArtifact("a.out.dSYM"))

        breakpoint = target.BreakpointCreateByLocation(
            self.main_source, self.stop_line)
        self.assertTrue(
            breakpoint.IsValid() and breakpoint.GetNumLocations() > 0,
            VALID_BREAKPOINT)

        process = target.LaunchSimple(
            None, None, self.get_process_working_directory())
        self.assertTrue(process, "Created a process.")
        self.assertTrue(
            process.GetState() == lldb.eStateStopped,
            "Stopped it too.")

        thread_list = lldbutil.get_threads_stopped_at_breakpoint(
            process, breakpoint)
        self.assertTrue(len(thread_list) == 1)
        thread = thread_list[0]

        frame = thread.GetFrameAtIndex(0)
        self.assertTrue(frame, "frame 0 is valid")

        # Test the expression for mc->_foo

        error = lldb.SBError()

        ivar = frame.EvaluateExpression("(mc->_foo)")
        self.assertTrue(ivar, "Got result for mc->_foo")
        ivar_value = ivar.GetValueAsSigned(error)
        self.assertTrue(error.Success())
        self.assertTrue(ivar_value == 3)
