# encoding: utf-8
"""
Test lldb data formatter subsystem.
"""


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

from ObjCDataFormatterTestCase import ObjCDataFormatterTestCase


class ObjCDataFormatterKVO(ObjCDataFormatterTestCase):
    def test_kvo_with_run_command(self):
        """Test the behavior of formatters when KVO is in use."""
        self.build()
        self.target, process, thread, bkpt = lldbutil.run_to_source_breakpoint(
            self, "// Set break point at this line.", lldb.SBFileSpec("main.m", False)
        )

        self.runCmd("settings set target.prefer-dynamic-value no-dynamic-values")

        # The stop reason of the thread should be breakpoint.
        self.expect(
            "thread list",
            STOPPED_DUE_TO_BREAKPOINT,
            substrs=["stopped", "stop reason = breakpoint"],
        )

        # This is the function to remove the custom formats in order to have a
        # clean slate for the next test case.
        def cleanup():
            self.runCmd("type format clear", check=False)
            self.runCmd("type summary clear", check=False)
            self.runCmd("type synth clear", check=False)

        # Execute the cleanup function during test case tear down.
        self.addTearDownHook(cleanup)

        # as long as KVO is implemented by subclassing, this test should succeed
        # we should be able to dynamically figure out that the KVO implementor class
        # is a subclass of Molecule, and use the appropriate summary for it
        self.runCmd("type summary add -s JustAMoleculeHere Molecule")
        self.expect("frame variable molecule", substrs=["JustAMoleculeHere"])
        self.runCmd("next")
        self.expect("thread list", substrs=["stopped", "step over"])
        self.expect("frame variable molecule", substrs=["JustAMoleculeHere"])

        self.runCmd("next")
        # check that NSMutableDictionary's formatter is not confused when
        # dealing with a KVO'd dictionary
        self.expect(
            "frame variable newMutableDictionary",
            substrs=["(NSDictionary *) newMutableDictionary = ", " 21 key/value pairs"],
        )

        lldbutil.run_break_set_by_symbol(self, "-[Molecule setAtoms:]")

        self.runCmd("continue")
        self.expect("frame variable _cmd", substrs=["setAtoms:"])