Inline method refactoring passes the wrong parameter to the inlined function body

[jonhnanthan]

Inline method refactoring passes the wrong parameter to the inlined function body

Steps to reproduce the behavior:

1. Code before refactoring:

structure

-- en
---- __init.py__
---- parsers.py
-- test
---- __init.py__
---- test.py

en.__init.py__:

class Parser(object):
    def __init__(self, lexicon={}, default=("NN", "NNP", "CD"), language=None):
        self.lexicon = lexicon
        self.default = default
        self.language = language

    def parse(self, s, tokenize=True, tags=True, chunks=True, relations=False, lemmata=False, encoding="utf-8", **kwargs):
        pass


parser = Parser(
    default=("NN", "NNP", "CD"),
    language="en"
)


def parse(s, *args, **kwargs):
    return parser.parse(s, *args, **kwargs)

en.parsers.py:

from abc import abstractmethod
from en import parse as pattern_parse


class BaseParser(object):
    @abstractmethod
    def parse(self, text):
        return


class PatternParser(BaseParser):

    def parse(self, text):
        return pattern_parse(text)

test.test.py:

import unittest

from en import parse as pattern_parse
import en.parsers as parsers


class TestPatternParser(unittest.TestCase):

    def setUp(self):
        self.parser = PatternParser()
        self.text = "And now for something completely different."

    def test_parse(self):
        self.assertEqual(self.parser.parse(self.text), pattern_parse(self.text))

2. Apply the Inline Method refactoring to 'PatternParser.parse'

3. Expected code after refactoring:

en.__init.py__:

class Parser(object):
    def __init__(self, lexicon={}, default=("NN", "NNP", "CD"), language=None):
        self.lexicon = lexicon
        self.default = default
        self.language = language

    def parse(self, s, tokenize=True, tags=True, chunks=True, relations=False, lemmata=False, encoding="utf-8", **kwargs):
        pass


parser = Parser(
    default=("NN", "NNP", "CD"),
    language="en"
)


def parse(s, *args, **kwargs):
    return parser.parse(s, *args, **kwargs)

en.parsers.py:

from abc import abstractmethod
from en import parse as pattern_parse


class BaseParser(object):
    @abstractmethod
    def parse(self, text):
        return


class PatternParser(BaseParser):

    pass

test.test.py:

import unittest

from en import parse as pattern_parse
import en.parsers as parsers


class TestPatternParser(unittest.TestCase):

    def setUp(self):
        self.parser = PatternParser()
        self.text = "And now for something completely different."

    def test_parse(self):
        self.assertEqual(pattern_parse(self.text), pattern_parse(self.text))

The transformation changes the attribute that is passed to the original function.
The result is: self.assertEqual(pattern_parse(__0__self.parser.text), pattern_parse(self.text))
Causing test fail