How to use the setupmeta.listify function in setupmeta

def test_stringify():
    assert setupmeta.stringify((1, 2)) == '("1", "2")'
    assert setupmeta.stringify(["1", "2"]) == '["1", "2"]'
    assert setupmeta.stringify(("a b", "c d")) == '("a b", "c d")'

    assert setupmeta.stringify("""quoted ("double"+'single')""", quote=True) == """'quoted ("double"+'single')'"""
    assert setupmeta.stringify("""quoted 'single only'""", quote=True) == '''"quoted 'single only'"'''
    assert setupmeta.stringify("no 'foo'") == "no 'foo'"
    assert setupmeta.stringify("no 'foo'", quote=True) == '''"no 'foo'"'''

    assert setupmeta.stringify({"bar": "no 'foo'"}) == """{bar: no 'foo'}"""
    assert setupmeta.stringify({"bar": 'no "foo"'}) == """{bar: no "foo"}"""

    assert setupmeta.listify("a b") == ["a", "b"]
    assert sorted(setupmeta.listify(set("ab"))) == ["a", "b"]
    assert setupmeta.listify(("a", "b")) == ["a", "b"]

def test_listify():
    assert setupmeta.listify("a, b") == ["a,", "b"]
    assert setupmeta.listify("a,  b") == ["a,", "b"]
    assert setupmeta.listify("a, b", separator=",") == ["a", "b"]
    assert setupmeta.listify("a,, b", separator=",") == ["a", "b"]
    assert setupmeta.listify("a,\n b", separator=",") == ["a", "b"]
    assert setupmeta.listify("a\n b", separator=",") == ["a", "b"]

def test_listify():
    assert setupmeta.listify("a, b") == ["a,", "b"]
    assert setupmeta.listify("a,  b") == ["a,", "b"]
    assert setupmeta.listify("a, b", separator=",") == ["a", "b"]
    assert setupmeta.listify("a,, b", separator=",") == ["a", "b"]
    assert setupmeta.listify("a,\n b", separator=",") == ["a", "b"]
    assert setupmeta.listify("a\n b", separator=",") == ["a", "b"]

def test_stringify():
    assert setupmeta.stringify((1, 2)) == '("1", "2")'
    assert setupmeta.stringify(["1", "2"]) == '["1", "2"]'
    assert setupmeta.stringify(("a b", "c d")) == '("a b", "c d")'

    assert setupmeta.stringify("""quoted ("double"+'single')""", quote=True) == """'quoted ("double"+'single')'"""
    assert setupmeta.stringify("""quoted 'single only'""", quote=True) == '''"quoted 'single only'"'''
    assert setupmeta.stringify("no 'foo'") == "no 'foo'"
    assert setupmeta.stringify("no 'foo'", quote=True) == '''"no 'foo'"'''

    assert setupmeta.stringify({"bar": "no 'foo'"}) == """{bar: no 'foo'}"""
    assert setupmeta.stringify({"bar": 'no "foo"'}) == """{bar: no "foo"}"""

    assert setupmeta.listify("a b") == ["a", "b"]
    assert sorted(setupmeta.listify(set("ab"))) == ["a", "b"]
    assert setupmeta.listify(("a", "b")) == ["a", "b"]

def test_stringify():
    assert setupmeta.stringify((1, 2)) == '("1", "2")'
    assert setupmeta.stringify(["1", "2"]) == '["1", "2"]'
    assert setupmeta.stringify(("a b", "c d")) == '("a b", "c d")'

    assert setupmeta.stringify("""quoted ("double"+'single')""", quote=True) == """'quoted ("double"+'single')'"""
    assert setupmeta.stringify("""quoted 'single only'""", quote=True) == '''"quoted 'single only'"'''
    assert setupmeta.stringify("no 'foo'") == "no 'foo'"
    assert setupmeta.stringify("no 'foo'", quote=True) == '''"no 'foo'"'''

    assert setupmeta.stringify({"bar": "no 'foo'"}) == """{bar: no 'foo'}"""
    assert setupmeta.stringify({"bar": 'no "foo"'}) == """{bar: no "foo"}"""

    assert setupmeta.listify("a b") == ["a", "b"]
    assert sorted(setupmeta.listify(set("ab"))) == ["a", "b"]
    assert setupmeta.listify(("a", "b")) == ["a", "b"]

def test_listify():
    assert setupmeta.listify("a, b") == ["a,", "b"]
    assert setupmeta.listify("a,  b") == ["a,", "b"]
    assert setupmeta.listify("a, b", separator=",") == ["a", "b"]
    assert setupmeta.listify("a,, b", separator=",") == ["a", "b"]
    assert setupmeta.listify("a,\n b", separator=",") == ["a", "b"]
    assert setupmeta.listify("a\n b", separator=",") == ["a", "b"]

def test_listify():
    assert setupmeta.listify("a, b") == ["a,", "b"]
    assert setupmeta.listify("a,  b") == ["a,", "b"]
    assert setupmeta.listify("a, b", separator=",") == ["a", "b"]
    assert setupmeta.listify("a,, b", separator=",") == ["a", "b"]
    assert setupmeta.listify("a,\n b", separator=",") == ["a", "b"]
    assert setupmeta.listify("a\n b", separator=",") == ["a", "b"]

self.main_bits = self.bits(main)
        if isinstance(self.main_bits, list):
            self.bumpable = [b.text for b in self.main_bits if b.text in BUMPABLE]

        else:
            self.bumpable = []

        self.extra_bits = self.bits(extra)
        self.separator = separator
        self.branches = branches
        self.hook = hook
        if self.branches and hasattr(self.branches, "lstrip"):
            self.branches = self.branches.lstrip("(").rstrip(")")

        self.branches = setupmeta.listify(self.branches, separator=",")
        self.text = self.formatted(self.branches, self.main, self.separator, self.extra)
        if not self.main_bits:
            self.problem = "No versioning format specified"
            return

        all_bits = self.main_bits if isinstance(self.main_bits, list) else []
        if isinstance(self.extra_bits, list):
            all_bits = all_bits + self.extra_bits

        problems = [bit.problem for bit in all_bits if bit.problem]
        self.problem = "\n".join(problems) if problems else None

def add_definition(self, key, value, source, override=False):
        """
        :param str key: Key being defined
        :param value: Value to add (first value wins, unless override used)
        :param str source: Where this key/value came from
        :param bool override: If True, 'value' is forcibly taken
        """
        if key and (value or override):
            if key in ("keywords", "setup_requires"):
                value = listify(value, separator=",")
            definition = self.definitions.get(key)
            if definition is None:
                definition = Definition(key)
                self.definitions[key] = definition
            definition.add(value, source, override=override)