How to use the pyroma.ratings.BaseTest function in pyroma

classifiers = data.get("classifiers", [])
        for classifier in classifiers:
            parts = [p.strip() for p in classifier.split("::")]
            if parts[0] == "Development Status":
                # license classifier exist
                return True
        return False

    def message(self):
        return (
            "Specifying a development status in the classifiers gives "
            "users a hint of how stable your software is."
        )


class SDist(BaseTest):
    weight = 100

    def test(self, data):
        if "_has_sdist" not in data:
            # We aren't checking on PyPI
            self.weight = 0
            return None
        return data["_has_sdist"]

    def message(self):
        return (
            "You have no source distribution on the Cheeseshop. "
            "Uploading the source distribution to the Cheeseshop ensures "
            "maximum availability of your package."
        )

u"Gorgonzola",
    u"Stilton",
    u"Brie",
    u"Comté",
    u"Jarlsberg",
    u"Philadelphia",
    u"Cottage Cheese",
    u"Your cheese is so fresh most people think it's a cream: Mascarpone",
]


class BaseTest(object):
    fatal = False


class FieldTest(BaseTest):
    """Tests that a specific field is in the data and is not empty or False"""

    def test(self, data):
        return bool(data.get(self.field))

    def message(self):
        return ("Your package does not have %s data" % self.field) + (
            self.fatal and "!" or "."
        )


class Name(FieldTest):
    fatal = True
    field = "name"

def test(self, data):
        if "_has_sdist" not in data:
            # We aren't checking on PyPI
            self.weight = 0
            return None
        return data["_has_sdist"]

    def message(self):
        return (
            "You have no source distribution on the Cheeseshop. "
            "Uploading the source distribution to the Cheeseshop ensures "
            "maximum availability of your package."
        )


class ValidREST(BaseTest):

    weight = 50

    def test(self, data):
        content_type = data.get("long_description_content_type", None)
        if content_type in ("text/plain", "text/markdown"):
            # These can't fail. Markdown will just assume everything
            # it doesn't understand is plain text.
            return True

        # This should be ReStructuredText
        source = data.get("long_description", "")
        stream = io.StringIO()
        settings = {"warning_stream": stream}

        try:

if license in CODE_LICENSES:
            if not CODE_LICENSES[license].intersection(licenses):
                self._message = (
                    "The license '%s' specified is not listed in "
                    "your classifiers." % license
                )
                return False

        return True

    def message(self):
        return self._message


class DevStatusClassifier(BaseTest):
    weight = 20

    def test(self, data):
        classifiers = data.get("classifiers", [])
        for classifier in classifiers:
            parts = [p.strip() for p in classifier.split("::")]
            if parts[0] == "Development Status":
                # license classifier exist
                return True
        return False

    def message(self):
        return (
            "Specifying a development status in the classifiers gives "
            "users a hint of how stable your software is."
        )

version = data.get("version")
        self.pep386 = False
        if PEP386_RE.search(str(version)) is not None:
            # Matches the old PEP386
            self.weight = 10
            self.pep386 = True
        match = PEP440_RE.search(str(version))
        return match is not None

    def message(self):
        if self.pep386:
            return "The package's version number complies only with PEP-386 and not PEP-440."
        return "The package's version number does not comply with PEP-386 or PEP-440."


class Description(BaseTest):
    weight = 100

    def test(self, data):
        description = data.get("description")
        if not description:
            # No description at all. That's fatal.
            self.fatal = True
            return False
        self.fatal = False
        return len(description) > 10

    def message(self):
        if self.fatal:
            return "The package had no description!"
        else:
            return "The package's description should be longer than " "10 characters."

def test(self, data):
        long_description = data.get("long_description", "")
        if not isinstance(long_description, stringtypes):
            long_description = ""
        return len(long_description) > 100

    def message(self):
        return "The package's long_description is quite short."


class Classifiers(FieldTest):
    weight = 100
    field = "classifiers"


class ClassifierVerification(BaseTest):
    weight = 20

    def test(self, data):
        self._incorrect = []
        classifiers = data.get("classifiers", [])
        for classifier in classifiers:
            if classifier not in CLASSIFIERS:
                self._incorrect.append(classifier)
        if self._incorrect:
            return False
        return True

    def message(self):
        err = "\n".join(self._incorrect)
        return "Some of your classifiers are not standard classifiers:\n" + err

class Url(BaseTest):
    weight = 20

    def test(self, data):
        return bool(data.get("url")) or bool(data.get("project_urls"))

    def message(self):
        return (
            "Your package should have a 'url' field with a link to the "
            "project home page, or a 'project_urls' field, with a "
            "dictionary of links, or both."
        )


class Licensing(BaseTest):
    weight = 50

    def test(self, data):
        license = data.get("license")
        classifiers = data.get("classifiers", [])
        licenses = set()
        for classifier in classifiers:
            parts = [p.strip() for p in classifier.split("::")]
            if parts[0] == "License":
                # license classifier exist
                licenses.add(classifier)

        if not license and not licenses:
            self._message = (
                "Your package does neither have a license field "
                "nor any license classifiers."

source=source, writer_name="html4css1", settings_overrides=settings
            )
        except SystemMessage as e:
            self._message = e.args[0]
        errors = stream.getvalue().strip()
        if not errors:
            return True

        self._message = "\n" + errors
        return False

    def message(self):
        return "Your long_description is not valid ReST: " + self._message


class BusFactor(BaseTest):
    def test(self, data):
        if "_owners" not in data:
            self.weight = 0
            return None

        if len(data.get("_owners", [])) == 1:
            self.weight = 100
            return False

        if len(data.get("_owners", [])) == 2:
            self.weight = 50
            return False

        # Three or more, that's good.
        self.weight = 100
        return True

class Keywords(FieldTest):
    weight = 20
    field = "keywords"


class Author(FieldTest):
    weight = 100
    field = "author"


class AuthorEmail(FieldTest):
    weight = 100
    field = "author_email"


class Url(BaseTest):
    weight = 20

    def test(self, data):
        return bool(data.get("url")) or bool(data.get("project_urls"))

    def message(self):
        return (
            "Your package should have a 'url' field with a link to the "
            "project home page, or a 'project_urls' field, with a "
            "dictionary of links, or both."
        )


class Licensing(BaseTest):
    weight = 50

return ("Your package does not have %s data" % self.field) + (
            self.fatal and "!" or "."
        )


class Name(FieldTest):
    fatal = True
    field = "name"


class Version(FieldTest):
    fatal = True
    field = "version"


class VersionIsString(BaseTest):
    weight = 50

    def test(self, data):
        # Check that the version is a string
        version = data.get("version")
        return isinstance(version, stringtypes)

    def message(self):
        return "The version number should be a string."


PEP386_RE = re.compile(
    r"""
    ^
    (?P\d+\.\d+)          # minimum 'N.N'
    (?P(?:\.\d+)*)   # any number of extra '.N' segments