pydantic/tests/test_utils.py

import os
from enum import Enum
from typing import Union

import pytest

from pydantic.utils import display_as_type, import_string, lenient_issubclass, make_dsn, validate_email

try:
    import email_validator
except ImportError:
    email_validator = None


@pytest.mark.skipif(not email_validator, reason='email_validator not installed')
@pytest.mark.parametrize(
    'value,name,email',
    [
        ('foobar@example.com', 'foobar', 'foobar@example.com'),
        ('s@muelcolvin.com', 's', 's@muelcolvin.com'),
        ('Samuel Colvin <s@muelcolvin.com>', 'Samuel Colvin', 's@muelcolvin.com'),
        ('foobar <foobar@example.com>', 'foobar', 'foobar@example.com'),
        (' foo.bar@example.com', 'foo.bar', 'foo.bar@example.com'),
        ('foo.bar@example.com ', 'foo.bar', 'foo.bar@example.com'),
        ('foo BAR <foobar@example.com >', 'foo BAR', 'foobar@example.com'),
        ('FOO bar   <foobar@example.com> ', 'FOO bar', 'foobar@example.com'),
        ('<FOOBAR@example.com> ', 'FOOBAR', 'foobar@example.com'),
        ('ñoñó@example.com', 'ñoñó', 'ñoñó@example.com'),
        ('我買@example.com', '我買', '我買@example.com'),
        ('甲斐黒川日本@example.com', '甲斐黒川日本', '甲斐黒川日本@example.com'),
        (
            'чебурашкаящик-с-апельсинами.рф@example.com',
            'чебурашкаящик-с-апельсинами.рф',
            'чебурашкаящик-с-апельсинами.рф@example.com',
        ),
        ('उदाहरण.परीक्ष@domain.with.idn.tld', 'उदाहरण.परीक्ष', 'उदाहरण.परीक्ष@domain.with.idn.tld'),
        ('foo.bar@example.com', 'foo.bar', 'foo.bar@example.com'),
        ('foo.bar@exam-ple.com ', 'foo.bar', 'foo.bar@exam-ple.com'),
        ('ιωάννης@εεττ.gr', 'ιωάννης', 'ιωάννης@εεττ.gr'),
    ],
)
def test_address_valid(value, name, email):
    assert validate_email(value) == (name, email)


@pytest.mark.skipif(not email_validator, reason='email_validator not installed')
@pytest.mark.parametrize(
    'value',
    [
        'f oo.bar@example.com ',
        'foo.bar@exam\nple.com ',
        'foobar',
        'foobar <foobar@example.com',
        '@example.com',
        'foobar@.example.com',
        'foobar@.com',
        'foo bar@example.com',
        'foo@bar@example.com',
        '\n@example.com',
        '\r@example.com',
        '\f@example.com',
        ' @example.com',
        '\u0020@example.com',
        '\u001f@example.com',
        '"@example.com',
        '\"@example.com',
        ',@example.com',
        'foobar <foobar<@example.com>',
    ],
)
def test_address_invalid(value):
    with pytest.raises(ValueError):
        validate_email(value)


@pytest.mark.skipif(email_validator, reason='email_validator is installed')
def test_email_validator_not_installed():
    with pytest.raises(ImportError):
        validate_email('s@muelcolvin.com')


def test_empty_dsn():
    assert make_dsn(driver='foobar') == 'foobar://'


def test_dsn_odd_user():
    assert make_dsn(driver='foobar', user='foo@bar') == 'foobar://foo%40bar@'


def test_import_module():
    assert import_string('os.path') == os.path


def test_import_module_invalid():
    with pytest.raises(ImportError) as exc_info:
        import_string('xx')
    assert exc_info.value.args[0] == '"xx" doesn\'t look like a module path'


def test_import_no_attr():
    with pytest.raises(ImportError) as exc_info:
        import_string('os.foobar')
    assert exc_info.value.args[0] == 'Module "os" does not define a "foobar" attribute'


@pytest.mark.parametrize(
    'value,expected', ((str, 'str'), ('string', 'str'), (Union[str, int], 'typing.Union[str, int]'))
)
def test_display_as_type(value, expected):
    assert display_as_type(value) == expected


def test_display_as_type_enum():
    class SubField(Enum):
        a = 1
        b = 'b'

    displayed = display_as_type(SubField)
    assert displayed == 'enum'


def test_display_as_type_enum_int():
    class SubField(int, Enum):
        a = 1
        b = 2

    displayed = display_as_type(SubField)
    assert displayed == 'int'


def test_display_as_type_enum_str():
    class SubField(str, Enum):
        a = 'a'
        b = 'b'

    displayed = display_as_type(SubField)
    assert displayed == 'str'


def test_lenient_issubclass():
    class A(str):
        pass

    assert lenient_issubclass(A, str) is True


def test_lenient_issubclass_is_lenient():
    assert lenient_issubclass('a', 'a') is False