from unittest import TestCase
import importlib
import subprocess
import sys

from jsonschema import FormatChecker, validators


class TestDeprecations(TestCase):
    def test_version(self):
        """
        As of v4.0.0, __version__ is deprecated in favor of importlib.metadata.
        """

        with self.assertWarns(DeprecationWarning) as w:
            from jsonschema import __version__  # noqa

        self.assertEqual(w.filename, __file__)
        self.assertTrue(
            str(w.warning).startswith(
                "Accessing jsonschema.__version__ is deprecated",
            ),
        )

    def test_validators_ErrorTree(self):
        """
        As of v4.0.0, importing ErrorTree from jsonschema.validators is
        deprecated in favor of doing so from jsonschema.exceptions.
        """

        with self.assertWarns(DeprecationWarning) as w:
            from jsonschema.validators import ErrorTree  # noqa

        self.assertEqual(w.filename, __file__)
        self.assertTrue(
            str(w.warning).startswith(
                "Importing ErrorTree from jsonschema.validators is deprecated",
            ),
        )

    def test_validators_validators(self):
        """
        As of v4.0.0, accessing jsonschema.validators.validators is
        deprecated.
        """

        with self.assertWarns(DeprecationWarning) as w:
            value = validators.validators
        self.assertEqual(value, validators._VALIDATORS)

        self.assertEqual(w.filename, __file__)
        self.assertTrue(
            str(w.warning).startswith(
                "Accessing jsonschema.validators.validators is deprecated",
            ),
        )

    def test_validators_meta_schemas(self):
        """
        As of v4.0.0, accessing jsonschema.validators.meta_schemas is
        deprecated.
        """

        with self.assertWarns(DeprecationWarning) as w:
            value = validators.meta_schemas
        self.assertEqual(value, validators._META_SCHEMAS)

        self.assertEqual(w.filename, __file__)
        self.assertTrue(
            str(w.warning).startswith(
                "Accessing jsonschema.validators.meta_schemas is deprecated",
            ),
        )

    def test_RefResolver_in_scope(self):
        """
        As of v4.0.0, RefResolver.in_scope is deprecated.
        """

        resolver = validators.RefResolver.from_schema({})
        with self.assertWarns(DeprecationWarning) as w:
            with resolver.in_scope("foo"):
                pass

        self.assertEqual(w.filename, __file__)
        self.assertTrue(
            str(w.warning).startswith(
                "jsonschema.RefResolver.in_scope is deprecated ",
            ),
        )

    def test_Validator_is_valid_two_arguments(self):
        """
        As of v4.0.0, calling is_valid with two arguments (to provide a
        different schema) is deprecated.
        """

        validator = validators.Draft7Validator({})
        with self.assertWarns(DeprecationWarning) as w:
            result = validator.is_valid("foo", {"type": "number"})

        self.assertFalse(result)
        self.assertEqual(w.filename, __file__)
        self.assertTrue(
            str(w.warning).startswith(
                "Passing a schema to Validator.is_valid is deprecated ",
            ),
        )

    def test_Validator_iter_errors_two_arguments(self):
        """
        As of v4.0.0, calling iter_errors with two arguments (to provide a
        different schema) is deprecated.
        """

        validator = validators.Draft7Validator({})
        with self.assertWarns(DeprecationWarning) as w:
            error, = validator.iter_errors("foo", {"type": "number"})

        self.assertEqual(error.validator, "type")
        self.assertEqual(w.filename, __file__)
        self.assertTrue(
            str(w.warning).startswith(
                "Passing a schema to Validator.iter_errors is deprecated ",
            ),
        )

    def test_Validator_subclassing(self):
        """
        As of v4.12.0, subclassing a validator class produces an explicit
        deprecation warning.

        This was never intended to be public API (and some comments over the
        years in issues said so, but obviously that's not a great way to make
        sure it's followed).

        A future version will explicitly raise an error.
        """

        with self.assertWarns(DeprecationWarning) as w:
            class Subclass(validators.Draft202012Validator):
                pass

        self.assertEqual(w.filename, __file__)
        self.assertTrue(
            str(w.warning).startswith("Subclassing validator classes is "),
        )

        with self.assertWarns(DeprecationWarning) as w:
            class AnotherSubclass(validators.create(meta_schema={})):
                pass

    def test_FormatChecker_cls_checks(self):
        """
        As of v4.14.0, FormatChecker.cls_checks is deprecated without
        replacement.
        """

        self.addCleanup(FormatChecker.checkers.pop, "boom", None)

        with self.assertWarns(DeprecationWarning) as w:
            FormatChecker.cls_checks("boom")

        self.assertEqual(w.filename, __file__)
        self.assertTrue(
            str(w.warning).startswith("FormatChecker.cls_checks "),
        )

    def test_draftN_format_checker(self):
        """
        As of v4.16.0, accessing jsonschema.draftn_format_checker is deprecated
        in favor of Validator.FORMAT_CHECKER.
        """

        with self.assertWarns(DeprecationWarning) as w:
            from jsonschema import draft202012_format_checker  # noqa

        self.assertIs(
            draft202012_format_checker,
            validators.Draft202012Validator.FORMAT_CHECKER,
        )
        self.assertEqual(w.filename, __file__)
        self.assertTrue(
            str(w.warning).startswith(
                "Accessing jsonschema.draft202012_format_checker is ",
            ),
            msg=w.warning,
        )

        with self.assertWarns(DeprecationWarning) as w:
            from jsonschema import draft201909_format_checker  # noqa

        self.assertIs(
            draft201909_format_checker,
            validators.Draft201909Validator.FORMAT_CHECKER,
        )
        self.assertEqual(w.filename, __file__)
        self.assertTrue(
            str(w.warning).startswith(
                "Accessing jsonschema.draft201909_format_checker is ",
            ),
            msg=w.warning,
        )

        with self.assertWarns(DeprecationWarning) as w:
            from jsonschema import draft7_format_checker  # noqa

        self.assertIs(
            draft7_format_checker,
            validators.Draft7Validator.FORMAT_CHECKER,
        )
        self.assertEqual(w.filename, __file__)
        self.assertTrue(
            str(w.warning).startswith(
                "Accessing jsonschema.draft7_format_checker is ",
            ),
            msg=w.warning,
        )

        with self.assertWarns(DeprecationWarning) as w:
            from jsonschema import draft6_format_checker  # noqa

        self.assertIs(
            draft6_format_checker,
            validators.Draft6Validator.FORMAT_CHECKER,
        )
        self.assertEqual(w.filename, __file__)
        self.assertTrue(
            str(w.warning).startswith(
                "Accessing jsonschema.draft6_format_checker is ",
            ),
            msg=w.warning,
        )

        with self.assertWarns(DeprecationWarning) as w:
            from jsonschema import draft4_format_checker  # noqa

        self.assertIs(
            draft4_format_checker,
            validators.Draft4Validator.FORMAT_CHECKER,
        )
        self.assertEqual(w.filename, __file__)
        self.assertTrue(
            str(w.warning).startswith(
                "Accessing jsonschema.draft4_format_checker is ",
            ),
            msg=w.warning,
        )

        with self.assertWarns(DeprecationWarning) as w:
            from jsonschema import draft3_format_checker  # noqa

        self.assertIs(
            draft3_format_checker,
            validators.Draft3Validator.FORMAT_CHECKER,
        )
        self.assertEqual(w.filename, __file__)
        self.assertTrue(
            str(w.warning).startswith(
                "Accessing jsonschema.draft3_format_checker is ",
            ),
            msg=w.warning,
        )

        with self.assertRaises(ImportError):
            from jsonschema import draft1234_format_checker  # noqa

    def test_import_cli(self):
        """
        As of v4.17.0, importing jsonschema.cli is deprecated.
        """

        with self.assertWarns(DeprecationWarning) as w:
            import jsonschema.cli
            importlib.reload(jsonschema.cli)

        self.assertEqual(w.filename, importlib.__file__)
        self.assertTrue(
            str(w.warning).startswith(
                "The jsonschema CLI is deprecated and will be removed ",
            ),
        )

    def test_cli(self):
        """
        As of v4.17.0, the jsonschema CLI is deprecated.
        """

        process = subprocess.run(
            [sys.executable, "-m", "jsonschema"],
            capture_output=True,
        )
        self.assertIn(b"The jsonschema CLI is deprecated ", process.stderr)