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<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>C///</title>
</head>
# -*- coding: utf-8 -*-

import pytest

from cerberus import errors, Validator, SchemaError, DocumentError
from cerberus.tests.conftest import sample_schema


def assert_exception(exception, document={}, schema=None, validator=None,
                     msg=None):
    """ Tests whether a specific exception is raised. Optionally also tests
        whether the exception message is as expected. """
    if validator is None:
        validator = Validator(sample_schema)
    if msg is None:
        with pytest.raises(exception) as excinfo:
            validator(document, schema)
    else:
        with pytest.raises(exception, message=msg) as excinfo:  # noqa: F841
            validator(document, schema)


def assert_schema_error(*args):
    """ Tests whether a validation raises an exception due to a malformed
        schema. """
    assert_exception(SchemaError, *args)


def assert_document_error(*args):
    """ Tests whether a validation raises an exception due to a malformed
        document. """
    assert_exception(DocumentError, *args)


def assert_fail(document, schema=None, validator=None, update=False,
                error=None, errors=None, child_errors=None):
    """ Tests whether a validation fails. """
    if validator is None:
        validator = Validator(sample_schema)
    result = validator(document, schema, update)
    assert isinstance(result, bool)
    assert not result

    actual_errors = validator._errors

    assert not (error is not None and errors is not None)
    assert not (errors is not None and child_errors is not None)
    assert not (child_errors is not None and error is None)
    if error is not None:
        assert len(actual_errors) == 1
        assert_has_error(actual_errors, *error)

        if child_errors is not None:
            assert len(actual_errors[0].child_errors) == len(child_errors)
            assert_has_errors(actual_errors[0].child_errors, child_errors)

    elif errors is not None:
        assert len(actual_errors) == len(errors)
        assert_has_errors(actual_errors, errors)

    return actual_errors


def assert_success(document, schema=None, validator=None, update=False):
    """ Tests whether a validation succeeds. """
    if validator is None:
        validator = Validator(sample_schema)
    result = validator(document, schema, update)
    assert isinstance(result, bool)
    if not result:
        raise AssertionError(validator.errors)


def assert_has_error(_errors, d_path, s_path, error_def, constraint, info=()):
    if not isinstance(d_path, tuple):
        d_path = (d_path,)
    if not isinstance(info, tuple):
        info = (info,)

    assert isinstance(_errors, errors.ErrorList)

    for i, error in enumerate(_errors):
        assert isinstance(error, errors.ValidationError)
        try: