# Copyright (c) 2016 The Johns Hopkins University/Applied Physics Laboratory
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.

import testtools

from kmip.core import enums
from kmip.core.messages import contents
from kmip.services.server import policy


class TestAttributePolicy(testtools.TestCase):
    """
    A test engine for AttributePolicy.
    """

    def setUp(self):
        super(TestAttributePolicy, self).setUp()

    def tearDown(self):
        super(TestAttributePolicy, self).tearDown()

    def test_init(self):
        """
        Test that an AttributePolicy can be built without any errors.
        """
        policy.AttributePolicy(contents.ProtocolVersion.create(1, 0))

    def test_is_attribute_supported(self):
        """
        Test that is_attribute_supported returns the expected results in all
        cases.
        """
        rules = policy.AttributePolicy(contents.ProtocolVersion.create(1, 0))
        attribute_a = 'Unique Identifier'
        attribute_b = 'Certificate Length'
        attribute_c = 'invalid'

        result = rules.is_attribute_supported(attribute_a)
        self.assertTrue(result)

        result = rules.is_attribute_supported(attribute_b)
        self.assertFalse(result)

        result = rules.is_attribute_supported(attribute_c)
        self.assertFalse(result)

    def test_is_attribute_deprecated(self):
        """
        Test that is_attribute_deprecated returns the expected results in all
        cases.
        """
        rules = policy.AttributePolicy(contents.ProtocolVersion.create(1, 0))
        attribute_a = 'Name'
        attribute_b = 'Certificate Subject'

        result = rules.is_attribute_deprecated(attribute_a)
        self.assertFalse(result)

        result = rules.is_attribute_deprecated(attribute_b)
        self.assertFalse(result)

        rules = policy.AttributePolicy(contents.ProtocolVersion.create(1, 1))

        result = rules.is_attribute_deprecated(attribute_b)
        self.assertTrue(result)

    def test_is_attribute_applicable_to_object_type(self):
        """
        Test that is_attribute_applicable_to_object_type returns the
        expected results in all cases.
        """
        rules = policy.AttributePolicy(contents.ProtocolVersion.create(1, 0))
        attribute = 'Cryptographic Algorithm'
        object_type_a = enums.ObjectType.SYMMETRIC_KEY
        object_type_b = enums.ObjectType.OPAQUE_DATA

        result = rules.is_attribute_applicable_to_object_type(
            attribute,
            object_type_a
        )
        self.assertTrue(result)

        result = rules.is_attribute_applicable_to_object_type(
            attribute,
            object_type_b
        )
        self.assertFalse(result)

    def test_is_attribute_multivalued(self):
        """
        Test that is_attribute_multivalued returns the expected results in
        all cases.
        """
        rules = policy.AttributePolicy(contents.ProtocolVersion.create(1, 0))
        attribute_a = 'Object Type'
        attribute_b = 'Link'

        result = rules.is_attribute_multivalued(attribute_a)
        self.assertFalse(result)

        result = rules.is_attribute_multivalued(attribute_b)
        self.assertTrue(result)

    def test_get_all_attribute_names(self):
        """
        Test that get_all_attribute_names returns a complete list of the
        names of all spec-defined attributes.
        """
        rules = policy.AttributePolicy(contents.ProtocolVersion.create(1, 0))
        attribute_names = [
            'Unique Identifier',
            'Name',
            'Object Type',
            'Cryptographic Algorithm',
            'Cryptographic Length',
            'Cryptographic Parameters',
            'Cryptographic Domain Parameters',
            'Certificate Type',
            'Certificate Length',
            'X.509 Certificate Identifier',
            'X.509 Certificate Subject',
            'X.509 Certificate Issuer',
            'Certificate Identifier',
            'Certificate Subject',
            'Certificate Issuer',
            'Digital Signature Algorithm',
            'Digest',
            'Operation Policy Name',
            'Cryptographic Usage Mask',
            'Lease Time',
            'Usage Limits',
            'State',
            'Initial Date',
            'Activation Date',
            'Process Start Date',
            'Protect Stop Date',
            'Deactivation Date',
            'Destroy Date',
            'Compromise Occurrence Date',
            'Compromise Date',
            'Revocation Reason',
            'Archive Date',
            'Object Group',
            'Fresh',
            'Link',
            'Application Specific Information',
            'Contact Information',
            'Last Change Date',
            'Custom Attribute'
        ]

        result = rules.get_all_attribute_names()

        self.assertEqual(len(attribute_names), len(result))
        for attribute_name in attribute_names:
            self.assertIn(attribute_name, result)