Properly skipped yaml tests when not installed

from datetime import datetime

import unittest

from xml.dom import minidom

try:

    import yaml

    HAS_YAML = True

except ImportError:

    HAS_YAML = False

from django.conf import settings

from django.core import serializers

        }

    }]"""

try:

    import yaml

except ImportError:

    pass

else:

@unittest.skipUnless(HAS_YAML, "No yaml library detected")

class YamlSerializerTestCase(SerializersTestBase, TestCase):

    serializer_name = "yaml"

    fwd_ref_str = """- fields:

                    ret_list.append(str(field_value))

        return ret_list

@unittest.skipUnless(HAS_YAML, "No yaml library detected")

class YamlSerializerTransactionTestCase(SerializersTransactionTestBase, TransactionTestCase):

    serializer_name = "yaml"

    fwd_ref_str = """- fields: