CLOUDSTACK-8636: Verify failure of creation of Custom disk offering with disksize parameter

- Clear disk offering in tearDown() class if gets created

Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>

This closes #592

test/integration/testpaths/testpath_custom_disk_offering.py

@@ -0,0 +1,89 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you 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.
+""" Test case for Create Custom DiskOffering with size Test Path
+"""
+
+from nose.plugins.attrib import attr
+from marvin.cloudstackTestCase import cloudstackTestCase
+from marvin.cloudstackAPI import (createDiskOffering, deleteDiskOffering)
+from marvin.lib.utils import (cleanup_resources)
+from marvin.lib.common import (get_domain,
+                               get_zone,
+                               )
+
+
+class TestCustomDiskOfferingWithSize(cloudstackTestCase):
+
+    @classmethod
+    def setUpClass(cls):
+        testClient = super(
+            TestCustomDiskOfferingWithSize,
+            cls).getClsTestClient()
+        cls.apiclient = testClient.getApiClient()
+        cls.testdata = testClient.getParsedTestDataConfig()
+        cls.hypervisor = cls.testClient.getHypervisorInfo()
+
+        # Get Zone, Domain and templates
+        cls.domain = get_domain(cls.apiclient)
+        cls.zone = get_zone(cls.apiclient, testClient.getZoneForTests())
+        cls._cleanup = []
+
+        cls.tearDownClass()
+
+        return
+
+    @classmethod
+    def tearDownClass(cls):
+        try:
+            cleanup_resources(cls.apiclient, cls._cleanup)
+        except Exception as e:
+            raise Exception("Warning: Exception during cleanup : %s" % e)
+
+    def setUp(self):
+        self.apiclient = self.testClient.getApiClient()
+        self.dbclient = self.testClient.getDbConnection()
+        self.cleanup = []
+
+    def tearDown(self):
+        try:
+            if hasattr(self, 'disk_offering'):
+                cmd = deleteDiskOffering.deleteDiskOfferingCmd()
+                cmd.id = self.disk_offering.id
+                self.apiclient.deleteDiskOffering(cmd)
+
+            cleanup_resources(self.apiclient, self.cleanup)
+        except Exception as e:
+            raise Exception("Warning: Exception during cleanup : %s" % e)
+        return
+
+    @attr(tags=["basic", "advanced"], required_hardware="false")
+    def test_create_custom_disk_offering_with_size(self):
+        """ Create custom disk offerign with size
+            1.   Create custom disk offering with size.
+            2.   Should not allow to create custom disk offering
+                 with size mentioned.(Exception should be raised)
+        """
+
+        with self.assertRaises(Exception):
+            cmd = createDiskOffering.createDiskOfferingCmd()
+            cmd.displaytext = "Custom Disk Offering"
+            cmd.name = "Custom Disk Offering"
+            cmd.customized = True
+            cmd.disksize = 2
+            self.disk_offering = self.apiclient.createDiskOffering(cmd)
+
+        return