rackspace create stack op and unit test
diff --git a/rackspace/orchestration/v1/stacks/delegate_test.go b/rackspace/orchestration/v1/stacks/delegate_test.go
new file mode 100644
index 0000000..b2693b2
--- /dev/null
+++ b/rackspace/orchestration/v1/stacks/delegate_test.go
@@ -0,0 +1,172 @@
+package stacks
+
+import (
+	"testing"
+
+	os "github.com/rackspace/gophercloud/openstack/orchestration/v1/stacks"
+	th "github.com/rackspace/gophercloud/testhelper"
+	fake "github.com/rackspace/gophercloud/testhelper/client"
+)
+
+func TestCreateStack(t *testing.T) {
+	th.SetupHTTP()
+	defer th.TeardownHTTP()
+	os.HandleCreateSuccessfully(t, CreateOutput)
+
+	createOpts := os.CreateOpts{
+		Name:    "stackcreated",
+		Timeout: 60,
+		Template: `{
+      "outputs": {
+        "db_host": {
+          "value": {
+            "get_attr": [
+            "db",
+            "hostname"
+            ]
+          }
+        }
+      },
+      "heat_template_version": "2014-10-16",
+      "description": "HEAT template for creating a Cloud Database.\n",
+      "parameters": {
+        "db_name": {
+          "default": "wordpress",
+          "type": "string",
+          "description": "the name for the database",
+          "constraints": [
+          {
+            "length": {
+              "max": 64,
+              "min": 1
+            },
+            "description": "must be between 1 and 64 characters"
+          },
+          {
+            "allowed_pattern": "[a-zA-Z][a-zA-Z0-9]*",
+            "description": "must begin with a letter and contain only alphanumeric characters."
+          }
+          ]
+        },
+        "db_instance_name": {
+          "default": "Cloud_DB",
+          "type": "string",
+          "description": "the database instance name"
+        },
+        "db_username": {
+          "default": "admin",
+          "hidden": true,
+          "type": "string",
+          "description": "database admin account username",
+          "constraints": [
+          {
+            "length": {
+              "max": 16,
+              "min": 1
+                },
+              "description": "must be between 1 and 16 characters"
+            },
+            {
+              "allowed_pattern": "[a-zA-Z][a-zA-Z0-9]*",
+              "description": "must begin with a letter and contain only alphanumeric characters."
+            }
+          ]
+          },
+          "db_volume_size": {
+            "default": 30,
+            "type": "number",
+            "description": "database volume size (in GB)",
+            "constraints": [
+            {
+              "range": {
+                "max": 1024,
+                "min": 1
+              },
+              "description": "must be between 1 and 1024 GB"
+            }
+            ]
+          },
+          "db_flavor": {
+            "default": "1GB Instance",
+            "type": "string",
+            "description": "database instance size",
+            "constraints": [
+            {
+              "description": "must be a valid cloud database flavor",
+              "allowed_values": [
+              "1GB Instance",
+              "2GB Instance",
+              "4GB Instance",
+              "8GB Instance",
+              "16GB Instance"
+              ]
+            }
+            ]
+          },
+        "db_password": {
+          "default": "admin",
+          "hidden": true,
+          "type": "string",
+          "description": "database admin account password",
+          "constraints": [
+          {
+            "length": {
+              "max": 41,
+              "min": 1
+            },
+            "description": "must be between 1 and 14 characters"
+          },
+          {
+            "allowed_pattern": "[a-zA-Z0-9]*",
+            "description": "must contain only alphanumeric characters."
+          }
+          ]
+        }
+      },
+      "resources": {
+        "db": {
+          "type": "OS::Trove::Instance",
+          "properties": {
+            "flavor": {
+              "get_param": "db_flavor"
+            },
+            "size": {
+              "get_param": "db_volume_size"
+            },
+            "users": [
+            {
+              "password": {
+                "get_param": "db_password"
+              },
+              "name": {
+                "get_param": "db_username"
+              },
+              "databases": [
+              {
+                "get_param": "db_name"
+              }
+              ]
+            }
+            ],
+            "name": {
+              "get_param": "db_instance_name"
+            },
+            "databases": [
+            {
+              "name": {
+                "get_param": "db_name"
+              }
+            }
+            ]
+          }
+        }
+      }
+    }`,
+		DisableRollback: os.Disable,
+	}
+	actual, err := Create(fake.ServiceClient(), createOpts).Extract()
+	th.AssertNoErr(t, err)
+
+	expected := CreateExpected
+	th.AssertDeepEquals(t, expected, actual)
+}