Update blockstorage v2 API
diff --git a/openstack/blockstorage/v2/volumes/fixtures.go b/openstack/blockstorage/v2/volumes/fixtures.go
new file mode 100644
index 0000000..b70e298
--- /dev/null
+++ b/openstack/blockstorage/v2/volumes/fixtures.go
@@ -0,0 +1,204 @@
+package volumes
+
+import (
+	"fmt"
+	"net/http"
+	"testing"
+
+	th "github.com/rackspace/gophercloud/testhelper"
+	fake "github.com/rackspace/gophercloud/testhelper/client"
+)
+
+func MockListResponse(t *testing.T) {
+	th.Mux.HandleFunc("/volumes/detail", func(w http.ResponseWriter, r *http.Request) {
+		th.TestMethod(t, r, "GET")
+		th.TestHeader(t, r, "X-Auth-Token", fake.TokenID)
+
+		w.Header().Add("Content-Type", "application/json")
+		w.WriteHeader(http.StatusOK)
+
+		fmt.Fprintf(w, `
+  {
+  "volumes": [
+    {
+      "volume_type": "lvmdriver-1",
+      "created_at": "2015-09-17T03:35:03.000000",
+      "bootable": "false",
+      "name": "vol-001",
+      "os-vol-mig-status-attr:name_id": null,
+      "consistencygroup_id": null,
+      "source_volid": null,
+      "os-volume-replication:driver_data": null,
+      "multiattach": false,
+      "snapshot_id": null,
+      "replication_status": "disabled",
+      "os-volume-replication:extended_status": null,
+      "encrypted": false,
+      "os-vol-host-attr:host": null,
+      "availability_zone": "nova",
+      "attachments": [
+        {
+        "attachment_id": "03987cd1-0ad5-40d1-9b2a-7cc48295d4fa",
+        "id": "47e9ecc5-4045-4ee3-9a4b-d859d546a0cf",
+        "volume_id": "289da7f8-6440-407c-9fb4-7db01ec49164",
+        "server_id": "d1c4788b-9435-42e2-9b81-29f3be1cd01f",
+        "host_name": "stack",
+        "device": "/dev/vdc"
+        }
+      ],
+      "id": "289da7f8-6440-407c-9fb4-7db01ec49164",
+      "size": 75,
+      "user_id": "ff1ce52c03ab433aaba9108c2e3ef541",
+      "os-vol-tenant-attr:tenant_id": "304dc00909ac4d0da6c62d816bcb3459",
+      "os-vol-mig-status-attr:migstat": null,
+      "metadata": {"foo": "bar"},
+      "status": "available",
+      "description": null
+    },
+    {
+      "volume_type": "lvmdriver-1",
+      "created_at": "2015-09-17T03:32:29.000000",
+      "bootable": "false",
+      "name": "vol-002",
+      "os-vol-mig-status-attr:name_id": null,
+      "consistencygroup_id": null,
+      "source_volid": null,
+      "os-volume-replication:driver_data": null,
+      "multiattach": false,
+      "snapshot_id": null,
+      "replication_status": "disabled",
+      "os-volume-replication:extended_status": null,
+      "encrypted": false,
+      "os-vol-host-attr:host": null,
+      "availability_zone": "nova",
+      "attachments": [],
+      "id": "96c3bda7-c82a-4f50-be73-ca7621794835",
+      "size": 75,
+      "user_id": "ff1ce52c03ab433aaba9108c2e3ef541",
+      "os-vol-tenant-attr:tenant_id": "304dc00909ac4d0da6c62d816bcb3459",
+      "os-vol-mig-status-attr:migstat": null,
+      "metadata": {},
+      "status": "available",
+      "description": null
+    }
+  ]
+}
+
+  `)
+	})
+}
+
+func MockGetResponse(t *testing.T) {
+	th.Mux.HandleFunc("/volumes/d32019d3-bc6e-4319-9c1d-6722fc136a22", func(w http.ResponseWriter, r *http.Request) {
+		th.TestMethod(t, r, "GET")
+		th.TestHeader(t, r, "X-Auth-Token", fake.TokenID)
+
+		w.Header().Add("Content-Type", "application/json")
+		w.WriteHeader(http.StatusOK)
+		fmt.Fprintf(w, `
+{
+  "volume": {
+    "volume_type": "lvmdriver-1",
+    "created_at": "2015-09-17T03:32:29.000000",
+    "bootable": "false",
+    "name": "vol-001",
+    "os-vol-mig-status-attr:name_id": null,
+    "consistencygroup_id": null,
+    "source_volid": null,
+    "os-volume-replication:driver_data": null,
+    "multiattach": false,
+    "snapshot_id": null,
+    "replication_status": "disabled",
+    "os-volume-replication:extended_status": null,
+    "encrypted": false,
+    "os-vol-host-attr:host": null,
+    "availability_zone": "nova",
+    "attachments": [{
+        "attachment_id": "dbce64e3-f3b9-4423-a44f-a2b15deffa1b",
+        "id": "3eafc6f5-ed74-456d-90fb-f253f594dbae",
+        "volume_id": "d32019d3-bc6e-4319-9c1d-6722fc136a22",
+        "server_id": "d1c4788b-9435-42e2-9b81-29f3be1cd01f",
+        "host_name": "stack",
+        "device": "/dev/vdd"
+        }],
+    "id": "d32019d3-bc6e-4319-9c1d-6722fc136a22",
+    "size": 75,
+    "user_id": "ff1ce52c03ab433aaba9108c2e3ef541",
+    "os-vol-tenant-attr:tenant_id": "304dc00909ac4d0da6c62d816bcb3459",
+    "os-vol-mig-status-attr:migstat": null,
+    "metadata": {},
+    "status": "available",
+    "description": null
+  }
+}
+      `)
+	})
+}
+
+func MockCreateResponse(t *testing.T) {
+	th.Mux.HandleFunc("/volumes", func(w http.ResponseWriter, r *http.Request) {
+		th.TestMethod(t, r, "POST")
+		th.TestHeader(t, r, "X-Auth-Token", fake.TokenID)
+		th.TestHeader(t, r, "Content-Type", "application/json")
+		th.TestHeader(t, r, "Accept", "application/json")
+		th.TestJSONRequest(t, r, `
+{
+    "volume": {
+    	"name": "vol-001",
+        "size": 75
+    }
+}
+      `)
+
+		w.Header().Add("Content-Type", "application/json")
+		w.WriteHeader(http.StatusAccepted)
+
+		fmt.Fprintf(w, `
+{
+  "volume": {
+    "size": 75,
+    "id": "d32019d3-bc6e-4319-9c1d-6722fc136a22",
+    "metadata": {},
+    "created_at": "2015-09-17T03:32:29.044216",
+    "encrypted": false,
+    "bootable": "false",
+    "availability_zone": "nova",
+    "attachments": [],
+    "user_id": "ff1ce52c03ab433aaba9108c2e3ef541",
+    "status": "creating",
+    "description": null,
+    "volume_type": "lvmdriver-1",
+    "name": "vol-001",
+    "replication_status": "disabled",
+    "consistencygroup_id": null,
+    "source_volid": null,
+    "snapshot_id": null,
+    "multiattach": false
+  }
+}
+    `)
+	})
+}
+
+func MockDeleteResponse(t *testing.T) {
+	th.Mux.HandleFunc("/volumes/d32019d3-bc6e-4319-9c1d-6722fc136a22", func(w http.ResponseWriter, r *http.Request) {
+		th.TestMethod(t, r, "DELETE")
+		th.TestHeader(t, r, "X-Auth-Token", fake.TokenID)
+		w.WriteHeader(http.StatusAccepted)
+	})
+}
+
+func MockUpdateResponse(t *testing.T) {
+	th.Mux.HandleFunc("/volumes/d32019d3-bc6e-4319-9c1d-6722fc136a22", func(w http.ResponseWriter, r *http.Request) {
+		th.TestMethod(t, r, "PUT")
+		th.TestHeader(t, r, "X-Auth-Token", fake.TokenID)
+		w.WriteHeader(http.StatusOK)
+		fmt.Fprintf(w, `
+{
+  "volume": {
+    "name": "vol-002"
+  }
+}
+        `)
+	})
+}