Add Capsule Delete operation

Depends-On: gophercloud#944
Depends-On: gophercloud#955

Change-Id: Ib656b520fa334dc07309bf049c99b5d09a9c1028
Signed-off-by: Kevin Zhao <kevin.zhao@arm.com>

openstack/container/v1/capsules/requests.go

@@ -50,3 +50,9 @@ func List(client *gophercloud.ServiceClient, opts ListOptsBuilder) pagination.Pa
 		return CapsulePage{pagination.LinkedPageBase{PageResult: r}}
 	})
 }
+
+// Delete implements Capsule delete request.
+func Delete(client *gophercloud.ServiceClient, id string) (r DeleteResult) {
+	_, r.Err = client.Delete(deleteURL(client, id), nil)
+	return
+}

openstack/container/v1/capsules/results.go

@@ -80,6 +80,11 @@ type Capsule struct {
 	VolumesInfo map[string][]string `json:"volumes_info"`
 }
 
+// DeleteResult represents the result of a delete operation.
+type DeleteResult struct {
+       gophercloud.ErrResult
+}
+
 type Address struct {
 	PreserveOnDelete bool    `json:"preserve_on_delete"`
 	Addr             string  `json:"addr"`

openstack/container/v1/capsules/testing/fixtures.go

@@ -125,3 +125,11 @@ func HandleCapsuleListSuccessfully(t *testing.T) {
 		fmt.Fprintf(w, CapsuleListBody)
 	})
 }
+
+func HandleCapsuleDeleteSuccessfully(t *testing.T) {
+	th.Mux.HandleFunc("/capsules/963a239d-3946-452b-be5a-055eab65a421", func(w http.ResponseWriter, r *http.Request) {
+		th.TestMethod(t, r, "DELETE")
+		th.TestHeader(t, r, "X-Auth-Token", fakeclient.TokenID)
+		w.WriteHeader(http.StatusNoContent)
+	})
+}

openstack/container/v1/capsules/testing/requests_test.go

@@ -184,3 +184,13 @@ func TestListCapsule(t *testing.T) {
 		t.Errorf("Expected 1 page, got %d", count)
 	}
 }
+
+func TestDelete(t *testing.T) {
+	th.SetupHTTP()
+	defer th.TeardownHTTP()
+
+	HandleCapsuleDeleteSuccessfully(t)
+
+	res := capsules.Delete(fakeclient.ServiceClient(), "963a239d-3946-452b-be5a-055eab65a421")
+	th.AssertNoErr(t, res.Err)
+}

openstack/container/v1/capsules/urls.go

@@ -11,3 +11,7 @@ func getURL(client *gophercloud.ServiceClient, id string) string {
 func listURL(c *gophercloud.ServiceClient) string {
 	return c.ServiceURL("capsules")
 }
+
+func deleteURL(c *gophercloud.ServiceClient, id string) string {
+       return c.ServiceURL("capsules", id)
+}