Fixup URL assembly, add simple test
diff --git a/openstack/compute/v2/images/requests.go b/openstack/compute/v2/images/requests.go
index a755ea1..7ce5139 100644
--- a/openstack/compute/v2/images/requests.go
+++ b/openstack/compute/v2/images/requests.go
@@ -67,6 +67,6 @@
 // Delete deletes the specified image ID.
 func Delete(client *gophercloud.ServiceClient, id string) DeleteResult {
 	var result DeleteResult
-	_, result.Err = client.Delete(getURL(client, id), nil)
+	_, result.Err = client.Delete(deleteURL(client, id), nil)
 	return result
 }
diff --git a/openstack/compute/v2/images/requests_test.go b/openstack/compute/v2/images/requests_test.go
index 9a05f97..93a97bd 100644
--- a/openstack/compute/v2/images/requests_test.go
+++ b/openstack/compute/v2/images/requests_test.go
@@ -173,3 +173,19 @@
 	th.AssertNoErr(t, err)
 	th.CheckEquals(t, expected, actual)
 }
+
+// Test Image delete
+func TestDeleteImage(t *testing.T) {
+	th.SetupHTTP()
+	defer th.TeardownHTTP()
+
+	th.Mux.HandleFunc("/images/12345678", func(w http.ResponseWriter, r *http.Request) {
+		th.TestMethod(t, r, "DELETE")
+		th.TestHeader(t, r, "X-Auth-Token", fake.TokenID)
+
+		w.WriteHeader(http.StatusNoContent)
+	})
+
+	res := Delete(fake.ServiceClient(), "12345678")
+	th.AssertNoErr(t, res.Err)
+}
diff --git a/openstack/compute/v2/images/urls.go b/openstack/compute/v2/images/urls.go
index 9b3c86d..b1bf103 100644
--- a/openstack/compute/v2/images/urls.go
+++ b/openstack/compute/v2/images/urls.go
@@ -9,3 +9,7 @@
 func getURL(client *gophercloud.ServiceClient, id string) string {
 	return client.ServiceURL("images", id)
 }
+
+func deleteURL(client *gophercloud.ServiceClient, id string) string {
+	return client.ServiceURL("images", id)
+}