Enable root user
diff --git a/openstack/db/v1/instances/requests_test.go b/openstack/db/v1/instances/requests_test.go
index 5e5dcaa..0845e0c 100644
--- a/openstack/db/v1/instances/requests_test.go
+++ b/openstack/db/v1/instances/requests_test.go
@@ -130,3 +130,16 @@
 	res := Delete(fake.ServiceClient(), instanceID)
 	th.AssertNoErr(t, res.Err)
 }
+
+func TestEnableRootUser(t *testing.T) {
+	th.SetupHTTP()
+	defer th.TeardownHTTP()
+
+	HandleEnableRootUserSuccessfully(t, instanceID)
+
+	expected := &User{Name: "root", Password: "secretsecret"}
+
+	user, err := EnableRootUser(fake.ServiceClient(), instanceID).Extract()
+	th.AssertNoErr(t, err)
+	th.AssertDeepEquals(t, expected, user)
+}