@Test
public void should_not_migrate_a_page_with_already_a_uuid() throws Exception {

    String uuid = UUID.randomUUID().toString();
    Page pageWithUUID = aPage().withId("maPage").withUUID(uuid).build();
    pageUUIDMigrationStep.migrate(pageWithUUID);
    assertThat(pageWithUUID.getUUID()).isEqualTo(uuid);
}