@Test
public void testConvertCustomPropertiesSmallestPossible() throws Exception {

    Map<String, Set<String>> properties = convertCustomProperties(smallestPossibleRecord);
    assertThat(properties.keySet(), Matchers.containsInAnyOrder("prop1"));
    assertThat(properties.get("prop1"), Matchers.containsInAnyOrder("val1"));
}