@Test
public void testGetOrDefaultReturnsExpectedService() {

    GenomeAssembly defaultAssembly = HG19_SERVICE.getGenomeAssembly();
    GenomeAnalysisServiceProvider instance = new GenomeAnalysisServiceProvider(HG19_SERVICE);
    assertThat(instance.getOrDefault(defaultAssembly, HG19_SERVICE), equalTo(HG19_SERVICE));
}