@Test
public void testGetKnownFrequencies() {

    FrequencyData instance = FrequencyData.of(RSID, ESP_ALL_PASS, DBSNP_PASS, ESP_AA_PASS, ESP_EA_PASS);
    List<Frequency> expResult = new ArrayList<>();
    expResult.add(DBSNP_PASS);
    expResult.add(ESP_AA_PASS);
    expResult.add(ESP_EA_PASS);
    expResult.add(ESP_ALL_PASS);
    assertThat(instance.getKnownFrequencies(), equalTo(expResult));
}