@Test
public void testDeletion(){

    //1 12345   T   .   0.03  (an T->. monomorphic site (no alt allele) on chr1 at position 12345 with frequency of 0.03%)
    Mockito.when(tabixReader.query("1:12345-12345"))
            .thenReturn(MockTabixIterator.of("1\t12345\tAT\tA\t0.03"));
    assertThat(instance.getFrequencyData(variant(1, 12345, "AT", "A")), equalTo(localFrequencyData(0.03f)));
}