@Test
public void testMatchSequenceKeyWithDescriptorWhenDescriptorNameIsWrong() {

    //GIVEN
    String descriptorName = "something";
    given(manager.getSequences(descriptorName)).willReturn(new HashMap<String, WilmaSequence>());
    //WHEN
    WilmaSequence result = underTest.matchSequenceKeyWithDescriptor(descriptorName, keys);
    //THEN
    Assert.assertNull(result);
}