@Test
public void testWriteStringStartsWithAHeaderLine() {

    OutputSettings settings = OutputSettings.builder()
            .outputFormats(EnumSet.of(OutputFormat.TSV_GENE))
            .build();
    String outString = instance.writeString(ModeOfInheritance.AUTOSOMAL_DOMINANT, analysis, analysisResults, settings);
    String[] lines = outString.split("\n");
    assertThat(lines[0] + "\n", equalTo(HEADER));
}