@Test
public void testThatSpecifiedTsvFileExtensionIsPresent() {

    OutputFormat testedFormat = OutputFormat.TSV_GENE;
    OutputSettings settings = OutputSettings.builder().build();
    String expResult = String.format("%s/wibble_exomiser_AD.%s", DEFAULT_OUTPUT_DIR, testedFormat.getFileExtension());
    String result = ResultsWriterUtils.makeOutputFilename(vcfPath, settings.getOutputPrefix(), testedFormat, ModeOfInheritance.AUTOSOMAL_DOMINANT);
    assertThat(result, equalTo(expResult));
}