@Test public void test_mimetype_to_string_works () { final Map<String,String> parameters = new HashMap<>(); parameters.put("key","value"); final MimeType complex = MimeType.of( MimeType.Type.EXAMPLE, MimeType.SubType.of(MimeType.Facet.PERSONAL, "niketest", Optional.of("json")), parameters ); assertThat(complex.toString()).isEqualTo("example/prs.niketest+json;key=value"); }