public static Test suite() {
TestSuite suite = new TestSuite();
suite.addTestSuite(ImmutableSortedMapTest.class);
suite.addTest(SetTestSuiteBuilder.using(
new ImmutableSortedMapKeySetGenerator())
.withFeatures(
CollectionSize.ANY,
CollectionFeature.SERIALIZABLE,
CollectionFeature.KNOWN_ORDER,
CollectionFeature.REJECTS_DUPLICATES_AT_CREATION,