private void assertSupertypes(String typeStr, String... supertypeStrs) { Set<JetType> allSupertypes = TypeUtils.getAllSupertypes(makeType(scopeWithImports, typeStr)); Set<JetType> expected = Sets.newHashSet(); for (String supertypeStr : supertypeStrs) { JetType supertype = makeType(scopeWithImports, supertypeStr); expected.add(supertype); } assertEquals(expected, allSupertypes); }