@Parameters public static Collection data() { File tmpDir = new File("/tmp/test-" + System.currentTimeMillis()); SchemaRegistry<String> fileRegistry = new FileSchemaRegistry<String>(tmpDir, new StringSerde()); SchemaRegistry<String> memoryRegistry = new MemorySchemaRegistry<String>(); Object[][] data = new Object[][] { { fileRegistry }, { memoryRegistry } }; return Arrays.asList(data); }