### Question:
JsonConverter implements Converter { @Override public void configure(Map<String, ?> configs, boolean isKey) { Object enableConfigsVal = configs.get(SCHEMAS_ENABLE_CONFIG); if (enableConfigsVal != null) enableSchemas = enableConfigsVal.toString().equals("true"); serializer.configure(configs, isKey); deserializer.configure(configs, isKey); Object cacheSizeVal = configs.get(SCHEMAS_CACHE_SIZE_CONFIG); if (cacheSizeVal != null) cacheSize = Integer.parseInt((String) cacheSizeVal); fromConnectSchemaCache = new SynchronizedCache<>(new LRUCache<Schema, ObjectNode>(cacheSize)); toConnectSchemaCache = new SynchronizedCache<>(new LRUCache<JsonNode, Schema>(cacheSize)); }  @Override void configure(Map<String, ?> configs, boolean isKey); @Override byte[] fromConnectData(String topic, Schema schema, Object value); @Override SchemaAndValue toConnectData(String topic, byte[] value); ObjectNode asJsonSchema(Schema schema); Schema asConnectSchema(JsonNode jsonSchema);  }### Answer:
@Test public void testJsonSchemaCacheSizeFromConfigFile() throws URISyntaxException, IOException { URL url = getClass().getResource("/connect-test.properties"); File propFile = new File(url.toURI()); String workerPropsFile = propFile.getAbsolutePath(); Map<String, String> workerProps = !workerPropsFile.isEmpty() ? Utils.propsToStringMap(Utils.loadProps(workerPropsFile)) : Collections.<String, String>emptyMap(); JsonConverter rc = new JsonConverter(); rc.configure(workerProps, false); }