TestOutputTopic<String, Ranking> out = testDriver.createOutputTopic(
OUT,
(JsonDeserializer<String>)keySerde.deserializer(),
(JsonDeserializer<Ranking>)valueSerde.deserializer());
TestOutputTopic<String, Ranking> out = testDriver.createOutputTopic(
OUT,
(JsonDeserializer<String>)keySerde.deserializer(),
(JsonDeserializer<Ranking>)valueSerde.deserializer());