@Test
public void doubleToJson() {

    JsonNode converted = parse(converter.fromConnectData(TOPIC, Schema.FLOAT64_SCHEMA, 12.34));
    validateEnvelope(converted);
    assertEquals(parse("{ \"type\": \"double\", \"optional\": false }"), converted.get(JsonSchema.ENVELOPE_SCHEMA_FIELD_NAME));
    assertEquals(12.34, converted.get(JsonSchema.ENVELOPE_PAYLOAD_FIELD_NAME).doubleValue(), 0.001);
}