### Question:
ByteArrayConverter implements Converter { @Override public SchemaAndValue toConnectData(String topic, byte[] value) { return new SchemaAndValue(Schema.OPTIONAL_BYTES_SCHEMA, value); }  @Override void configure(Map<String, ?> configs, boolean isKey); @Override byte[] fromConnectData(String topic, Schema schema, Object value); @Override SchemaAndValue toConnectData(String topic, byte[] value);  }### Answer:
@Test public void testToConnect() { SchemaAndValue data = converter.toConnectData(TOPIC, SAMPLE_BYTES); assertEquals(Schema.OPTIONAL_BYTES_SCHEMA, data.schema()); assertTrue(Arrays.equals(SAMPLE_BYTES, (byte[]) data.value())); }
@Test public void testToConnectNull() { SchemaAndValue data = converter.toConnectData(TOPIC, null); assertEquals(Schema.OPTIONAL_BYTES_SCHEMA, data.schema()); assertNull(data.value()); }