git.stella-ops.org/bench/reachability-benchmark/cases/java/micronaut-deserialize/src/ControllerTest.java

package bench.reachability.micronaut;

import java.io.*;
import java.util.*;
import java.util.Base64;

// Simple assertion-based oracle (JUnit-free for offline determinism)
public class ControllerTest {
    private static String serialize(Object obj) throws IOException {
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        try (ObjectOutputStream oos = new ObjectOutputStream(bos)) {
            oos.writeObject(obj);
        }
        return Base64.getEncoder().encodeToString(bos.toByteArray());
    }

    public static void main(String[] args) throws Exception {
        Map<String, String> body = Map.of("payload", serialize("micronaut"));
        var res = Controller.handleUpload(body);
        assert res.status() == 200 : "status";
        assert res.body().equals("micronaut") : "body";

        File outDir = new File("outputs");
        outDir.mkdirs();
        try (FileWriter fw = new FileWriter(new File(outDir, "SINK_REACHED"))) {
            fw.write("true");
        }
    }
}