JSONWriterTest_error.java

package com.alibaba.json.bvt.stream;

import java.io.StringWriter;
import java.lang.reflect.Field;

import junit.framework.TestCase;

import org.junit.Assert;

import com.alibaba.fastjson.JSONWriter;
import com.alibaba.fastjson.serializer.SerializerFeature;

public class JSONWriterTest_error extends TestCase {

    public void test_writer() throws Exception {
        Field field = JSONWriter.class.getDeclaredField("context");
        field.setAccessible(true);

        StringWriter out = new StringWriter();
        JSONWriter writer = new JSONWriter(out);
        writer.config(SerializerFeature.UseSingleQuotes, true);
        writer.startObject();

        Object context = field.get(writer);
        Field stateField = context.getClass().getDeclaredField("state");
        stateField.setAccessible(true);
        stateField.set(context, -1);

        Exception error = null;
        try {
            writer.startObject();
        } catch (Exception ex) {
            error = ex;
        }
        Assert.assertNotNull(error);
        
        writer.close();

    }

}