Junit测试正在使用java.lang.OutOfMemoryError，java堆空间

我正在尝试对一个web应用程序进行一些junit测试，但我一直发现OutOfMemoryError。我知道它发生在代码中的什么地方，但我不确定它为什么这样做

Survey survey = new Survey();
        SurveyLayoutColumn column1 = new SurveyLayoutColumn();
        column1.addAnswerSpace(new Answer());
        SurveyLayoutColumn column2 = new SurveyLayoutColumn();
        column2.addAnswerSpace(new Answer());
        column2.addAnswerSpace(new Answer());
        SurveyLayoutColumn column3 = new SurveyLayoutColumn();
        column3.addAnswerSpace(new Answer());
        survey.addLayoutColumn(column1);
        survey.addLayoutColumn(column2);
        survey.addLayoutColumn(column3);
        survey.addQuestion(new Question());
        survey.addQuestion(new Question());
        survey.addQuestion(new Question());
        survey.addQuestion(new Question());
        Application app = new controllers.Application();
        app.saveSurvey(survey);
        long count = Survey.count();
        assertEquals(count,0);

它发生在app.saveSurvey（surey）上，下面是该方法的代码

public static void saveSurvey(Survey survey) {
        System.out.println("Survey title is: " + survey.title);

        survey.published = true;
        survey.save();

        Map<String, Object> viewData = new HashMap<String, Object>();

        viewData.put("status", "success");

        JSONSerializer serializer = new JSONSerializer();

        serializer
            .include("status")
            .exclude("*");

        renderJSON(serializer.serialize(viewData));
    }

---

看起来Unbinder.unbind（）在一个循环中，调用它自己，每次调用它都会吸收一点内存；它可以使用堆栈（每次调用时都使用该堆栈）或与AbstractStringBuilder连接的东西来实现这一点

---

内存不足是堆栈跟踪不一定指向问题行的一次；在这些情况下，堆栈跟踪通常会显示这样的循环。

您可以发布完整的堆栈跟踪吗？出于好奇，这段代码片段是什么do？java.lang.OutOfMemoryError:java堆空间。这就是它所说的返回数据库中的调查数量。所以你不知道最后执行的是哪一行？？添加日志语句以查找。它可能是序列化程序。你可能有一个周期。

java.lang.OutOfMemoryError: Java heap space
    at java.util.Arrays.copyOf(Arrays.java:2882)
    at java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:100)
    at java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:390)
    at java.lang.StringBuilder.append(StringBuilder.java:119)
    at play.data.binding.Unbinder.unBind(Unbinder.java:106)
    at play.data.binding.Unbinder.unBind(Unbinder.java:110)
    at play.data.binding.Unbinder.unBind(Unbinder.java:63)
    at play.data.binding.Unbinder.unBind(Unbinder.java:110)
    at play.data.binding.Unbinder.unBind(Unbinder.java:110)
    at play.data.binding.Unbinder.unBind(Unbinder.java:63)
    at play.data.binding.Unbinder.unBind(Unbinder.java:110)
    at play.data.binding.Unbinder.unBind(Unbinder.java:110)
    at play.data.binding.Unbinder.unBind(Unbinder.java:63)
    at play.data.binding.Unbinder.unBind(Unbinder.java:110)
    at play.data.binding.Unbinder.unBind(Unbinder.java:110)
    at play.data.binding.Unbinder.unBind(Unbinder.java:63)
    at play.data.binding.Unbinder.unBind(Unbinder.java:110)
    at play.data.binding.Unbinder.unBind(Unbinder.java:110)
    at play.data.binding.Unbinder.unBind(Unbinder.java:63)
    at play.data.binding.Unbinder.unBind(Unbinder.java:110)
    at play.data.binding.Unbinder.unBind(Unbinder.java:110)
    at play.data.binding.Unbinder.unBind(Unbinder.java:63)
    at play.data.binding.Unbinder.unBind(Unbinder.java:110)
    at play.data.binding.Unbinder.unBind(Unbinder.java:110)
    at play.data.binding.Unbinder.unBind(Unbinder.java:63)
    at play.data.binding.Unbinder.unBind(Unbinder.java:110)
    at play.data.binding.Unbinder.unBind(Unbinder.java:110)
    at play.data.binding.Unbinder.unBind(Unbinder.java:63)
    at play.data.binding.Unbinder.unBind(Unbinder.java:110)
    at play.data.binding.Unbinder.unBind(Unbinder.java:110)
    at play.data.binding.Unbinder.unBind(Unbinder.java:63)
    at play.data.binding.Unbinder.unBind(Unbinder.java:110)