Mockito在简单测试中抛出OutOfMemoryError

我尝试使用Mockito模拟数据库池(仅用于检索数据)，但是在运行性能测试以在一段时间内检索到许多模拟连接时，它用尽了内存.

I tried using Mockito to simulate a database pool (for retrieving data only), but when running a performance test that retrieved many mock connections over a period of time, it ran out of memory.

这是一个简化的自包含代码，在我的计算机上进行了大约150,000次循环迭代后，该代码引发OutOfMemoryError(尽管似乎没有全局保存任何内容，并且所有内容都应该是可垃圾回收的).我在做什么错了?

Here is a simplified self-contained code, which throws an OutOfMemoryError after about 150,000 loop iterations on my machine (despite that nothing seems to be saved globally, and everything should be garbage collectable). What am I doing wrong?

import static org.mockito.Mockito.when;

import java.sql.Connection;

import org.mockito.Mock;
import org.mockito.MockitoAnnotations;

public class Test1 {

    static class DbPool {
        public Connection getConnection() {return null;}
    }

    @Mock
    private DbPool dbPool;

    @Mock
    private Connection connection;

    public Test1() {
        MockitoAnnotations.initMocks(this);
        when(dbPool.getConnection()).thenReturn(connection);

        for(int i=0;i<1000000;i++) {
            dbPool.getConnection();
            System.out.println(i);
        }
    }

    public static void main(String s[]) {       
        new Test1();
    }
}