Java 如何在Android studio中测试截击库？

我想使用Volley库将JSON文件从Android应用程序传输到RESTAPI服务器。首先，我想用JUnit测试库，看看我的请求是否正确发送，而不在应用程序中运行它们。这是我的测试：

public class NetworkCommunicationTest extends AndroidTestCase {

    private static final String JSON_URL = "https://www.example.com/data.json";
    Context context;

    @Test
    public void testSendGet() {

        context = new MockContext();

        JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Request.Method.GET,JSON_URL, null, new Response.Listener<JSONObject>() {

            @Override
            public void onResponse(JSONObject response) {
             Assert.assertTrue("",true);

            }
        }, new Response.ErrorListener() {

            @Override
            public void onErrorResponse(VolleyError error) {
                // TODO Auto-generated method stub

            }
        });

        RequestQueue requestQueue = Volley.newRequestQueue(context);
        requestQueue.add(jsonObjectRequest);
    }

}

我怎样才能解决这个问题？如何打印response.toString（）消息

---

只是为了获得更多的参考资料，没有我链接的库，我遇到了一个可登录的问题。

遵循本教程谢谢您的回答，但问题是如何在Android中使用，而是如何在Android studio中的测试中使用。我能够使用本主题中描述的FakeHttpStack完成这个技巧：

java.lang.NullPointerException
at com.android.volley.toolbox.Volley.newRequestQueue(Volley.java:48)
at com.android.volley.toolbox.Volley.newRequestQueue(Volley.java:78)
at tests.NetworkCommunicationTest.testSendPost(NetworkCommunicationTest.java:47)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:86)
at org.junit.runners.Suite.runChild(Suite.java:128)
at org.junit.runners.Suite.runChild(Suite.java:27)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:78)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:212)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:68)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:140)