MockContentResolver在ServiceTestCase空指针 [英] MockContentResolver in a ServiceTestCase null pointers

问题描述

我试图创建一个TDD上下的方式服务，并为此我创建了下面的测试。基本服务轮询Web服务，并把新的信息内容提供商。既然是服务，我使用，这将是存储信息到作为测试神谕的内容提供商。

我想我想要做的是为了实现这一点，但还缺乏一个ProviderTestCase2类以外的这样的例子创建MockContentResolver。当我运行该脚本但它它放在addProvider行空指针。

有没有人有创建/访问嘲弄了内容解析的例子吗？在ServiceTestCase？

 公共类OnDemandPollingServiceTests延伸ServiceTestCase＆LT; OnDemandJobFetchingService＆GT; {
  私人MockContentResolver mContentResolver;  公共OnDemandPollingServiceTests（）{
        超（OnDemandJobFetchingService.class）;
    }  保护无效设置（）抛出异常{
    super.setUp（）;
    mContext =的getContext（）;    ContentProvider的CP =新OnDemandJobInfoProvider（）;
    mContentResolver.addProvider（OnDemandJobInfoProvider.AUTHORITY，CP）;
  }  保护无效拆解（）抛出异常{
    super.tearDown（）;
  }  公共无效testJobInsertion（）{
    乌里URL = Jobs.JobsColumns.CONTENT_URI;
    光标光标;
    光标= mContentResolver.query（URL，NULL，NULL，NULL，NULL）;
    之前= cursor.getCount INT（）;
    cursor.close（）;    意图startIntent =新的Intent（）;
    startIntent.setClass（mContext，OnDemandJobFetchingService.class）;
    startService（startIntent）;    光标= mContentResolver.query（URL，NULL，NULL，NULL，NULL）;
    后= cursor.getCount INT（）;
    cursor.close（）;
    assertTrue（前=后！）;
  }
}
 

解决方案

对我来说，好像你从来没有实例化你的 mContentResolver （你不必像一条线 mContentResolver =新MockContentResolver（）;

I'm trying to create a Service in a TDD-ish manner and to that end I have created the following test. The service basically polls a Web Service and puts new information into a Content Provider. Since it is a service, I am using the Content Provider that it will be storing information into as the oracle of the test.

I think what I want to do is create a MockContentResolver in order to achieve this but there is a lack of examples of it outside of a ProviderTestCase2 class. When I run this script however it it null pointers on the addProvider line.

Does anyone have an example of creating/accessing a mocked out content resolver? In a ServiceTestCase?

public class OnDemandPollingServiceTests extends ServiceTestCase<OnDemandJobFetchingService> {
  private MockContentResolver mContentResolver;

  public OnDemandPollingServiceTests() {
        super(OnDemandJobFetchingService.class);
    }

  protected void setUp() throws Exception {
    super.setUp();
    mContext = getContext();

    ContentProvider cp = new OnDemandJobInfoProvider();
    mContentResolver.addProvider(OnDemandJobInfoProvider.AUTHORITY, cp);
  }

  protected void tearDown() throws Exception {
    super.tearDown();
  }

  public void testJobInsertion() {
    Uri url = Jobs.JobsColumns.CONTENT_URI;
    Cursor cursor;
    cursor = mContentResolver.query(url, null, null, null, null);
    int before = cursor.getCount();
    cursor.close();

    Intent startIntent = new Intent();
    startIntent.setClass(mContext, OnDemandJobFetchingService.class);
    startService(startIntent);

    cursor = mContentResolver.query(url, null, null, null, null);
    int after = cursor.getCount();
    cursor.close();
    assertTrue(before != after);
  }
}

解决方案

To me it seems like you have never instantiated your mContentResolver (you don't have a line like mContentResolver = new MockContentResolver();.

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