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如：http://www.google.com/codesearch#5Ps-HF4SDBI/PoseTest/src/com/pose/test/ItemContentProviderTests.java&q=ProviderTestCase2&sq=&ct=rc&cd=14

package com.pose.test;

import com.pose.models.Item;
import com.pose.providers.*;
import com.pose.service.GSServiceHelper;

import android.net.Uri;
import android.os.Handler;
import android.test.ProviderTestCase2;
import android.test.mock.MockContentResolver;
import android.util.Log;
import android.content.ContentUris;
import android.content.ContentValues;
import android.database.ContentObserver;
import android.database.Cursor;


public class ItemContentProviderTests extends ProviderTestCase2<ItemsContentProvider>
{
        private MockContentResolver mMockResolver;
        private Class<ItemsContentProvider> mProviderClass;
    private ItemsContentProvider mProvider;
    private String mProviderAuthority;

        public ItemContentProviderTests()
        {
                super(ItemsContentProvider.class, ItemsContentProvider.AUTHORITY);

                setName("ItemsProviderTests");
        mProviderClass = ItemsContentProvider.class;
        mProviderAuthority = ItemsContentProvider.AUTHORITY;
        }

        @Override
    protected void setUp() throws Exception
    {
         // We should not invoke super.setUp() here to avoid the UnsupportedOperationException.
        super.setUp();

                mMockResolver = getMockContentResolver();

        mProvider = mProviderClass.newInstance();
        assertNotNull(mProvider);
        mProvider.attachInfo(getContext(), null);
        mMockResolver.addProvider(mProviderAuthority, mProvider);
    }


    @Override
    public ItemsContentProvider getProvider()
    {
        return mProvider;
    }

    protected void tearDown() throws Exception
    {
        super.tearDown();
        mMockResolver.delete(Item.CONTENT_URI,"id = id",null);
    }

    public void testProviderSampleCreation()
    {
        ItemsContentProvider provider = getProvider();
        assertNotNull(provider);
    }

    public void testItemCreateRead()
    {
        ContentValues values = new ContentValues();

        values.put(Item.MESSAGE, "Test Pose Zebra Zulu");

        Uri uri = mMockResolver.insert(Item.CONTENT_URI, values);

        //Uri myItem = ContentUris.withAppendedId(Item.CONTENT_URI, 1);  //Not really using URI syntax for now

        // Then query for this specific record:
        Cursor cur = mMockResolver.query(Item.CONTENT_URI, null, Item.MESSAGE + " = 'Test Pose Zebra Zulu'", null, Item.ITEMID + " ASC");

        assertNotNull(cur);
        assertEquals(1,cur.getCount());
    }

    public void testItemDoesNotDuplicate()
    {
        // insert the first record/tuple into the db
        ContentValues values = new ContentValues();
        values.put(Item.MESSAGE, "Test Pose Zebra Zulu");
        values.put(Item.ITEMID, "1");
        Uri uri = mMockResolver.insert(Item.CONTENT_URI, values);
        Cursor cur = mMockResolver.query(Item.CONTENT_URI, null, Item.MESSAGE + " = 'Test Pose Zebra Zulu'", null, Item.ITEMID + " ASC");
        assertNotNull(cur);
        assertEquals(1,cur.getCount());

        // Now we make sure that items can not save duplicates of the same id
        values = new ContentValues();
        values.put(Item.MESSAGE, "NOT SAVED");
        values.put(Item.ITEMID, "1");
        uri = mMockResolver.insert(Item.CONTENT_URI, values);
        cur = mMockResolver.query(Item.CONTENT_URI, null, Item.MESSAGE + " = 'NOT SAVED'", null, Item.ITEMID + " ASC");
        assertNotNull(cur);
        assertEquals(1,cur.getCount());

        // Verify that we only have 1 item with an item id of '1'
        cur = mMockResolver.query(Item.CONTENT_URI, null, Item.ITEMID + " = '1'", null, Item.ITEMID + " ASC");
        assertNotNull(cur);
        assertEquals(1,cur.getCount());
    }

    public void testLoadUnAuthFeed()
    {
        GSServiceHelper gsHelper1 = GSServiceHelper.getGSServiceObject(getContext().getApplicationContext());

        GSServiceHelper gsHelper2 = GSServiceHelper.getGSServiceObject(getContext().getApplicationContext());

        assertNotNull(gsHelper1);
        assertNotNull(gsHelper2);

        assertEquals(gsHelper1, gsHelper2);

        //Bind with and start GSService
        gsHelper1.doBindService();

        String requestID = gsHelper1.loadPosers();

        assertTrue(requestID.length() > 0);
    }

    public void testUnAuthDataLoaded()
    {
        Handler handler = new Handler();

        class ItemsContentObserver extends ContentObserver
        {
                  public ItemsContentObserver( Handler h )
                  {
                        super( h );
                  }

                  public void onChange(boolean selfChange)
                  {
                        Log.i( "testUnAuthDataLoaded()", "StringsContentObserver.onChange( "+selfChange+")" );
                  }
        }

        ItemsContentObserver co = new ItemsContentObserver(handler);

        mMockResolver.registerContentObserver(Item.CONTENT_URI, true, co);
    }


}