Mockitoェ・・・

PreviewActivity.java

package jp.mydns.sys1yagi.android.mockitosample;

import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.util.Log;
import android.view.View;
import android.widget.ImageView;

public class PreviewActivity extends FragmentActivity {
  private final static String TAG = PreviewActivity.class.getSimpleName();
  public static final String EXTRA_URL = "url";

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_preview);
  }

  @Override
  protected void onResume() {
    super.onResume();
    String url = getIntent().getStringExtra(EXTRA_URL);
    startLoading(url);
  }

  public void startLoading(final String url) {
    new Thread() {
      @Override
      public void run() {
        final Bitmap bitmap = loadNetwork(url);
        runOnUiThread(new Runnable() {
          @Override
          public void run() {
            findViewById(R.id.text).setVisibility(View.GONE);
            ImageView imageView = (ImageView) findViewById(R.id.image);
            imageView.setVisibility(View.VISIBLE);
            imageView.setImageBitmap(bitmap);
          }
        });
      }
    }.start();
  }

  public Bitmap loadNetwork(String url) {
    try {
      return BitmapFactory.decodeStream(new URL(url).openStream());
    } catch (MalformedURLException e) {
      e.printStackTrace();
    } catch (IOException e) {
      e.printStackTrace();
    }
    return null;
  }
}

PreviewActivityTest.java

package jp.mydns.sys1yagi.android.mockitosample;

import static org.mockito.Matchers.anyString;
import static org.mockito.Mockito.doAnswer;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.spy;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.mockito.invocation.InvocationOnMock;
import org.mockito.stubbing.Answer;

import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.test.ActivityUnitTestCase;
import android.util.Log;

public class PreviewActivityTest extends ActivityUnitTestCase<PreviewActivity> {
  private final static String TAG = PreviewActivityTest.class.getSimpleName();
  
  public PreviewActivityTest() {
    super(PreviewActivity.class);
  }

  @Override
  protected void setUp() throws Exception {
    super.setUp();
    System.setProperty("dexmaker.dexcache", getInstrumentation()
        .getTargetContext().getCacheDir().getPath());
  }

  public void testPreviewActivity() {
    Intent intent = new Intent();
    intent.putExtra(PreviewActivity.EXTRA_URL, "test");
    
    PreviewActivity target = startActivity(intent, null, null);
    target = spy(target);
    
    doAnswer(new Answer<Bitmap>() {
      @Override
      public Bitmap answer(InvocationOnMock invocation) throws Throwable {
        Log.d(TAG, "answer");
        assertEquals("test", invocation.getArguments()[0]);
        return BitmapFactory.decodeResource(getInstrumentation().getContext()
            .getResources(), R.drawable.ic_launcher);
      }
    }).when(target).loadNetwork(anyString());
    
    //getInstrumentation().callActivityOnStart(target); これICSだと死ぬ
    getInstrumentation().callActivityOnResume(target);
  }

}