我在我的项目上运行Robolectric 2.x(2.4)。我已经按照官方文档中的示例创建了我自己类的自定义阴影,但Robolectric没有使用它。
项目在GitHub(branch roboMockitoTutorial)。以下是代码的一些部分:
我尝试创建阴影的类(AppUtils):
package com.jiahaoliuliu.robolectricsample;
/**
* Created by jiahao on 2/15/15.
*/
public class AppUtils {
public AppUtils() {}
public int generateNumberUsersRandomly() {
// :)
return 42;
}
}
使用该类的活动:
package com.jiahaoliuliu.robolectricsample;
import android.graphics.Bitmap;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import java.io.IOException;
import java.io.OutputStream;
public class MainActivity extends ActionBarActivity {
TextView my_hello_text_view;
Button mClickMeBtn;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
AppUtils appUtils = new AppUtils();
System.out.println("The randomly generated number of users is " + appUtils.generateNumberUsersRandomly());
setContentView(R.layout.activity_main);
my_hello_text_view = (TextView) findViewById(R.id.my_hello_text_view);
mClickMeBtn = (Button) findViewById(R.id.clickMeBtn);
int w = 200, h = 200;
Bitmap.Config conf = Bitmap.Config.ARGB_8888; // see other conf types
Bitmap bmp = Bitmap.createBitmap(w, h, conf); // this creates a MUTABLE bitmap
bmp.compress(Bitmap.CompressFormat.PNG, 200, new OutputStream() {
@Override
public void write(int oneByte) throws IOException {
System.out.println("Writting in the outputStream " + oneByte);
}
});
}
public void clickMeBtnPressed(View view) {
my_hello_text_view.setText(getString(R.string.ok_thanks));
}
}
影子类(AppUtilsShadow):
package com.jiahaoliuliu.robolectricsample;
import org.robolectric.annotation.Implementation;
import org.robolectric.annotation.Implements;
import org.robolectric.annotation.RealObject;
import org.robolectric.shadows.ShadowView;
/**
* Created by jiahao on 2/15/15.
*/
@Implements(AppUtils.class)
public class AppUtilsShadow {
@RealObject
private AppUtils appUtils;
public AppUtilsShadow() {}
// Trying to create the constructor for it.
public void __constructor__() {}
@Implementation
public int generateNumberUsersRandomly() {
System.out.println("Invoking the real object method");
return appUtils.generateNumberUsersRandomly();
}
}
测试类:
package com.jiahaoliuliu.robolectricsample;
import com.jiahaoliuliu.robolectricsample.MainActivity;
import com.jiahaoliuliu.robolectricsample.RobolectricGradleTestRunner;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.robolectric.Robolectric;
import org.robolectric.RobolectricTestRunner;
import org.robolectric.annotation.Config;
import java.util.List;
import static org.assertj.android.api.Assertions.assertThat;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;
@RunWith(RobolectricGradleTestRunner.class)
@Config(shadows = {AppUtilsShadow.class, MyShadowBitmap.class})
public class MyActivityTest {
private MainActivity mActivity;
@Before
public void setup() {
mActivity = Robolectric.buildActivity(MainActivity.class).create().get();
}
@Test
public void testMyActivityAppearsAsExpectedInitially() {
assertThat(mActivity.my_hello_text_view).isVisible();
assertThat(mActivity.my_hello_text_view).hasText("Hello world!");
assertThat(mActivity.mClickMeBtn).hasText("Click Me");
}
}
答案 0 :(得分:4)
Shadows的问题是它们用于遮蔽Android类,而不是所有类。请参阅documentation或更好的code。
由于AppUtils不是来自Android SDK,因此您的阴影不会被拾取。
这不是一个缺陷,据我所知,这是一个故意的设计决定。由于这是您自己的类,因此您可以通过更好的方式加载测试类,并且不需要阴影。
也就是说,如果你真的想为此使用阴影,你可以创建一个自定义测试运行器,覆盖shouldInstrument
,使其也可以检测你感兴趣的类或包。然后,你上面的代码应该工作。我从未尝试过此操作,但您可以查看this以获取一些示例代码。