ActivityMvpDelegateImplTest.java

/*
 *  Copyright 2015 Hannes Dorfmann.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package com.hannesdorfmann.mosby3.mvp.delegate;

import android.app.Activity;
import android.app.Application;
import android.os.Bundle;
import com.hannesdorfmann.mosby3.mvp.MvpPresenter;
import com.hannesdorfmann.mosby3.mvp.MvpView;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.mockito.Mockito;
import org.mockito.junit.MockitoJUnit;
import org.mockito.junit.MockitoRule;

/**
 * @author Hannes Dorfmann
 */
public class ActivityMvpDelegateImplTest {

  @Rule public MockitoRule mockitoRule = MockitoJUnit.rule();

  private MvpView view;
  private MvpPresenter<MvpView> presenter;
  private PartialMvpDelegateCallbackImpl callback;
  private Activity activity;
  private Application application;

  @Before public void initComponents() {
    view = new MvpView() {
    };

    presenter = Mockito.mock(MvpPresenter.class);
    callback = Mockito.mock(PartialMvpDelegateCallbackImpl.class);
    activity = Mockito.mock(Activity.class);
    application = Mockito.mock(Application.class);

    Mockito.doCallRealMethod().when(callback).setPresenter(presenter);
    Mockito.doCallRealMethod().when(callback).getPresenter();
    Mockito.when(callback.getMvpView()).thenReturn(view);
    Mockito.when(activity.getApplication()).thenReturn(application);

    Mockito.when(callback.createPresenter()).thenReturn(presenter);
  }

  @Test public void appStartWithScreenOrientationChangeAndFinallyFinishing() {

    ActivityMvpDelegateImpl<MvpView, MvpPresenter<MvpView>> delegate =
        new ActivityMvpDelegateImpl<>(activity, callback, true);

    startActivity(delegate, null, 1, 1, 1);
    Bundle bundle = BundleMocker.create();
    finishActivity(delegate, bundle, true, 1, true, false);
    startActivity(delegate, bundle, 1, 2, 2);
    finishActivity(delegate, bundle, false, 1, false, true);
  }

  @Test public void appStartFinishing() {
    ActivityMvpDelegateImpl<MvpView, MvpPresenter<MvpView>> delegate =
        new ActivityMvpDelegateImpl<>(activity, callback, true);

    startActivity(delegate, null, 1, 1, 1);
    Bundle bundle = BundleMocker.create();
    finishActivity(delegate, bundle, false, 1, false, true);
  }

  @Test public void dontKeepPresenter() {
    ActivityMvpDelegateImpl<MvpView, MvpPresenter<MvpView>> delegate =
        new ActivityMvpDelegateImpl<>(activity, callback, false);
    startActivity(delegate, null, 1, 1, 1);
    Bundle bundle = BundleMocker.create();
    finishActivity(delegate, bundle, false, 1, true, false);
    startActivity(delegate, bundle, 2, 2, 2);
    finishActivity(delegate, bundle, false, 2, false, true);
  }

  private void startActivity(ActivityMvpDelegateImpl<MvpView, MvpPresenter<MvpView>> delegate,
      Bundle bundle, int createPresenter, int setPresenter, int attachView) {

    delegate.onCreate(bundle);
    delegate.onContentChanged();
    delegate.onPostCreate(bundle);
    delegate.onStart();
    delegate.onResume();

    Mockito.verify(callback, Mockito.times(createPresenter)).createPresenter();
    Mockito.verify(callback, Mockito.times(setPresenter)).setPresenter(presenter);
    Mockito.verify(presenter, Mockito.times(attachView)).attachView(view);
  }

  private void finishActivity(ActivityMvpDelegateImpl<MvpView, MvpPresenter<MvpView>> delegate,
      Bundle bundle, boolean expectKeepPresenter, int detachViewCount,
      boolean changingConfigurations, boolean isFinishing) {
    Mockito.when(callback.getPresenter()).thenReturn(presenter);
    Mockito.when(activity.isChangingConfigurations()).thenReturn(changingConfigurations);
    Mockito.when(activity.isFinishing()).thenReturn(isFinishing);

    delegate.onPause();
    delegate.onSaveInstanceState(bundle);
    delegate.onStop();
    delegate.onDestroy();
    delegate.onRestart();

    Mockito.verify(presenter, Mockito.times(detachViewCount)).detachView(expectKeepPresenter);
  }
}