LocalPresenterTest.java

package com.arellomobile.mvp.tests;

import java.lang.reflect.Field;

import android.os.Bundle;

import com.arellomobile.mvp.MvpDelegate;
import com.arellomobile.mvp.MvpPresenter;
import com.arellomobile.mvp.presenter.InjectViewStatePresenter;
import com.arellomobile.mvp.presenter.NoViewStatePresenter;
import com.arellomobile.mvp.view.DelegateLocalPresenterTestView;
import com.arellomobile.mvp.view.TestView;

import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.robolectric.RobolectricTestRunner;
import org.robolectric.annotation.Config;


import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotEquals;
import static org.junit.Assert.assertTrue;
import static org.mockito.Mockito.mock;

/**
 * Date: 09.02.2016
 * Time: 12:37
 *
 * @author Savin Mikhail
 */
@RunWith(RobolectricTestRunner.class)
@Config(manifest = Config.NONE)
public class LocalPresenterTest {
	@Mock
	TestView mTestView;

	DelegateLocalPresenterTestView mDelegateLocalPresenterTestView = new DelegateLocalPresenterTestView();
	DelegateLocalPresenterTestView mDelegateLocalPresenter2TestView = new DelegateLocalPresenterTestView();

	MvpDelegate<? extends TestView> mTestViewMvpDelegate = new MvpDelegate<>(mDelegateLocalPresenterTestView);
	MvpDelegate<? extends TestView> mTestViewMvpDelegate2 = new MvpDelegate<>(mDelegateLocalPresenter2TestView);


	@Before
	public void setup() {
		mTestView = mock(TestView.class);

		mTestViewMvpDelegate.onCreate(null);
		mTestViewMvpDelegate.onAttach();

		mTestViewMvpDelegate2.onCreate(null);
		mTestViewMvpDelegate2.onAttach();
	}

	@After
	public void reset() {
		mTestViewMvpDelegate.onDetach();
		mTestViewMvpDelegate.onDestroy();

		mTestViewMvpDelegate2.onDetach();
		mTestViewMvpDelegate2.onDestroy();
	}

	@Test
	public void checkWithInjectViewState() {
		InjectViewStatePresenter injectViewStatePresenter = new InjectViewStatePresenter();
		injectViewStatePresenter.attachView(mTestView);
		try {
			Field mViewState = MvpPresenter.class.getDeclaredField("mViewState");

			mViewState.setAccessible(true);
			assertTrue("ViewState is null for InjectViewStatePresenter", mViewState.get(injectViewStatePresenter) != null);
		} catch (IllegalAccessException | NoSuchFieldException e) {
			assertFalse(e.getLocalizedMessage(), true);
		}
	}

	@Test
	public void checkWithoutViewState() {
		NoViewStatePresenter noViewStatePresenter = new NoViewStatePresenter();
		noViewStatePresenter.attachView(mTestView);
		try {
			Field mViewState = MvpPresenter.class.getDeclaredField("mViewState");

			mViewState.setAccessible(true);
			assertTrue("ViewState is not null for NoViewStatePresenter", mViewState.get(noViewStatePresenter) == null);
		} catch (IllegalAccessException | NoSuchFieldException e) {
			assertFalse(e.getLocalizedMessage(), true);
		}
	}

	@Test
	public void checkDelegatePresenter() {
		assertTrue("Presenter is null for delegate", mDelegateLocalPresenterTestView.mInjectViewStatePresenter != null);
	}

	@Test
	public void checkLocalPresenters() {
		assertNotEquals("Local Presenters for two different view is equal", mDelegateLocalPresenterTestView.mInjectViewStatePresenter.hashCode(), mDelegateLocalPresenter2TestView.mInjectViewStatePresenter.hashCode());
	}

	@Test
	public void checkSaveState() {
		int hashCode = mDelegateLocalPresenterTestView.mInjectViewStatePresenter.hashCode();

		Bundle bundle = new Bundle();

		mTestViewMvpDelegate.onSaveInstanceState(bundle);
		mTestViewMvpDelegate.onDetach();
		mTestViewMvpDelegate.onDestroy();

		mTestViewMvpDelegate.onCreate(bundle);
		mTestViewMvpDelegate.onAttach();

		//TODO: should be passed! Or change test
		//assertTrue("Local presenter has different hashCode after recreate", hashCode == mDelegateLocalPresenterTestView.mInjectViewStatePresenter.hashCode());

		mTestViewMvpDelegate.onDetach();
		mTestViewMvpDelegate.onDestroy();

		mTestViewMvpDelegate.onCreate();
		mTestViewMvpDelegate.onAttach();

		assertFalse("Local presenter has same hashCode after creating new view", hashCode == mDelegateLocalPresenterTestView.mInjectViewStatePresenter.hashCode());
	}
}