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AndroidLibraryModuleTest.java

/*
 * Copyright 2015, The Android Open Source Project
 *
 * 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.example.android.testing.blueprint.androidlibrarymodule;

import android.content.Context;
import android.support.test.InstrumentationRegistry;
import android.support.test.runner.AndroidJUnit4;
import android.test.suitebuilder.annotation.MediumTest;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;

import static org.hamcrest.CoreMatchers.equalTo;
import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.CoreMatchers.notNullValue;
import static org.junit.Assert.assertThat;

/**
 * The Android library module's own tests, independent from the main app.
 */
@RunWith(AndroidJUnit4.class)
@MediumTest
public class AndroidLibraryModuleTest {

private Context mContext;

@Before
  public void initTargetContext() {
    mContext = InstrumentationRegistry.getTargetContext();
    assertThat(mContext, notNullValue());
  }

@Test
  public void verifyResourceFromLibrary() {
    assertThat(mContext.getString(R.string.library_module_hello_world),
            is(equalTo("Hello from an Android library module!")));
  }

@Test
  public void verifyClassFromLibrary() {
    AndroidLibraryModuleClass libraryModuleInstance = new AndroidLibraryModuleClass();
    assertThat(libraryModuleInstance.isReady(), is(true));
  }
}