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Merge pull request #411 from yuuki3655/orchestrator_with_coverage_example
Add an example project that demonstrates how to use Jacoco test cover…
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‎runner/AndroidTestOrchestratorWithTestCoverageSample/.gitignore‎

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.gradle
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/local.properties
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.idea
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*.iml
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.DS_Store
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build

‎runner/AndroidTestOrchestratorWithTestCoverageSample/README.md‎

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# AndroidTestOrchestrator with test coverage sample
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The Android Test Orchestrator allows you to run each of your app's tests in isolation, enabling greater reliability.
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See https://developer.android.com/training/testing/junit-runner#using-android-test-orchestrator for more background.
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This sample is a subset of the AndroidJUnitRunner sample, but it
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illustrates how to enable Jacoco test coverage report with the Android Test Orchestrator in the app/build.gradle file.
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This project uses the Gradle build system. You don't need an IDE to build and execute it but Android Studio is recommended.
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1. Download the project code, preferably using `git clone`.
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1. Open the Android SDK Manager (*Tools* Menu | *Android*).
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1. In Android Studio, select *File* | *Open...* and point to the top-level `./build.gradle` file.
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1. Check out the relevant code:
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* The application under test is located in `src/main/java`
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* Tests are in `src/androidTest/java`
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1. Connect a device or start an emulator:
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* Turn animations off.
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(On your device, under Settings->Developer options disable the following 3 settings: "Window animation scale", "Transition animation scale" and "Animator duration scale")
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1. Run the newly created configuration.
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The application will be started on the device/emulator and a series of actions will be performed automatically.
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If you are using Android Studio, the *Run* window will show the test results.
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The test coverage report will be generated in `app/build/reports/coverage/androidTest/debug/index.html`.

‎runner/AndroidTestOrchestratorWithTestCoverageSample/app/build.gradle‎

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apply plugin: 'com.android.application'
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android {
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compileSdkVersion 31
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buildToolsVersion rootProject.buildToolsVersion
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defaultConfig {
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applicationId "com.example.android.testing.androidtestorchestratorsample"
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minSdkVersion 14
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targetSdkVersion 31
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versionCode 1
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versionName "1.0"
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testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
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testInstrumentationRunnerArguments clearPackageData: 'true'
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testInstrumentationRunnerArguments useTestStorageService: 'true'
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}
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buildTypes {
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debug {
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testCoverageEnabled true
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}
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}
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testOptions {
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execution 'ANDROIDX_TEST_ORCHESTRATOR'
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}
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}
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dependencies {
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// App's dependencies, including test
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implementation 'androidx.annotation:annotation:' + rootProject.androidxAnnotationVersion
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implementation 'com.google.guava:guava:' + rootProject.guavaVersion
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// Testing-only dependencies
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androidTestImplementation 'androidx.test:core:' + rootProject.coreVersion
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androidTestImplementation 'androidx.test.ext:junit:' + rootProject.extJUnitVersion
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androidTestImplementation 'androidx.test:runner:' + rootProject.runnerVersion
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androidTestImplementation 'androidx.test.espresso:espresso-core:' + rootProject.espressoVersion
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androidTestUtil 'androidx.test:orchestrator:' + rootProject.runnerVersion
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androidTestUtil 'androidx.test.services:test-services:' + rootProject.testServicesVersion
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}

‎runner/AndroidTestOrchestratorWithTestCoverageSample/app/src/androidTest/java/com/example/android/testing/androidtestorchestratorsample/CalculatorAddParameterizedTest.java‎

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/*
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* Copyright 2020, The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.example.android.testing.androidtestorchestratorsample;
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import org.junit.Before;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import org.junit.runners.Parameterized;
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import androidx.test.filters.SmallTest;
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import java.lang.Iterable;
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import java.util.Arrays;
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import static org.hamcrest.CoreMatchers.equalTo;
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import static org.hamcrest.CoreMatchers.is;
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import static org.junit.Assert.assertThat;
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import static org.junit.runners.Parameterized.Parameters;
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/**
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* JUnit4 tests for the calculator's add logic.
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*
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* <p> This test uses a Junit4s Parameterized tests features which uses annotations to pass
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* parameters into a unit test. The way this works is that you have to use the {@link Parameterized}
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* runner to run your tests.
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* </p>
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*/
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@RunWith(Parameterized.class)
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@SmallTest
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public class CalculatorAddParameterizedTest {
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/**
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* @return {@link Iterable} that contains the values that should be passed to the constructor.
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* In this example we are going to use three parameters: operand one, operand two and the
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* expected result.
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*/
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@Parameters
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public static Iterable<Object[]> data() {
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return Arrays.asList(new Object[][]{
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{0, 0, 0},
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{0, -1, -1},
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{2, 2, 4},
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{8, 8, 16},
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{16, 16, 32},
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{32, 0, 32},
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{64, 64, 128}});
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}
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private final double mOperandOne;
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private final double mOperandTwo;
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private final double mExpectedResult;
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private Calculator mCalculator;
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/**
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* Constructor that takes in the values specified in
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* {@link CalculatorAddParameterizedTest#data()}. The values need to be saved to fields in order
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* to reuse them in your tests.
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*/
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public CalculatorAddParameterizedTest(double operandOne, double operandTwo,
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double expectedResult) {
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mOperandOne = operandOne;
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mOperandTwo = operandTwo;
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mExpectedResult = expectedResult;
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}
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@Before
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public void setUp() {
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mCalculator = new Calculator();
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}
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@Test
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public void testAdd_TwoNumbers() {
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double resultAdd = mCalculator.add(mOperandOne, mOperandTwo);
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assertThat(resultAdd, is(equalTo(mExpectedResult)));
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}
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}

‎runner/AndroidTestOrchestratorWithTestCoverageSample/app/src/androidTest/java/com/example/android/testing/androidtestorchestratorsample/CalculatorInstrumentationTest.java‎

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/*
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* Copyright 2020, The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.example.android.testing.androidtestorchestratorsample;
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import junit.framework.TestSuite;
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import org.junit.Before;
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import org.junit.Test;
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import org.junit.internal.builders.AllDefaultPossibilitiesBuilder;
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import org.junit.runner.RunWith;
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import androidx.test.core.app.ActivityScenario;
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import androidx.test.ext.junit.runners.AndroidJUnit4;
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import androidx.test.filters.LargeTest;
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import androidx.test.runner.AndroidJUnitRunner;
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import static androidx.test.core.app.ApplicationProvider.getApplicationContext;
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import static androidx.test.espresso.Espresso.onView;
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import static androidx.test.espresso.action.ViewActions.click;
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import static androidx.test.espresso.action.ViewActions.closeSoftKeyboard;
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import static androidx.test.espresso.action.ViewActions.typeText;
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import static androidx.test.espresso.assertion.ViewAssertions.matches;
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import static androidx.test.espresso.matcher.ViewMatchers.withId;
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import static androidx.test.espresso.matcher.ViewMatchers.withText;
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/**
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* JUnit4 Ui Tests for {@link CalculatorActivity} using the {@link AndroidJUnitRunner} with the
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* Android Test Orchestrator.
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* This class uses the JUnit4 syntax for tests.
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* <p>
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* With the new AndroidJUnit runner you can run both JUnit3 and JUnit4 tests in a single test
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* suite. The {@link AndroidRunnerBuilder} which extends JUnit's
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* {@link AllDefaultPossibilitiesBuilder} will create a single {@link
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* TestSuite} from all tests and run them.
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*/
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@RunWith(AndroidJUnit4.class)
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@LargeTest
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public class CalculatorInstrumentationTest {
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/**
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* Use {@link ActivityScenario} to create and launch of the activity.
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*/
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@Before
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public void launchActivity() {
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ActivityScenario.launch(CalculatorActivity.class);
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}
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@Test
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public void noOperandShowsComputationError() {
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final String expectedResult = getApplicationContext().getString(R.string.computationError);
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onView(withId(R.id.operation_add_btn)).perform(click());
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onView(withId(R.id.operation_result_text_view)).check(matches(withText(expectedResult)));
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}
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@Test
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public void typeOperandsAndPerformAddOperation() {
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performOperation(R.id.operation_add_btn, "16.0", "16.0", "32.0");
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}
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@Test
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public void typeOperandsAndPerformSubOperation() {
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performOperation(R.id.operation_sub_btn, "32.0", "16.0", "16.0");
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}
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@Test
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public void typeOperandsAndPerformDivOperation() {
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performOperation(R.id.operation_div_btn, "128.0", "16.0", "8.0");
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}
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@Test
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public void divZeroForOperandTwoShowsError() {
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final String expectedResult = getApplicationContext().getString(R.string.computationError);
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performOperation(R.id.operation_div_btn, "128.0", "0.0", expectedResult);
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}
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@Test
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public void typeOperandsAndPerformMulOperation() {
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performOperation(R.id.operation_mul_btn, "16.0", "16.0", "256.0");
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}
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private void performOperation(int btnOperationResId, String operandOne,
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String operandTwo, String expectedResult) {
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// Type the two operands in the EditText fields
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onView(withId(R.id.operand_one_edit_text)).perform(typeText(operandOne),
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closeSoftKeyboard());
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onView(withId(R.id.operand_two_edit_text)).perform(typeText(operandTwo),
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closeSoftKeyboard());
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// Click on a given operation button
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onView(withId(btnOperationResId)).perform(click());
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// Check the expected test is displayed in the Ui
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onView(withId(R.id.operation_result_text_view)).check(matches(withText(expectedResult)));
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}
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}

‎runner/AndroidTestOrchestratorWithTestCoverageSample/app/src/main/AndroidManifest.xml‎

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<?xml version="1.0" encoding="utf-8"?>
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<!--
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Copyright 2020 The Android Open Source Project
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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<manifest xmlns:android="http://schemas.android.com/apk/res/android"
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package="com.example.android.testing.androidtestorchestratorsample" >
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<application
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android:icon="@drawable/ic_launcher"
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android:label="@string/app_name"
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android:theme="@style/AppTheme" >
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<activity
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android:name=".CalculatorActivity"
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android:label="@string/app_name"
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android:exported="true" >
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<intent-filter>
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<action android:name="android.intent.action.MAIN" />
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<category android:name="android.intent.category.LAUNCHER" />
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</intent-filter>
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</activity>
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</application>
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</manifest>

‎runner/AndroidTestOrchestratorWithTestCoverageSample/app/src/main/java/com/example/android/testing/androidtestorchestratorsample/Calculator.java‎

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/*
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* Copyright 2020, The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.example.android.testing.androidtestorchestratorsample;
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import static com.google.common.base.Preconditions.checkArgument;
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/**
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* A simple calculator with a basic set of operations.
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*/
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public class Calculator {
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public enum Operator {ADD, SUB, DIV, MUL}
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/**
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* Addition operation
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*/
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public double add(double firstOperand, double secondOperand) {
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return firstOperand + secondOperand;
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}
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/**
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* Substract operation
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*/
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public double sub(double firstOperand, double secondOperand) {
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return firstOperand - secondOperand;
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}
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/**
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* Divide operation
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*/
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public double div(double firstOperand, double secondOperand) {
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checkArgument(secondOperand != 0, "secondOperand must be != 0, you cannot divide by zero");
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return firstOperand / secondOperand;
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}
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/**
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* Multiply operation
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*/
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public double mul(double firstOperand, double secondOperand) {
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return firstOperand * secondOperand;
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}
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}

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