功能性UI测试

apply plugin: 'com.android.application'
android {
    compileSdkVersion 25
    buildToolsVersion "25.0.2"
    defaultConfig {
        applicationId "com.example.administrator.test"
        minSdkVersion 14
        targetSdkVersion 25
        versionCode 1
        versionName "1.0"
        //添加Instrumentation测试依赖
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    //添加Instrumentation测试依赖
    packagingOptions {
        exclude 'LICENSE.txt'
    }
}
dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    compile 'com.android.support:appcompat-v7:26.0.0-alpha1'
    compile 'com.google.android.gms:play-services:4.2.42'
    testCompile 'junit:junit:4.12'
    //添加Instrumentation测试依赖
    androidTestCompile 'com.android.support.test:runner:0.2'
    androidTestCompile 'com.android.support.test:rules:0.2'
    androidTestCompile 'com.android.support.test.espresso:espresso-core:2.1'
}

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/textView"
        android:textColor="@color/color_green"
        android:text="@string/hello_world"/>
    <EditText
        android:id="@+id/editText"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@id/textView"
        android:textColor="@color/color_green"
        android:hint="Enter your name here"/>
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Say hello!"
        android:layout_below="@id/editText"
        android:onClick="sayHello"/>
</RelativeLayout>

/**
 * @author 林思旭
 * @since 2017/11/12
 */
public class InstrumentActivity extends Activity{
    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_instrumentation);
    }
    public void sayHello(View v){
        TextView textView = (TextView)findViewById(R.id.textView);
        EditText editText = (EditText)findViewById(R.id.editText);
        textView.setText("Hello,"+editText.getText().toString()+"!");
    }
}

package com.example.administrator.test;
import android.support.test.rule.ActivityTestRule;
import android.support.test.runner.AndroidJUnit4;
import android.test.suitebuilder.annotation.LargeTest;
import com.example.administrator.test.activity.InstrumentActivity;
import org.junit.Rule;
import org.junit.Test;
import org.junit.runner.RunWith;
import static android.support.test.espresso.Espresso.onView;
import static android.support.test.espresso.action.ViewActions.click;
import static android.support.test.espresso.action.ViewActions.closeSoftKeyboard;
import static android.support.test.espresso.action.ViewActions.typeText;
import static android.support.test.espresso.assertion.ViewAssertions.matches;
import static android.support.test.espresso.matcher.ViewMatchers.withId;
import static android.support.test.espresso.matcher.ViewMatchers.withText;
/**
 * @author 林思旭
 * @since 2017/11/13
 */
@RunWith(AndroidJUnit4.class)
@LargeTest
public class InstrumentActvityInstrumentationTest{
    private static final String content = "magic";
    //需要被测试的UI界面对应的Activity（需要测试的目标）
    @Rule
    public ActivityTestRule<InstrumentActivity> mActivityRule = new
            ActivityTestRule<InstrumentActivity>(InstrumentActivity.class);
    @Test
    public void sayHello(){
        onView(withId(R.id.editText)).perform(typeText("m"));
        onView(withId(R.id.editText)).perform(typeText("a"));
        onView(withId(R.id.editText)).perform(typeText("g"));
        onView(withId(R.id.editText)).perform(typeText("i"));
        onView(withId(R.id.editText)).perform(typeText("c"),closeSoftKeyboard());
        onView(withText("Say hello!")).perform(click());
        String expected = "Hello,"+content+"!";
        //检测textView上显示的结果是否和预期想的一样
        onView(withId(R.id.textView)).check(matches(withText(expected)));
    }
}

configurations.all {
    resolutionStrategy {
        force 'com.android.support:support-annotations:24.1.1'
    }
}