安卓UI测试（基于Android Studio的Espresso框架）

XML文件

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     xmlns:tools="http://schemas.android.com/tools"
 4     android:layout_width="match_parent"
 5     android:layout_height="match_parent"
 6     android:orientation="vertical"
 7     tools:context="cn.edu.niit.testforgit.MainActivity">
 8 
 9     <TextView
10         android:id="@+id/textView"
11         android:layout_width="match_parent"
12         android:layout_height="wrap_content"
13         android:text="Hello"
14         android:textAlignment="center" />
15 
16     <EditText
17         android:id="@+id/editText"
18         android:layout_width="match_parent"
19         android:layout_height="wrap_content"
20         android:layout_below="@+id/textView"
21         android:hint="Enter your name here" />
22 
23     <Button
24         android:id="@+id/button"
25         android:layout_width="match_parent"
26         android:layout_height="wrap_content"
27         android:text="Say hello!" />
28 </LinearLayout>

MainActivity代码

 1 package cn.edu.niit.testforgit;
 2 
 3 import android.support.v7.app.AppCompatActivity;
 4 import android.os.Bundle;
 5 import android.view.View;
 6 import android.widget.Button;
 7 import android.widget.EditText;
 8 import android.widget.TextView;
 9 
10 public class MainActivity extends AppCompatActivity implements View.OnClickListener {
11 
12     private TextView textView;
13     private EditText editText;
14     private Button button;
15 
16     @Override
17     protected void onCreate(Bundle savedInstanceState) {
18         super.onCreate(savedInstanceState);
19         setContentView(R.layout.activity_main);
20         sayHello();
21     }
22 
23     public void sayHello() {
24         textView = (TextView) findViewById(R.id.textView);
25         editText = (EditText) findViewById(R.id.editText);
26         button = (Button) findViewById(R.id.button);
27         button.setOnClickListener(this);
28     }
29 
30     @Override
31     public void onClick(View v) {
32         switch (v.getId()) {
33             case R.id.button:
34                 textView.setText("Hello," + editText.getText().toString() + "!");
35                 editText.setText("");
36                 break;
37         }
38     }
39 }

MainActivity测试代码MainActivityInstrumentationTest代码

 1 package cn.edu.niit.testforgit;
 2 
 3 import android.support.test.filters.LargeTest;
 4 import android.support.test.rule.ActivityTestRule;
 5 import android.support.test.runner.AndroidJUnit4;
 6 
 7 import org.junit.Rule;
 8 import org.junit.Test;
 9 import org.junit.runner.RunWith;
10 
11 import static android.support.test.espresso.Espresso.onView;
12 import static android.support.test.espresso.action.ViewActions.click;
13 import static android.support.test.espresso.action.ViewActions.closeSoftKeyboard;
14 import static android.support.test.espresso.action.ViewActions.typeText;
15 import static android.support.test.espresso.assertion.ViewAssertions.matches;
16 import static android.support.test.espresso.matcher.ViewMatchers.withId;
17 import static android.support.test.espresso.matcher.ViewMatchers.withText;
18 
19 
20 /**
21  * Created by Wang Yifan on 2017/03/15.
22  */
23 
24 @RunWith(AndroidJUnit4.class)
25 @LargeTest
26 public class MainActivityInstrumentationTest {
27     private static final String STRING_TO_BE_TYPED = "Peter";
28     @Rule
29     public ActivityTestRule<MainActivity> mActivityRule = new ActivityTestRule<>(
30             MainActivity.class);
31 
32     @Test
33     public void sayHello() {
34         onView(withId(R.id.editText)).perform(typeText(STRING_TO_BE_TYPED), closeSoftKeyboard());
35         onView(withText("Say hello!")).perform(click());
36         String expectedText = "Hello," + STRING_TO_BE_TYPED + "!";
37         onView(withId(R.id.textView)).check(matches(withText(expectedText)));
38     }
39 }

测试结果