CODEWITHSUNDEEP
androidandroid-espresso
Med.J
Med.J

Reputation: 71

Espresso tests in android studio

it is possible to write a Espresso test in android studio outside the application's code ? i read in the Espresso documentation that is possible to create a black-box tests with espresso but i dont find how to do it

Upvotes: 2

Views: 619

Answers (4)

Abdul Ahad
Abdul Ahad

Reputation: 1

Yes, It is possible to write an Espresso test in the android studio outside the application's code.

All the test classes excluding instrumental test should be in the (test) folder as shown in the picture below

image

Below is an example test class that checks whether the login is correct or not using the espresso test.

@RunWith(AndroidJUnit4.class)
public class MainActivityTest {

    @Rule
    public ActivityTestRule<MainActivity> activityRule
                = new ActivityTestRule<>(MainActivity.class);

    @Test
    public void testLoginSuccess() {

        onView(withId(R.id.et_username)).perform(typeText("testuser"), closeSoftKeyboard());

        onView(withId(R.id.et_password)).perform(typeText("test123"), closeSoftKeyboard());

        onView(withId(R.id.btn_login)).perform(click());

        onView(withId(R.id.tv_welcome)).check(matches(isDisplayed()));
    }   
}

I wrote an explanation about it in my blog with a simple login example here.

Upvotes: 0

Akshay Mahajan
Akshay Mahajan

Reputation: 2200

You can use UI Automator for cross-app functional UI testing, for example, interacting with a GPS dialog box created using SettingsAPI. Read more about it here.

enter image description here Click the OK button like this :-

/** UI Automator Google GPS dialog box */
UiDevice mDevice = UiDevice.getInstance(InstrumentationRegistry.getInstrumentation());
UiObject uiObject = mDevice.findObject(new UiSelector().text("OK"));
try {
  uiObject.click();
}catch (UiObjectNotFoundException e) {
  e.printStackTrace();
}

Upvotes: 1

Med.J
Med.J

Reputation: 71

Create a separate project with the following dependencies:

compile 'com.android.support.test.espresso:espresso-core:2.2.2'
compile 'com.android.support.test:runner:0.5'
compile 'junit:junit:4.12'

i Use this manifest

<?xml version="1.0" encoding="utf-8"?>
<manifest package="com.test.test"xmlns:android="http://schemas.android.com/apk/res/android">

    <instrumentation
        android:name="android.support.test.runner.AndroidJUnitRunner"
        android:targetPackage="com.imc.imc" >
    <instrumentation>

 </manifest>

i create a new class in src/main/java/com.test.test named MainActivityTest

public class MainActivityTest {


    @Rule
    public ActivityTestRule<?> mActivityRule = newActivityTestRule("com.imc.imc.MainActivity");

    @NonNull
    private ActivityTestRule newActivityTestRule(String className) {
        return new ActivityTestRule(activityClass(className));
    }

    private static Class<? extends Activity> activityClass(String className) {
        try {
            return (Class<? extends Activity>) Class.forName(className);
        } catch (ClassNotFoundException e) {
            throw new RuntimeException(e);
        }
    }
private static int getId(String id) {
    Context targetContext = InstrumentationRegistry.getTargetContext();
    String packageName = targetContext.getPackageName();
    return targetContext.getResources().getIdentifier(id, "id", packageName);
}

    @Test
    public void mytest() {
        onView(withId(getId("button"))).perform(click());;
    }


}

but it does not work !!!!!!

Upvotes: 1

Vyacheslav Pedak
Vyacheslav Pedak

Reputation: 437

Take a look at our discussion thread at reddit, there is one solution for this.

Also I am developing a plugin for Android Studio that will make this easy. You can subscribe for news about it and I will notify you when it will be ready.

Upvotes: 0

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