Run Test in android studio with UI test cases

Question

I am trying to add UI test cases in my current working app. For that I have added this in app/src/androidtest/java/com.testapp

import androidx.test.espresso.Espresso.onView
import androidx.test.espresso.action.ViewActions.*
import androidx.test.espresso.matcher.ViewMatchers.withId
import androidx.test.ext.junit.runners.AndroidJUnit4
import androidx.test.platform.app.InstrumentationRegistry
import org.junit.Assert.assertEquals
import org.junit.Test
import org.junit.runner.RunWith

/**
 * Instrumented test, which will execute on an Android device.
 *l
 * See [testing documentation](http://d.android.com/tools/testing).
 */
@RunWith(AndroidJUnit4::class)
class ExampleInstrumentedTest {


    @Test
    fun loginActivityTest() {
// Type text and then press the button.
        onView(withId(R.id.editTextUserName)).perform(typeText(STRING_EMAIL),
                closeSoftKeyboard())
        onView(withId(R.id.editTextUserPassword)).perform(typeText(STRING_PASSWORD),
                closeSoftKeyboard())
        onView(withId(R.id.btnLoginSigin)).perform(click())

        // This view is in a different Activity, no need to tell Espresso.
//        onView(withId(R.id.show_text_view)).check(matches(withText(STRING_TO_BE_TYPED)))
    }

    companion object {
        val STRING_EMAIL = "test@test.com"
        val STRING_PASSWORD = "test1234"
    }
}

Added in build.gradle :

// Testing-only dependencies
androidTestImplementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
androidTestImplementation 'androidx.test:core:' + rootProject.coreVersion
androidTestImplementation 'androidx.test:core-ktx:' + rootProject.coreVersion
androidTestImplementation 'androidx.test.ext:junit:' + rootProject.extJUnitVersion
androidTestImplementation 'androidx.test.ext:junit-ktx:' + rootProject.extJUnitVersion
androidTestImplementation 'androidx.test:runner:' + rootProject.runnerVersion
androidTestImplementation 'androidx.test.espresso:espresso-core:' + rootProject.espressoVersion

testImplementation 'androidx.test:core:' + rootProject.coreVersion;
testImplementation 'androidx.test.ext:junit:' + rootProject.extJUnitVersion
testImplementation 'junit:junit:4.12'
testImplementation 'org.robolectric:robolectric:' + rootProject.robolectricVersion
testImplementation 'androidx.test.espresso:espresso-core:' + rootProject.espressoVersion
testImplementation 'androidx.test.espresso:espresso-intents:' + rootProject.espressoVersion
testImplementation 'androidx.test.ext:truth:' + rootProject.extTruthVersion


//Test
buildToolsVersion = "28.0.3"
androidxLibVersion = "1.0.0"
robolectricVersion = "4.3"
extTruthVersion = '1.3.0-alpha02'
coreVersion = "1.2.1-alpha02"
extJUnitVersion = "1.1.2-alpha02"
runnerVersion = "1.3.0-alpha02"
espressoVersion = "3.3.0-alpha02"

But after editing configuration to run test class only. I am getting error :

    Task :app:compileappnameqaDebugAndroidTestJavaWithJavac FAILED
F:\test_project\Android_new\app\build\generated\source\buildConfig\androidTest\debug\com\appname\test\BuildConfig.java:17: error: cannot find symbol
  public static final int appIcon = R.mipmap.ic_launcher;
                                     ^
  symbol:   variable mipmap
  location: class R
F:\test_project\Android_new\app\build\generated\source\buildConfig\androidTest\debug\test\com\appname\test\BuildConfig.java:23: error: cannot find symbol
  public static final int splashImage = R.drawable.splash;
                                         ^
  symbol:   variable drawable
  location: class R
2 errors

Can anyone please help me how to know how to run the UI test case in my app?

have you tried cleaning the project and building it again? also invalidate and restarting Androi studio? — Sushant Somani, Nov 27 '19 at 07:29

score 1 · Accepted Answer · answered Nov 27 '19 at 10:05

After Adding line :

@get:Rule val activityRule = activityScenarioRule<LoginActivity>()

Still I was facing same issue.Then I copied those drawable and mipmap files created res/drawable and res/mipmap and pasted those files in folders. Which in result removed the BuildConfig error. Then I started facing error :

Command line is too long. Shorten command line for 'testconfiguration' or also for Android JUnit default Configuration

To overcome this : select option "classpath file" in test Configuration setup, Which will run the test.

score 0 · Answer 2 · answered Nov 27 '19 at 07:41

From the instrumented test case ExampleInstrumentedTest, I cannot find where you have launched the activity wherein you are simulating user actions. Please try launching the activity first & then execute test case. For example if your activity is LoginActivity

    @RunWith(AndroidJUnit4.class)
    public class SampleTest {

      @Rule
      public ActivityTestRule<LoginActivity> activityRule 
         = new ActivityTestRule<>(
            LoginActivity.class,
            true,     // initialTouchMode
            false);   // launchActivity. False to customize the intent

      @Test
      public void loginActivityTest() {
        Intent intent = new Intent();
        activityRule.launchActivity(intent);

onView(withId(R.id.editTextUserName)).perform(typeText(STRING_EMAIL),
                closeSoftKeyboard())
        onView(withId(R.id.editTextUserPassword)).perform(typeText(STRING_PASSWORD),
                closeSoftKeyboard())
        onView(withId(R.id.btnLoginSigin)).perform(click())
      }
    }

@get:Rule val activityRule = activityScenarioRule() Added this. But facing another issue after that "Command line is too long. Shorten command line for 'testconfiguration' or also for Android JUnit default Configuration " — Apurva Kolapkar, Nov 27 '19 at 08:16
try this https://stackoverflow.com/questions/47926382/how-to-configure-shorten-command-line-method-for-whole-project-in-intellij — Sushant Somani, Nov 27 '19 at 08:28

Run Test in android studio with UI test cases

2 Answers2