android {
    defaultConfig {
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }
}

dependencies {
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.6.1'
    androidTestImplementation 'androidx.test.espresso:espresso-contrib:3.6.1'
    androidTestImplementation 'androidx.test.espresso:espresso-intents:3.6.1'
    androidTestImplementation 'androidx.test.ext:junit:1.2.1'
    androidTestImplementation 'androidx.test:runner:1.6.2'
    androidTestImplementation 'androidx.test:rules:1.6.1'
}

import androidx.test.ext.junit.rules.ActivityScenarioRule;
import androidx.test.ext.junit.runners.AndroidJUnit4;
import org.junit.Rule;
import org.junit.Test;
import org.junit.runner.RunWith;

import static androidx.test.espresso.Espresso.onView;
import static androidx.test.espresso.action.ViewActions.*;
import static androidx.test.espresso.assertion.ViewAssertions.*;
import static androidx.test.espresso.matcher.ViewMatchers.*;

@RunWith(AndroidJUnit4.class)
public class LoginTest {
    @Rule
    public ActivityScenarioRule<LoginActivity> activityRule =
        new ActivityScenarioRule<>(LoginActivity.class);

    @Test
    public void loginWithValidCredentials() {
        onView(withId(R.id.email)).perform(typeText("alice@example.com"), closeSoftKeyboard());
        onView(withId(R.id.password)).perform(typeText("pass123"), closeSoftKeyboard());
        onView(withId(R.id.login_button)).perform(click());
        onView(withId(R.id.dashboard_title)).check(matches(isDisplayed()));
    }
}