How to run UI Tests with modules and dynamic feature

Question

I'm currently playing around with the dynamic features. I'm not able to run any UI tests.

My app has three modules as shown on the diagram:

• app - the usual module
• dynamicFeatureA - the dynamic feature module. It must depend on app. That's a requirement when implementing dynamic features
• shared - a module containing some shared logic and 3rd party libraries. All my testing / mocking libraries are here as well

Down below you will find the build.gradle files for each of the modules.

app

plugins {
    id 'com.android.application'
    id 'kotlin-android'
    id 'kotlin-android-extensions'
    id 'com.google.gms.google-services'
    id 'com.google.firebase.crashlytics'
}

android {
    compileSdkVersion 29
    buildToolsVersion "30.0.3"

    defaultConfig {
        applicationId "com.test.test"
        minSdkVersion 26
        targetSdkVersion 29
        versionCode 7
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
            debuggable = false
        }
    }

    flavorDimensions "environment"
    productFlavors {
        dev {
            dimension "environment"
            applicationIdSuffix ".dev"
        }
        prod {
            dimension "environment"
        }
    }

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
    kotlinOptions {
        jvmTarget = '1.8'
    }
    dynamicFeatures = [':dynamicFeatureA']
}

dependencies {
    implementation project(':shared')

    // Firebase
    implementation platform('com.google.firebase:firebase-bom:25.12.0')
    implementation 'com.google.firebase:firebase-analytics-ktx'
    implementation 'com.google.firebase:firebase-crashlytics'
    implementation 'com.google.firebase:firebase-auth-ktx'

    api 'com.google.android.play:core:1.9.0'
} 

shared

plugins {
    id 'com.android.library'
    id 'kotlin-android'
    id 'kotlin-android-extensions'
}

android {
    compileSdkVersion 29
    buildToolsVersion "30.0.3"

    defaultConfig {
        minSdkVersion 26
        targetSdkVersion 29
        versionCode 7
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
        consumerProguardFiles "consumer-rules.pro"
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
    kotlinOptions {
        jvmTarget = '1.8'
    }
}

dependencies {

    // Retrofit + OkHttp
    api 'com.squareup.retrofit2:retrofit:2.6.2'
    api 'com.squareup.retrofit2:converter-gson:2.1.0'
    api 'com.squareup.okhttp3:logging-interceptor:4.2.1'

    // Tests
    api("junit:junit:4.13.1")
    api 'androidx.test.ext:junit:1.1.2'
    api 'androidx.test.espresso:espresso-core:3.3.0'
    api "androidx.arch.core:core-testing:2.1.0"
    api "io.mockk:mockk:1.10.4"
    api 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.4.2'
    api "io.mockk:mockk-android:1.10.4"
    api 'com.squareup.okhttp3:mockwebserver:4.2.2'
    api 'androidx.test.uiautomator:uiautomator:2.2.0'
    api 'androidx.test.ext:junit:1.1.2'
    api 'androidx.test:runner:1.3.0'
    api 'androidx.test:rules:1.3.0'
    api 'androidx.test:core:1.3.0'
    api 'androidx.test.ext:truth:1.3.0'

    // Kotlin
    api "org.jetbrains.kotlin:kotlin-stdlib:1.4.10"
    api 'androidx.core:core-ktx:1.3.2'
    api 'org.jetbrains.kotlinx:kotlinx-coroutines-play-services:1.1.1'
    api 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.4.2'
    api 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.4'

    api 'androidx.appcompat:appcompat:1.2.0'
    api 'com.google.android.material:material:1.2.1'

    api "androidx.constraintlayout:constraintlayout:2.0.4"
}

dynamicFeatureA

plugins {
    id 'com.android.dynamic-feature'
    id 'kotlin-android'
    id 'kotlin-android-extensions'
}
android {
    compileSdkVersion 29
    buildToolsVersion "30.0.3"

    defaultConfig {
        applicationId "com.test.test"
        minSdkVersion 26
        targetSdkVersion 29
        versionCode 7
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }

    flavorDimensions "environment"
    productFlavors {
        dev {
            dimension "environment"
            applicationIdSuffix ".dev"
        }
        prod {
            dimension "environment"
        }
    }

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
}

dependencies {
    implementation project(":app")
    implementation project(":shared")
}

When trying to run my UI tests I get the following errors

Android resource linking failed
/.gradle/caches/transforms-2/files-2.1/d3cf80163c3f5e54a1f3dc792b3bfaac/jetified-core-1.9.0/AndroidManifest.xml:13:5-226: AAPT: error: resource style/Theme.PlayCore.Transparent (aka com.test.test.dev.test:style/Theme.PlayCore.Transparent) not found.
    
/.gradle/caches/transforms-2/files-2.1/2bbe030940076efec6cce94c1a3439fe/jetified-play-services-basement-17.0.0/AndroidManifest.xml:23:9-25:69: AAPT: error: resource integer/google_play_services_version (aka com.test.test.dev.test:integer/google_play_services_version) not found.