java.lang.NoClassDefFoundError: android.databinding.DataBinderMapperImpl when running Espresso tests

Question

Data binding setup:

apply plugin: \'kotlin-kapt\'

android {
    dataBinding {
        enabled = true
    }
}

dependencies {
    kapt \"com.android.databind         


        

Answer 1

A bit late, but I resolved this issue by adding DataBinding compiler with kapt as a test dependency:

kaptAndroidTest 'androidx.databinding:databinding-compiler:3.3.2'

Or the version not from AndroidX if your project is not using Jetpack yet.