Mockito cannot mock/spy final class about dexopener

[tmurakami]

If you want to test view module, could you try the following steps?

1. Create a dummy BuildConfig in your view/src/androidTest directory.

// Kotlin
package com.example.yourapp // root package of three modules

object BuildConfig {
    const val APPLICATION_ID = "com.example.yourapp.view" // the applicationId of `view` module
}

2. Create custom AndroidJUnitRunner in your view/src/androidTest directory.

// Kotlin
package com.example.yourapp.view.test

class CustomJUnitRunner : AndroidJUnitRunner() {
    override fun newApplication(cl: ClassLoader, className: String?, context: Context): Application {
        DexOpener.builder(context)
            .buildConfig(com.example.yourapp.BuildConfig::class.java) // Set the BuildConfig created at #1
            .build()
            .installTo(cl)
        return super.newApplication(cl, className, context)
    }
}

3. Specify CustomJUnitRunner as the default test runner in your view/build.gradle.

android {
    defaultConfig {
        testInstrumentationRunner 'com.example.yourapp.view.test.CustomJUnitRunner'
    }
}

[JorgeCastilloPrz]

And what would you do if the class to mock is defined on another module, and the module is pure kotlin / java? (no android {} block on build.gradle) @tmurakami

Did you find any workaround @vicpinm ?

[tmurakami]

I have just released version 2.0.0-alpha01 which fixed this issue. You can now manually specify your root package. Please see the README and the examples for more information.

[JorgeCastilloPrz]

😍 thanks!