Android Testing Example - MainActivity

MainActivity.kt

package com.coderefer.androidtestingexamples

import android.support.v7.app.AppCompatActivity
import android.os.Bundle
import kotlinx.android.synthetic.main.activity_main.*

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        button.setOnClickListener({
            textView.text = "hello"
        })
    }
}