MultiDexTestRunner.java

package com.android.test.runner;

import android.os.Bundle;
import android.support.multidex.MultiDex;
import android.test.InstrumentationTestRunner;

public class MultiDexTestRunner extends InstrumentationTestRunner {
    @Override
    public void onCreate(Bundle arguments) {
        MultiDex.install(getTargetContext());
        super.onCreate(arguments);
    }
}