How to manage Runtime permissions android marshmallow espresso tests -

i'm using espresso testing try image form external storage , marshmallow need runtime permission otherwise there exception crash , test fail.

androidtestcompile 'com.android.support.test:runner:0.4' androidtestcompile 'com.android.support.test:rules:0.4' androidtestcompile 'com.android.support.test.espresso:espresso-core:2.2.1' androidtestcompile 'com.android.support.test.espresso:espresso-intents:2.2.1' androidtestcompile('com.android.support.test.espresso:espresso-contrib:2.2.1') {     // library uses newest app compat v22 espresso contrib still v21.     // have exclude older versions of contrib library or     // there conflicts     exclude group: 'com.android.support', module: 'appcompat'     exclude group: 'com.android.support', module: 'support-v4'     exclude module: 'recyclerview-v7' } androidtestcompile 'junit:junit:4.12' androidtestcompile 'com.squareup.retrofit:retrofit-mock:1.9.0' androidtestcompile 'com.squareup.assertj:assertj-android:1.1.0' androidtestcompile 'com.squareup.spoon:spoon-client:1.2.0' 

how can manage right?

should write test runtime permissions or there's way disable testing?

should give permissions before tests run says here? https://www.youtube.com/watch?list=plwz5rj2ekkc-ljo_rggxl2psr8vvctwjm&v=c8ludpvszdk

you can create android gradle task grant permission:

android.applicationvariants.all { variant ->     def applicationid = variant.applicationid     def adb = android.getadbexe().tostring()     def variantname = variant.name.capitalize()     def grantpermissiontask = tasks.create("grant${variantname}permissions") << {         "${adb} devices".execute().text.eachline {             if (it.endswith("device")){                 def device = it.split()[0]                 println "granting permissions on devices ${device}"                 "${adb} -s ${device} shell pm grant ${applicationid} android.permission.camera".execute()                 "${adb} -s ${device} shell pm grant ${applicationid} android.permission.access_fine_location".execute()             }         }     } } 

and command run task: gradle grantdebugpermissions