1Welcome to our tests! 2 3unit tests are under the 'unit/' dir, function under 'functional/'. 4 5Some of the test cases in functional/ check the file operation among the different storage media. 6Therefore, insert SD Card media to the test device when running this instrumentation test if the 7device has SD Card slot. If SD Card is not inserted or supported, the test creates virtual SD Card 8and uses it instead. 9 10To run just small tests" 11adb shell am instrument -w -e debug false -e log false -e timeout_msec 300000 -e size small com.android.documentsui.tests/androidx.test.runner.AndroidJUnitRunner 12 13Replace '-e size small' with '-e size large'. 14