I haven't found any way to automate multi-touch movements in uiautomator tests
Given it's framework of com.android.uiautomator.* classes, how can I automate multi-touch movements?
Update 01 March 2017 When I first answered this question the current documentation for Android-17 e.g. http://developer.android.com/tools/help/uiautomator/UiObject.html did not seem to provide any way to provide multi-touch or other complex gestures such as pinch & zoom.
However as @Project pointed out, multitouch gestures are now supported. https://developer.android.com/reference/androidx/test/uiautomator/UiObject#performmultipointergesture
I have not tested this capability, at this stage.