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Android Espresso: Make assertion while button is kept pressed

By : stfn
Source: Stackoverflow.com
Question!

I'm quite new to Espresso on Android and I am running into the following problem: I want Espresso to perform a longclick(or something..) on a button, and while the button is kept pressed down, I want to check the state of a different View.

In (more or less) pseudocode:

onView(withId(button_id)).perform(pressButtonDown());
onView(withId(textBox_id)).check(matches(withText("Button is pressed")));
onView(withId(button_id)).perform(releaseButton());

I tried writing 2 custom Taps, PRESS and RELEASE, with MotionEvents.sendDown() and .sendUp(), but did not get it to work. If this is the right path, I can post the code I've got so far.

Edit:

public class PressViewActions
{
    public static ViewAction pressDown(){
        return new GeneralClickAction(HoldTap.DOWN, GeneralLocation.CENTER, Press.THUMB);
    }

    public static ViewAction release() {
        return new GeneralClickAction(HoldTap.UP, GeneralLocation.CENTER, Press.THUMB);
    }
}

And the code for the Tappers:

public enum HoldTap implements Tapper {

    DOWN {
        @Override
        public Tapper.Status sendTap(UiController uiController, float[] coordinates, float[] precision)
        {
            checkNotNull(uiController);
            checkNotNull(coordinates);
            checkNotNull(precision);

            DownResultHolder res = MotionEvents.sendDown(uiController, coordinates, precision);

            ResultHolder.setController(uiController);
            ResultHolder.setResult(res);

            return Status.SUCCESS;
        }
    },

    UP{
        @Override
        public Tapper.Status sendTap(UiController uiController, float[] coordinates, float[] precision)
        {
            DownResultHolder res = ResultHolder.getResult();
            UiController controller = ResultHolder.getController();

            try {
                if(!MotionEvents.sendUp(controller, res.down))
                {
                    MotionEvents.sendCancel(controller, res.down);
                    return Status.FAILURE;
                }

            }
            finally {
                //res.down.recycle();
            }

            return Status.SUCCESS;
        }
    }
}

The error I get is the following:

android.support.test.espresso.PerformException: Error performing 'up click' on view 'with id: de.test.app:id/key_ptt'.
...
...
Caused by: java.lang.RuntimeException: Couldn't click at: 281.5,1117.5 precision: 25.0, 25.0 . Tapper: UP coordinate provider: CENTER precision describer: THUMB. Tried 3 times. With Rollback? false

I hope, this helps.

Any help and ideas will be appreciated!

Tanks a lot in advance!

By : stfn


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