Checking if test run in interactive session

Question

How can you make an assumption that checks if a test is executed in an interactive session?

FEST robot clicks and such are ignored on the CI server now since the session is not interactive, but I don't want to hard-codedly @Disable them. I would rather execute some assumption that tests if my BasicRobot can do anything at all. I refer to org.fest.swing.core.BasicRobot / org.assertj.swing.core.BasicRobot.

I would rather avoid displaying an auxiliary Window @BeforeEach (or even @BeforeAll).

This, on the other hand, relies on an initial pointer location which makes it a bit fragile.

    @BeforeEach
    void testRobot() {
        PointerInfo initialPointerInfo = MouseInfo.getPointerInfo();
        Point initialLocation = initialPointerInfo.getLocation();
        robot.moveMouse(initialLocation.x + 5, initialLocation.y + 5);
        PointerInfo subsequentPointerInfo = MouseInfo.getPointerInfo();
        Point subsequentLocation = subsequentPointerInfo.getLocation();
        assumeFalse(Objects.equals(initialLocation, subsequentLocation), "Robot commands ignored. Non-interactive session?");
    }

Please note it is not about headless / not headless (the server does have a graphic environment).

Java 8.

Sergey Zolotarev · Accepted Answer · 2025-09-05 12:21:13Z

    private boolean interactionPossible() {
        PointerInfo initialPointerInfo = MouseInfo.getPointerInfo();
        Point initialLocation = initialPointerInfo.getLocation();
        Point requestedLocation = getRandomPointOnScreen();
        robot.moveMouse(requestedLocation);
        PointerInfo subsequentPointerInfo = MouseInfo.getPointerInfo();
        Point subsequentLocation = subsequentPointerInfo.getLocation();
        boolean robotMovedPointer = !Objects.equals(initialLocation, subsequentLocation);
        return robotMovedPointer;
    }

    private Point getRandomPointOnScreen() {
        Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
        Random random = new Random();
        int x = random.nextInt(screenSize.width);
        int y = random.nextInt(screenSize.height);
        Point point = new Point(x, y);
        return point;
    }

There's a vanishingly small possibility that a new point is identical to the current point. However, it arguably could be neglected.

UPD: For some reason, on our CI server, a first mouse move positions the cursor in an entirely different (seemingly random) point, not the one the robot requested. Subsequent mouse moves are, as expected, ignored due to a non-interactive session. Locally, though, my solution works.

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