Qml TestCase: mouseDrag adds starting position twice

// 
function mouseDrag(item, x, y, dx, dy, button, modifiers, delay) {
    if (!qtest_verifyItem(item, "mouseDrag"))
        return

    if (item.x === undefined || item.y === undefined)
        return
    if (button === undefined)
        button = Qt.LeftButton
    if (modifiers === undefined)
        modifiers = Qt.NoModifier
    if (delay === undefined)
        delay = -1
    let moveDelay = Math.max(1, delay === -1 ? qtest_events.defaultMouseDelay : delay)

    // Divide dx and dy to have intermediate mouseMove while dragging
    // Fractions of dx/dy need be superior to the dragThreshold
    // to make the drag works though
    let intermediateDx = Math.round(dx/3)
    if (Math.abs(intermediateDx) < (util.dragThreshold + 1))
        intermediateDx = 0
    let intermediateDy = Math.round(dy/3)
    if (Math.abs(intermediateDy) < (util.dragThreshold + 1))
        intermediateDy = 0

    mousePress(item, x, y, button, modifiers, delay)

    // Trigger dragging by dragging past the drag threshold, but making sure to only drag
    // along a certain axis if a distance greater than zero was given for that axis.
    let dragTriggerXDistance = dx > 0 ? (util.dragThreshold + 1) : 0
    let dragTriggerYDistance = dy > 0 ? (util.dragThreshold + 1) : 0
    mouseMove(item, x + dragTriggerXDistance, y + dragTriggerYDistance, moveDelay, button, modifiers)
    if (intermediateDx !== 0 || intermediateDy !== 0) {
        mouseMove(item, x + intermediateDx, y + intermediateDy, moveDelay, button, modifiers)
        mouseMove(item, x + 2*intermediateDx, y + 2*intermediateDy, moveDelay, button, modifiers)
    }
    mouseMove(item, x + dx, y + dy, moveDelay, button, modifiers)
    mouseRelease(item, x + dx, y + dy, button, modifiers, delay)