Click-drag on XCUIElement category method

XCUIElement+Additions.m

- (void)clickAtPoint:(CGPoint)pointInElement thenDragTo:(CGPoint)point2InElement
{
    CGRect frame = self.frame;
    CGFloat width = CGRectGetWidth(frame);
    CGFloat height = CGRectGetHeight(frame);
    
    XCUICoordinate *coord1 = [self coordinateWithNormalizedOffset:CGVectorMake(pointInElement.x / width, pointInElement.y / height)];
    XCUICoordinate *coord2 = [coord1 coordinateWithOffset:CGVectorMake(point2InElement.x - pointInElement.x, point2InElement.y - pointInElement.y)];
    
    [coord1 clickForDuration:0.1 thenDragToCoordinate:coord2];
}