Xcode7 UITest

Xcode7中UITest自动化测试中获取到scrollView后利用swipeUp能让scrollView自动滚动，但怎样控制滚动距离？

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• OC

[scrollView setContentOffset:CGPointMake(x, y) animated:YES];

• Swift

scrollView.contentOffset = CGPoint(x: x, y: y)