在 UI 测试中执行完整的向左滑动操作? [英] Perform a full swipe left action in UI Tests?

问题描述

我已经在表格视图中实现了前导和尾随滑动操作.现在，我正在尝试在 XCTest UI 测试中测试它们.

I have implemented leading and trailing swipe actions in a table view. Now, I'm trying to test them in XCTest UI tests.

要测试在任一方向上的常规滑动很容易:

To test a regular swipe in either direction is easy:

tableCell.swipeRight()
tableCell.swipeLeft()

使用其中之一会显示第一个操作按钮，然后我可以在按钮上.tap().

Using one of these causes the 1st action button to be displayed, and I can then .tap() on the button.

然而，测试完全滑动被证明更具挑战性.我玩过这个扩展swift-how-do-i-swipe-faster-or-more-precisely">如何更快或更精确地滑动?

However, testing a full swipe is proving a little more challenging. I have played with this extension from How do I swipe faster or more precisely?

我也玩过 这个答案 问题问题/37158631/xcode7-ui-testing-statictextsxx-swiperight-swipes-not-far-enough">Xcode7 ui 测试:staticTexts[XX"].swipeRight() 滑动不够远.

I have also played with this answer from the question Xcode7 ui testing: staticTexts["XX"].swipeRight() swipes not far enough.

这两个基本上都使用 XCUIElement 的坐标(withNormalizedOffset:)从一个点滑动到另一个点的方法，类似如下:

Both of these essentially use XCUIElement's coordinate(withNormalizedOffset:) method to swipe from one point to another, similar to the following:

let startPoint = tableCell.coordinate(withNormalizedOffset: CGVector.zero)
let finishPoint = startPoint.withOffset(CGVector(dx:xOffsetValue, dy:yOffsetValue))
startPoint.press(forDuration: 0, thenDragTo: finishPoint)

我最终得到了一个扩展，它成功地执行了完全向右滑动 - 但我似乎无法为完全向左滑动获得正确的数字.

I ended up with an extension that successfully performs a full swipe right - but I can't seem to get the numbers right for a full swipe left.

我的代码确实向左滑动，但做得还不够远.我已经尝试了 dx: 从 -300 到 300 的硬编码数字.元素宽度是 414.我相信 0 是最左边的，而 414 是最右边的，所以我开始使用它尺寸作为参考.仍然没有快乐.

My code does perform a swipe left, but just doesn't go far enough. I've tried hardcoded numbers for dx: from -300 to 300. The element width is 414. I believe that 0 is the far left, and 414 would be the far right, so I started using that size as a reference. Still, no joy.

我怎样才能让它向左完整滑动?

How can I get this to perform a full swipe left?

extension XCUIElement
{
    enum SwipeDirection {
        case left, right
    }

    func longSwipe(_ direction : SwipeDirection) {
        let elementLength = self.frame.size.width
        let centerPoint: CGFloat = elementLength / 2.0
        let halfCenterValue: CGFloat = centerPoint / 2.0

        let startOffset: CGVector
        let endOffset: CGVector
        switch direction {
        case .right:  // this one works perfectly!
            startOffset = CGVector.zero
            endOffset = CGVector(dx: centerPoint + halfCenterValue, dy: 0)
        }
        case .left:  // "There's the rub" as Hamlet might say...
            startOffset = CGVector(dx: centerPoint + halfCenterValue, dy: 0)
            endOffset = CGVector.zero

        let startPoint = self.coordinate(withNormalizedOffset: startOffset)
        let finishPoint = startPoint.withOffset(endOffset)
        startPoint.press(forDuration: 0, thenDragTo: finishPoint)
    }
}

推荐答案

知道了！

• 首先，我不需要使用单元格的框架大小.标准化"部分意味着您可以使用从 0.0 到 1.0 的值来表示元素大小的百分比.

• First, I didn't need to use the frame size of the cell. The "normalized" part means that you can use values from 0.0 to 1.0 to represent a percentage of an element's size.

其次，调整大小，我发现长滑动需要移动单元格宽度的 60% 左右才能激活操作.

Second, playing with the sizes, I found a long swipe needs to move about 60% of the width of the cell in order to activate the action.

我由此产生的长滑动扩展:

My resulting long swipe extension:

extension XCUIElement
{
    enum SwipeDirection {
        case left, right
    }

    func longSwipe(_ direction : SwipeDirection) {
        let startOffset: CGVector
        let endOffset: CGVector

        switch direction {
        case .right:
            startOffset = CGVector.zero
            endOffset = CGVector(dx: 0.6, dy: 0.0)
        case .left:
            startOffset = CGVector(dx: 0.6, dy: 0.0)
            endOffset = CGVector.zero
        }

        let startPoint = self.coordinate(withNormalizedOffset: startOffset)
        let endPoint = self.coordinate(withNormalizedOffset: endOffset)
        startPoint.press(forDuration: 0, thenDragTo: endPoint)
    }
}

注意:CGVector.zero 是 CGVector(dx: 0.0, dy: 0.0)

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