Valdemar Lorenzen
26 lines
1.1 KiB
Swift
26 lines
1.1 KiB
Swift
import AppKit
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import Testing
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@testable import Conjure
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@Test @MainActor
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func launcherFadesStayAtViewportEdgesAfterScrollingAndResizing() throws {
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_ = NSApplication.shared
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let scroll = LauncherScrollView(frame: NSRect(x: 0, y: 0, width: 200, height: 120))
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scroll.documentView = NSView(frame: NSRect(x: 0, y: 0, width: 200, height: 600))
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for height in [120, 240] {
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scroll.frame.size.height = CGFloat(height)
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scroll.contentView.scroll(to: NSPoint(x: 0, y: 80))
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scroll.layoutSubtreeIfNeeded()
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let mask = try #require(scroll.layer?.mask)
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let context = try #require(CGContext(data: nil, width: 200, height: height,
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bitsPerComponent: 8, bytesPerRow: 800, space: CGColorSpaceCreateDeviceRGB(),
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bitmapInfo: CGImageAlphaInfo.premultipliedLast.rawValue))
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mask.render(in: context)
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let pixels = try #require(context.data?.assumingMemoryBound(to: UInt8.self))
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func alpha(_ y: Int) -> UInt8 { pixels[y * 800 + 100 * 4 + 3] }
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#expect(alpha(0) < 20)
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#expect(alpha(height / 2) == 255)
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#expect(alpha(height - 1) < 20)
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}
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}
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