rocky
03bfbbe08b
- Invite opens an appearance-matched poster with the app icon, inviter name, QR code, and short code; tap for a full-brightness QR view; save (add-only Photos access), share, or copy the link. Mac shows the poster in a popover and can save it as PNG. - Accounts get look-alike-free 8-character codes. "I have a code" accepts a code, link, or pasted message during the server-defined binding window. - Permanently rejected redemptions show a specific message and drop the stored code instead of retrying on every sign-in.
124 lines
4.4 KiB
Swift
124 lines
4.4 KiB
Swift
// InvitePosterTests.swift
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// OSGKeyboardTests
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//
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// The poster is only useful if a camera can read it back, so these tests
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// decode the generated QR code instead of only checking that an image exists.
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import CoreImage
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@testable import OSGKeyboard
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import OSGKeyboardShared
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import XCTest
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final class InvitePosterTests: XCTestCase {
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private let inviteURL = URL(
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string: "https://osglab.com/i/Abcdefghij_1234567890-?source=server"
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)!
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func testQRCodeDecodesToTheExactInvitationLink() throws {
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let image = try XCTUnwrap(InviteQRCode.makeImage(for: inviteURL))
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XCTAssertEqual(decodedMessages(in: image), [inviteURL.absoluteString])
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}
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@MainActor
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func testPosterExportsAtFixedSizeAndStaysScannable() throws {
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let poster = try XCTUnwrap(
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InvitePosterRenderer.render(
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inviteURL: inviteURL,
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inviterName: nil,
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language: .chinese,
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colorScheme: .light
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)
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)
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XCTAssertEqual(poster.width, 1080)
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XCTAssertEqual(poster.height, 1440)
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XCTAssertEqual(decodedMessages(in: poster), [inviteURL.absoluteString])
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XCTAssertGreaterThan(cornerLuminance(of: poster), 0.95)
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}
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@MainActor
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func testDarkPosterWithShortCodeAndLongNameStaysScannable() throws {
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let poster = try XCTUnwrap(
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InvitePosterRenderer.render(
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inviteURL: inviteURL,
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shortCode: "K7M2-Q9XA",
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inviterName: "一位用户名比较长但仍然需要完整显示的朋友",
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language: .chinese,
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colorScheme: .dark
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)
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)
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XCTAssertEqual(poster.width, 1080)
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XCTAssertEqual(poster.height, 1440)
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XCTAssertEqual(decodedMessages(in: poster), [inviteURL.absoluteString])
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XCTAssertGreaterThan(
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darkPixelFraction(
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in: poster,
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crop: CGRect(x: 300, y: 600, width: 480, height: 500)
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),
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0.15
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)
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// The graphite paper carries a subtle daylight wash, but remains
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// distinctly dark rather than approaching the warm-paper surface.
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XCTAssertLessThan(cornerLuminance(of: poster), 0.18)
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}
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private func decodedMessages(in image: CGImage) -> [String] {
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let detector = CIDetector(
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ofType: CIDetectorTypeQRCode,
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context: nil,
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options: [CIDetectorAccuracy: CIDetectorAccuracyHigh]
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)
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return (detector?.features(in: CIImage(cgImage: image)) ?? [])
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.compactMap { ($0 as? CIQRCodeFeature)?.messageString }
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}
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private func cornerLuminance(of image: CGImage) -> Double {
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guard let corner = image.cropping(to: CGRect(x: 0, y: 0, width: 1, height: 1)) else {
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return -1
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}
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var pixel = [UInt8](repeating: 0, count: 4)
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let context = CGContext(
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data: &pixel,
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width: 1,
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height: 1,
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bitsPerComponent: 8,
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bytesPerRow: 4,
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space: CGColorSpaceCreateDeviceRGB(),
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bitmapInfo: CGImageAlphaInfo.premultipliedLast.rawValue
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)
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context?.draw(corner, in: CGRect(x: 0, y: 0, width: 1, height: 1))
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return (0.2126 * Double(pixel[0])
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+ 0.7152 * Double(pixel[1])
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+ 0.0722 * Double(pixel[2])) / 255
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}
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private func darkPixelFraction(in image: CGImage, crop: CGRect) -> Double {
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guard let cropped = image.cropping(to: crop) else { return 0 }
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let width = 120
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let height = 120
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var pixels = [UInt8](repeating: 0, count: width * height * 4)
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guard let context = CGContext(
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data: &pixels,
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width: width,
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height: height,
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bitsPerComponent: 8,
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bytesPerRow: width * 4,
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space: CGColorSpaceCreateDeviceRGB(),
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bitmapInfo: CGImageAlphaInfo.premultipliedLast.rawValue
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) else {
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return 0
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}
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context.interpolationQuality = .none
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context.draw(cropped, in: CGRect(x: 0, y: 0, width: width, height: height))
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let darkCount = (0..<(width * height)).count { index in
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let offset = index * 4
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return Int(pixels[offset])
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+ Int(pixels[offset + 1])
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+ Int(pixels[offset + 2]) < 3 * 100
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}
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return Double(darkCount) / Double(width * height)
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}
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}
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