feat: import Chinese-localized Buzz source snapshot

Signed-off-by: cls_宁波本机 <908705107@qq.com>
2026-08-13 18:34:25 +08:00
parent 61c3fa1df9
commit 9dfa06ffee
3785 changed files with 1085458 additions and 2 deletions
@@ -0,0 +1,51 @@
+# UIKit media fixtures
+
+These 2 x 2 fixtures were produced on an iOS simulator with UIKit, not by a generic image encoder.
+
+## Regeneration
+
+1. Create a small source image and run this program against the simulator SDK:
+
+   ```swift
+   import Foundation
+   import UIKit
+
+   let arguments = CommandLine.arguments
+   let source = try Data(contentsOf: URL(fileURLWithPath: arguments[1]))
+   guard
+     let image = UIImage(data: source),
+     let png = image.pngData(),
+     let jpeg = image.jpegData(compressionQuality: 1.0)
+   else {
+     fatalError("UIKit could not encode the source image")
+   }
+   try png.write(to: URL(fileURLWithPath: arguments[2]))
+   try jpeg.write(to: URL(fileURLWithPath: arguments[3]))
+   ```
+
+   Compile and run it with the active Xcode toolchain:
+
+   ```sh
+   SDK_PATH="$(xcrun --sdk iphonesimulator --show-sdk-path)"
+   xcrun --sdk iphonesimulator swiftc \
+     -sdk "$SDK_PATH" \
+     -target arm64-apple-ios16.0-simulator \
+     reencode.swift -o reencode
+   xcrun simctl spawn booted ./reencode \
+     source.png uikit-encoded.png uikit-encoded.jpg
+   ```
+
+2. Copy the encoded files into both fixture directories:
+
+   ```sh
+   cp uikit-encoded.png mobile/ios/RunnerTests/Fixtures/UIKitEncoded.png
+   cp uikit-encoded.jpg mobile/ios/RunnerTests/Fixtures/UIKitEncoded.jpg
+   cp uikit-encoded.png crates/buzz-media/tests/fixtures/ios/
+   cp uikit-encoded.jpg crates/buzz-media/tests/fixtures/ios/
+   ```
+
+3. Add a temporary Runner test that loads `UIKitEncoded.png` and `UIKitEncoded.jpg`, calls `MediaSanitizer.scrubPng` and `MediaSanitizer.scrubJpeg`, and writes those outputs to `uikit-sanitized.png` and `uikit-sanitized.jpg`. Run it once, copy the files here, then remove the temporary test.
+4. Run `cmp` on each encoded copy to confirm that the Runner and Rust fixtures are byte-identical.
+5. Run `cargo test -p buzz-media test_ios_uikit` to verify that UIKit's encoded output is rejected and the matching sanitizer output is accepted by the relay contract.
+
+Regenerate both encoded and sanitized pairs whenever UIKit encoding or `MediaSanitizer` changes. Do not update only the sanitized files, because the test is intended to cover the exact encoder-to-sanitizer boundary.