接入微信分享 SDK 并配置 Universal Link。

集成 WechatOpenSDK、www.zhifly.cn/suixinkan/ 通用链接与邀请页分享能力，附带 AASA 部署文件与单元测试。

Co-authored-by: Cursor <cursoragent@cursor.com>

suixinkanTests/WeChatShareServiceTests.swift

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+//
+//  WeChatShareServiceTests.swift
+//  suixinkanTests
+//
+
+import UIKit
+import XCTest
+@testable import suixinkan
+
+final class WeChatShareServiceTests: XCTestCase {
+    func testUniversalLinkMustEndWithSlash() {
+        XCTAssertTrue(WeChatConfig.validateUniversalLink(WeChatConfig.universalLink))
+        XCTAssertFalse(WeChatConfig.validateUniversalLink("https://www.zhifly.cn/suixinkan"))
+        XCTAssertFalse(WeChatConfig.validateUniversalLink("http://www.zhifly.cn/suixinkan/"))
+    }
+
+    func testShareSceneMapsToWXValues() {
+        XCTAssertEqual(WeChatShareScene.session.wxSceneValue, 0)
+        XCTAssertEqual(WeChatShareScene.timeline.wxSceneValue, 1)
+        XCTAssertEqual(WeChatShareScene.favorite.wxSceneValue, 2)
+    }
+
+    func testShareResultFromWXErrorCode() {
+        XCTAssertEqual(WeChatShareResult.fromWXErrorCode(0), .success)
+        XCTAssertEqual(WeChatShareResult.fromWXErrorCode(-2), .cancelled)
+        XCTAssertEqual(WeChatShareResult.fromWXErrorCode(99), .unknown(99))
+    }
+
+    func testThumbImageCompressionStaysWithinLimit() throws {
+        let size = CGSize(width: 512, height: 512)
+        let format = UIGraphicsImageRendererFormat.default()
+        format.scale = 1
+        let renderer = UIGraphicsImageRenderer(size: size, format: format)
+        let image = renderer.image { context in
+            UIColor.systemBlue.setFill()
+            context.fill(CGRect(origin: .zero, size: size))
+        }
+
+        let thumbData = try XCTUnwrap(WeChatThumbImageProcessor.makeThumbData(from: image))
+        XCTAssertLessThanOrEqual(thumbData.count, WeChatThumbImageProcessor.maxThumbBytes)
+    }
+
+    func testThumbImageResizeReducesLargeImage() {
+        let size = CGSize(width: 800, height: 600)
+        let format = UIGraphicsImageRendererFormat.default()
+        format.scale = 1
+        let renderer = UIGraphicsImageRenderer(size: size, format: format)
+        let image = renderer.image { _ in }
+
+        let resized = WeChatThumbImageProcessor.resize(image, maxPixel: 120)
+        XCTAssertLessThanOrEqual(max(resized.size.width, resized.size.height), 120)
+    }
+
+    func testWebPagePayloadValidationRequiresNonEmptyFields() async {
+        await MainActor.run {
+            let expectation = expectation(description: "invalid title")
+            WeChatShareService.shareWebPage(
+                WeChatWebPageSharePayload(title: " ", description: "desc", url: "https://example.com"),
+                scene: .session
+            ) { result in
+                if case .invalidPayload = result {
+                    expectation.fulfill()
+                }
+            }
+            wait(for: [expectation], timeout: 1)
+        }
+    }
+}