fix: 增加登录失效确认弹窗

suixinkanTests/SessionExpiredDialogViewControllerTests.swift

@@ -0,0 +1,62 @@
+//
+//  SessionExpiredDialogViewControllerTests.swift
+//  suixinkanTests
+//
+
+import UIKit
+import XCTest
+@testable import suixinkan
+
+/// 登录失效弹窗测试，覆盖强制展示配置、Android 对齐文案与确认防重。
+@MainActor
+final class SessionExpiredDialogViewControllerTests: XCTestCase {
+
+    func testDialogUsesForcedPresentationAndAndroidCopy() throws {
+        let dialog = SessionExpiredDialogViewController(onConfirm: {})
+        dialog.loadViewIfNeeded()
+
+        XCTAssertEqual(dialog.modalPresentationStyle, .overFullScreen)
+        XCTAssertEqual(dialog.modalTransitionStyle, .crossDissolve)
+        XCTAssertTrue(dialog.isModalInPresentation)
+        XCTAssertTrue(dialog.view.accessibilityViewIsModal)
+
+        let labels = dialog.view.allSubviews(of: UILabel.self)
+        XCTAssertTrue(labels.contains { $0.text == "登录提醒" })
+        XCTAssertTrue(labels.contains { $0.text == "当前用户已在其他设备登录，\n请重新登录" })
+
+        let button = try XCTUnwrap(
+            dialog.view.allSubviews(of: UIButton.self).first {
+                $0.accessibilityIdentifier == "sessionExpired.confirmButton"
+            }
+        )
+        XCTAssertEqual(button.title(for: .normal), "确认并退出登录")
+    }
+
+    func testConfirmCallbackOnlyRunsOnce() throws {
+        var confirmationCount = 0
+        let dialog = SessionExpiredDialogViewController {
+            confirmationCount += 1
+        }
+        dialog.loadViewIfNeeded()
+        let button = try XCTUnwrap(
+            dialog.view.allSubviews(of: UIButton.self).first {
+                $0.accessibilityIdentifier == "sessionExpired.confirmButton"
+            }
+        )
+
+        button.sendActions(for: .touchUpInside)
+        button.sendActions(for: .touchUpInside)
+
+        XCTAssertEqual(confirmationCount, 1)
+        XCTAssertFalse(button.isEnabled)
+    }
+}
+
+private extension UIView {
+    func allSubviews<View: UIView>(of type: View.Type) -> [View] {
+        subviews.flatMap { subview -> [View] in
+            let current = (subview as? View).map { [$0] } ?? []
+            return current + subview.allSubviews(of: type)
+        }
+    }
+}