//
//  MJRefreshSupportTests.swift
//  suixinkanTests
//
//  Created by Codex on 2026/6/26.
//

import XCTest
@testable import suixinkan

/// MJRefresh SwiftUI 桥接测试，覆盖滚动视图查找辅助逻辑。
final class MJRefreshSupportTests: XCTestCase {
    /// 测试锚点视图能向上找到最近的 UIScrollView。
    func testEnclosingScrollViewFindsParentScrollView() {
        let scrollView = UIScrollView(frame: CGRect(x: 0, y: 0, width: 320, height: 480))
        let container = UIView(frame: scrollView.bounds)
        let anchor = UIView(frame: .zero)
        scrollView.addSubview(container)
        container.addSubview(anchor)

        XCTAssertIdentical(anchor.enclosingScrollView, scrollView)
    }

    /// 测试没有父级 ScrollView 时返回 nil。
    func testEnclosingScrollViewReturnsNilWithoutScrollView() {
        let view = UIView(frame: .zero)
        XCTAssertNil(view.enclosingScrollView)
    }
}

extension MJRefreshSupportTests {
    /// 断言两个对象引用相同。
    fileprivate func XCTAssertIdentical(_ expression1: AnyObject?, _ expression2: AnyObject?, file: StaticString = #filePath, line: UInt = #line) {
        if expression1 !== expression2 {
            XCTFail("Expected identical objects", file: file, line: line)
        }
    }
}