//
//  SplashCoordinatorTests.swift
//  suixinkanTests
//
//  Created by Codex on 2026/6/29.
//

import XCTest
@testable import suixinkan

@MainActor
/// 启动页协调器测试，覆盖最短展示时长、bootstrap 并行和 UI Test 跳过策略。
final class SplashCoordinatorTests: XCTestCase {
    /// 测试 bootstrap 完成后仍需等待最短展示时长。
    func testStartWaitsForMinimumDisplayDuration() async {
        let coordinator = SplashCoordinator(minimumDisplayDuration: 0.2, skipsMinimumDuration: false)
        let startedAt = Date()

        await coordinator.start {
            try? await Task.sleep(nanoseconds: 10_000_000)
        }

        XCTAssertTrue(coordinator.isFinished)
        XCTAssertGreaterThanOrEqual(Date().timeIntervalSince(startedAt), 0.19)
    }

    /// 测试 bootstrap 耗时超过最短展示时长时，以 bootstrap 完成时间为准。
    func testStartWaitsForSlowBootstrap() async {
        let coordinator = SplashCoordinator(minimumDisplayDuration: 0.05, skipsMinimumDuration: false)
        let startedAt = Date()

        await coordinator.start {
            try? await Task.sleep(nanoseconds: 150_000_000)
        }

        XCTAssertTrue(coordinator.isFinished)
        XCTAssertGreaterThanOrEqual(Date().timeIntervalSince(startedAt), 0.14)
    }

    /// 测试 UI Test 模式会跳过最短展示时长。
    func testStartSkipsMinimumDurationWhenRequested() async {
        let coordinator = SplashCoordinator(minimumDisplayDuration: 1.0, skipsMinimumDuration: true)
        let startedAt = Date()

        await coordinator.start {
            try? await Task.sleep(nanoseconds: 10_000_000)
        }

        XCTAssertTrue(coordinator.isFinished)
        XCTAssertLessThan(Date().timeIntervalSince(startedAt), 0.2)
    }

    /// 测试重复调用 start 不会重置已完成状态。
    func testStartIsIdempotentAfterFinished() async {
        let coordinator = SplashCoordinator(minimumDisplayDuration: 0, skipsMinimumDuration: true)
        var bootstrapCount = 0

        await coordinator.start {
            bootstrapCount += 1
        }
        await coordinator.start {
            bootstrapCount += 1
        }

        XCTAssertTrue(coordinator.isFinished)
        XCTAssertEqual(bootstrapCount, 1)
    }
}