chore: initial project import
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using System.Net.Http.Headers;
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using System.Text;
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using System.Text.Json.Nodes;
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using Microsoft.AspNetCore.Builder;
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using Microsoft.AspNetCore.Hosting.Server;
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using Microsoft.AspNetCore.Hosting.Server.Features;
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using Microsoft.Extensions.DependencyInjection;
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using Monitor.Backend.Application;
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using Monitor.TestSupport;
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namespace Monitor.Backend.Tests;
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/// <summary>
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/// 在真实的 Kestrel 端口上启动整个后端（真实的 SQLite 与段文件，只是用临时目录和较快的轮询），
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/// 并提供管理员客户端（Bearer 令牌）和假 Agent。
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/// </summary>
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public class BackendFixture : IAsyncLifetime
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{
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public const string AdminUser = "admin";
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public const string AdminPassword = "correct horse battery";
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private readonly List<AgentSimulator> _agents = [];
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private string _adminToken = "";
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private int _counter;
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/// <summary>所有测试都从同一个回环地址登录，所以共享的后端放宽限流；专门测试限流的类用 <see cref="StrictLoginFixture"/>。</summary>
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protected virtual int LoginAttemptsPerMinute => 1000;
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public WebApplication App { get; private set; } = null!;
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public Uri BaseAddress { get; private set; } = null!;
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public string DataDirectory { get; private set; } = "";
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public HttpClient Anonymous { get; private set; } = null!;
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/// <summary>带 admin 作用域的 API 令牌的客户端。</summary>
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public HttpClient Admin { get; private set; } = null!;
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public IServiceProvider Services => App.Services;
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/// <summary>夹具创建的默认 Probe：合成块（<see cref="ChunkFactory"/>）和单线路的查询都用它。</summary>
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public string DefaultProbeId { get; private set; } = "";
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/// <summary>默认 Probe 与这个 Agent 组成的线路 id（<c>agent~probe</c>）。</summary>
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public string Line(Fleet.Core.NodeId agent) => $"{agent.Value}~{DefaultProbeId}";
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public string Line(string agentId) => $"{agentId}~{DefaultProbeId}";
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/// <summary>在后端创建一个新的 Probe 身份，返回响应里的 JSON（含私钥，只此一次）。</summary>
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public async Task<JsonNode> CreateProbeAsync(string? name = null)
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{
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using HttpResponseMessage response = await Admin.PostAsync("/api/admin/probes", Json(new JsonObject { ["name"] = name ?? UniqueName("probe") }));
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string body = await response.Content.ReadAsStringAsync();
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Assert.True(response.IsSuccessStatusCode, body);
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return JsonNode.Parse(body)!;
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}
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public async ValueTask InitializeAsync()
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{
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DataDirectory = Path.Combine(Path.GetTempPath(), "monitor-tests-" + Guid.NewGuid().ToString("N"));
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await StartAsync();
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_adminToken = await CreateAdminTokenAsync();
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CreateClients();
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DefaultProbeId = (await CreateProbeAsync("default"))["probe_id"]!.GetValue<string>();
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}
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public async ValueTask DisposeAsync()
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{
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GC.SuppressFinalize(this);
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foreach (AgentSimulator agent in _agents)
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{
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await agent.DisposeAsync();
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}
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Anonymous.Dispose();
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Admin.Dispose();
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await StopAsync();
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try
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{
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Directory.Delete(DataDirectory, recursive: true);
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}
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catch (IOException)
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{
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// 临时目录清理失败不影响测试结果
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}
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}
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/// <summary>重启后端（保留数据目录）：用来验证数据是否真的落盘。</summary>
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public async Task RestartAsync()
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{
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Anonymous.Dispose();
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Admin.Dispose();
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await StopAsync();
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await StartAsync();
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CreateClients(); // 新的端口：HttpClient 的 BaseAddress 只能在第一次请求之前设置
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}
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/// <summary>用同一个身份重新连接一个已经断开的假 Agent。</summary>
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public async Task<AgentSimulator> ReconnectAsync(AgentSimulator previous)
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{
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AgentSimulator agent = AgentSimulator.Restore(previous.ExportedKey, previous.NodeId);
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agent.ProbeForChunks = new Monitor.Protocol.ProbeId(DefaultProbeId);
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_agents.Add(agent);
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await agent.ConnectAsync(BaseAddress);
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return agent;
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}
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private void CreateClients()
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{
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Anonymous = NewClient();
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Admin = NewClient();
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Admin.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", _adminToken);
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}
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public HttpClient NewClient() => new() { BaseAddress = BaseAddress };
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public string UniqueName(string prefix) => $"{prefix}-{Interlocked.Increment(ref _counter)}";
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public async Task<string> CreateJoinTokenAsync(bool autoApprove = true, int maxUses = 1, int expiresInHours = 1)
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{
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using HttpResponseMessage response = await Admin.PostAsync("/api/admin/join-tokens", Json(new JsonObject { ["auto_approve"] = autoApprove, ["max_uses"] = maxUses, ["expires_in_hours"] = expiresInHours }));
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response.EnsureSuccessStatusCode();
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return JsonNode.Parse(await response.Content.ReadAsStringAsync())!["plaintext"]!.GetValue<string>();
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}
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/// <summary>注册并连接一个假 Agent。</summary>
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public async Task<AgentSimulator> ConnectAgentAsync(string? name = null, bool autoApprove = true, string[]? kinds = null, bool hello = true)
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{
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string token = await CreateJoinTokenAsync(autoApprove);
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AgentSimulator agent = await AgentSimulator.EnrollAsync(Anonymous, token, name ?? UniqueName("agent"), kinds);
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agent.ProbeForChunks = new Monitor.Protocol.ProbeId(DefaultProbeId);
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_agents.Add(agent);
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await agent.ConnectAsync(BaseAddress, hello, kinds);
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return agent;
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}
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public async Task<AgentSimulator> EnrollOnlyAsync(string? name = null, bool autoApprove = true)
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{
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string token = await CreateJoinTokenAsync(autoApprove);
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AgentSimulator agent = await AgentSimulator.EnrollAsync(Anonymous, token, name ?? UniqueName("agent"));
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_agents.Add(agent);
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return agent;
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}
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public async Task<JsonNode> GetJsonAsync(HttpClient client, string url)
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{
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using HttpResponseMessage response = await client.GetAsync(url);
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string text = await response.Content.ReadAsStringAsync();
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Assert.True(response.IsSuccessStatusCode, $"GET {url} -> {(int)response.StatusCode} {text}");
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return JsonNode.Parse(text)!;
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}
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public static StringContent Json(JsonNode node, string mediaType = "application/json") =>
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new(node.ToJsonString(), Encoding.UTF8, mediaType);
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public async Task SiteMustBePublicAsync()
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{
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using HttpResponseMessage response = await Admin.PatchAsync("/api/admin/settings", Json(new JsonObject { ["site.public"] = true }, "application/merge-patch+json"));
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response.EnsureSuccessStatusCode();
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}
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/// <summary>轮询直到条件成立（后台分析、状态推送都是异步的）。</summary>
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public static async Task EventuallyAsync(Func<Task<bool>> condition, TimeSpan? timeout = null, string? because = null)
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{
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long started = TimeProvider.System.GetTimestamp();
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TimeSpan limit = timeout ?? TimeSpan.FromSeconds(15);
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while (TimeProvider.System.GetElapsedTime(started) < limit)
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{
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if (await condition())
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{
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return;
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}
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await Task.Delay(50);
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}
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Assert.Fail("condition was not met in time" + (because is null ? "" : ": " + because));
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}
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private async Task StartAsync()
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{
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App = BackendHost.Build(
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["--urls", "http://127.0.0.1:0", "--Logging:LogLevel:Default=Warning"],
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options =>
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{
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options.DataDirectory = DataDirectory;
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options.Pbkdf2Iterations = 1000;
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options.SecureCookies = false;
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options.WindowGrace = TimeSpan.Zero;
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options.AnalysisPollInterval = TimeSpan.FromMilliseconds(100);
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options.InitialAdminUser = AdminUser;
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options.InitialAdminPassword = AdminPassword;
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options.LoginAttemptsPerMinute = LoginAttemptsPerMinute;
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});
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await App.StartAsync();
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string address = App.Services.GetRequiredService<IServer>().Features.Get<IServerAddressesFeature>()!.Addresses.First();
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BaseAddress = new Uri(address);
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}
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private async Task StopAsync()
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{
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await App.StopAsync();
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await App.DisposeAsync();
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}
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private async Task<string> CreateAdminTokenAsync()
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{
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using HttpClient session = NewClient();
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using HttpResponseMessage login = await session.PostAsync(
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"/api/admin/auth/login", Json(new JsonObject { ["username"] = AdminUser, ["password"] = AdminPassword }));
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login.EnsureSuccessStatusCode();
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JsonNode body = JsonNode.Parse(await login.Content.ReadAsStringAsync())!;
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string cookie = login.Headers.GetValues("Set-Cookie").First().Split(';')[0];
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using var request = new HttpRequestMessage(HttpMethod.Post, "/api/admin/api-tokens") { Content = Json(new JsonObject { ["name"] = "tests", ["scope"] = "admin" }) };
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request.Headers.Add("Cookie", cookie);
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request.Headers.Add("X-CSRF-Token", body["csrf_token"]!.GetValue<string>());
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using HttpResponseMessage created = await session.SendAsync(request);
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created.EnsureSuccessStatusCode();
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return JsonNode.Parse(await created.Content.ReadAsStringAsync())!["plaintext"]!.GetValue<string>();
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}
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}
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/// <summary>登录限流为每分钟 10 次（默认值）的独立后端。</summary>
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public sealed class StrictLoginFixture : BackendFixture
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{
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protected override int LoginAttemptsPerMinute => 10;
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}
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