diff --git a/.gitignore b/.gitignore
index 0a5d442..4d2998b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -56,3 +56,7 @@ src/CncWebApi/*.xml
 
 # === 测试报告 ===
 docs/test-reports/
+
+# === Playwright 测试产物 ===
+test-results/
+playwright-report/
diff --git a/src/CncCollector/Core/CollectWorker.cs b/src/CncCollector/Core/CollectWorker.cs
index 8ddba03..03ddff5 100644
--- a/src/CncCollector/Core/CollectWorker.cs
+++ b/src/CncCollector/Core/CollectWorker.cs
@@ -38,6 +38,9 @@ namespace CncCollector.Core
         /// <summary>采集地址名称</summary>
         public string AddressName => _address.Name;
 
+        /// <summary>采集地址URL</summary>
+        public string AddressUrl => _address.Url;
+
         /// <summary>是否运行中</summary>
         public bool IsRunning => _running;
 
diff --git a/src/CncCollector/Core/CollectorEngine.cs b/src/CncCollector/Core/CollectorEngine.cs
index 3072041..3cfb5cb 100644
--- a/src/CncCollector/Core/CollectorEngine.cs
+++ b/src/CncCollector/Core/CollectorEngine.cs
@@ -148,6 +148,7 @@ namespace CncCollector.Core
                 {
                     ["addressId"] = kvp.Key,
                     ["name"] = kvp.Value.AddressName,
+                    ["url"] = kvp.Value.AddressUrl,
                     ["isRunning"] = kvp.Value.IsRunning
                 });
             }
diff --git a/src/CncCollector/scripts/package-lock.json b/src/CncCollector/scripts/package-lock.json
new file mode 100644
index 0000000..283a3d8
--- /dev/null
+++ b/src/CncCollector/scripts/package-lock.json
@@ -0,0 +1,75 @@
+{
+  "name": "scripts",
+  "version": "1.0.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "scripts",
+      "version": "1.0.0",
+      "license": "ISC",
+      "dependencies": {
+        "@playwright/test": "^1.59.1"
+      }
+    },
+    "node_modules/@playwright/test": {
+      "version": "1.59.1",
+      "resolved": "https://registry.npmjs.org/@playwright/test/-/test-1.59.1.tgz",
+      "integrity": "sha512-PG6q63nQg5c9rIi4/Z5lR5IVF7yU5MqmKaPOe0HSc0O2cX1fPi96sUQu5j7eo4gKCkB2AnNGoWt7y4/Xx3Kcqg==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "playwright": "1.59.1"
+      },
+      "bin": {
+        "playwright": "cli.js"
+      },
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/fsevents": {
+      "version": "2.3.2",
+      "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-2.3.2.tgz",
+      "integrity": "sha512-xiqMQR4xAeHTuB9uWm+fFRcIOgKBMiOBP+eXiyT7jsgVCq1bkVygt00oASowB7EdtpOHaaPgKt812P9ab+DDKA==",
+      "hasInstallScript": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "darwin"
+      ],
+      "engines": {
+        "node": "^8.16.0 || ^10.6.0 || >=11.0.0"
+      }
+    },
+    "node_modules/playwright": {
+      "version": "1.59.1",
+      "resolved": "https://registry.npmjs.org/playwright/-/playwright-1.59.1.tgz",
+      "integrity": "sha512-C8oWjPR3F81yljW9o5OxcWzfh6avkVwDD2VYdwIGqTkl+OGFISgypqzfu7dOe4QNLL2aqcWBmI3PMtLIK233lw==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "playwright-core": "1.59.1"
+      },
+      "bin": {
+        "playwright": "cli.js"
+      },
+      "engines": {
+        "node": ">=18"
+      },
+      "optionalDependencies": {
+        "fsevents": "2.3.2"
+      }
+    },
+    "node_modules/playwright-core": {
+      "version": "1.59.1",
+      "resolved": "https://registry.npmjs.org/playwright-core/-/playwright-core-1.59.1.tgz",
+      "integrity": "sha512-HBV/RJg81z5BiiZ9yPzIiClYV/QMsDCKUyogwH9p3MCP6IYjUFu/MActgYAvK0oWyV9NlwM3GLBjADyWgydVyg==",
+      "license": "Apache-2.0",
+      "bin": {
+        "playwright-core": "cli.js"
+      },
+      "engines": {
+        "node": ">=18"
+      }
+    }
+  }
+}
diff --git a/src/CncCollector/scripts/package.json b/src/CncCollector/scripts/package.json
new file mode 100644
index 0000000..e2684b3
--- /dev/null
+++ b/src/CncCollector/scripts/package.json
@@ -0,0 +1,16 @@
+{
+  "name": "scripts",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "type": "commonjs",
+  "dependencies": {
+    "@playwright/test": "^1.59.1"
+  }
+}
diff --git a/src/CncCollector/scripts/playwright.config.ts b/src/CncCollector/scripts/playwright.config.ts
new file mode 100644
index 0000000..45a2256
--- /dev/null
+++ b/src/CncCollector/scripts/playwright.config.ts
@@ -0,0 +1,18 @@
+import { defineConfig } from '@playwright/test';
+
+/**
+ * Playwright 配置 - CncCollector 采集服务端到端测试
+ * 
+ * 仅测试 HTTP API，不需要浏览器
+ */
+export default defineConfig({
+  testDir: '.',
+  testMatch: 'e2e-collector.spec.ts',
+  timeout: 30000,
+  retries: 0,
+  reporter: [['list'], ['html', { open: 'never' }]],
+  use: {
+    // 不在全局设置extraHTTPHeaders，每个测试自行控制认证
+    // （否则"无API Key"测试也会带上Key）
+  },
+});
diff --git a/src/CncSimulator/Admin/AdminHandler.cs b/src/CncSimulator/Admin/AdminHandler.cs
index 00f3782..a11e789 100644
--- a/src/CncSimulator/Admin/AdminHandler.cs
+++ b/src/CncSimulator/Admin/AdminHandler.cs
@@ -41,6 +41,23 @@ namespace CncSimulator.Admin
             sb.AppendLine(".btn-sm-primary { padding:4px 12px; border:1px solid #1890ff; border-radius:4px; background:#1890ff; color:#fff; font-size:13px; }");
             sb.AppendLine(".btn-sm-danger { padding:4px 12px; border:1px solid #ff4d4f; border-radius:4px; background:#fff; color:#ff4d4f; font-size:13px; }");
             sb.AppendLine(".interval-input { width:60px; padding:2px 6px; border:1px solid #d9d9d9; border-radius:4px; text-align:center; }");
+            sb.AppendLine(".modal-overlay { display:none; position:fixed; top:0; left:0; width:100%; height:100%; background:rgba(0,0,0,0.4); z-index:1000; justify-content:center; align-items:center; }");
+            sb.AppendLine(".modal-overlay.show { display:flex; }");
+            sb.AppendLine(".modal { background:#fff; border-radius:8px; padding:24px; width:520px; max-height:80vh; overflow-y:auto; box-shadow:0 4px 20px rgba(0,0,0,0.2); }");
+            sb.AppendLine(".modal h3 { font-size:16px; margin-bottom:12px; padding-bottom:8px; border-bottom:1px solid #e8e8e8; }");
+            sb.AppendLine(".machine-list { max-height:350px; overflow-y:auto; margin-bottom:16px; }");
+            sb.AppendLine(".machine-item { display:flex; align-items:center; padding:8px 4px; border-bottom:1px solid #f5f5f5; }");
+            sb.AppendLine(".machine-item:hover { background:#fafafa; }");
+            sb.AppendLine(".machine-item input[type=checkbox] { margin-right:10px; width:16px; height:16px; cursor:pointer; }");
+            sb.AppendLine(".machine-item .code { font-weight:600; min-width:100px; font-size:14px; }");
+            sb.AppendLine(".machine-item .name { color:#666; font-size:13px; }");
+            sb.AppendLine(".modal-actions { display:flex; justify-content:space-between; align-items:center; }");
+            sb.AppendLine(".modal-actions .sel-actions { font-size:13px; color:#666; }");
+            sb.AppendLine(".modal-actions .sel-actions a { color:#1890ff; cursor:pointer; text-decoration:none; margin-right:12px; }");
+            sb.AppendLine(".modal-actions .btn-group { display:flex; gap:8px; }");
+            sb.AppendLine(".btn-confirm { padding:6px 20px; border:1px solid #1890ff; border-radius:4px; background:#1890ff; color:#fff; font-size:14px; cursor:pointer; }");
+            sb.AppendLine(".btn-confirm:hover { background:#40a9ff; }");
+            sb.AppendLine(".btn-cancel { padding:6px 20px; border:1px solid #d9d9d9; border-radius:4px; background:#fff; color:#333; font-size:14px; cursor:pointer; }");
             sb.AppendLine("</style></head><body>");
             sb.AppendLine("<div class='header'>");
             sb.AppendLine("  <h1>CNC 模拟采集服务</h1>");
@@ -60,9 +77,27 @@ namespace CncSimulator.Admin
             sb.AppendLine("    <tbody id='runningTable'></tbody></table>");
             sb.AppendLine("  </div>");
             sb.AppendLine("</div>");
+            // 机床选择弹窗
+            sb.AppendLine("<div class='modal-overlay' id='machineModal'>");
+            sb.AppendLine("  <div class='modal'>");
+            sb.AppendLine("    <h3 id='modalTitle'>选择要模拟的机床</h3>");
+            sb.AppendLine("    <div class='machine-list' id='machineList'></div>");
+            sb.AppendLine("    <div class='modal-actions'>");
+            sb.AppendLine("      <div class='sel-actions'>");
+            sb.AppendLine("        <a onclick=\"toggleAll(true)\">全选</a><a onclick=\"toggleAll(false)\">取消全选</a>");
+            sb.AppendLine("        <span id='selCount'>已选 0 台</span>");
+            sb.AppendLine("      </div>");
+            sb.AppendLine("      <div class='btn-group'>");
+            sb.AppendLine("        <button class='btn-cancel' onclick='closeModal()'>取消</button>");
+            sb.AppendLine("        <button class='btn-confirm' id='btnConfirmStart' onclick='confirmStart()'>启动模拟</button>");
+            sb.AppendLine("      </div>");
+            sb.AppendLine("    </div>");
+            sb.AppendLine("  </div>");
+            sb.AppendLine("</div>");
             sb.AppendLine("<script>");
             sb.AppendLine("function refresh(){");
             sb.AppendLine("  fetch('/admin/api/db-addresses').then(r=>r.json()).then(addrs=>{");
+            sb.AppendLine("    window._addrCache=addrs;");
             sb.AppendLine("    var tb=document.getElementById('addrTable');tb.innerHTML='';");
             sb.AppendLine("    addrs.forEach(function(a){");
             sb.AppendLine("      var st=a.isRunning?'<span class=\"status-dot status-running\"></span>运行中':'<span class=\"status-dot status-stopped\"></span>未启动';");
@@ -88,7 +123,32 @@ namespace CncSimulator.Admin
             sb.AppendLine("    data.forEach(function(s){ var el=document.getElementById('parts_'+s.dbAddressId); if(el) el.textContent=s.totalParts||0; });");
             sb.AppendLine("  }).catch(function(){});");
             sb.AppendLine("}");
-            sb.AppendLine("function startAddr(dbId){var intEl=document.getElementById('int_'+dbId);var interval=intEl?parseInt(intEl.value):10;fetch('/admin/api/start-address',{method:'POST',headers:{'Content-Type':'application/json'},body:JSON.stringify({dbAddressId:dbId,interval:interval})}).then(r=>r.json()).then(function(){refresh();});}");
+            sb.AppendLine("function startAddr(dbId){");
+            sb.AppendLine("  // 从db-addresses缓存中找到该地址的机床列表，打开弹窗");
+            sb.AppendLine("  window._pendingAddrId=dbId;");
+            sb.AppendLine("  var intEl=document.getElementById('int_'+dbId);");
+            sb.AppendLine("  window._pendingInterval=intEl?parseInt(intEl.value):10;");
+            sb.AppendLine("  var addr=window._addrCache.find(function(a){return a.dbId===dbId;});");
+            sb.AppendLine("  if(!addr||!addr.machines||addr.machines.length===0){alert('该地址下没有机床');return;}");
+            sb.AppendLine("  document.getElementById('modalTitle').textContent='选择要模拟的机床 - '+addr.name;");
+            sb.AppendLine("  var list=document.getElementById('machineList');list.innerHTML='';");
+            sb.AppendLine("  addr.machines.forEach(function(m){");
+            sb.AppendLine("    list.innerHTML+='<div class=\"machine-item\"><input type=\"checkbox\" checked data-code=\"'+(m.DeviceCode||m.deviceCode)+'\" data-name=\"'+(m.Name||m.name)+'\"><span class=\"code\">'+(m.DeviceCode||m.deviceCode)+'</span><span class=\"name\">'+(m.Name||m.name)+'</span></div>';");
+            sb.AppendLine("  });");
+            sb.AppendLine("  updateSelCount();");
+            sb.AppendLine("  document.getElementById('machineModal').classList.add('show');");
+            sb.AppendLine("}");
+            sb.AppendLine("function closeModal(){document.getElementById('machineModal').classList.remove('show');}");
+            sb.AppendLine("function toggleAll(checked){var cbs=document.querySelectorAll('#machineList input[type=checkbox]');cbs.forEach(function(cb){cb.checked=checked;});updateSelCount();}");
+            sb.AppendLine("function updateSelCount(){var cbs=document.querySelectorAll('#machineList input[type=checkbox]:checked');document.getElementById('selCount').textContent='已选 '+cbs.length+' 台';}");
+            sb.AppendLine("document.getElementById('machineList').addEventListener('change',function(e){if(e.target.type==='checkbox')updateSelCount();});");
+            sb.AppendLine("function confirmStart(){");
+            sb.AppendLine("  var cbs=document.querySelectorAll('#machineList input[type=checkbox]:checked');");
+            sb.AppendLine("  if(cbs.length===0){alert('请至少选择一台机床');return;}");
+            sb.AppendLine("  var codes=[];cbs.forEach(function(cb){codes.push(cb.getAttribute('data-code'));});");
+            sb.AppendLine("  closeModal();");
+            sb.AppendLine("  fetch('/admin/api/start-address',{method:'POST',headers:{'Content-Type':'application/json'},body:JSON.stringify({dbAddressId:window._pendingAddrId,interval:window._pendingInterval,deviceCodes:codes})}).then(r=>r.json()).then(function(){refresh();});");
+            sb.AppendLine("}");
             sb.AppendLine("function stopAddr(dbId){fetch('/admin/api/stop-address',{method:'POST',headers:{'Content-Type':'application/json'},body:JSON.stringify({dbAddressId:dbId})}).then(function(){refresh();});}");
             sb.AppendLine("function startAll(){fetch('/admin/api/start-all',{method:'POST'}).then(function(){refresh();});}");
             sb.AppendLine("function stopAll(){fetch('/admin/api/stop-all',{method:'POST'}).then(function(){refresh();});}");
diff --git a/src/CncSimulator/Core/SimulatorEngine.cs b/src/CncSimulator/Core/SimulatorEngine.cs
index ca5c68e..11b3194 100644
--- a/src/CncSimulator/Core/SimulatorEngine.cs
+++ b/src/CncSimulator/Core/SimulatorEngine.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using System.Net;
 using System.Text;
 using CncSimulator.Admin;
@@ -58,7 +59,8 @@ namespace CncSimulator.Core
         }
 
         /// <summary>为指定采集地址创建并启动模拟端口</summary>
-        public SimulatorServer StartAddress(int dbAddressId, int? port = null, int? interval = null)
+        /// <param name="deviceCodes">要模拟的机床编码列表，为空则模拟全部</param>
+        public SimulatorServer StartAddress(int dbAddressId, int? port = null, int? interval = null, List<string> deviceCodes = null)
         {
             // 查找数据库中的地址信息
             AddressInfo addrInfo = null;
@@ -90,8 +92,26 @@ namespace CncSimulator.Core
                 ScenarioMode = "auto"
             };
 
-            // 为每台机床创建设备配置
-            foreach (var m in addrInfo.Machines)
+            // 筛选要模拟的机床（如果指定了deviceCodes则只模拟选中的，否则模拟全部）
+            var machines = addrInfo.Machines;
+            if (deviceCodes != null && deviceCodes.Count > 0)
+            {
+                machines = new List<MachineInfo>();
+                foreach (var m in addrInfo.Machines)
+                {
+                    foreach (var code in deviceCodes)
+                    {
+                        if (string.Equals(m.DeviceCode, code, StringComparison.OrdinalIgnoreCase))
+                        {
+                            machines.Add(m);
+                            break;
+                        }
+                    }
+                }
+            }
+
+            // 为筛选后的机床创建设备配置
+            foreach (var m in machines)
             {
                 addrConfig.Devices.Add(new DeviceConfig
                 {
@@ -107,7 +127,7 @@ namespace CncSimulator.Core
             server.Start(); // 启动HttpListener + Timer（数据模拟）
             _servers.Add(server);
 
-            Console.WriteLine($"  [✓] 启动模拟: {addrConfig.Name} → http://localhost:{usePort}/ ({addrInfo.Machines.Count}台设备)");
+            Console.WriteLine($"  [✓] 启动模拟: {addrConfig.Name} → http://localhost:{usePort}/ ({machines.Count}/{addrInfo.Machines.Count}台设备)");
             return server;
         }
 
@@ -236,7 +256,12 @@ namespace CncSimulator.Core
                             ["name"] = a.Name,
                             ["url"] = a.Url,
                             ["machineCount"] = a.Machines.Count,
-                            ["machines"] = JArray.FromObject(a.Machines),
+                            ["machines"] = JArray.FromObject(a.Machines.Select(m => new JObject
+                            {
+                                ["id"] = m.Id,
+                                ["deviceCode"] = m.DeviceCode,
+                                ["name"] = m.Name
+                            }).ToList()),
                             ["isRunning"] = running,
                             ["runningPort"] = runningPort
                         });
@@ -255,7 +280,15 @@ namespace CncSimulator.Core
                     int dbId = obj["dbAddressId"]?.Value<int>() ?? 0;
                     int? port = obj["port"]?.Value<int>();
                     int? interval = obj["interval"]?.Value<int>();
-                    var server = StartAddress(dbId, port, interval);
+                    // 解析deviceCodes数组
+                    List<string> deviceCodes = null;
+                    var codesArr = obj["deviceCodes"] as JArray;
+                    if (codesArr != null && codesArr.Count > 0)
+                    {
+                        deviceCodes = new List<string>();
+                        foreach (var c in codesArr) deviceCodes.Add(c.ToString());
+                    }
+                    var server = StartAddress(dbId, port, interval, deviceCodes);
                     SendResponse(ctx, 200, server != null ? "{\"ok\":true,\"port\":" + server.Port + "}" : "{\"ok\":false}", "application/json");
                 }
                 else if (path == "/admin/api/stop-address")
diff --git a/tests/CncCollector.Tests/CncCollector.Tests.csproj b/tests/CncCollector.Tests/CncCollector.Tests.csproj
index 4fc1c08..6c3401b 100644
--- a/tests/CncCollector.Tests/CncCollector.Tests.csproj
+++ b/tests/CncCollector.Tests/CncCollector.Tests.csproj
@@ -17,6 +17,10 @@
     <PackageReference Include="Moq" Version="4.20.72" />
   </ItemGroup>
 
+  <ItemGroup>
+    <Reference Include="System.Net.Http" />
+  </ItemGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\..\src\CncModels\CncModels.csproj" />
     <ProjectReference Include="..\..\src\CncCollector\CncCollector.csproj" />
diff --git a/tests/CncCollector.Tests/CollectRecordWriterTests.cs b/tests/CncCollector.Tests/CollectRecordWriterTests.cs
new file mode 100644
index 0000000..6b79bd1
--- /dev/null
+++ b/tests/CncCollector.Tests/CollectRecordWriterTests.cs
@@ -0,0 +1,136 @@
+using System;
+using System.Collections.Generic;
+using Xunit;
+using CncCollector.Core;
+using CncModels.Entity;
+
+namespace CncCollector.Tests
+{
+    /// <summary>
+    /// CollectRecordWriter 单元测试。
+    /// CollectRecordWriter 使用静态方法 + MySqlConnection，
+    /// 使用无效连接字符串验证容错行为（不抛异常）。
+    /// </summary>
+    public class CollectRecordWriterTests
+    {
+        /// <summary>无效连接字符串</summary>
+        private const string InvalidConnStr = "Server=invalid;Database=invalid;User Id=invalid;Password=invalid;";
+
+        // ===== WriteBatch 测试 =====
+
+        [Fact]
+        public void WriteBatch_无效连接字符串_不抛异常()
+        {
+            // WriteBatch 内部所有DB操作都有 try-catch，不应向外抛异常
+            var ex = Record.Exception(() => CollectRecordWriter.WriteBatch(
+                InvalidConnStr, InvalidConnStr,
+                null, "", 1, DateTime.Now, 100L, false, "测试错误"));
+            Assert.Null(ex);
+        }
+
+        [Fact]
+        public void WriteBatch_成功状态但记录为空_不抛异常()
+        {
+            var ex = Record.Exception(() => CollectRecordWriter.WriteBatch(
+                InvalidConnStr, InvalidConnStr,
+                new List<CollectRecord>(), "{}", 1, DateTime.Now, 50L, true, null));
+            Assert.Null(ex);
+        }
+
+        [Fact]
+        public void WriteBatch_成功状态有记录_不抛异常()
+        {
+            var records = new List<CollectRecord>
+            {
+                new CollectRecord
+                {
+                    MachineId = 1,
+                    CollectTime = DateTime.Now,
+                    ProgramName = "O0001",
+                    PartCount = 10
+                }
+            };
+            var ex = Record.Exception(() => CollectRecordWriter.WriteBatch(
+                InvalidConnStr, InvalidConnStr,
+                records, "{}", 1, DateTime.Now, 200L, true, null));
+            Assert.Null(ex);
+        }
+
+        [Fact]
+        public void WriteBatch_失败状态_不抛异常()
+        {
+            var ex = Record.Exception(() => CollectRecordWriter.WriteBatch(
+                InvalidConnStr, InvalidConnStr,
+                null, "原始JSON", 1, DateTime.Now, null, false, "连接超时"));
+            Assert.Null(ex);
+        }
+
+        [Fact]
+        public void WriteBatch_null连接字符串_不抛异常()
+        {
+            // null连接字符串会在 MySqlConnection 构造时失败，但应被 try-catch 捕获
+            var ex = Record.Exception(() => CollectRecordWriter.WriteBatch(
+                null, null,
+                null, "", 1, DateTime.Now, null, false, "错误"));
+            Assert.Null(ex);
+        }
+
+        [Fact]
+        public void WriteBatch_null原始JSON_不抛异常()
+        {
+            var ex = Record.Exception(() => CollectRecordWriter.WriteBatch(
+                InvalidConnStr, InvalidConnStr,
+                null, null, 1, DateTime.Now, 100L, false, null));
+            Assert.Null(ex);
+        }
+
+        [Fact]
+        public void WriteBatch_多条记录_不抛异常()
+        {
+            var records = new List<CollectRecord>
+            {
+                new CollectRecord { MachineId = 1, CollectTime = DateTime.Now, ProgramName = "O0001", PartCount = 5 },
+                new CollectRecord { MachineId = 2, CollectTime = DateTime.Now, ProgramName = "O0002", PartCount = 10 },
+                new CollectRecord { MachineId = 3, CollectTime = DateTime.Now, ProgramName = "O0003", PartCount = 15 }
+            };
+            var ex = Record.Exception(() => CollectRecordWriter.WriteBatch(
+                InvalidConnStr, InvalidConnStr,
+                records, "[]", 1, DateTime.Now, 300L, true, null));
+            Assert.Null(ex);
+        }
+
+        // ===== RecordFailure 测试 =====
+
+        [Fact]
+        public void RecordFailure_无效连接字符串_不抛异常()
+        {
+            var ex = Record.Exception(() => CollectRecordWriter.RecordFailure(
+                InvalidConnStr, 1, "连接超时"));
+            Assert.Null(ex);
+        }
+
+        [Fact]
+        public void RecordFailure_null连接字符串_不抛异常()
+        {
+            var ex = Record.Exception(() => CollectRecordWriter.RecordFailure(
+                null, 1, "错误"));
+            Assert.Null(ex);
+        }
+
+        [Fact]
+        public void RecordFailure_null错误信息_不抛异常()
+        {
+            var ex = Record.Exception(() => CollectRecordWriter.RecordFailure(
+                InvalidConnStr, 1, null));
+            Assert.Null(ex);
+        }
+
+        [Fact]
+        public void RecordFailure_无效地址ID_不抛异常()
+        {
+            var ex = Record.Exception(() => CollectRecordWriter.RecordFailure(
+                InvalidConnStr, -1, "地址无效"));
+            Assert.Null(ex);
+        }
+    }
+}
diff --git a/tests/CncCollector.Tests/CollectorApiServerTests.cs b/tests/CncCollector.Tests/CollectorApiServerTests.cs
new file mode 100644
index 0000000..a40494d
--- /dev/null
+++ b/tests/CncCollector.Tests/CollectorApiServerTests.cs
@@ -0,0 +1,179 @@
+using System;
+using System.Collections.Generic;
+using System.Net;
+using System.Net.Http;
+using System.Threading.Tasks;
+using Newtonsoft.Json;
+using Xunit;
+using CncCollector.Core;
+using CncCollector.Api;
+using CncCollector.Config;
+
+namespace CncCollector.Tests
+{
+    /// <summary>
+    /// CollectorApiServer 单元测试。
+    /// 使用无效DB配置创建引擎和API服务器，通过HTTP客户端验证认证和路由行为。
+    /// </summary>
+    public class CollectorApiServerTests : IDisposable
+    {
+        private readonly CollectorEngine _engine;
+        private readonly CollectorApiServer _server;
+        private readonly HttpClient _client;
+        private readonly int _port;
+        private readonly string _apiKey = "test_api_key_123";
+
+        public CollectorApiServerTests()
+        {
+            // 使用随机端口避免冲突
+            _port = 15800 + new Random().Next(0, 1000);
+            var config = new CollectorConfig
+            {
+                BusinessConnection = "Server=invalid;Database=invalid;User Id=invalid;Password=invalid;",
+                LogConnection = "Server=invalid;Database=invalid;User Id=invalid;Password=invalid;",
+                ApiPort = _port
+            };
+            _engine = new CollectorEngine(config);
+            _server = new CollectorApiServer(_engine, _apiKey, _port);
+            _server.Start();
+
+            _client = new HttpClient { Timeout = TimeSpan.FromSeconds(5) };
+        }
+
+        public void Dispose()
+        {
+            _server?.Stop();
+            _client?.Dispose();
+        }
+
+        // ===== 认证测试 =====
+
+        [Fact]
+        public async Task Status_无APIKey_返回401()
+        {
+            var resp = await _client.GetAsync($"http://localhost:{_port}/api/collector/status");
+            Assert.Equal(HttpStatusCode.Unauthorized, resp.StatusCode);
+        }
+
+        [Fact]
+        public async Task Status_错误APIKey_返回401()
+        {
+            var request = new HttpRequestMessage(HttpMethod.Get, $"http://localhost:{_port}/api/collector/status");
+            request.Headers.Add("X-Api-Key", "wrong_key");
+            var resp = await _client.SendAsync(request);
+            Assert.Equal(HttpStatusCode.Unauthorized, resp.StatusCode);
+        }
+
+        [Fact]
+        public async Task Status_正确APIKey_返回200()
+        {
+            var request = new HttpRequestMessage(HttpMethod.Get, $"http://localhost:{_port}/api/collector/status");
+            request.Headers.Add("X-Api-Key", _apiKey);
+            var resp = await _client.SendAsync(request);
+            Assert.Equal(HttpStatusCode.OK, resp.StatusCode);
+        }
+
+        // ===== 响应格式测试 =====
+
+        [Fact]
+        public async Task Status_响应体为标准JSON格式()
+        {
+            var request = new HttpRequestMessage(HttpMethod.Get, $"http://localhost:{_port}/api/collector/status");
+            request.Headers.Add("X-Api-Key", _apiKey);
+            var resp = await _client.SendAsync(request);
+            var body = await resp.Content.ReadAsStringAsync();
+            var json = JsonConvert.DeserializeObject<Dictionary<string, object>>(body);
+
+            Assert.NotNull(json);
+            Assert.True(json.ContainsKey("code"));
+            Assert.True(json.ContainsKey("message"));
+            Assert.True(json.ContainsKey("data"));
+        }
+
+        [Fact]
+        public async Task Status_响应data包含预期字段()
+        {
+            var request = new HttpRequestMessage(HttpMethod.Get, $"http://localhost:{_port}/api/collector/status");
+            request.Headers.Add("X-Api-Key", _apiKey);
+            var resp = await _client.SendAsync(request);
+            var body = await resp.Content.ReadAsStringAsync();
+            dynamic json = JsonConvert.DeserializeObject(body);
+
+            Assert.Equal(0, (int)json.code);
+            Assert.NotNull(json.data);
+            Assert.NotNull(json.data.isRunning);
+            Assert.NotNull(json.data.workerCount);
+            Assert.NotNull(json.data.workers);
+        }
+
+        // ===== 路由测试 =====
+
+        [Fact]
+        public async Task UnknownEndpoint_返回404()
+        {
+            var request = new HttpRequestMessage(HttpMethod.Get, $"http://localhost:{_port}/api/collector/nonexistent");
+            request.Headers.Add("X-Api-Key", _apiKey);
+            var resp = await _client.SendAsync(request);
+            Assert.Equal(HttpStatusCode.NotFound, resp.StatusCode);
+        }
+
+        [Fact]
+        public async Task Refresh_正确APIKey_返回200()
+        {
+            var request = new HttpRequestMessage(HttpMethod.Post, $"http://localhost:{_port}/api/collector/refresh");
+            request.Headers.Add("X-Api-Key", _apiKey);
+            var resp = await _client.SendAsync(request);
+            Assert.Equal(HttpStatusCode.OK, resp.StatusCode);
+        }
+
+        [Fact]
+        public async Task Stop_正确APIKey_返回200()
+        {
+            var request = new HttpRequestMessage(HttpMethod.Post, $"http://localhost:{_port}/api/collector/stop");
+            request.Headers.Add("X-Api-Key", _apiKey);
+            var resp = await _client.SendAsync(request);
+            Assert.Equal(HttpStatusCode.OK, resp.StatusCode);
+        }
+
+        [Fact]
+        public async Task Start_正确APIKey_返回200()
+        {
+            var request = new HttpRequestMessage(HttpMethod.Post, $"http://localhost:{_port}/api/collector/start");
+            request.Headers.Add("X-Api-Key", _apiKey);
+            var resp = await _client.SendAsync(request);
+            Assert.Equal(HttpStatusCode.OK, resp.StatusCode);
+        }
+
+        // ===== 启停控制测试 =====
+
+        [Fact]
+        public async Task 启停顺序_状态正确切换()
+        {
+            // 停止
+            var stopReq = new HttpRequestMessage(HttpMethod.Post, $"http://localhost:{_port}/api/collector/stop");
+            stopReq.Headers.Add("X-Api-Key", _apiKey);
+            await _client.SendAsync(stopReq);
+
+            // 检查状态为停止
+            var statusReq = new HttpRequestMessage(HttpMethod.Get, $"http://localhost:{_port}/api/collector/status");
+            statusReq.Headers.Add("X-Api-Key", _apiKey);
+            var statusResp = await _client.SendAsync(statusReq);
+            var body = await statusResp.Content.ReadAsStringAsync();
+            dynamic json = JsonConvert.DeserializeObject(body);
+            Assert.False((bool)json.data.isRunning);
+
+            // 启动
+            var startReq = new HttpRequestMessage(HttpMethod.Post, $"http://localhost:{_port}/api/collector/start");
+            startReq.Headers.Add("X-Api-Key", _apiKey);
+            await _client.SendAsync(startReq);
+
+            // 检查状态为运行
+            statusReq = new HttpRequestMessage(HttpMethod.Get, $"http://localhost:{_port}/api/collector/status");
+            statusReq.Headers.Add("X-Api-Key", _apiKey);
+            statusResp = await _client.SendAsync(statusReq);
+            body = await statusResp.Content.ReadAsStringAsync();
+            json = JsonConvert.DeserializeObject(body);
+            Assert.True((bool)json.data.isRunning);
+        }
+    }
+}