add(test)：添加单元测试

backend/IMTest/bin/Debug/net8.0/IMTest.runtimeconfig.json

@@ -0,0 +1,19 @@
+{
+  "runtimeOptions": {
+    "tfm": "net8.0",
+    "frameworks": [
+      {
+        "name": "Microsoft.NETCore.App",
+        "version": "8.0.0"
+      },
+      {
+        "name": "Microsoft.AspNetCore.App",
+        "version": "8.0.0"
+      }
+    ],
+    "configProperties": {
+      "System.Reflection.NullabilityInfoContext.IsSupported": true,
+      "System.Runtime.Serialization.EnableUnsafeBinaryFormatterSerialization": false
+    }
+  }
+}

backend/IMTest/bin/Debug/net8.0/IM_API.runtimeconfig.json

@@ -0,0 +1,20 @@
+{
+  "runtimeOptions": {
+    "tfm": "net8.0",
+    "frameworks": [
+      {
+        "name": "Microsoft.NETCore.App",
+        "version": "8.0.0"
+      },
+      {
+        "name": "Microsoft.AspNetCore.App",
+        "version": "8.0.0"
+      }
+    ],
+    "configProperties": {
+      "System.GC.Server": true,
+      "System.Reflection.NullabilityInfoContext.IsSupported": true,
+      "System.Runtime.Serialization.EnableUnsafeBinaryFormatterSerialization": false
+    }
+  }
+}

backend/IMTest/bin/Debug/net8.0/IM_API.staticwebassets.endpoints.json

@@ -0,0 +1 @@
+{"Version":1,"ManifestType":"Build","Endpoints":[]}

backend/IMTest/bin/Debug/net8.0/appsettings.Development.json

@@ -0,0 +1,8 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  }
+}

backend/IMTest/bin/Debug/net8.0/appsettings.json

@@ -0,0 +1,20 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  },
+  "AllowedHosts": "*",
+  "Jwt": {
+    "Key": "YourSuperSecretKey123456784124214190!",
+    "Issuer": "IMDemo",
+    "Audience": "IMClients",
+    "AccessTokenMinutes": 15,
+    "RefreshTokenDays": 30
+  },
+  "ConnectionStrings": {
+    "DefaultConnection": "Server=frp-era.com;Port=26582;Database=IM;User=product;Password=12345678;",
+    "Redis": "192.168.5.100:6379"
+  }
+}