A:初版

test/NetClient.Test/Tests/NetClientResultsTests.cs

@@ -0,0 +1,60 @@
+using System;
+using System.Net;
+using System.Net.Http;
+using System.Threading.Tasks;
+using Common.Results;
+using Microsoft.Extensions.Logging.Abstractions;
+using NetClient.Abstractions;
+using NetClient.Implementations;
+using NetClient.Test.TestDoubles;
+
+namespace NetClient.Test.Tests;
+
+[TestClass]
+public class NetClientResultsTests
+{
+    private static DefaultNetClient CreateClient(HttpMessageHandler handler)
+    {
+        var http = new HttpClient(handler) { BaseAddress = new Uri("https://example.com") };
+        IHttpContentSerializer serializer = new TestJsonSerializer();
+        var logger = NullLogger<DefaultNetClient>.Instance;
+        return new DefaultNetClient(http, serializer, logger);
+    }
+
+    [TestMethod]
+    public async Task GetResultAsync_Success_Returns_Result_With_Value()
+    {
+        var json = "{\"id\":1}";
+        var handler = new TestHttpMessageHandler(_ => Task.FromResult(TestHttpMessageHandler.Json(HttpStatusCode.OK, json)));
+        var client = CreateClient(handler);
+
+        var res = await client.GetResultAsync<Obj>("/obj");
+        Assert.IsTrue(res.IsSuccess);
+        Assert.AreEqual(1, res.Value!.id);
+    }
+
+    [TestMethod]
+    public async Task GetResultAsync_Failure_Maps_StatusCode_And_Message()
+    {
+        var handler = new TestHttpMessageHandler(_ => Task.FromResult(TestHttpMessageHandler.Text(HttpStatusCode.BadRequest, "bad req")));
+        var client = CreateClient(handler);
+
+        var res = await client.GetResultAsync<Obj>("/obj");
+        Assert.IsTrue(res.IsFailure);
+        Assert.AreEqual((long)HttpStatusCode.BadRequest, res.ErrorCode);
+        StringAssert.Contains(res.ErrorMessage ?? string.Empty, "bad req");
+    }
+
+    [TestMethod]
+    public async Task DeleteResultAsync_Success_Returns_Success_Result()
+    {
+        var handler = new TestHttpMessageHandler(_ => Task.FromResult(TestHttpMessageHandler.Text(HttpStatusCode.NoContent, "")));
+        var client = CreateClient(handler);
+
+        var res = await client.DeleteResultAsync("/obj/1");
+        Assert.IsTrue(res.IsSuccess);
+    }
+
+    private sealed record Obj(int id);
+}
+