test(tenpayv2): 补充发起退款接口的单元测试用例

test/SKIT.FlurlHttpClient.Wechat.TenpayV2.UnitTests/.gitignore

@@ -0,0 +1 @@
+appsettings.local.json

test/SKIT.FlurlHttpClient.Wechat.TenpayV2.UnitTests/TestCase_ApiExecuteExecutePayTests.cs

@@ -7,7 +7,7 @@ namespace SKIT.FlurlHttpClient.Wechat.TenpayV2.UnitTests
     public class TestCase_ApiExecuteExecutePayTransactionsTests
     {
         [Fact(DisplayName = "测试用例：调用 API [POST] /pay/micropay")]
-        public async Task TestCase_ApiExecuteExecutePayTests()
+        public async Task TestCase_ApiExecuteExecuteCreatePayMicroPayTests()
         {
             var request = new Models.CreatePayMicroPayRequest()
             {
@@ -23,5 +23,23 @@ namespace SKIT.FlurlHttpClient.Wechat.TenpayV2.UnitTests
             Assert.NotNull(response.ReturnMessage);
             Assert.NotNull(response.TransactionId);
         }
+
+        [Fact(DisplayName = "测试用例：调用 API [POST] /secapi/pay/refund")]
+        public async Task TestCase_ApiExecuteCreatePayRefundTests()
+        {
+            var request = new Models.CreatePayRefundRequest()
+            {
+                OutTradeNumber = "TSET_OUTTRADENO",
+                OutRefundNumber = "TEST_OTN_" + DateTimeOffset.Now.ToString("yyyyMMddHHmmssfff"),
+                TotalFee = 1,
+                RefundFee = 1,
+                Description = "TEST_DESC"
+            };
+            var response = await TestClients.Instance.ExecuteCreatePayRefundAsync(request);
+
+            Assert.NotNull(response.ReturnCode);
+            Assert.NotNull(response.ReturnMessage);
+            Assert.NotNull(response.RefundId);
+        }
     }
 }

test/SKIT.FlurlHttpClient.Wechat.TenpayV2.UnitTests/TestClients.cs

@@ -8,6 +8,7 @@
             { 
                 MerchantId = TestConfigs.WechatMerchantId,
                 MerchantSecret = TestConfigs.WechatMerchantSecret,
+                MerchantCertificateBytes = TestConfigs.WechatMerchantCertificateBytes,
                 AppId = TestConfigs.WechatAppId
             });
         }

test/SKIT.FlurlHttpClient.Wechat.TenpayV2.UnitTests/TestConfigs.cs

@@ -21,6 +21,7 @@ namespace SKIT.FlurlHttpClient.Wechat.TenpayV2.UnitTests
                 WechatAppId = config.GetProperty("AppId").GetString()!;
                 WechatMerchantId = config.GetProperty("MerchantId").GetString()!;
                 WechatMerchantSecret = config.GetProperty("MerchantSecret").GetString()!;
+                WechatMerchantCertificateBytes = config.GetProperty("MerchantCertificateBase64String").GetBytesFromBase64();
                 WechatOpenId = config.GetProperty("OpenId").GetString()!;
 
                 ProjectSourceDirectory = jdoc.RootElement.GetProperty("ProjectSourceDirectory").GetString()!;
@@ -35,6 +36,7 @@ namespace SKIT.FlurlHttpClient.Wechat.TenpayV2.UnitTests
         public static readonly string WechatAppId;
         public static readonly string WechatMerchantId;
         public static readonly string WechatMerchantSecret;
+        public static readonly byte[] WechatMerchantCertificateBytes;
         public static readonly string WechatOpenId;
 
         public static readonly string ProjectSourceDirectory;

test/SKIT.FlurlHttpClient.Wechat.TenpayV2.UnitTests/appsettings.json

@@ -3,6 +3,7 @@
         "AppId": "请在此填写用于测试的微信 AppId",
         "MerchantId": "请在此填写用于测试的微信商户号",
         "MerchantSecret": "请在此填写用于测试的微信商户 API 密钥",
+        "MerchantCertificateBase64String": "请在此填写用于测试的微信商户证书内容的 Base64 字节数组",
         "OpenId": "请在此填写用于测试的微信用户唯一标识"
     },
     "ProjectSourceDirectory": "请输入当前 SDK 项目所在的目录完整路径，如 C:\\Project\\src\\SKIT.FlurlHttpClient.Wechat.TenpayV2\\",