test: 增加 IsImage 扩展方法单元测试

Author: ArgoZhang

src/BootstrapBlazor/Components/Upload/UploadFile.cs

@@ -81,7 +81,7 @@ public class UploadFile
     /// 获得 UploadFile 文件名
     /// </summary>
     /// <returns></returns>
-    public string? GetFileName() => FileName ?? OriginFileName;
+    public string? GetFileName() => FileName ?? OriginFileName ?? File?.Name;
 
     /// <summary>
     /// 获得 UploadFile 文件扩展名

test/UnitTest/Components/UploadCardTest.cs

@@ -151,13 +151,21 @@ public void AllowExtensions_Ok()
         var cut = Context.RenderComponent<CardUpload<string>>(pb =>
         {
             pb.Add(a => a.AllowExtensions, [".dba"]);
-            pb.Add(a => a.DefaultFileList, new List<UploadFile>()
-            {
+            pb.Add(a => a.DefaultFileList,
+            [
                 new() { FileName = "test.dba" }
-            });
+            ]);
         });
-
         cut.Contains("<span>test.dba</span> (0 B)");
+
+        cut.SetParametersAndRender(pb =>
+        {
+            pb.Add(a => a.DefaultFileList,
+            [
+                new() { File = new MockBrowserFile("demo.dba") }
+            ]);
+        });
+        cut.Contains("<span>demo.dba</span> (0 B)");
     }
 
     [Fact]