refactor: 更新 Reset 方法逻辑

Author: ArgoZhang

src/BootstrapBlazor/Components/Upload/UploadBase.cs

@@ -186,7 +186,7 @@ protected async Task OnFileChange(InputFileChangeEventArgs args)
         }
         else if (ValueType.IsAssignableTo(typeof(IEnumerable<string>)))
         {
-            CurrentValue = (TValue)(object)string.Join(";", items.Select(f => f.OriginFileName)).ToList();
+            CurrentValue = (TValue)(object)items.Select(f => f.OriginFileName).ToList();
         }
         else if (ValueType == typeof(IBrowserFile))
         {
@@ -310,6 +310,8 @@ public virtual void Reset()
     {
         DefaultFileList?.Clear();
         UploadFiles.Clear();
+        _filesCache = null;
+        CurrentValue = default;
         StateHasChanged();
     }
 

test/UnitTest/Components/UploadInputTest.cs

@@ -145,7 +145,7 @@ public void InputUpload_FileValidate_OK()
     }
 
     [Fact]
-    public void InputUpload_Value()
+    public async Task InputUpload_Value()
     {
         var cut = Context.RenderComponent<InputUpload<List<string>>>(pb =>
         {
@@ -156,10 +156,18 @@ public void InputUpload_Value()
             ]);
         });
         Assert.Contains("test1.png;test2.png", cut.Markup);
+
+        var input = cut.FindComponent<InputFile>();
+        await cut.InvokeAsync(() => input.Instance.OnChange.InvokeAsync(new InputFileChangeEventArgs(new List<MockBrowserFile>()
+        {
+            new("test3.png"),
+            new("test4.png")
+        })));
+        Assert.Contains("test3.png;test4.png", cut.Markup);
     }
 
     [Fact]
-    public void InputUpload_Files()
+    public async Task InputUpload_Files()
     {
         var cut = Context.RenderComponent<InputUpload<List<IBrowserFile>>>(pb =>
         {
@@ -170,6 +178,18 @@ public void InputUpload_Files()
             ]);
         });
         Assert.Contains("test1.png;test2.png", cut.Markup);
+
+        var input = cut.FindComponent<InputFile>();
+        await cut.InvokeAsync(() => input.Instance.OnChange.InvokeAsync(new InputFileChangeEventArgs(new List<MockBrowserFile>()
+        {
+            new("test3.png"),
+            new("test4.png")
+        })));
+        Assert.Contains("test3.png;test4.png", cut.Markup);
+
+        // 重置后不应该包含新上传的文件
+        await cut.InvokeAsync(() => cut.Instance.Reset());
+        Assert.DoesNotContain("test3.png;test4.png", cut.Markup);
     }
 
     [Fact]