test: 增加单元测试

Author: ArgoZhang

test/UnitTest/Components/DialogTest.cs

@@ -573,6 +573,11 @@ await cut.InvokeAsync(() => dialog.ShowCloseDialog<MockValidateFormDialog>("Clos
         }));
         await cut.InvokeAsync(() => modal.Instance.CloseCallback());
         #endregion
+
+        #region Show Extensions Method
+        await cut.InvokeAsync(() => dialog.Show<MockValidateFormDialog>("Test Title"));
+        await cut.InvokeAsync(() => modal.Instance.CloseCallback());
+        #endregion
     }
 
     private class MockValidateFormDialog : ComponentBase