From 3aa732d1ced11e351d634f3b99b110fc288b028a Mon Sep 17 00:00:00 2001
From: Argo Zhang <argo@live.ca>
Date: Thu, 20 Nov 2025 17:31:21 +0800
Subject: [PATCH] =?UTF-8?q?test:=20=E5=A2=9E=E5=8A=A0=E5=8D=95=E5=85=83?=
 =?UTF-8?q?=E6=B5=8B=E8=AF=95?=
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---
 binding/csharp/IP2Region.Net.Test/XdbTest.cs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/binding/csharp/IP2Region.Net.Test/XdbTest.cs b/binding/csharp/IP2Region.Net.Test/XdbTest.cs
index ff376a1..e7bec8d 100644
--- a/binding/csharp/IP2Region.Net.Test/XdbTest.cs
+++ b/binding/csharp/IP2Region.Net.Test/XdbTest.cs
@@ -32,4 +32,11 @@ public class XdbTest
         Assert.Equal(6, version.IPVer);
         Assert.Equal(4, version.BytesCount);
     }
+
+    [Fact]
+    public async Task GetVersionAsync_Error()
+    {
+        await Assert.ThrowsAsync<ArgumentNullException>(async () => await XDB.Util.GetVersionAsync(null));
+        await Assert.ThrowsAsync<FileNotFoundException>(async () => await XDB.Util.GetVersionAsync(Path.Combine(AppContext.BaseDirectory, "test.xdb")));
+    }
 }