diff --git a/VAR.WebFormsCore.Tests/Code/ServerHelperTests.cs b/VAR.WebFormsCore.Tests/Code/ServerHelperTests.cs
new file mode 100644
index 0000000..70ead2b
--- /dev/null
+++ b/VAR.WebFormsCore.Tests/Code/ServerHelperTests.cs
@@ -0,0 +1,104 @@
+using Xunit;
+using VAR.WebFormsCore.Code;
+
+namespace VAR.WebFormsCore.Tests.Code;
+
+public class ServerHelperTests
+{
+    #region MapContentPath
+    
+    [Fact]
+    public void MapContentPath__Empty__Slash()
+    {
+        ServerHelpers.SetContentRoot(string.Empty);
+        string result = ServerHelpers.MapContentPath(string.Empty);
+        
+        Assert.Equal("/", result);
+    }
+    
+    [Fact]
+    public void MapContentPath__File__SlashFile()
+    {
+        ServerHelpers.SetContentRoot(string.Empty);
+        string result = ServerHelpers.MapContentPath("file.ext");
+        
+        Assert.Equal("/file.ext", result);
+    }
+    
+    [Fact]
+    public void MapContentPath__FileWithRoot__AbsolutePathToFile()
+    {
+        ServerHelpers.SetContentRoot("/opt/App");
+        string result = ServerHelpers.MapContentPath("file.ext");
+        
+        Assert.Equal("/opt/App/file.ext", result);
+    }
+    
+    #endregion MapContentPath
+    
+    #region HtmlEncode
+    
+    [Fact]
+    public void HtmlEncode__Empty__Empty()
+    {
+        string result = ServerHelpers.HtmlEncode(string.Empty);
+        
+        Assert.Equal(string.Empty, result);
+    }
+    
+    [Fact]
+    public void HtmlEncode__SafeString__SameString()
+    {
+        string text = "aA0,     ()!?=\\-_*+";
+        
+        string result = ServerHelpers.HtmlEncode(text);
+        
+        Assert.Equal(text, result);
+    }
+    
+    [Fact]
+    public void HtmlEncode__UnsafeString__SafeString()
+    {
+        string text = "<<>>\"'&\u00FF";
+        string safeText = "&lt;&lt;&gt;&gt;&quot;&#39;&amp;&#255;";
+        
+        string result = ServerHelpers.HtmlEncode(text);
+        
+        Assert.Equal(safeText, result);
+    }
+
+    #endregion HtmlEncode
+    
+    #region UrlEncode
+    
+    [Fact]
+    public void UrlEncode__Empty__Empty()
+    {
+        string result = ServerHelpers.UrlEncode(string.Empty);
+        
+        Assert.Equal(string.Empty, result);
+    }
+    
+    [Fact]
+    public void UrlEncode__SafeString__SameString()
+    {
+        string text = "aA0()!-_*";
+        
+        string result = ServerHelpers.UrlEncode(text);
+        
+        Assert.Equal(text, result);
+    }
+    
+    [Fact]
+    public void UrlEncode__UnsafeString__SafeString()
+    {
+        string text = "<< >>\"' + &\u00FF";
+        string safeText = "%3C%3C+%3E%3E%22%27+%2B+%26%FF";
+        
+        string result = ServerHelpers.UrlEncode(text);
+        
+        Assert.Equal(safeText, result);
+    }
+
+    #endregion UrlEncode
+}
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