diff --git a/VAR.WebFormsCore.Tests/Code/ExtensionMethodsTests.cs b/VAR.WebFormsCore.Tests/Code/ExtensionMethodsTests.cs
new file mode 100644
index 0000000..ff80344
--- /dev/null
+++ b/VAR.WebFormsCore.Tests/Code/ExtensionMethodsTests.cs
@@ -0,0 +1,104 @@
+using System.Text;
+using Xunit;
+using VAR.WebFormsCore.Code;
+using VAR.WebFormsCore.Tests.Fakes;
+
+namespace VAR.WebFormsCore.Tests.Code;
+
+public class ExtensionMethodsTests
+{
+    #region GetRequestParameter
+    
+    [Fact]
+    public void GetRequestParameter__EmptyGet__Empty()
+    {
+        FakeWebContext fakeWebContext = new();
+        string key = "Key";
+
+        string result = fakeWebContext.GetRequestParameter(key);
+        
+        Assert.Equal(string.Empty, result);
+    }
+    
+    [Fact]
+    public void GetRequestParameter__EmptyPost__Empty()
+    {
+        FakeWebContext fakeWebContext = new(requestMethod: "POST");
+        string key = "Key";
+
+        string result = fakeWebContext.GetRequestParameter(key);
+        
+        Assert.Equal(string.Empty, result);
+    }
+    
+    [Fact]
+    public void GetRequestParameter__QueryKeyGet__CorrectValue()
+    {
+        FakeWebContext fakeWebContext = new();
+        string key = "Key";
+        string value = "Value";
+        fakeWebContext.RequestQuery.Add(key, value);
+
+        string result = fakeWebContext.GetRequestParameter(key);
+        
+        Assert.Equal(value, result);
+    }
+    
+    [Fact]
+    public void GetRequestParameter__FormKeyPost__CorrectValue()
+    {
+        FakeWebContext fakeWebContext = new(requestMethod: "POST");
+        string key = "Key";
+        string value = "Value";
+        fakeWebContext.RequestForm.Add(key, value);
+        
+        string result = fakeWebContext.GetRequestParameter(key);
+        
+        Assert.Equal(value, result);
+    }
+
+    [Fact]
+    public void GetRequestParameter__OtherQueryKeyGet__CorrectValue()
+    {
+        FakeWebContext fakeWebContext = new();
+        string keyInvalid = "KeyInvalid";
+        string key = "Key";
+        string value = "Value";
+        fakeWebContext.RequestQuery.Add(keyInvalid, value);
+
+        string result = fakeWebContext.GetRequestParameter(key);
+        
+        Assert.Equal(string.Empty, result);
+    }
+    
+    [Fact]
+    public void GetRequestParameter__OtherFormKeyPost__Empty()
+    {
+        FakeWebContext fakeWebContext = new(requestMethod: "POST");
+        string keyInvalid = "KeyInvalid";
+        string key = "Key";
+        string value = "Value";
+        fakeWebContext.RequestForm.Add(keyInvalid, value);
+        
+        string result = fakeWebContext.GetRequestParameter(key);
+        
+        Assert.Equal(string.Empty, result);
+    }
+
+    #endregion GetRequestParameter
+    
+    #region ResponseObject
+
+    [Fact]
+    public void ResponseObject__EmptyObject__NullString()
+    {
+        FakeWebContext fakeWebContext = new();
+
+        fakeWebContext.ResponseObject(new object());
+
+        Assert.Single(fakeWebContext.FakeWritePackages);
+        Assert.Equal("{ }", Encoding.UTF8.GetString(fakeWebContext.FakeWritePackages[0].Bin ?? Array.Empty<byte>()));
+    }
+    
+    #endregion ResponseObject
+}
\ No newline at end of file
diff --git a/VAR.WebFormsCore.Tests/Fakes/FakeWebContext.cs b/VAR.WebFormsCore.Tests/Fakes/FakeWebContext.cs
index 019da5d..a49c361 100644
--- a/VAR.WebFormsCore.Tests/Fakes/FakeWebContext.cs
+++ b/VAR.WebFormsCore.Tests/Fakes/FakeWebContext.cs
@@ -4,10 +4,15 @@ namespace VAR.WebFormsCore.Tests.Fakes;
 
 public class FakeWebContext : IWebContext
 {
+    public FakeWebContext(string requestMethod = "GET")
+    {
+        RequestMethod = requestMethod;
+    }
+    
     public string RequestPath => string.Empty;
-    
-    public string RequestMethod => string.Empty;
-    
+
+    public string RequestMethod { get; }
+
     public Dictionary<string, string?> RequestHeader { get; } = new();
     
     public Dictionary<string, string> RequestCookies { get; } = new();