Implement JsonPath query support for JsonNode

README.md

@@ -45,4 +45,8 @@ Because JsonDocumentPath is using the same Json.net strategic for parsing and ev
 - [x] JPathParseTests
 - [x] QueryExpressionTests
 - [x] JPathExecuteTests
+- [x] JsonNodeParseTests
+- [x] JsonNodePathExecuteTests
+- [x] JsonNodeQueryExpressionTests
+- [x] JsonNodeRefTests
 

src/JsonDocumentPath.Test/JPathExecuteTests.cs

@@ -19,6 +19,7 @@ public void GreaterThanIssue1518()
             Assert.Equal(jObj, aa);
 
             var bb = jObj.SelectElement("$..[?(@.usingmem>27000)]");//null, 27,000
+
             Assert.Equal(jObj, bb);
 
             var cc = jObj.SelectElement("$..[?(@.usingmem>21437)]");//found, 21,437
@@ -1201,13 +1202,12 @@ public void QueryAgainstNonStringValues()
             /*
                Dotnet 6.0 JsonDocument Parse the TimeSpan as string '365.23:59:59'
              */
-#if NET6_0
-            
+#if NET6_0_OR_GREATER
+
             Assert.Equal(2, t.Count);
 #else
             Assert.Equal(1, t.Count);
 #endif
-
         }
 
         [Fact]
@@ -1431,6 +1431,7 @@ public void RootInFilterWithRootObject()
         }
 
         public const string IsoDateFormat = "yyyy-MM-ddTHH:mm:ss.FFFFFFFK";
+
         [Fact]
         public void RootInFilterWithInitializers()
         {

src/JsonDocumentPath.Test/JsonDocumentExtensions.cs

@@ -1,4 +1,5 @@
 using System.Text.Json;
+using System.Text.Json.Nodes;
 
 namespace JDocument.Test
 {
@@ -25,4 +26,18 @@ public static bool DeepEquals(this JsonDocument left, JsonDocument? right)
             return DeepEquals(left.RootElement, right?.RootElement);
         }
     }
-}
+
+    public static class JsonNodeExtensions
+    {
+        public static bool DeepEquals(this JsonNode left, JsonNode? right)
+        {
+            if (right == null)
+            {
+                return false;
+            }
+            var jsonString = left.ToJsonString();
+            var jsonStringR = right.ToJsonString();
+            return jsonString == jsonStringR;
+        }
+    }
+}

src/JsonDocumentPath.Test/JsonDocumentPath.Test.csproj

@@ -1,9 +1,10 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFrameworks>net6.0;</TargetFrameworks>
 
     <IsPackable>false</IsPackable>
+    <LangVersion>latest</LangVersion>
   </PropertyGroup>
 
   <ItemGroup>