Allows serialization of null valued properties.

.azure-pipelines/generation-templates/authentication-module.yml

@@ -30,6 +30,15 @@ steps:
           script: |
             . $(System.DefaultWorkingDirectory)/tools/GenerateAuthenticationModule.ps1 -Test
 
+  - ${{ if eq(parameters.Test, true) }}:
+      - task: PowerShell@2
+        displayName: Test Json Utilities
+        inputs:
+          pwsh: true
+          targetType: inline
+          script: dotnet test
+          workingDirectory: "$(System.DefaultWorkingDirectory)/tools/Tests/JsonUtilitiesTest"
+
   - ${{ if eq(parameters.Sign, true) }}:
       - template: ../common-templates/esrp/strongname.yml
         parameters:

src/readme.graph.md

@@ -335,6 +335,11 @@ directive:
         let dateTimeToJsonRegex = /(\.Json\.JsonString\()(.*)\?(\.ToString\(@"yyyy'-'MM'-'dd'T'HH':'mm':'ss\.fffffffK")/gm
         $ = $.replace(dateTimeToJsonRegex, '$1System.DateTime.SpecifyKind($2.Value.ToUniversalTime(), System.DateTimeKind.Utc)$3');
 
+        // Enables null valued properties
+        $ = $.replace(/AddIf\(\s*null\s*!=\s*(this\._\w+)\s*\?\s*\(\s*Microsoft\.Graph\.PowerShell\.Runtime\.Json\.JsonNode\)\s*(.*)\s*:\s*null\s*,\s*"(.*?)"\s*,\s*container\.Add\s*\)/gm, 'container.Add("$3", $1 != null ? (Microsoft.Graph.PowerShell.Runtime.Json.JsonNode) $2 :"defaultnull")')
+
+        $ = $.replace(/AddIf\(\s*null\s*!=\s*\(\(\(\(object\)\s*(this\._\w+)\)\)?.ToString\(\)\)\s*\?\s*\(\s*Microsoft\.Graph\.PowerShell\.Runtime\.Json\.JsonNode\)\s*new\s*Microsoft\.Graph\.PowerShell\.Runtime\.Json\.JsonString\((this\._\w+).ToString\(\)\)\s*:\s*null\s*,\s*"(.*?)"\s*,\s*container\.Add\s*\)/gm, 'container.Add("$3", $1 != null ? (Microsoft.Graph.PowerShell.Runtime.Json.JsonNode) new Microsoft.Graph.PowerShell.Runtime.Json.JsonString($2.ToString()) :"defaultnull")');
+
         return $;
       }
 # Modify generated .dictionary.cs model classes.

tools/Custom/JsonExtensions.cs

@@ -0,0 +1,62 @@
+namespace Microsoft.Graph.PowerShell.JsonUtilities
+{
+    using Newtonsoft.Json.Linq;
+    using System.Linq;
+
+    public static class JsonExtensions
+    {
+        /// <summary>
+        /// Removes JSON properties that have a value of "defaultnull" and converts properties with values of "null" to actual JSON null values.
+        /// </summary>
+        /// <param name="jsonObject">The JObject to process and clean.</param>
+        /// <returns>
+        /// A JSON string representation of the cleaned JObject with "defaultnull" properties removed and "null" values converted to JSON null.
+        /// </returns>
+        /// <example>
+        /// JObject json = JObject.Parse(@"{""name"": ""John"", ""email"": ""defaultnull"", ""address"": ""null""}");
+        /// string cleanedJson = json.RemoveDefaultNullProperties();
+        /// Console.WriteLine(cleanedJson);
+        /// // Output: { "name": "John", "address": null }
+        /// </example>
+        public static string RemoveDefaultNullProperties(this JObject jsonObject)
+        {
+            try
+            {
+                foreach (var property in jsonObject.Properties().ToList())
+                {
+                    if (property.Value.Type == JTokenType.Object)
+                    {
+                        RemoveDefaultNullProperties((JObject)property.Value);
+                    }
+                    else if (property.Value.Type == JTokenType.Array)
+                    {
+                        foreach (var item in property.Value)
+                        {
+                            if (item.Type == JTokenType.Object)
+                            {
+                                RemoveDefaultNullProperties((JObject)item);
+                            }
+                        }
+                    }
+                    else if (property.Value.Type == JTokenType.String && property.Value.ToString() == "defaultnull")
+                    {
+                        property.Remove();
+                    }
+                    else if (property.Value.Type == JTokenType.String && (property.Value.ToString() == "null"))
+                    {
+                        property.Value = JValue.CreateNull();
+                    }
+                }
+            }
+            catch (System.Exception)
+            {
+                return jsonObject.ToString(); // Return the original string if parsing fails
+            }
+            return jsonObject.ToString();
+        }
+        public static string ReplaceAndRemoveSlashes(this string body)
+        {
+            return body.Replace("/", "").Replace("\\", "").Replace("rn", "").Replace("\"{", "{").Replace("}\"", "}");
+        }
+    }
+}

tools/Tests/JsonUtilitiesTest/JsonExtensionsTests.cs

@@ -0,0 +1,128 @@
+namespace JsonUtilitiesTest;
+using System;
+using Newtonsoft.Json.Linq;
+using Xunit;
+using Microsoft.Graph.PowerShell.JsonUtilities;
+
+public class JsonExtensionsTests
+{
+    [Fact]
+    public void RemoveDefaultNullProperties_ShouldRemoveDefaultNullValues()
+    {
+        // Arrange
+        JObject json = JObject.Parse(@"{
+            ""displayname"": ""Tim"",
+            ""position"": ""defaultnull"",
+            ""salary"": 2000000,
+            ""team"": ""defaultnull""
+        }");
+
+        // Act
+        string cleanedJson = json.RemoveDefaultNullProperties();
+        JObject result = JObject.Parse(cleanedJson);
+
+        // Assert
+        Assert.False(result.ContainsKey("position"));
+        Assert.False(result.ContainsKey("team"));
+        Assert.Equal("Tim", result["displayname"]?.ToString());
+        Assert.Equal(2000000, result["salary"]?.ToObject<int>());
+    }
+
+    [Fact]
+    public void RemoveDefaultNullProperties_ShouldConvertStringNullToJsonNull()
+    {
+        // Arrange
+        JObject json = JObject.Parse(@"{
+            ""displayname"": ""Tim"",
+            ""position"": ""null"",
+            ""salary"": 2000000,
+            ""team"": """"
+        }");
+
+        // Act
+        string cleanedJson = json.RemoveDefaultNullProperties();
+        JObject result = JObject.Parse(cleanedJson);
+
+        // Assert
+        Assert.Null(result["position"]?.Value<string>());
+        Assert.Equal("",result["team"]?.ToString());
+        Assert.Equal("Tim", result["displayname"]?.ToString());
+        Assert.Equal(2000000, result["salary"]?.ToObject<int>());
+    }
+
+    [Fact]
+    public void RemoveDefaultNullProperties_ShouldHandleNestedObjects()
+    {
+        // Arrange
+        JObject json = JObject.Parse(@"{
+            ""displayname"": ""Tim"",
+            ""metadata"": {
+                ""phone"": ""defaultnull"",
+                ""location"": ""Nairobi""
+            }
+        }");
+
+        // Act
+        string cleanedJson = json.RemoveDefaultNullProperties();
+        JObject result = JObject.Parse(cleanedJson);
+
+        // Assert
+        Assert.False(result["metadata"]?.ToObject<JObject>()?.ContainsKey("phone"));
+        Assert.Equal("Nairobi", result["metadata"]?["location"]?.ToString());
+    }
+
+    [Fact]
+    public void RemoveDefaultNullProperties_ShouldHandleEmptyJsonObject()
+    {
+        // Arrange
+        JObject json = JObject.Parse(@"{}");
+
+        // Act
+        string cleanedJson = json.RemoveDefaultNullProperties();
+        JObject result = JObject.Parse(cleanedJson);
+
+        // Assert
+        Assert.Empty(result);
+    }
+
+    [Fact]
+    public void RemoveDefaultNullProperties_ShouldHandleJsonArrays()
+    {
+        // Arrange
+        JObject json = JObject.Parse(@"{
+            ""users"": [
+                { ""displayname"": ""Tim"", ""email"": ""defaultnull"" },
+                { ""displayname"": ""Mayabi"", ""email"": ""mayabi@example.com"" }
+            ]
+        }");
+
+        // Act
+        string cleanedJson = json.RemoveDefaultNullProperties();
+        JObject result = JObject.Parse(cleanedJson);
+
+        // Assert
+        Assert.Equal("Tim", result["users"]?[0]?["displayname"]?.ToString());
+        Assert.Equal("mayabi@example.com", result["users"]?[1]?["email"]?.ToString());
+    }
+
+    [Fact]
+    public void RemoveDefaultNullProperties_ShouldNotAlterValidData()
+    {
+        // Arrange
+        JObject json = JObject.Parse(@"{
+            ""displayname"": ""Tim"",
+            ""email"": ""mayabi@example.com"",
+            ""salary"": 2000000
+        }");
+
+        // Act
+        string cleanedJson = json.RemoveDefaultNullProperties();
+        JObject result = JObject.Parse(cleanedJson);
+
+        // Assert
+        Assert.Equal("Tim", result["displayname"]?.ToString());
+        Assert.Equal("mayabi@example.com", result["email"]?.ToString());
+        Assert.Equal(2000000, result["salary"]?.ToObject<int>());
+    }
+}
+

tools/Tests/JsonUtilitiesTest/JsonUtilitiesTest.csproj

@@ -0,0 +1,27 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="coverlet.collector" Version="6.0.2" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
+    <PackageReference Include="xunit" Version="2.9.2" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Using Include="Xunit" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Compile Include="../../Custom/JsonExtensions.cs">
+        <Link>../../Custom/JsonExtensions.cs</Link>
+    </Compile>
+  </ItemGroup>
+
+</Project>