feat: add SerializeAsJsonAsync overloads accepting OpenApiJsonWriterS…

src/Microsoft.OpenApi/Extensions/OpenApiSerializableExtensions.cs

@@ -1,4 +1,4 @@
-// Copyright (c) Microsoft Corporation. All rights reserved.
+// Copyright (c) Microsoft Corporation. All rights reserved.
 // Licensed under the MIT license.
 
 using System.Globalization;
@@ -21,12 +21,29 @@ public static class OpenApiSerializableExtensions
         /// <param name="stream">The output stream.</param>
         /// <param name="specVersion">The Open API specification version.</param>
         /// <param name="cancellationToken">The cancellation token.</param>
+#pragma warning disable RS0027 // The settings overload below has the same parameter count but different types; no ambiguity exists.
         public static Task SerializeAsJsonAsync<T>(this T element, Stream stream, OpenApiSpecVersion specVersion, CancellationToken cancellationToken = default)
+#pragma warning restore RS0027
             where T : IOpenApiSerializable
         {
             return element.SerializeAsync(stream, specVersion, OpenApiConstants.Json, cancellationToken);
         }
 
+        /// <summary>
+        /// Serialize the <see cref="IOpenApiSerializable"/> to the Open API document (JSON) using the given stream, specification version and settings.
+        /// </summary>
+        /// <typeparam name="T">the <see cref="IOpenApiSerializable"/></typeparam>
+        /// <param name="element">The Open API element.</param>
+        /// <param name="stream">The output stream.</param>
+        /// <param name="specVersion">The Open API specification version.</param>
+        /// <param name="settings">Settings controlling JSON output, including <see cref="OpenApiJsonWriterSettings.Terse"/> for compact formatting.</param>
+        /// <param name="cancellationToken">The cancellation token.</param>
+        public static Task SerializeAsJsonAsync<T>(this T element, Stream stream, OpenApiSpecVersion specVersion, OpenApiJsonWriterSettings settings, CancellationToken cancellationToken)
+            where T : IOpenApiSerializable
+        {
+            return element.SerializeAsync(stream, specVersion, OpenApiConstants.Json, settings, cancellationToken);
+        }
+
         /// <summary>
         /// Serializes the <see cref="IOpenApiSerializable"/> to the Open API document (YAML) using the given stream and specification version.
         /// </summary>
@@ -104,7 +121,9 @@ public static Task SerializeAsync<T>(
         /// <param name="writer">The output writer.</param>
         /// <param name="specVersion">Version of the specification the output should conform to</param>
         /// <param name="cancellationToken">The cancellation token.</param>
+#pragma warning disable RS0027 // The settings-bearing SerializeAsync overloads below have the same parameter count but different types; no ambiguity exists.
         public static Task SerializeAsync<T>(this T element, IOpenApiWriter writer, OpenApiSpecVersion specVersion, CancellationToken cancellationToken = default)
+#pragma warning restore RS0027
             where T : IOpenApiSerializable
         {
             Utils.CheckArgumentNull(element);
@@ -142,15 +161,33 @@ public static Task SerializeAsync<T>(this T element, IOpenApiWriter writer, Open
         /// <param name="element">The Open API element.</param>
         /// <param name="specVersion">The Open API specification version.</param>
         /// <param name="cancellationToken">The cancellation token.</param>
+#pragma warning disable RS0027 // The settings overload below has the same parameter count but different types; no ambiguity exists.
         public static Task<string> SerializeAsJsonAsync<T>(
             this T element,
             OpenApiSpecVersion specVersion,
             CancellationToken cancellationToken = default)
+#pragma warning restore RS0027
             where T : IOpenApiSerializable
         {
             return element.SerializeAsync(specVersion, OpenApiConstants.Json, cancellationToken);
         }
 
+        /// <summary>
+        /// Serializes the <see cref="IOpenApiSerializable"/> to the Open API document as a string in JSON format using the given settings.
+        /// </summary>
+        /// <typeparam name="T">the <see cref="IOpenApiSerializable"/></typeparam>
+        /// <param name="element">The Open API element.</param>
+        /// <param name="specVersion">The Open API specification version.</param>
+        /// <param name="settings">Settings controlling JSON output, including <see cref="OpenApiJsonWriterSettings.Terse"/> for compact formatting.</param>
+        public static Task<string> SerializeAsJsonAsync<T>(
+            this T element,
+            OpenApiSpecVersion specVersion,
+            OpenApiJsonWriterSettings settings)
+            where T : IOpenApiSerializable
+        {
+            return element.SerializeAsync(specVersion, OpenApiConstants.Json, settings);
+        }
+
         /// <summary>
         /// Serializes the <see cref="IOpenApiSerializable"/> to the Open API document as a string in YAML format.
         /// </summary>
@@ -175,11 +212,13 @@ public static Task<string> SerializeAsYamlAsync<T>(
         /// <param name="specVersion">The Open API specification version.</param>
         /// <param name="format">Open API document format.</param>
         /// <param name="cancellationToken">The cancellation token.</param>
+#pragma warning disable RS0027 // The settings overload below has the same parameter count but different types; no ambiguity exists.
         public static async Task<string> SerializeAsync<T>(
             this T element,
             OpenApiSpecVersion specVersion,
             string format,
             CancellationToken cancellationToken = default)
+#pragma warning restore RS0027
             where T : IOpenApiSerializable
         {
             Utils.CheckArgumentNull(element);
@@ -195,5 +234,30 @@ public static async Task<string> SerializeAsync<T>(
             return await streamReader.ReadToEndAsync().ConfigureAwait(false);
 #endif
         }
+
+        /// <summary>
+        /// Serializes the <see cref="IOpenApiSerializable"/> to the Open API document as a string in the given format using the given settings.
+        /// </summary>
+        /// <typeparam name="T">the <see cref="IOpenApiSerializable"/></typeparam>
+        /// <param name="element">The Open API element.</param>
+        /// <param name="specVersion">The Open API specification version.</param>
+        /// <param name="format">Open API document format.</param>
+        /// <param name="settings">Provide configuration settings for controlling writing output.</param>
+        public static async Task<string> SerializeAsync<T>(
+            this T element,
+            OpenApiSpecVersion specVersion,
+            string format,
+            OpenApiWriterSettings? settings)
+            where T : IOpenApiSerializable
+        {
+            Utils.CheckArgumentNull(element);
+
+            using var stream = new MemoryStream();
+            await element.SerializeAsync(stream, specVersion, format, settings, CancellationToken.None).ConfigureAwait(false);
+            stream.Position = 0;
+
+            using var streamReader = new StreamReader(stream);
+            return await streamReader.ReadToEndAsync().ConfigureAwait(false);
+        }
     }
 }

src/Microsoft.OpenApi/PublicAPI.Unshipped.txt

@@ -1,3 +1,6 @@
 #nullable enable
 const Microsoft.OpenApi.OpenApiConstants.JsonSchemaExamplesExtension = "x-jsonschema-examples" -> string!
 const Microsoft.OpenApi.OpenApiConstants.OaiLicenseIdentifier = "x-oai-license-identifier" -> string!
+static Microsoft.OpenApi.OpenApiSerializableExtensions.SerializeAsJsonAsync<T>(this T element, Microsoft.OpenApi.OpenApiSpecVersion specVersion, Microsoft.OpenApi.OpenApiJsonWriterSettings! settings) -> System.Threading.Tasks.Task<string!>!
+static Microsoft.OpenApi.OpenApiSerializableExtensions.SerializeAsJsonAsync<T>(this T element, System.IO.Stream! stream, Microsoft.OpenApi.OpenApiSpecVersion specVersion, Microsoft.OpenApi.OpenApiJsonWriterSettings! settings, System.Threading.CancellationToken cancellationToken) -> System.Threading.Tasks.Task!
+static Microsoft.OpenApi.OpenApiSerializableExtensions.SerializeAsync<T>(this T element, Microsoft.OpenApi.OpenApiSpecVersion specVersion, string! format, Microsoft.OpenApi.OpenApiWriterSettings? settings) -> System.Threading.Tasks.Task<string!>!

test/Microsoft.OpenApi.Tests/Extensions/OpenApiSerializableExtensionsTests.cs

@@ -1,4 +1,5 @@
 using System.IO;
+using System.Threading;
 using System.Threading.Tasks;
 using Xunit;
 
@@ -90,4 +91,60 @@ public async Task UsesTheTerseOutputInformationFromSettingsNoSettings()
 
         Assert.Equal("{\n  \"name\": \"param1\",\n  \"in\": \"query\",\n  \"description\": \"A sample parameter\",\n  \"schema\": {\n    \"type\": \"string\"\n  }\n}", output);
     }
+
+    [Fact]
+    public async Task SerializeAsJsonAsync_WithTerseSettings_WritesToStream()
+    {
+        var parameter = new OpenApiParameter
+        {
+            Name = "param1",
+            In = ParameterLocation.Query,
+            Schema = new OpenApiSchema { Type = JsonSchemaType.String }
+        };
+
+        var settings = new OpenApiJsonWriterSettings { Terse = true };
+
+        using var stream = new MemoryStream();
+        await parameter.SerializeAsJsonAsync(stream, OpenApiSpecVersion.OpenApi3_1, settings, CancellationToken.None);
+
+        stream.Position = 0;
+        using var reader = new StreamReader(stream);
+        var output = await reader.ReadToEndAsync();
+
+        Assert.Equal("{\"name\":\"param1\",\"in\":\"query\",\"schema\":{\"type\":\"string\"}}", output);
+    }
+
+    [Fact]
+    public async Task SerializeAsJsonAsync_WithTerseSettings_ReturnsCompactString()
+    {
+        var parameter = new OpenApiParameter
+        {
+            Name = "param1",
+            In = ParameterLocation.Query,
+            Schema = new OpenApiSchema { Type = JsonSchemaType.String }
+        };
+
+        var settings = new OpenApiJsonWriterSettings { Terse = true };
+
+        var output = await parameter.SerializeAsJsonAsync(OpenApiSpecVersion.OpenApi3_1, settings);
+
+        Assert.Equal("{\"name\":\"param1\",\"in\":\"query\",\"schema\":{\"type\":\"string\"}}", output);
+    }
+
+    [Fact]
+    public async Task SerializeAsync_WithSettings_ReturnsFormattedString()
+    {
+        var parameter = new OpenApiParameter
+        {
+            Name = "param1",
+            In = ParameterLocation.Query,
+            Schema = new OpenApiSchema { Type = JsonSchemaType.String }
+        };
+
+        var settings = new OpenApiJsonWriterSettings { Terse = false };
+
+        var output = await parameter.SerializeAsync(OpenApiSpecVersion.OpenApi3_1, OpenApiConstants.Json, settings);
+
+        Assert.Equal("{\n  \"name\": \"param1\",\n  \"in\": \"query\",\n  \"schema\": {\n    \"type\": \"string\"\n  }\n}", output);
+    }
 }