From 649dfe3167f03d920c0392653dce0323468ed543 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Thu, 2 Oct 2025 16:38:40 +0000
Subject: [PATCH 1/2] Initial plan


From d0103847dd570ee6c65e23ee9a887269599bf05f Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Thu, 2 Oct 2025 16:47:25 +0000
Subject: [PATCH 2/2] Fix allowReserved typo in V3 and V31 encoding
 deserializers and add regression tests

Co-authored-by: baywet <7905502+baywet@users.noreply.github.com>
---
 .../Reader/V3/OpenApiEncodingDeserializer.cs  |  2 +-
 .../Reader/V31/OpenApiEncodingDeserializer.cs |  2 +-
 .../V31Tests/OpenApiEncodingTests.cs          | 33 +++++++++++++++++++
 .../encodingWithAllowReserved.yaml            |  5 +++
 .../V3Tests/OpenApiEncodingTests.cs           | 17 ++++++++++
 .../encodingWithAllowReserved.yaml            |  5 +++
 6 files changed, 62 insertions(+), 2 deletions(-)
 create mode 100644 test/Microsoft.OpenApi.Readers.Tests/V31Tests/OpenApiEncodingTests.cs
 create mode 100644 test/Microsoft.OpenApi.Readers.Tests/V31Tests/Samples/OpenApiEncoding/encodingWithAllowReserved.yaml
 create mode 100644 test/Microsoft.OpenApi.Readers.Tests/V3Tests/Samples/OpenApiEncoding/encodingWithAllowReserved.yaml

diff --git a/src/Microsoft.OpenApi/Reader/V3/OpenApiEncodingDeserializer.cs b/src/Microsoft.OpenApi/Reader/V3/OpenApiEncodingDeserializer.cs
index a55e08818..5c3cc5a93 100644
--- a/src/Microsoft.OpenApi/Reader/V3/OpenApiEncodingDeserializer.cs
+++ b/src/Microsoft.OpenApi/Reader/V3/OpenApiEncodingDeserializer.cs
@@ -44,7 +44,7 @@ internal static partial class OpenApiV3Deserializer
                 }
             },
             {
-                "allowedReserved", 
+                "allowReserved", 
                 (o, n, _) =>
                 {
                     var allowReserved = n.GetScalarValue();
diff --git a/src/Microsoft.OpenApi/Reader/V31/OpenApiEncodingDeserializer.cs b/src/Microsoft.OpenApi/Reader/V31/OpenApiEncodingDeserializer.cs
index c3f52d272..6474dc96b 100644
--- a/src/Microsoft.OpenApi/Reader/V31/OpenApiEncodingDeserializer.cs
+++ b/src/Microsoft.OpenApi/Reader/V31/OpenApiEncodingDeserializer.cs
@@ -43,7 +43,7 @@ internal static partial class OpenApiV31Deserializer
                 }
             },
             {
-                "allowedReserved", (o, n, _) =>
+                "allowReserved", (o, n, _) =>
                 {
                     var allowReserved = n.GetScalarValue();
                     if (allowReserved is not null)
diff --git a/test/Microsoft.OpenApi.Readers.Tests/V31Tests/OpenApiEncodingTests.cs b/test/Microsoft.OpenApi.Readers.Tests/V31Tests/OpenApiEncodingTests.cs
new file mode 100644
index 000000000..6a03ea015
--- /dev/null
+++ b/test/Microsoft.OpenApi.Readers.Tests/V31Tests/OpenApiEncodingTests.cs
@@ -0,0 +1,33 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT license.
+
+using System.IO;
+using System.Threading.Tasks;
+using Microsoft.OpenApi.Reader;
+using Xunit;
+
+namespace Microsoft.OpenApi.Readers.Tests.V31Tests
+{
+    [Collection("DefaultSettings")]
+    public class OpenApiEncodingTests
+    {
+        private const string SampleFolderPath = "V31Tests/Samples/OpenApiEncoding/";
+
+        [Fact]
+        public async Task ParseEncodingWithAllowReservedShouldSucceed()
+        {
+            // Act
+            var encoding = await OpenApiModelFactory.LoadAsync<OpenApiEncoding>(Path.Combine(SampleFolderPath, "encodingWithAllowReserved.yaml"), OpenApiSpecVersion.OpenApi3_1, new(), SettingsFixture.ReaderSettings);
+
+            // Assert
+            Assert.Equivalent(
+                new OpenApiEncoding
+                {
+                    ContentType = "application/x-www-form-urlencoded",
+                    Style = ParameterStyle.Form,
+                    Explode = true,
+                    AllowReserved = true
+                }, encoding);
+        }
+    }
+}
diff --git a/test/Microsoft.OpenApi.Readers.Tests/V31Tests/Samples/OpenApiEncoding/encodingWithAllowReserved.yaml b/test/Microsoft.OpenApi.Readers.Tests/V31Tests/Samples/OpenApiEncoding/encodingWithAllowReserved.yaml
new file mode 100644
index 000000000..fcb6c1063
--- /dev/null
+++ b/test/Microsoft.OpenApi.Readers.Tests/V31Tests/Samples/OpenApiEncoding/encodingWithAllowReserved.yaml
@@ -0,0 +1,5 @@
+# https://github.com/OAI/OpenAPI-Specification/blob/main/versions/3.1.0.md#encodingObject
+contentType: application/x-www-form-urlencoded
+style: form
+explode: true
+allowReserved: true
diff --git a/test/Microsoft.OpenApi.Readers.Tests/V3Tests/OpenApiEncodingTests.cs b/test/Microsoft.OpenApi.Readers.Tests/V3Tests/OpenApiEncodingTests.cs
index db78cc0c7..0c0c4e96f 100644
--- a/test/Microsoft.OpenApi.Readers.Tests/V3Tests/OpenApiEncodingTests.cs
+++ b/test/Microsoft.OpenApi.Readers.Tests/V3Tests/OpenApiEncodingTests.cs
@@ -55,5 +55,22 @@ public async Task ParseAdvancedEncodingShouldSucceed()
                     }
                 }, encoding);
         }
+
+        [Fact]
+        public async Task ParseEncodingWithAllowReservedShouldSucceed()
+        {
+            // Act
+            var encoding = await OpenApiModelFactory.LoadAsync<OpenApiEncoding>(Path.Combine(SampleFolderPath, "encodingWithAllowReserved.yaml"), OpenApiSpecVersion.OpenApi3_0, new(), SettingsFixture.ReaderSettings);
+
+            // Assert
+            Assert.Equivalent(
+                new OpenApiEncoding
+                {
+                    ContentType = "application/x-www-form-urlencoded",
+                    Style = ParameterStyle.Form,
+                    Explode = true,
+                    AllowReserved = true
+                }, encoding);
+        }
     }
 }
diff --git a/test/Microsoft.OpenApi.Readers.Tests/V3Tests/Samples/OpenApiEncoding/encodingWithAllowReserved.yaml b/test/Microsoft.OpenApi.Readers.Tests/V3Tests/Samples/OpenApiEncoding/encodingWithAllowReserved.yaml
new file mode 100644
index 000000000..259ba7fdf
--- /dev/null
+++ b/test/Microsoft.OpenApi.Readers.Tests/V3Tests/Samples/OpenApiEncoding/encodingWithAllowReserved.yaml
@@ -0,0 +1,5 @@
+# https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.0.md#encodingObject
+contentType: application/x-www-form-urlencoded
+style: form
+explode: true
+allowReserved: true