Add unit test to validate

Author: MaggieKimani1

test/Microsoft.OpenApi.Readers.Tests/V3Tests/OpenApiMediaTypeTests.cs

@@ -4,9 +4,11 @@
 using System.IO;
 using FluentAssertions;
 using Microsoft.OpenApi.Any;
+using Microsoft.OpenApi.Extensions;
 using Microsoft.OpenApi.Models;
 using Microsoft.OpenApi.Readers.ParseNodes;
 using Microsoft.OpenApi.Readers.V3;
+using Microsoft.OpenApi.Tests;
 using Xunit;
 
 namespace Microsoft.OpenApi.Readers.Tests.V3Tests
@@ -77,5 +79,43 @@ public void ParseMediaTypeWithExamplesShouldSucceed()
                     }
                 });
         }
+
+        [Fact]
+        public void ParseMediaTypeWithEmptyArrayInExamplesWorks()
+        {
+            // Arrange
+            var expected = @"{
+  ""schema"": {
+    ""type"": ""array"",
+    ""items"": {
+      ""type"": ""object"",
+      ""properties"": {
+        ""id"": {
+          ""type"": ""string""
+        }
+      }
+    }
+  },
+  ""examples"": {
+    ""Success response - no results"": {
+      ""value"": [ ]
+    }
+  }
+}
+";
+            MapNode node;
+            using (var stream = Resources.GetStream(Path.Combine(SampleFolderPath, "examplesWithEmptyArray.json")))
+            {
+                node = TestHelper.CreateYamlMapNode(stream);
+            }
+
+            // Act
+            var mediaType = OpenApiV3Deserializer.LoadMediaType(node);
+            var serialized = mediaType.SerializeAsJson(OpenApiSpecVersion.OpenApi3_0);
+
+            // Assert
+            serialized.MakeLineBreaksEnvironmentNeutral()
+                .Should().BeEquivalentTo(expected.MakeLineBreaksEnvironmentNeutral());
+        }
     }
 }

test/Microsoft.OpenApi.Readers.Tests/V3Tests/Samples/OpenApiMediaType/examplesWithEmptyArray.json

@@ -0,0 +1,18 @@
+{
+  "schema": {
+    "type": "array",
+    "items": {
+      "type": "object",
+      "properties": {
+        "id": {
+          "type": "string"
+        }
+      }
+    }
+  },
+  "examples": {
+    "Success response - no results": {
+      "value": []
+    }
+  }
+}