From 3bacb48238e0783ad5cc6c50be9c004cc40a1963 Mon Sep 17 00:00:00 2001
From: Rico Suter <mail@rsuter.com>
Date: Thu, 14 Jun 2018 19:20:33 +0200
Subject: [PATCH] Correctly handle JArray in generator, closes
 https://github.com/RSuter/NSwag/issues/755

---
 .../Generation/ArrayGenerationTests.cs        | 31 +++++++++++++++++++
 .../Generation/DefaultReflectionService.cs    |  3 ++
 2 files changed, 34 insertions(+)
 create mode 100644 src/NJsonSchema.Tests/Generation/ArrayGenerationTests.cs

diff --git a/src/NJsonSchema.Tests/Generation/ArrayGenerationTests.cs b/src/NJsonSchema.Tests/Generation/ArrayGenerationTests.cs
new file mode 100644
index 000000000..181ac16e5
--- /dev/null
+++ b/src/NJsonSchema.Tests/Generation/ArrayGenerationTests.cs
@@ -0,0 +1,31 @@
+using System.Threading.Tasks;
+using Newtonsoft.Json.Linq;
+using NJsonSchema.Generation;
+using Xunit;
+
+namespace NJsonSchema.Tests.Generation
+{
+    public class ArrayGenerationTests
+    {
+        public class ClassWithJArray
+        {
+            public string Foo { get; set; }
+
+            public JArray Array { get; set; }
+        }
+
+        [Fact]
+        public async Task When_property_is_JArray_then_schema_with_any_array_is_generated()
+        {
+            //// Act
+            var schema = await JsonSchema4.FromTypeAsync<ClassWithJArray>(new JsonSchemaGeneratorSettings { SchemaType = SchemaType.OpenApi3 });
+            var json = schema.ToJson();
+
+            //// Assert
+            Assert.Equal(2, schema.ActualProperties.Count);
+            var arrayProperty = schema.ActualProperties["Array"].ActualTypeSchema;
+            Assert.Equal(JsonObjectType.Array, arrayProperty.Type);
+            Assert.True(arrayProperty.Item.ActualTypeSchema.IsAnyType);
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/NJsonSchema/Generation/DefaultReflectionService.cs b/src/NJsonSchema/Generation/DefaultReflectionService.cs
index ea52df6ee..d9bd68bed 100644
--- a/src/NJsonSchema/Generation/DefaultReflectionService.cs
+++ b/src/NJsonSchema/Generation/DefaultReflectionService.cs
@@ -105,6 +105,9 @@ public virtual JsonTypeDescription GetDescription(Type type, IEnumerable<Attribu
             if (type == typeof(byte[]))
                 return JsonTypeDescription.Create(type, JsonObjectType.String, isNullable, JsonFormatStrings.Byte);
 
+            if (type == typeof(JArray))
+                return JsonTypeDescription.Create(type, JsonObjectType.Array, isNullable, null);
+
             if (type == typeof(JObject) || 
                 type == typeof(JToken) ||
                 type.FullName == "System.Dynamic.ExpandoObject" ||