Make enum description reading tolerant to invalid data

Author: lahma

src/NJsonSchema.CodeGeneration.CSharp.Tests/NJsonSchema.CodeGeneration.CSharp.Tests.csproj

@@ -11,7 +11,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <Content Include="References\*.json" CopyToOutputDirectory="Always" />
+        <Content Include="References\*.json" CopyToOutputDirectory="PreserveNewest" />
     </ItemGroup>
 
     <ItemGroup>

src/NJsonSchema.NewtonsoftJson.Tests/NJsonSchema.NewtonsoftJson.Tests.csproj

@@ -17,7 +17,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <Content Include="References\**\*.json" CopyToOutputDirectory="Always" />
+        <Content Include="References\**\*.json" CopyToOutputDirectory="PreserveNewest" />
     </ItemGroup>
 
     <ItemGroup>

src/NJsonSchema.Tests/Deserialization/DeserializationTests.cs

@@ -0,0 +1,14 @@
+using NJsonSchema.CodeGeneration.Tests;
+
+namespace NJsonSchema.Tests.Deserialization;
+
+public class DeserializationTests
+{
+    [Fact]
+    public async Task CanRoundTripPayPalOpenApi()
+    {
+        var schema = await JsonSchema.FromJsonAsync(File.OpenRead(Path.Combine("Deserialization", "TestData", "paypal_billing_subscriptions_v1.json")));
+
+        await VerifyHelper.Verify(schema.ToJson());
+    }
+}