Added abstract schema checking to CSharpValueGenerator.GetDefaultValue

src/NJsonSchema.CodeGeneration.CSharp/CSharpValueGenerator.cs

@@ -74,7 +74,7 @@ public override string GetDefaultValue(JsonSchema schema, bool allowsNull, strin
  ? _settings.ArrayInstanceType + targetType.Substring(_settings.ArrayType.Length)
  : targetType;
 
- return $"new {targetType}()";
+ return schema.IsAbstract ? null : $"new {targetType}()";
  }
  }
  }

src/NJsonSchema.CodeGeneration.Tests/DefaultValueGeneratorTests.cs

@@ -218,5 +218,32 @@ public void When_schema_has_default_value_of_enum_it_is_generated_in_CSharp_and_
  Assert.Equal("Ns.MyEnum.bar", csharpValue);
  Assert.Equal("MyEnum.bar", typescriptValue);
  }
+
+ [Fact]
+ public void When_schema_has_required_abstract_class_it_generates_no_default_value_for_in_CSharp_and_TypeScript()
+ {
+ //// Arrange
+ var csharpSettings = new CSharpGeneratorSettings();
+ var csharpGenerator = new CSharpValueGenerator(csharpSettings);
+ var csharpTypeResolver = new CSharpTypeResolver(csharpSettings);
+
+ //// Act
+ var schema = new JsonSchema()
+ {
+ Type = JsonObjectType.Object,
+ IsAbstract = true
+ };
+
+ var typescriptSettings = new TypeScriptGeneratorSettings();
+ var typescriptGenerator = new TypeScriptValueGenerator(typescriptSettings);
+ var typescriptTypeResolver = new TypeScriptTypeResolver(typescriptSettings);
+
+ var csharpValue = csharpGenerator.GetDefaultValue(schema, false, "BaseClass", "BaseClass", true, csharpTypeResolver);
+ var typescriptValue = typescriptGenerator.GetDefaultValue(schema, false, "BaseClass", "BaseClass", true, typescriptTypeResolver);
+
+ //// Assert
+ Assert.Null(csharpValue);
+ Assert.Null(typescriptValue);
+ }
  }
 }