public void AddTypeNameAnnotationAsNeeded_AddsAnnotation_InJsonLightMetadataMode()
        {
            // Arrange
            IEdmPrimitiveTypeReference edmPrimitiveType = EdmLibHelpers.GetEdmPrimitiveTypeReferenceOrNull(typeof(short));
            ODataPrimitiveValue primitive = new ODataPrimitiveValue((short)1);

            // Act
            ODataPrimitiveSerializer.AddTypeNameAnnotationAsNeeded(primitive, edmPrimitiveType, ODataMetadataLevel.FullMetadata);

            // Assert
            SerializationTypeNameAnnotation annotation = primitive.GetAnnotation<SerializationTypeNameAnnotation>();
            Assert.NotNull(annotation); // Guard
            Assert.Equal("Edm.Int16", annotation.TypeName);
        }
        public void AddTypeNameAnnotationAsNeeded_DoesNotAddAnnotation_InDefaultMetadataMode()
        {
            // Arrange
            IEdmPrimitiveTypeReference edmPrimitiveType = EdmLibHelpers.GetEdmPrimitiveTypeReferenceOrNull(typeof(int));
            ODataPrimitiveValue primitive = new ODataPrimitiveValue(0);

            // Act
            ODataPrimitiveSerializer.AddTypeNameAnnotationAsNeeded(primitive, edmPrimitiveType, ODataMetadataLevel.Default);

            // Assert
            Assert.Null(primitive.GetAnnotation<SerializationTypeNameAnnotation>());
        }