broken_enums.rb

class EnumDeliveryType < ::Protobuf::Enum
  define :STANDARD, 1
  define :PRIORITY, 2
  define :NEXT_DAY, 3
  define :OVERNIGHT, 4
end

# # # # # # # # # # # # # PART 1 # # # # # # # # # # # # #

##
# ENCODE
#

irb(main):008:0> s = Dora::Warehouse::Shipment.new
#=> #<Dora::Warehouse::Shipment ... delivery_type=#<Protobuf::Enum(Dora::Warehouse::EnumDeliveryType)::STANDARD=1>>
irb(main):010:0> s.delivery_type = 4
#=> #<Dora::Warehouse::Shipment ... delivery_type=#<Protobuf::Enum(Dora::Warehouse::EnumDeliveryType)::OVERNIGHT=4>>
irb(main):014:0> s.encode
#=> "(\x04"
irb(main):027:0> s.delivery_type = 5
####################################
# NOTE: This breaks here
####################################
# TypeError: Invalid Enum value: 5 for delivery_type
# 	from /Users/garrettthornburg/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/protobuf-3.5.1/lib/protobuf/field/enum_field.rb:50:in `block (2 levels) in define_setter'
# 	from (irb):27
# 	from /Users/garrettthornburg/.rbenv/versions/2.2.2/bin/irb:11:in `<main>'

# # # # # # # # # # # # # PART 2 # # # # # # # # # # # # #

## 
# DECODE
#

# From above we know that 4 is a valid enum
irb(main):029:0* Dora::Warehouse::Shipment.decode("(\x04")
#=> #<Dora::Warehouse::Shipment ... delivery_type=#<Protobuf::Enum(Dora::Warehouse::EnumDeliveryType)::OVERNIGHT=4>>

# What about hard coding to 5?
irb(main):030:0* Dora::Warehouse::Shipment.decode("(\x05")
###############################################
# NOTE: The enum is thrown away and 1 is chosen
###############################################
#=> #<Dora::Warehouse::Shipment ... delivery_type=#<Protobuf::Enum(Dora::Warehouse::EnumDeliveryType)::STANDARD=1>>