deserialize currency amounts as BigDeciaml

lib/dnsimple/struct/charge.rb

@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
+require 'bigdecimal'
+
 module Dnsimple
   module Struct
     class Charge < Base
@@ -25,7 +27,7 @@ class ChargeItem < Base
         # @param  [String] amount
         # @return [void]
         def amount=(amount)
-          @amount = amount.to_f
+          @amount = BigDecimal(amount)
         end
       end
 
@@ -67,15 +69,15 @@ def items=(charge_items)
       # @param  [String] balance_amount
       # @return [void]
       def balance_amount=(balance_amount)
-        @balance_amount = balance_amount.to_f
+        @balance_amount = BigDecimal(balance_amount)
       end
 
       # Converts total_amount to a Float and sets it.
       #
       # @param  [String] total_amount
       # @return [void]
       def total_amount=(total_amount)
-        @total_amount = total_amount.to_f
+        @total_amount = BigDecimal(total_amount)
       end
     end
 

spec/dnsimple/client/billing_spec.rb

@@ -2,6 +2,8 @@
 
 require 'spec_helper'
 
+require 'bigdecimal/util'
+
 describe Dnsimple::Client, ".billing" do
 
   subject { described_class.new(base_url: "https://api.dnsimple.test", access_token: "a1b2c3").billing }
@@ -40,16 +42,16 @@
 
       response.data.each do |result|
         expect(result).to be_a(Dnsimple::Struct::Charge)
-        expect(result.balance_amount).to be_a(Float)
+        expect(result.balance_amount).to be_a(BigDecimal)
         expect(result.reference).to be_a(String)
         expect(result.items).to be_a(Array)
         expect(result.items[0]).to be_a(Dnsimple::Struct::Charge::ChargeItem)
       end
 
-      expect(response.data[0].total_amount).to be_a(Float)
-      expect(response.data[0].total_amount).to equal(14.5)
-      expect(response.data[0].items[0].amount).to be_a(Float)
-      expect(response.data[0].items[0].amount).to equal(14.5)
+      expect(response.data[0].total_amount).to be_a(BigDecimal)
+      expect(response.data[0].total_amount.to_s("F")).to eq("14.5")
+      expect(response.data[0].items[0].amount).to be_a(BigDecimal)
+      expect(response.data[0].items[0].amount.to_s("F")).to eq("14.5")
     end
 
     it "supports filters" do