Remove unnecessary storage of currency

spec/models/spree/adjustment_spec.rb

@@ -133,7 +133,7 @@ module Spree
         before { Spree::Config[:display_currency] = true }
 
         it "shows the currency" do
-          expect(adjustment.display_amount.to_s).to eq "$10.55 #{Spree::Config[:currency]}"
+          expect(adjustment.display_amount.to_s).to eq "$10.55 AUD"
         end
       end
 
@@ -167,7 +167,7 @@ module Spree
 
     context '#currency' do
       it 'returns the globally configured currency' do
-        expect(adjustment.currency).to eq Spree::Config[:currency]
+        expect(adjustment.currency).to eq "AUD"
       end
     end
 

spec/models/spree/order_spec.rb

@@ -516,7 +516,7 @@ RSpec.describe Spree::Order do
       before { order.currency = nil }
 
       it "returns the globally configured currency" do
-        expect(order.currency).to eq Spree::Config[:currency]
+        expect(order.currency).to eq "AUD"
       end
     end
   end

spec/models/spree/variant_spec.rb

@@ -292,7 +292,7 @@ RSpec.describe Spree::Variant do
   context "#currency" do
     it "returns the globally configured currency" do
       variant.save!
-      expect(variant.currency).to eq Spree::Config[:currency]
+      expect(variant.currency).to eq "AUD"
     end
   end
 
@@ -309,7 +309,7 @@ RSpec.describe Spree::Variant do
 
       it "populates cost currency with the default value on save" do
         variant.save!
-        expect(variant.cost_currency).to eq Spree::Config[:currency]
+        expect(variant.cost_currency).to eq "AUD"
       end
     end
   end