set default_currency before every test and simplify tests

Author: yukideluxe

spec/money_spec.rb

@@ -72,16 +72,9 @@
       end
 
       context 'without a default' do
-        around do |example|
-          default_currency = Money.default_currency
+        it 'should throw an NoCurrency Error' do
           Money.default_currency = nil
 
-          example.run
-
-          Money.default_currency = default_currency
-        end
-
-        it 'should throw an NoCurrency Error' do
           expect { money }.to raise_error(Money::Currency::NoCurrency)
         end
       end
@@ -1018,9 +1011,6 @@ def m.amount
   end
 
   describe ".default_currency" do
-    before { Money.setup_defaults }
-    after { Money.setup_defaults }
-
     it "accepts a lambda" do
       Money.default_currency = lambda { :eur }
       expect(Money.default_currency).to eq Money::Currency.new(:eur)
@@ -1061,8 +1051,6 @@ def m.amount
   end
 
   describe '.default_bank' do
-    after { Money.setup_defaults }
-
     it 'accepts a bank instance' do
       Money.default_bank = Money::Bank::SingleCurrency.instance
       expect(Money.default_bank).to be_instance_of(Money::Bank::SingleCurrency)

spec/spec_helper.rb

@@ -113,8 +113,7 @@
   # as the one that triggered the failure.
   Kernel.srand config.seed
 
-  # Code to run once before the entire test suite
-  config.before(:suite) do
+  config.before(:each) do
     Money.default_currency = Money::Currency.new("USD")
   end
 end