Add test to verify new Quickpay gateway behavior

 -add_testmode method should NOT add a testmode parameter to the
  post hash if a transaction id is present
 -add_testmode method should add a testmode parameter equal to the
  test? method if there is no transaction id

 refs activemerchant#234

test/unit/gateways/quickpay_test.rb

@@ -87,6 +87,18 @@ def test_supported_countries
   def test_supported_card_types
     assert_equal  [ :dankort, :forbrugsforeningen, :visa, :master, :american_express, :diners_club, :jcb, :maestro ], QuickpayGateway.supported_cardtypes
   end
+
+  def test_add_testmode_does_not_add_testmode_if_transaction_id_present
+    post_hash = {:transaction => "12345"}
+    @gateway.send(:add_testmode, post_hash)
+    assert_equal nil, post_hash[:testmode]
+  end
+
+  def test_add_testmode_adds_a_testmode_param_if_transaction_id_not_present
+    post_hash = {}
+    @gateway.send(:add_testmode, post_hash)
+    assert_equal '1', post_hash[:testmode]
+  end
 
   private