require File.dirname(__FILE__) + "/../test_helper"

class JsonEncodingTest < Test::Unit::TestCase
  
  def test_basic_request_encoding
    r = EWS::Transaction::Request.new(basic_params)
    
    json = EWS::Transaction::Mapping.request_to_json(r)

    res = ActiveSupport::JSON.decode(json)
    assert_equal "10.13", res["amount"]
    assert_equal "Simon Brown", res["cardholder_name"]
    assert_equal "4111111111111111", res["cc_number"]
    assert_equal "1012", res["cc_expiry"]
  end
  
  def test_request_encoding_everything
    request = EWS::Transaction::Request.new(sample_everything_params)
    
    json = EWS::Transaction::Mapping.request_to_json(request)

    res = ActiveSupport::JSON.decode(json)
    sample_everything_params.keys.each do |k|
      assert_equal request.send(k), res[k.to_s]
    end
  end
  
  def test_response_decoding
    payload = <<PAYLOAD
{"bank_message": "APPROVED", "transaction_type": "00", "transaction_tag": 2238, "exact_message": "Transaction Normal"}
PAYLOAD

    r = EWS::Transaction::Mapping.json_to_response(payload)

    assert_equal "Transaction Normal", r.exact_message
    assert_nil r.error_description
    assert_equal "APPROVED", r.bank_message
    assert_equal 2238, r.transaction_tag
    assert_equal "00", r.transaction_type
  end
  
  def test_decodes_garbage_in_response
    payload = <<PAYLOAD
{"bank_message": "APPROVED", "transaction_type": "00", "transaction_tag": 2238, "exact_message": "Transaction Normal", "cardholder_name": "Simon Brown Is Not A Really Long Name But This Is", "customer_ref": "This Is A Really LONG Customer Reference", "cc_number": "411111111111111166666666666"}
PAYLOAD

    r = EWS::Transaction::Mapping.json_to_response(payload)

    assert_equal "Transaction Normal", r.exact_message
    assert_nil r.error_description
    assert_equal "APPROVED", r.bank_message
    assert_equal 2238, r.transaction_tag
    assert_equal "00", r.transaction_type

    # the following are all invalid examples of the relevant fields, so ensure we
    # decode them without complaint.
    assert_equal "Simon Brown Is Not A Really Long Name But This Is", r.cardholder_name
    assert_equal "411111111111111166666666666", r.cc_number
    assert_equal "This Is A Really LONG Customer Reference", r.customer_ref
  end
 
end