api_test.rb

require 'rubygems'
gem 'savon', '=1.1.0'
require 'savon'

WSDL_URL  = "https://testenv.w-w-i-s.com/hb/51/api.asmx?wsdl"
HMAC      = 'string'
CLIENT_ID = 'AHHRV'
MAIN_HEADER = {
  'Credentials' => {
    'HMac' => HMAC,
    'ClientID' => CLIENT_ID,
    'UserName' => 'ariel1234',
    'Password' => 'worldwide1'
  }
}

puts "Testing connection to endpoint API: '#{WSDL_URL}' ..."
client = Savon.client do |wsdl, http|
  wsdl.document = WSDL_URL
  http.auth.ssl.verify_mode = :none
end

# Showing operations
operations = client.wsdl.soap_actions
puts "The operations available to call on this endpoint are:"
operations.each do |op|
  puts "\t+ #{op}"
end

# === Get Accounts ===
# <soap:Envelope xmlns="http://www.w-w-i-s.com/hb/51" 
#       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
#       xmlns:xsd="http://www.w3.org/2001/XMLSchema" 
#       xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" >
#    <soap:Header>
#       <Credentials>
#          <HMac>string</HMac>
#          <ClientID>AHHRV</ClientID>
#          <UserName>ariel1234</UserName>
#          <Password>worldwide1</Password>
#          <!--<SessionKey>3ucvciuejbtf1yeu4fpsnfuj</SessionKey>-->
#       </Credentials>
#    </soap:Header>
#    <soap:Body>
#       <GetAccounts>
#          <accttype>All</accttype>
#          <skiprefresh>false</skiprefresh>
#       </GetAccounts>
#    </soap:Body>
# </soap:Envelope>



body = {
  'GetAccounts' => {
    'accttype' => "All",
    'skiprefresh' => 'false'
  }
}
response = client.request :soap, :get_accounts do
  soap.header = MAIN_HEADER
  soap.body = body
end