support well-known env-vars for setting username and password

lib/zanzibar.rb

@@ -13,6 +13,8 @@ module Zanzibar
     def initialize(args = {})
       if args[:username]
         @@username = args[:username]
+      elsif ENV['ZANZIBAR_USER']
+        @@username = ENV['ZANZIBAR_USER']
       else
         @@username = ENV['USER']
       end
@@ -22,11 +24,15 @@ module Zanzibar
       else
         @@wsdl = get_wsdl_location
       end
+
       if args[:pwd]
         @@password = args[:pwd]
+      elsif ENV['ZANZIBAR_PASSWORD']
+        @@password = ENV['ZANZIBAR_PASSWORD']
       else
         @@password = prompt_for_password
       end
+
       if args[:domain]
         @@domain = args[:domain]
       else
@@ -36,6 +42,14 @@ module Zanzibar
       init_client(args[:globals])
     end
 
+    def get_client_username
+      @@username
+    end
+
+    def get_client_password
+      @@password
+    end
+
     ## Initializes the Savon client class variable with the wdsl document location and optional global variables
     # @param globals{}, optional
 

spec/zanzibar_spec.rb

@@ -110,4 +110,14 @@ describe 'Zanzibar Test' do
     expect(File.read('attachment.txt')).to eq("I am a secret attachment\n")
     File.delete('attachment.txt')
   end
+
+  it 'should use environment variables for credentials' do
+    ENV['ZANZIBAR_USER'] = "environment_user"
+    ENV['ZANZIBAR_PASSWORD'] = "environment_password"
+    client = Zanzibar::Zanzibar.new(domain: 'zanzitest.net', wsdl: 'spec/scrt.wsdl')
+    expect(client.get_client_username).to eq(ENV['ZANZIBAR_USER'])
+    expect(client.get_client_password).to eq(ENV['ZANZIBAR_PASSWORD'])
+    ENV.delete 'ZANZIBAR_PASSWORD'
+    ENV.delete 'ZANZIBAR_USER'
+  end
 end