Added more resources that can be tested

Updated the example to show how to use them
Refactored the way in which the VM is retrieved

Signed-off-by: Russell Seymour <russell.seymour@turtlesystems.co.uk>

controls/example_vm_image.rb

@@ -12,5 +12,13 @@ control 'azure-vm-1.0' do
     its('sku') { should eq '16.04-LTS' }
     its('publisher') { should eq 'Canonical' }
     its('offer') { should eq 'UbuntuServer' }
+    its('size') { should eq 'Standard_DS1_v2' }
+    its('location') { should eq 'westeurope' }
+    its('boot_diagnostics?') { should be true }
+    its('nic_count') { should eq 1 }
+    its('username') { should eq 'azure' }
+    its('password_authentication?') { should be false }
+    its('ssh_key_count') { should eq 1 }
+    its('os_type') { should eq 'Linux' }
   end
 end

libraries/azure_vm.rb

@@ -14,39 +14,148 @@ class AzureVm < Inspec.resource(1)
     end
   "
 
+  attr_accessor :vm
+
   # Load the configuration file on initialisation
   def initialize(opts)
-    @opts = opts
-    @helpers = Helpers.new
+    opts = opts
+    helpers = Helpers.new
+    @vm = helpers.get_vm(opts[:host], opts[:resource_group])
+
+    # Ensure that the vm is an object
+    raise format('An error has occured: %s', vm) if vm.instance_of?(String)
   end
 
+  # Determine the SKU used to create the machine
+  #
+  # == Returns:
+  # String showing the sku, e.g. 16.04.0-LTS
+  #
   def sku
-    vm = @helpers.get_vm(@opts[:host], @opts[:resource_group])
-
-    if vm.instance_of?(String)
-      vm
-    else
-      vm.storage_profile.image_reference.sku
-    end
+    vm.storage_profile.image_reference.sku
   end
 
+  # Determine the publisher of the SKU
+  #
+  # == Returns:
+  # String of the publisher, e.g. Canonical
+  #
   def publisher
-    vm = @helpers.get_vm(@opts[:host], @opts[:resource_group])
-
-    if vm.instance_of?(String)
-      vm
-    else
-      vm.storage_profile.image_reference.publisher
-    end
+    vm.storage_profile.image_reference.publisher
   end
 
+  # Determine the offer from the publisher
+  #
+  # == Returns:
+  # String of the offer, e.g. UbuntuServer
+  #
   def offer
-    vm = @helpers.get_vm(@opts[:host], @opts[:resource_group])
+    vm.storage_profile.image_reference.offer
+  end
 
-    if vm.instance_of?(String)
-      vm
+  # Determine the size of the machine
+  #
+  # == Returns:
+  # String showing the size of the machine, e.g. Standard_DS1_v2
+  #
+  def size
+    vm.hardware_profile.vm_size
+  end
+
+  # Determine the location of the vm
+  #
+  # == Returns:
+  # String representing the location of the machinem, e.g. westeurope
+  #
+  def location
+    vm.location
+  end
+
+  # State if boot diagnostics is enabled
+  #
+  # == Returns:
+  # Boolean
+  #
+  def boot_diagnostics?
+    vm.diagnostics_profile.boot_diagnostics.enabled
+  end
+
+  # Determine how many network cards are connected to the machine
+  #
+  # == Returns:
+  # Integer
+  #
+  def nic_count
+    vm.network_profile.network_interfaces.length
+  end
+
+  # The admin username for the machine
+  #
+  # == Returns:
+  # String of the admin username when the machine was created, e.g. azure
+  #
+  def username
+    vm.os_profile.admin_username
+  end
+
+  # The computername as seen by the operating system
+  # This might be different to the VM name as seen in Azure
+  #
+  # == Returns:
+  # String of the computername
+  #
+  def computername
+    vm.os_profile.computer_name
+  end
+
+  # Alias for computername
+  #
+  # == Returns:
+  # String of the computername
+  #
+  def hostname
+    computername
+  end
+
+  # Determine if password authentication is enabled
+  # For Windows this is always True.  On Linux this will be determined
+  #
+  # == Returns:
+  # Boolean
+  #
+  def password_authentication?
+
+    # if the vm has a linux configuration then interrogate that, otherwise return true
+    if !vm.os_profile.linux_configuration.nil?
+      !vm.os_profile.linux_configuration.disable_password_authentication
     else
-      vm.storage_profile.image_reference.offer
+      true
     end
   end
+
+  # How many SSH keys have been added to the machine
+  # For Windows this will be 0, for Linux this will be determined
+  #
+  # == Returns:
+  # Integer
+  #
+  def ssh_key_count
+
+    if !vm.os_profile.linux_configuration.nil?
+      vm.os_profile.linux_configuration.ssh.public_keys.length
+    else
+      0
+    end
+
+  end
+
+  # Determine the Operating system type using the os_disk object
+  #
+  # == Returns:
+  # String of the OS type, e.g. Windows or Linux
+  #
+  def os_type
+    vm.storage_profile.os_disk.os_type
+  end
+
 end