Refactor infra vm check_remove_from_provider method and test.

Refactored the check_remove_from_provider method for Infrastructure Vm retirement.
Updated tests.

This PR is based on the issue below.
ManageIQ/manageiq#12038

@miq-bot add_label refactoring

content/automate/ManageIQ/Infrastructure/VM/Retirement/StateMachines/Methods.class/__methods__/check_removed_from_provider.rb

@@ -2,14 +2,44 @@
 # Description: This method checks to see if the VM has been removed from the provider
 #
 
-vm = $evm.root['vm']
+module ManageIQ
+  module Automate
+    module Infrastructure
+      module VM
+        module Retirement
+          module StateMachines
+            class CheckRemovedFromProvider
+              def initialize(handle = $evm)
+                @handle = handle
+              end
 
-$evm.root['ae_result'] = 'ok'
+              def main
+                check_removed_from_provider(vm)
+              end
 
-if vm && $evm.get_state_var('vm_removed_from_provider')
-  if vm.ext_management_system
-    vm.refresh
-    $evm.root['ae_result']     = 'retry'
-    $evm.root['ae_retry_interval'] = '60.seconds'
+              private
+
+              def vm
+                raise "ERROR - vm object not passed in" unless @handle.root['vm']
+                @handle.root['vm']
+              end
+
+              def check_removed_from_provider(vm)
+                @handle.root['ae_result'] = 'ok'
+                if vm.ext_management_system && @handle.get_state_var('vm_removed_from_provider')
+                  vm.refresh
+                  @handle.root['ae_result'] = 'retry'
+                  @handle.root['ae_retry_interval'] = '60.seconds'
+                end
+              end
+            end
+          end
+        end
+      end
+    end
   end
 end
+
+if __FILE__ == $PROGRAM_NAME
+  ManageIQ::Automate::Infrastructure::VM::Retirement::StateMachines::CheckRemovedFromProvider.new.main
+end

spec/content/automate/ManageIQ/Infrastructure/VM/Retirement/StateMachines/Methods.class/__methods__/check_removed_from_provider_spec.rb

@@ -0,0 +1,55 @@
+require_domain_file
+
+describe ManageIQ::Automate::Infrastructure::VM::Retirement::StateMachines::CheckRemovedFromProvider do
+  let(:user) { FactoryGirl.create(:user_with_group) }
+  let(:zone) { FactoryGirl.create(:zone) }
+  let(:ems)  { FactoryGirl.create(:ems_vmware, :zone => zone, :last_refresh_date => Time.now.getlocal - 100) }
+  let(:host) { FactoryGirl.create(:host) }
+  let(:vm) do
+    FactoryGirl.create(:vm_vmware,
+                       :raw_power_state => "poweredOff",
+                       :registered      => false,
+                       :ems_id          => ems.id)
+  end
+
+  # let(:ae_state) {'vm_removed_from_provider' => true}
+
+  let(:svc_model_vmware_ems) do
+    MiqAeMethodService::MiqAeServiceExtManagementSystem.find(ems.id)
+  end
+
+  let(:svc_model_vm) do
+    MiqAeMethodService::MiqAeServiceVm.find(vm.id)
+  end
+
+  let(:root_hash) do
+   {'vm' => svc_model_vm }
+  end
+
+  let(:root_object) do
+    Spec::Support::MiqAeMockObject.new(root_hash)
+  end
+
+  let(:ae_service) do
+    Spec::Support::MiqAeMockService.new(root_object).tap do |service|
+      current_object = Spec::Support::MiqAeMockObject.new
+      current_object.parent = root_object
+      service.object = current_object
+    end
+  end
+
+  it "returns 'ok' if the vm is not connected to a ems" do
+    described_class.new(ae_service).main
+    expect(ae_service.root['vm'].registered).to eq(false)
+    expect(ae_service.root['ae_result']).to eq('ok')
+  end
+
+  it "returns 'retry' if the vm is still connected to ems" do
+    ae_service.set_state_var('vm_removed_from_provider', true)
+    vm.update_attributes(:host => host, :registered => true)
+    allow_any_instance_of(Vm).to receive(:refresh_ems)
+    described_class.new(ae_service).main
+    vm.reload
+    expect(ae_service.root['ae_result']).to eq('retry')
+  end
+end