```ruby
FactoryGirl.define do
  factory :vm_azure, :class => "ManageIQ::Providers::Azure::CloudManager::Vm", :parent => :vm_cloud do
    location "westus"
    vendor   "azure"
    uid_ems  "01234567890\\test_resource_group\\microsoft.resources\\vm_1"
    ems_ref  "01234567890\\test_resource_group\\microsoft.resources\\vm_1"
    raw_power_state "VM running"
    name "vm_1"

    trait :with_provider do
      after(:create) do |x|
        FactoryGirl.create(:ems_azure, :vms => [x])
      end
    end
  end
end
```

Convert backslashes to forward slashes.
user
```ruby
FactoryGirl.define do
  factory :vm_azure, :class => "ManageIQ::Providers::Azure::CloudManager::Vm", :parent => :vm_cloud do
    location "westus"
    vendor   "azure"
    uid_ems  "01234567890/test_resource_group/microsoft.resources/vm_1"
    ems_ref  "01234567890/test_resource_group/microsoft.resources/vm_1"
    raw_power_state "VM running"
    name "vm_1"

    trait :with_provider do
      after(:create) do |x|
        FactoryGirl.create(:ems_azure, :vms => [x])
      end
    end
  end
end
```
assistant