# Mocking Windows Helpers in Chefspec

**URL:** <https://discourse.chef.io/t/mocking-windows-helpers-in-chefspec/12877>\
**Category:** Chef InSpec\
**Created:** [April 5, 2018, 4:20pm UTC](https://discourse.chef.io/t/mocking-windows-helpers-in-chefspec/12877 "2018-04-05T16:20:13Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![cloverandgrape](https://sea2.discourse-cdn.com/flex016/user_avatar/discourse.chef.io/cloverandgrape/32/2233_2.png) [@cloverandgrape](https://discourse.chef.io/u/cloverandgrape)\
**Post date:** [April 5, 2018, 4:20pm UTC](https://discourse.chef.io/t/mocking-windows-helpers-in-chefspec/12877/1 "2018-04-05T16:20:13Z")

</div>

I am using Windows helpers in a cookbook to determine the version of Windows that it is running on and different resources execute depending which version it is.

I am wondering if there is a trick to mocking this check so that I can use Chefspec to write unit tests?

In my recipe:

```
 require 'chef/win32/version'
 version = Chef::ReservedNames::Win32::Version.new
 if version.windows_server_2016?

```

The error I’m seeing when I try to run a basic spec on the recipe:

```
 /opt/chefdk/embedded/lib/ruby/gems/2.3.0/gems/ffi-1.9.17/lib/ffi/library.rb:147:in 
`block in ffi_lib': Could not open library 'kernel32': kernel32: cannot open 
shared object file: No such file or directory. (LoadError)
Could not open library 'libkernel32.so': libkernel32.so: cannot open shared 
object file: No such file or directory
from /opt/chefdk/embedded/lib/ruby/gems/2.3.0/gems/ffi- 
1.9.17/lib/ffi/library.rb:100:in `map'
from /opt/chefdk/embedded/lib/ruby/gems/2.3.0/gems/ffi- 
1.9.17/lib/ffi/library.rb:100:in `ffi_lib'
from /opt/chefdk/embedded/lib/ruby/gems/2.3.0/gems/chef- 
12.18.31/lib/chef/win32/api/system.rb:135:in `<module:System>'
from /opt/chefdk/embedded/lib/ruby/gems/2.3.0/gems/chef- 
12.18.31/lib/chef/win32/api/system.rb:24:in `<module:API>'
from /opt/chefdk/embedded/lib/ruby/gems/2.3.0/gems/chef- 
12.18.31/lib/chef/win32/api/system.rb:23:in `<module:Win32>'
from /opt/chefdk/embedded/lib/ruby/gems/2.3.0/gems/chef- 
12.18.31/lib/chef/win32/api/system.rb:22:in `<class:Chef>'
from /opt/chefdk/embedded/lib/ruby/gems/2.3.0/gems/chef- 
12.18.31/lib/chef/win32/api/system.rb:21:in `<top (required)>'
...
```

---

<div class="post-metadata">

**Author:** ![apushpana](https://avatars.discourse-cdn.com/v4/letter/a/b4bc9f/32.png) [@apushpana](https://discourse.chef.io/u/apushpana)\
**Post date:** [January 30, 2019, 7:19pm UTC](https://discourse.chef.io/t/mocking-windows-helpers-in-chefspec/12877/2 "2019-01-30T19:19:06Z")

</div>

Hello,

I am seeing the same issue. Where you able to figure out a way forward with ChefSpec?  
When trying to use  
require 'chef/win32/version'  
windows\_version = Chef::ReservedNames::Win32::Version.new  
# apply user policy for 2012+  
if windows\_version.windows\_server\_2012?

expected no Exception, got #\<LoadError: Could not open library 'kernel32': kernel32: cannot open shared object file: No such fil...library 'libkernel32.so': libkernel32.so: cannot open shared object file: No such file or directory\> with backtrace:  
# /home/aish/.chefdk/gem/ruby/2.5.0/gems/ffi-1.10.0/lib/ffi/library.rb:145:in `block in ffi_lib' # /home/aish/.chefdk/gem/ruby/2.5.0/gems/ffi-1.10.0/lib/ffi/library.rb:99:in`map'  
# /home/aish/.chefdk/gem/ruby/2.5.0/gems/ffi-1.10.0/lib/ffi/library.rb:99:in `ffi_lib' # /home/aish/.chefdk/gem/ruby/2.5.0/gems/chef-14.10.9/lib/chef/win32/api/system.rb:135:in`module:System'  
# /home/aish/.chefdk/gem/ruby/2.5.0/gems/chef-14.10.9/lib/chef/win32/api/system.rb:24:in `<module:API>' # /home/aish/.chefdk/gem/ruby/2.5.0/gems/chef-14.10.9/lib/chef/win32/api/system.rb:23:in`module:Win32'  
# /home/aish/.chefdk/gem/ruby/2.5.0/gems/chef-14.10.9/lib/chef/win32/api/system.rb:22:in `<class:Chef>' # /home/aish/.chefdk/gem/ruby/2.5.0/gems/chef-14.10.9/lib/chef/win32/api/system.rb:21:in`\<top (required)\>'  
# /home/aish/.chefdk/gem/ruby/2.5.0/gems/chef-14.10.9/lib/chef/win32/version.rb:20:in `<top (required)>' # /tmp/d20190130-27460-7ivt75/cookbooks/windows_security_baselines/recipes/security_baseline_policies.rb:15:in`from\_file'  
# /home/aish/.chefdk/gem/ruby/2.5.0/gems/chef-14.10.9/lib/chef/mixin/from\_file.rb:34:in `instance_eval' # /home/aish/.chefdk/gem/ruby/2.5.0/gems/chef-14.10.9/lib/chef/mixin/from_file.rb:34:in`from\_file'  
# /home/aish/.chefdk/gem/ruby/2.5.0/gems/chef-14.10.9/lib/chef/cookbook\_version.rb:199:in `load_recipe' # /home/aish/.chefdk/gem/ruby/2.5.0/gems/chef-14.10.9/lib/chef/run_context.rb:350:in`load\_recipe'  
# /home/aish/.chefdk/gem/ruby/2.5.0/gems/chef-14.10.9/lib/chef/run\_context/cookbook\_compiler.rb:166:in `block in compile_recipes' # /home/aish/.chefdk/gem/ruby/2.5.0/gems/chef-14.10.9/lib/chef/run_context/cookbook_compiler.rb:163:in`each'  
# /home/aish/.chefdk/gem/ruby/2.5.0/gems/chef-14.10.9/lib/chef/run\_context/cookbook\_compiler.rb:163:in `compile_recipes' # /home/aish/.chefdk/gem/ruby/2.5.0/gems/chefspec-7.3.4/lib/chefspec/extensions/chef/run_context/cookbook_compiler.rb:62:in`compile\_recipes'  
# /home/aish/.chefdk/gem/ruby/2.5.0/gems/chef-14.10.9/lib/chef/run\_context/cookbook\_compiler.rb:79:in `compile' # /home/aish/.chefdk/gem/ruby/2.5.0/gems/chef-14.10.9/lib/chef/run_context.rb:199:in`load'  
# /home/aish/.chefdk/gem/ruby/2.5.0/gems/chef-14.10.9/lib/chef/policy\_builder/expand\_node\_object.rb:97:in `setup_run_context' # /home/aish/.chefdk/gem/ruby/2.5.0/gems/chef-14.10.9/lib/chef/client.rb:515:in`setup\_run\_context'  
# /home/aish/.chefdk/gem/ruby/2.5.0/gems/chefspec-7.3.4/lib/chefspec/solo\_runner.rb:113:in `converge' # ./cookbooks/windows_security_baselines/spec/unit/recipes/security_baseline_policies_spec.rb:17:in`block (4 levels) in \<top (required)\>'  
# ./cookbooks/windows\_security\_baselines/spec/unit/recipes/security\_baseline\_policies\_spec.rb:21:in `block (5 levels) in <top (required)>' # /home/aish/.chefdk/gem/ruby/2.5.0/gems/chefspec-7.3.4/lib/chefspec/expect_exception.rb:15:in`matches?'  
# ./cookbooks/windows\_security\_baselines/spec/unit/recipes/security\_baseline\_policies\_spec.rb:21:in `block (4 levels) in <top (required)>' # /home/aish/.chefdk/gem/ruby/2.5.0/gems/chefspec-7.3.4/lib/chefspec/api/core.rb:18:in`block in module:Core'