Using "cmp" Against File Mode Fails

[xiGUAwanOU]

Description

I'm writing an inspec description for a file downloaded by s3_file cookbook, to test its mode is correct.

The mode of the downloaded file is set to 0660, which is ensured manually with ls -l in the virtual machine. And my inspec description is like this:

describe file('/tmp/exampleapi.tar.gz') do
  it { should exist }
  its('owner') { should eq 'vagrant' }
  its('group') { should eq 'vagrant' }
  its('mode') { should cmp '0660' }
end

This example fails on one of the build servers (we have two of them), and I've also tried to manually execute kitchen converge and kitchen verify, it still fails.

The failures have following error message:

Failures:

  1) File /tmp/exampleapi.tar.gz mode should cmp "0660"
     Failure/Error: DEFAULT_FAILURE_NOTIFIER = lambda { |failur, _opts| raise failure }

       expected: 0660
            got: 0660

       (compared using `cmp` matcher)

However, if I use should eq 0660, there is no problem any more.

InSpec and Platform Version

Test Kitchen version: 1.7.3

I have no idea about how to get the version of InSpec. I'm using .kitchen.yml and specified the verifier as inspec.

The build server is a Mac mini Server (Late 2012), with OS X El Capitan, Version 10.11.5

[arlimus]

Thank you for reporting @xiGUAwanOU

I tried to recreate this issue:

vagrant-arch.vagrantup.com:..ec ±> touch test
vagrant-arch.vagrantup.com:..ec ±> chmod 0660 test
vagrant-arch.vagrantup.com:..ec ±> cat > test.rb
describe file('test') do
  it { should exist }
  its('mode') { should cmp '0660' }
end

vagrant-arch.vagrantup.com:..ec ±> inspec exec test.rb

Target:  local://


  File test
     ✔  should exist
     ✔  mode should cmp "0660"

Test Summary: 2 successful, 0 failures, 0 skipped

Is it possible to share the complete example (tiny chef snippet + inspec snippet)?

To help with the version of kitchen-inspec and inspec: Are you using bundler? In that case please run:

bundle list

in the folder of your Gemfile. Otherwise please:

> inspec version
1.0.0
> kitchen version
Test Kitchen version 1.13.2

[xiGUAwanOU]

I have updated the Chef DK version on the build machine, and this problem doesn't exist anymore. So this could be an already fixed problem.

Since the older Chef DK version has been deleted, it is a little bit tricky to get the InSpec version.

I've found the InSpec version number in the Gemfile.lock from ChefDK 0.13.21, since the Test Kitchen version (1.7.3) provided by this ChefDK matches the number I've mentioned before. So the version number of InSpec should be 0.18.0.

The snippet caused the problem:

s3_file local_path do
  bucket 'dummy_bucket'
  remote_path 'dummy_file'
  aws_access_key_id 'dummy_key'
  aws_secret_access_key 'dummy_secret'
  owner 'vagrant'
  group 'vagrant'
  mode '0660'
  s3_url 'dummy_url'
  action :create
end

[vjeffrey]

@xiGUAwanOU some further testing on our end seems to be confirming that the cmp problem is fixed. If I'm understanding correctly, this is no longer a problem for you as well, right? ("I have updated the Chef DK version on the build machine, and this problem doesn't exist anymore") Please confirm so we can close the issue if that is the case. Thank you :)

[vjeffrey]

Closing out the issue for now. Please re-open if this is still an issue!! Thank you :)