Ensure that a specific provider is selected during an rspec test

package_spec.rb

# If your test depends on a specific provider being used, or a provider which has
# a specific attribute, such as versionable, the provider will fail the selection
# round if its commands aren't present on the system that the test is running on.
# For example, if running your rspec tests on your OS X development machine,
# and your manifests include :
#   package { 'java':
#     ensure => '1.7.0+update67'
#   }
#
# The test will fail with the error:
#   Parameter ensure failed on Package[oracle-j2sdk1.7]: Provider must have features 'versionable' to set 'ensure' to '1.7.0+update67'
#
# Use rspec-mocks to stub out the suitability check of the provider:
# https://github.com/puppetlabs/puppet/blob/master/lib/puppet/confiner.rb#L43
#
it {
  allow(Puppet::Type.type(:package).provider(:apt)).to receive(:suitable?) { true }
  is_expected.to compile.with_all_deps
}