File.stubs(:executable?) # Stub all other calls
Facter::Util::Resolution.stubs(:exec) # Catch all other calls
File.expects(:executable?).with('/usr/lib/update-notifier/apt-check').returns true
File.stubs(:executable?) # Stub all other calls
Facter::Util::Resolution.stubs(:exec) # Catch all other calls
File.expects(:executable?).with('/usr/lib/update-notifier/apt-check').returns true