Merge pull request #439 from jonnangle/add_be_immutable

Add be_immutable matcher on file type

lib/serverspec/type/file.rb

@@ -73,6 +73,10 @@ def mounted?(attr, only_with)
         backend.check_mounted(@name, attr, only_with)
       end
 
+      def immutable?
+        backend.check_immutable(@name)
+      end
+
       def match_checksum(checksum)
         backend.check_file_checksum(@name, checksum)
       end

spec/redhat/file_spec.rb

@@ -265,6 +265,11 @@
   it { should_not be_mounted }
 end
 
+describe file('/etc/immutable-file') do
+  it { should be_immutable }
+  its(:command) { should eq "lsattr -d /etc/immutable-file 2>&1 | awk '$1~/^-*i-*$/ {exit 0} {exit 1}'" }
+end
+
 describe file('/') do
   let(:stdout) { "/dev/mapper/VolGroup-lv_root on / type ext4 (rw,mode=620)\r\n" }
   it { should be_mounted.with( :type => 'ext4' ) }