(MODULES-3590) Fix match_for_absence parameter

Prior to this commit, due to a bug in the exists? method in the
file_line provider, match_for_absence didn't work as described (or
at all really). Update the exists? logic so that match_for_absence
works as described.

Additionally add a unit test to prevent regressions and update the
documentation for the parameter to reflect the fact that it is
ignored when `ensure => present`.

1 files changed, 5 insertions, 1 deletions

diff --git a/lib/puppet/provider/file_line/ruby.rb b/lib/puppet/provider/file_line/ruby.rb
index aab6fe2..beeb430 100644
--- a/lib/puppet/provider/file_line/ruby.rb
+++ b/lib/puppet/provider/file_line/ruby.rb
@@ -4,7 +4,11 @@ Puppet::Type.type(:file_line).provide(:ruby) do
       true
     else
       lines.find do |line|
-        line.chomp == resource[:line].chomp
+        if resource[:ensure].to_s == 'absent' and resource[:match_for_absence].to_s == 'true'
+          line.chomp =~ Regexp.new(resource[:match])
+        else
+          line.chomp == resource[:line].chomp
+        end
       end
     end
   end