(FACT-2832) Use puppet path for augeas fact

lib/facter/resolvers/augeas_resolver.rb

@@ -20,7 +20,13 @@ def read_augeas_version(fact_name)
         end
 
         def read_augeas_from_cli
-          output = Facter::Core::Execution.execute('augparse --version 2>&1', logger: log)
+          command = if File.readable?('/opt/puppetlabs/puppet/bin/augparse')
+                      '/opt/puppetlabs/puppet/bin/augparse'
+                    else
+                      'augparse'
+                    end
+
+          output = Facter::Core::Execution.execute("#{command} --version 2>&1", logger: log)
           Regexp.last_match(1) if output =~ /^augparse (\d+\.\d+\.\d+)/
         end
 

spec/facter/resolvers/augeas_resolver_spec.rb

@@ -4,9 +4,11 @@
   subject(:augeas) { Facter::Resolvers::Augeas }
 
   let(:log_spy) { instance_spy(Facter::Log) }
+  let(:executable?) { false }
 
   before do
     augeas.instance_variable_set(:@log, log_spy)
+    allow(File).to receive(:readable?).with('/opt/puppetlabs/puppet/bin/augparse').and_return(executable?)
   end
 
   after do
@@ -25,6 +27,20 @@
     end
   end
 
+  context 'when augparse is installed with puppet-agent package on unix based systems' do
+    let(:executable?) { true }
+
+    before do
+      allow(Facter::Core::Execution).to receive(:execute)
+        .with('/opt/puppetlabs/puppet/bin/augparse --version 2>&1', logger: log_spy)
+        .and_return('augparse 1.12.0 <http://augeas.net/>')
+    end
+
+    it 'returns build' do
+      expect(augeas.resolve(:augeas_version)).to eq('1.12.0')
+    end
+  end
+
   context 'when augparse is not installed' do
     before do
       allow(Facter::Core::Execution).to receive(:execute)