(FACT-3207) Don't rescue NoMethodError in base resolver

lib/facter/resolvers/augeas.rb

@@ -17,6 +17,9 @@ def read_augeas_version(fact_name)
           @fact_list[:augeas_version] ||= read_augeas_from_gem
 
           @fact_list[fact_name]
+        rescue LoadError => e
+          log.debug("Resolving fact #{fact_name}, but got #{e} at #{e.backtrace[0]}")
+          @fact_list[:augeas_version] = nil
         end
 
         def read_augeas_from_cli

lib/facter/resolvers/base_resolver.rb

@@ -27,11 +27,8 @@ def self.resolve(fact_name, options = {})
 
           cache_nil_for_unresolved_facts(fact_name)
         end
-      rescue NoMethodError => e
-        log.debug("Could not resolve #{fact_name}, got #{e} at #{e.backtrace[0]}")
-        @fact_list[fact_name] = nil
       rescue LoadError, NameError => e
-        log.debug("Resolving fact #{fact_name}, but got #{e} at #{e.backtrace[0]}")
+        log.error("Resolving fact #{fact_name}, but got #{e} at #{e.backtrace[0]}")
         @fact_list[fact_name] = nil
       end
 

lib/facter/resolvers/dmi.rb

@@ -36,7 +36,7 @@ def read_facts(fact_name)
             return unless File.directory?('/sys/class/dmi')
 
             file_content = Facter::Util::FileHelper.safe_read("/sys/class/dmi/id/#{fact_name}", nil)
-                                                   .encode('UTF-8', invalid: :replace)
+            file_content = file_content.encode('UTF-8', invalid: :replace) if file_content
             if files.include?(fact_name.to_s) && file_content
               file_content = file_content.strip
               @fact_list[fact_name] = file_content unless file_content.empty?

lib/facter/resolvers/solaris/mountpoints.rb

@@ -25,7 +25,7 @@ def read_mounts(fact_name) # rubocop:disable Metrics/MethodLength
             @mounts = []
             @auto_home_paths = []
 
-            Facter::Util::Resolvers::FilesystemHelper.read_mountpoints.each do |fs|
+            Facter::Util::Resolvers::FilesystemHelper.read_mountpoints&.each do |fs|
               if fs.name == 'auto_home'
                 @auto_home_paths << fs.mount_point
                 next

lib/facter/resolvers/windows/timezone.rb

@@ -22,7 +22,7 @@ def determine_timezone
 
           def codepage
             result = codepage_from_api
-            result.empty? ? codepage_from_registry : result
+            result&.empty? ? codepage_from_registry : result
           end
 
           def codepage_from_registry

lib/facter/util/resolvers/filesystem_helper.rb

@@ -33,7 +33,7 @@ def compute_capacity(used, total)
           private
 
           def force_utf(mounts)
-            mounts.each do |mount|
+            mounts&.each do |mount|
               mount.name.force_encoding('UTF-8')
               mount.mount_type.force_encoding('UTF-8')
               mount.mount_point.force_encoding('UTF-8')

spec/facter/resolvers/augeas_spec.rb

@@ -77,7 +77,7 @@
         allow(Facter::Resolvers::Augeas).to receive(:require).with('augeas').and_raise(exception)
       end
 
-      it 'raises a LoadError error' do
+      it 'rescues LoadError error and logs at debug level' do
         augeas.resolve(:augeas_version)
 
         expect(log_spy).to have_received(:debug).with(/Resolving fact augeas_version, but got load_error_message/)

spec/facter/resolvers/base_resolver_spec.rb

@@ -77,13 +77,13 @@ def self.post_resolve(fact_name, _options)
     context 'when Load Error is raised' do
       before do
         allow(resolver).to receive(:post_resolve).and_raise(LoadError)
-        allow(Facter::Log).to receive(:new).with(resolver).and_return(instance_double(Facter::Log, debug: nil))
+        allow(Facter::Log).to receive(:new).with(resolver).and_return(instance_double(Facter::Log, error: nil))
       end
 
-      it 'logs the Load Error exception' do
+      it 'logs the Load Error exception at the error level' do
         resolver.resolve(fact)
 
-        expect(resolver.log).to have_received(:debug).with(/Resolving fact #{fact}, but got LoadError/)
+        expect(resolver.log).to have_received(:error).with(/Resolving fact #{fact}, but got LoadError/)
       end
 
       it 'sets the fact to nil' do