(FACT-2324) Add loadfacts api method

lib/facter.rb

@@ -168,6 +168,16 @@ def reset
       nil
     end
 
+    # Loads all facts
+    #
+    # @return [nil]
+    #
+    # @api public
+    def loadfacts
+      LegacyFacter.loadfacts
+      nil
+    end
+
     # Register directories to be searched for custom facts. The registered directories
     # must be absolute paths or they will be ignored.
     #

spec/facter/facter_spec.rb

@@ -306,6 +306,22 @@ def mock_collection(method, os_name = nil, error = nil)
     end
   end
 
+  describe '#loadfacts' do
+    it 'sends calls to LegacyFacter' do
+      allow(LegacyFacter).to receive(:loadfacts)
+
+      Facter.loadfacts
+
+      expect(LegacyFacter).to have_received(:loadfacts).once
+    end
+
+    it 'returns nil' do
+      allow(LegacyFacter).to receive(:loadfacts)
+
+      expect(Facter.loadfacts).to be_nil
+    end
+  end
+
   describe '#trace?' do
     it 'returns trace variable' do
       expect(Facter).not_to be_trace