(maint) Add support for *BSD os.family

lib/facts/bsd/os/family.rb

@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+module Facts
+  module Bsd
+    module Os
+      class Family
+        FACT_NAME = 'os.family'
+        ALIASES = 'osfamily'
+
+        def call_the_resolver
+          fact_value = Facter::Resolvers::Uname.resolve(:kernelname)
+
+          [Facter::ResolvedFact.new(FACT_NAME, fact_value), Facter::ResolvedFact.new(ALIASES, fact_value, :legacy)]
+        end
+      end
+    end
+  end
+end

spec/facter/facts/bsd/os/family_spec.rb

@@ -0,0 +1,24 @@
+# frozen_string_literal: true
+
+describe Facts::Bsd::Os::Family do
+  describe '#call_the_resolver' do
+    subject(:fact) { Facts::Bsd::Os::Family.new }
+
+    let(:value) { 'FreeBSD' }
+
+    before do
+      allow(Facter::Resolvers::Uname).to receive(:resolve).with(:kernelname).and_return(value)
+    end
+
+    it 'calls Facter::Resolvers::Uname' do
+      fact.call_the_resolver
+      expect(Facter::Resolvers::Uname).to have_received(:resolve).with(:kernelname)
+    end
+
+    it 'returns os family fact' do
+      expect(fact.call_the_resolver).to be_an_instance_of(Array).and \
+        contain_exactly(an_object_having_attributes(name: 'os.family', value: value),
+                        an_object_having_attributes(name: 'osfamily', value: value, type: :legacy))
+    end
+  end
+end