Add tests demonstrating expected behavior for :from_facts and :to_facts

Author: kpaulisse

spec/octocatalog-diff/tests/cli/options/fact_file_spec.rb

@@ -50,6 +50,19 @@
   end
 
   describe '#opt_to_fact_file' do
+    let(:fact_file) { OctocatalogDiff::Spec.fixture_path('facts/facts.yaml') }
+    let(:fact_answer) do
+      {
+        'name' => 'rspec-node.xyz.github.net',
+        'values' => {
+          'apt_update_last_success' => 1_458_162_123,
+          'architecture' => 'amd64',
+          'datacenter' => 'xyz',
+          'fqdn' => 'rspec-node.xyz.github.net'
+        }
+      }
+    end
+
     it 'should distinguish between the to-facts and from-facts' do
       fact_file_1 = OctocatalogDiff::Spec.fixture_path('facts/facts.yaml')
       fact_file_2 = OctocatalogDiff::Spec.fixture_path('facts/valid-facts.yaml')
@@ -73,5 +86,23 @@
 
       expect(result[:facts]).to eq(result[:to_facts])
     end
+
+    it 'should only define from-fact-file when only --from-fact-file is given' do
+      result = run_optparse(['--from-fact-file', fact_file])
+      expect(result[:from_facts].facts).to eq(fact_answer)
+      expect(result[:to_facts]).to be_nil
+    end
+
+    it 'should only define to-fact-file when only --to-fact-file is given' do
+      result = run_optparse(['--from-fact-file', fact_file])
+      expect(result[:from_facts]).to be_nil
+      expect(result[:to_facts].facts).to eq(fact_answer)
+    end
+
+    it 'should define both from and to fact file when --fact-file is given' do
+      result = run_optparse(['--fact-file', fact_file])
+      expect(result[:from_facts].facts).to eq(fact_answer)
+      expect(result[:to_facts].facts).to eq(fact_answer)
+    end
   end
 end