Add example for both input_format and format given

spec/converter_spec.rb

@@ -66,7 +66,7 @@
     end
 
     context 'when format is given' do
-      it 'must ignore file extension and convert it to given format' do
+      it 'must ignore file extension and convert it to the given format' do
         Tempfile.create(tempfile) do |output_file|
           subject.convert_file(masscan_path, output_file, format: :csv)
           output_file.rewind
@@ -75,6 +75,17 @@
         end
       end
     end
+
+    context 'when input_format and format are given' do
+      it 'must set input file format explicitly and convert it to the given format' do
+        Tempfile.create(tempfile) do |output_file|
+          subject.convert_file(masscan_path, output_file, input_format: :json, format: :csv)
+          output_file.rewind
+
+          expect(output_file.read).to eq(expected_csv)
+        end
+      end
+    end
   end
 
   describe '.convert' do

spec/fixtures/converter/input.csv

@@ -0,0 +1,3 @@
+type,status.status,status.protocol,status.port,status.reason,status.ttl,status.ip,status.timestamp,banner.protocol,banner.port,banner.ip,banner.timestamp,banner.app_protocol,banner.payload
+status,open,tcp,80,"syn,ack",54,93.184.216.34,2021-08-26 08:50:21 +0200
+banner,,,,,,,,tcp,80,93.184.216.34,2021-08-26 08:50:21 +0200,html_title,404 - Not Found