refactor(VisualRecognitionV4): convert collection ids and features to comma separated string

Author: mamoonraja

lib/ibm_watson/visual_recognition_v4.rb

@@ -115,6 +115,9 @@ def analyze(collection_ids:, features:, images_file: nil, image_url: nil, thresh
 
       form_data = {}
 
+      collection_ids *= "," unless collection_ids.nil?
+      features *= "," unless features.nil?
+
       form_data[:collection_ids] = HTTP::FormData::Part.new(collection_ids.to_s, content_type: "text/plain")
 
       form_data[:features] = HTTP::FormData::Part.new(features.to_s, content_type: "text/plain")

test/integration/test_visual_recognition_v4.rb

@@ -43,8 +43,8 @@ def test_analyze
             "content_type": "image/jpeg"
           }
         ],
-        collection_ids: @collection_id,
-        features: "objects"
+        collection_ids: [@collection_id],
+        features: ["objects"]
       ).result
       assert_equal(2, result["images"].length)
       refute(result.nil?)

test/unit/test_visual_recognition_v4.rb

@@ -31,8 +31,8 @@ def test_analyze
           "content_type": "image/jpeg"
         }
       ],
-      collection_ids: "collid",
-      features: "animal"
+      collection_ids: ["collid"],
+      features: ["animal"]
     )
   end
 
@@ -53,8 +53,8 @@ def test_analyze_url
       image_url: [
         "www.somethingfunny.com"
       ],
-      collection_ids: "collid",
-      features: "animal"
+      collection_ids: ["collid"],
+      features: ["animal"]
     )
   end