Ensure that built-up codepoints are written in encoding traversal

lib/rumoji.rb

@@ -26,14 +26,12 @@ module Rumoji
       sequence =  if possible_emoji.empty?
                     # If this codepoint is not part of an emoji
                     # just write it back out, along with any previously stored codepoints.
-                    sequence_from_codepoints(previous_codepoints, codepoint).tap do
-                      previous_codepoints.clear
-                    end
+                    dump_codepoints_to_string(previous_codepoints << codepoint)
                   elsif !possible_emoji.any?(&:multiple?)
                     # If this codepoint is part of an emoji, but not one
                     # that contains multiple codepoints, write out the
-                    # first possiblity's cheat code.
-                    possible_emoji.first.code
+                    # first possiblity's cheat code and the previously stored codepoints
+                    dump_codepoints_to_string(previous_codepoints) << possible_emoji.first.code
                   else
                     # This codepoint is a part of an emoji with multiple
                     # codepoints, so push it onto the stack.
@@ -51,7 +49,7 @@ module Rumoji
     end
 
     # Write any remaining codepoints.
-    writeable.write sequence_from_codepoints(previous_codepoints) if previous_codepoints.any?
+    writeable.write dump_codepoints_to_string(previous_codepoints) if previous_codepoints.any?
 
     writeable
   end
@@ -65,9 +63,10 @@ module Rumoji
 
 private
 
-  def sequence_from_codepoints(*codepoints)
-    compacted = codepoints.flatten.compact
-    compacted.pack("U*")
+  def dump_codepoints_to_string(codepoints)
+    codepoints.pack("U*").tap do
+      codepoints.clear
+    end
   end
 
 end

lib/rumoji/emoji/people.rb

@@ -94,7 +94,7 @@ module Rumoji
       self.new("\u{1F3B5}", [:musical_note]), # "music, being in good mood"
       self.new("\u{1F525}", [:fire], "FIRE"),
       # Poop
-      self.new("\u{1F4A9}", [:hankey, :poop, :shit], "PILE OF POO"), # "dog dirt"
+      self.new("\u{1F4A9}", [:poop, :hankey, :shit], "PILE OF POO"), # "dog dirt"
       self.new("\u{1F44D}", [:thumbsup, :"+1"], "THUMBS UP SIGN"),
       self.new("\u{1F44E}", [:thumbsdown, :"-1"], "THUMBS DOWN SIGN"),
       self.new("\u{1F44C}", [:ok_hand], "OK HAND SIGN"),

spec/rumoji_spec.rb

@@ -16,6 +16,7 @@ describe Rumoji do
     it "transforms emoji into cheat-sheet form" do
       key = :smile
       Rumoji.encode(@smile).must_equal ":smile:"
+      Rumoji.encode("#{@smile}").must_equal ":smile:"
     end
   end
 
@@ -38,7 +39,6 @@ describe Rumoji do
     it "keeps codepoints that match the beginnings of multi-codepoint emoji" do
       text = "i like #hashtags and 1direction they are the #1 band. end with 9"
       io   = StringIO.new(text)
-
       Rumoji.encode_io(io).string.must_equal text
     end
 
@@ -68,6 +68,13 @@ describe Rumoji do
           Rumoji.encode_io(io).string.must_equal "An example of a multipoint emoji is the :us: flag."
         end
       end
+
+      describe "with trailing emoji" do
+        it "writes characters that are in a multipoint emoji followed by an emoji" do
+          io = StringIO.new "I would like 0#{@poop}"
+          Rumoji.encode_io(io).string.must_equal "I would like 0:poop:"
+        end
+      end
     end
 
   end