FIX: Support unicode replacements with multiple codepoints

spec/models/emoji_spec.rb

@@ -0,0 +1,18 @@
+require 'rails_helper'
+
+describe Emoji do
+
+  it "returns the correct codepoints" do
+    expect(Emoji.replacement_code('1f47d').codepoints).to eq([128125])
+  end
+
+  it "handles multiple codepoints" do
+    expect(Emoji.replacement_code('1f1e9-1f1ea').codepoints).to eq([127465, 127466])
+  end
+
+  it "returns nil for weird cases" do
+    expect(Emoji.replacement_code('32')).to be_nil
+    expect(Emoji.replacement_code('robin')).to be_nil
+  end
+
+end