FEATURE: Add quote-modified class if a quote has been modified

spec/components/cooked_post_processor_spec.rb

@@ -778,4 +778,38 @@ describe CookedPostProcessor do
 
   end
 
+  context "quote processing" do
+    let(:cpp) { CookedPostProcessor.new(cp) }
+    let(:pp) { Fabricate(:post, raw: "This post is ripe for quoting!") }
+
+    context "with an unmodified quote" do
+      let(:cp) do
+        Fabricate(
+          :post,
+          raw: "[quote=\"#{pp.user.username}, post: #{pp.post_number}, topic:#{pp.topic_id}]\nripe for quoting\n[/quote]\ntest"
+        )
+      end
+
+      it "should not be marked as modified" do
+        cpp.post_process_quotes
+        expect(cpp.doc.css('aside.quote.quote-modified')).to be_blank
+      end
+    end
+
+    context "with a modified quote" do
+      let(:cp) do
+        Fabricate(
+          :post,
+          raw: "[quote=\"#{pp.user.username}, post: #{pp.post_number}, topic:#{pp.topic_id}]\nmodified\n[/quote]\ntest"
+        )
+      end
+
+      it "should be marked as modified" do
+        cpp.post_process_quotes
+        expect(cpp.doc.css('aside.quote.quote-modified')).to be_present
+      end
+    end
+
+  end
+
 end

spec/components/quote_comparer_spec.rb

@@ -0,0 +1,41 @@
+require 'rails_helper'
+require 'quote_comparer'
+
+describe QuoteComparer do
+
+  describe "#modified?" do
+    let(:post) { Fabricate(:post, raw: "This has **text** we _are_ matching") }
+
+    def qc(text)
+      QuoteComparer.new(post.topic_id, post.post_number, text)
+    end
+
+    it "returns true for no post" do
+      expect(QuoteComparer.new(nil, nil, "test")).to be_modified
+    end
+
+    it "returns true for nil text" do
+      expect(qc(nil)).to be_modified
+    end
+
+    it "returns true for empty text" do
+      expect(qc("")).to be_modified
+    end
+
+    it "returns true for modified text" do
+      expect(qc("text is modified")).to be_modified
+    end
+
+    it "return false when the text matches exactly" do
+      expect(qc("This has text we are matching")).not_to be_modified
+    end
+
+    it "return false when there's a substring" do
+      expect(qc("text we are")).not_to be_modified
+    end
+
+    it "return false when there's extra space" do
+      expect(qc("\n\ntext   we are \t")).not_to be_modified
+    end
+  end
+end