DEV: Add failing test for pull-hotlinked codeblocks (#23682)

If a codeblock contains **exactly** the same markdown as an image which has been retrieved by the 'pull hotlinked' job, then it will be replaced with the new URL. This commit adds failing (skipped) tests for this issue.

spec/jobs/pull_hotlinked_images_spec.rb

@@ -183,6 +183,23 @@ RSpec.describe Jobs::PullHotlinkedImages do
       expect(post.reload.raw).to eq("[Images](#{url})\n![](#{Upload.last.short_url})")
     end
 
+    it "does not replace images in code blocks", skip: "Known issue" do
+      post = Fabricate(:post, raw: <<~RAW)
+        ![realimage](#{image_url})
+        `![codeblockimage](#{image_url})`
+      RAW
+      stub_image_size
+
+      expect do Jobs::PullHotlinkedImages.new.execute(post_id: post.id) end.to change {
+        Upload.count
+      }.by(1)
+
+      expect(post.reload.raw).to eq(<<~RAW)
+        ![realimage](#{Upload.last.short_url})
+        `![codeblockimage](#{image_url})`
+      RAW
+    end
+
     it "replaces images without protocol" do
       url = image_url.sub(/^https?\:/, "")
       post = Fabricate(:post, raw: "<img alt='test' src='#{url}'>")

spec/services/inline_uploads_spec.rb

@@ -385,6 +385,18 @@ RSpec.describe InlineUploads do
         MD
       end
 
+      it "should not replace identical markdown in code blocks", skip: "Known issue" do
+        md = <<~MD
+        `![image|690x290](#{upload.url})`
+        ![image|690x290](#{upload.url})
+        MD
+
+        expect(InlineUploads.process(md)).to eq(<<~MD)
+        `![image|690x290](#{upload.url})`
+        ![image|690x290](#{upload.short_url})
+        MD
+      end
+
       it "should not be affected by an emoji" do
         CustomEmoji.create!(name: "test", upload: upload3)
         Emoji.clear_cache