1 files changed, 18 insertions, 0 deletions
diff --git a/spec/lib/gitlab/string_regex_marker_spec.rb b/spec/lib/gitlab/string_regex_marker_spec.rb
new file mode 100644
index 00000000000..2f5cf6c6e3b
--- /dev/null
+++ b/spec/lib/gitlab/string_regex_marker_spec.rb
@@ -0,0 +1,18 @@
+require 'spec_helper'
+
+describe Gitlab::StringRegexMarker, lib: true do
+  describe '#mark' do
+    let(:raw)  { %{"name": "AFNetworking"} }
+    let(:rich) { %{<span class="key">"name"</span><span class="punctuation">: </span><span class="value">"AFNetworking"</span>}.html_safe }
+    subject do
+      described_class.new(raw, rich).mark(/"[^"]+":\s*"(?<name>[^"]+)"/, group: :name) do |text, left:, right:|
+        %{<a href="#">#{text}</a>}
+      end
+    end
+
+    it 'marks the inline diffs' do
+      expect(subject).to eq(%{<span class="key">"name"</span><span class="punctuation">: </span><span class="value">"<a href="#">AFNetworking</a>"</span>})
+      expect(subject).to be_html_safe
+    end
+  end
+end