1 files changed, 44 insertions, 0 deletions
diff --git a/spec/lib/gitlab/word_diff/chunk_collection_spec.rb b/spec/lib/gitlab/word_diff/chunk_collection_spec.rb
new file mode 100644
index 00000000000..aa837f760c1
--- /dev/null
+++ b/spec/lib/gitlab/word_diff/chunk_collection_spec.rb
@@ -0,0 +1,44 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Gitlab::WordDiff::ChunkCollection do
+  subject(:collection) { described_class.new }
+
+  describe '#add' do
+    it 'adds elements to the chunk collection' do
+      collection.add('Hello')
+      collection.add(' World')
+
+      expect(collection.content).to eq('Hello World')
+    end
+  end
+
+  describe '#content' do
+    subject { collection.content }
+
+    context 'when no elements in the collection' do
+      it { is_expected.to eq('') }
+    end
+
+    context 'when elements exist' do
+      before do
+        collection.add('Hi')
+        collection.add(' GitLab!')
+      end
+
+      it { is_expected.to eq('Hi GitLab!') }
+    end
+  end
+
+  describe '#reset' do
+    it 'clears the collection' do
+      collection.add('1')
+      collection.add('2')
+
+      collection.reset
+
+      expect(collection.content).to eq('')
+    end
+  end
+end