2 files changed, 85 insertions, 1 deletions
diff --git a/spec/serializers/container_repositories_serializer_spec.rb b/spec/serializers/container_repositories_serializer_spec.rb
new file mode 100644
index 00000000000..382778389b3
--- /dev/null
+++ b/spec/serializers/container_repositories_serializer_spec.rb
@@ -0,0 +1,84 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe ContainerRepositoriesSerializer do
+  let(:user) { create(:user) }
+  let(:project) { create(:project) }
+  let(:resource) { create(:container_repository, name: 'image', project: project) }
+  let(:params) { { current_user: user, project: project } }
+
+  before do
+    project.add_developer(user)
+
+    stub_container_registry_config(enabled: true)
+    stub_container_registry_tags(repository: /image/, tags: %w(rootA latest))
+  end
+
+  describe '#represent' do
+    subject do
+      described_class.new(params).represent(resource)
+    end
+
+    it 'has basic attributes' do
+      expect(subject).to include(:id, :name, :path, :location, :created_at, :tags_path, :destroy_path)
+    end
+  end
+
+  describe '#represent_read_only' do
+    subject do
+      described_class.new(current_user: user, project: project).represent_read_only(resource)
+    end
+
+    it 'does not include destroy_path' do
+      expect(subject).to include(:id, :name, :path, :location, :created_at, :tags_path)
+      expect(subject).not_to include(:destroy_path)
+    end
+  end
+
+  describe '#with_pagination' do
+    let(:request) do
+      double(
+        url: "#{Gitlab.config.gitlab.url}:8080/#{project.namespace_id}/#{project.id}/container_registry?#{query.to_query}",
+        query_parameters: query
+      )
+    end
+
+    let(:response) { spy('response') }
+    let(:resource) { ContainerRepository.all }
+    let(:query) { { page: 1, per_page: 2 } }
+
+    let(:serializer) do
+      described_class
+        .new(current_user: user, project: project)
+        .with_pagination(request, response)
+    end
+
+    subject do
+      serializer.represent(resource)
+    end
+
+    it 'creates a paginated serializer' do
+      expect(serializer).to be_paginated
+    end
+
+    context 'when multiple ContainerRepository objects are serialized' do
+      before do
+        create_list(:container_repository, 5, project: project)
+      end
+
+      it 'serializes appropriate number of objects' do
+        expect(subject.count).to be 2
+      end
+
+      it 'appends relevant headers' do
+        expect(response).to include_pagination_headers
+        expect(response).to receive(:[]=).with('X-Total', '5')
+        expect(response).to receive(:[]=).with('X-Total-Pages', '3')
+        expect(response).to receive(:[]=).with('X-Per-Page', '2')
+
+        subject
+      end
+    end
+  end
+end
diff --git a/spec/serializers/diff_file_entity_spec.rb b/spec/serializers/diff_file_entity_spec.rb
index 65b62f8aa16..3e341a58a15 100644
--- a/spec/serializers/diff_file_entity_spec.rb
+++ b/spec/serializers/diff_file_entity_spec.rb
@@ -49,7 +49,7 @@ describe DiffFileEntity do
     end
   end
 
-  context '#parallel_diff_lines' do
+  describe '#parallel_diff_lines' do
     let(:options) { { diff_view: :parallel } }
 
     it 'exposes parallel diff lines correctly' do