Add specs for CI builds and pipeline relationships

spec/models/ci/build_spec.rb

@@ -25,6 +25,13 @@ describe Ci::Build do
 
   it { is_expected.to be_a(ArtifactMigratable) }
 
+  describe 'associations' do
+    it 'has a bidirectional relationship with projects' do
+      expect(described_class.reflect_on_association(:project).has_inverse?).to eq(:builds)
+      expect(Project.reflect_on_association(:builds).has_inverse?).to eq(:project)
+    end
+  end
+
   describe 'callbacks' do
     context 'when running after_create callback' do
       it 'triggers asynchronous build hooks worker' do

spec/models/ci/pipeline_spec.rb

@@ -28,6 +28,13 @@ describe Ci::Pipeline, :mailer do
   it { is_expected.to respond_to :short_sha }
   it { is_expected.to delegate_method(:full_path).to(:project).with_prefix }
 
+  describe 'associations' do
+    it 'has a bidirectional relationship with projects' do
+      expect(described_class.reflect_on_association(:project).has_inverse?).to eq(:pipelines)
+      expect(Project.reflect_on_association(:pipelines).has_inverse?).to eq(:project)
+    end
+  end
+
   describe '#source' do
     context 'when creating new pipeline' do
       let(:pipeline) do