Add specs for pipeline builder repository validator

spec/lib/gitlab/ci/pipeline/chain/validate/repository_spec.rb

+require 'spec_helper'
+
+describe Gitlab::Ci::Pipeline::Chain::Validate::Repository do
+  set(:project) { create(:project, :repository) }
+  set(:user) { create(:user) }
+
+  let(:command) do
+    double('command', project: project, current_user: user)
+  end
+
+  let!(:step) { described_class.new(pipeline, command) }
+
+  before do
+    step.perform!
+  end
+
+  context 'when pipeline ref and sha exists' do
+    let(:pipeline) do
+      build_stubbed(:ci_pipeline, ref: 'master', sha: '123', project: project)
+    end
+
+    it 'does not break the chain' do
+      expect(step.break?).to be false
+    end
+
+    it 'does not append pipeline errors' do
+      expect(pipeline.errors).to be_empty
+    end
+  end
+
+  context 'when pipeline ref does not exist' do
+    let(:pipeline) do
+      build_stubbed(:ci_pipeline, ref: 'something', project: project)
+    end
+
+    it 'breaks the chain' do
+      expect(step.break?).to be true
+    end
+
+    it 'adds an error about missing ref' do
+      expect(pipeline.errors.to_a)
+        .to include 'Reference not found'
+    end
+  end
+
+  context 'when pipeline does not have SHA set' do
+    let(:pipeline) do
+      build_stubbed(:ci_pipeline, ref: 'master', sha: nil, project: project)
+    end
+
+    it 'breaks the chain' do
+      expect(step.break?).to be true
+    end
+
+    it 'adds an error about missing SHA' do
+      expect(pipeline.errors.to_a)
+        .to include 'Commit not found'
+    end
+  end
+end