Add detailed statuses for external commit statuses

lib/gitlab/ci/status/external/common.rb

+module Gitlab
+  module Ci
+    module Status
+      module External
+        module Common
+          def has_details?
+            can?(user, :read_commit_status, subject) &&
+              subject.target_url.present?
+          end
+
+          def details_path
+            subject.target_url
+          end
+
+          def has_action?
+            false
+          end
+        end
+      end
+    end
+  end
+end

lib/gitlab/ci/status/external/factory.rb

+module Gitlab
+  module Ci
+    module Status
+      module External
+        class Factory < Status::Factory
+          def self.common_helpers
+            Status::External::Common
+          end
+        end
+      end
+    end
+  end
+end

spec/lib/gitlab/ci/status/external/common_spec.rb

+require 'spec_helper'
+
+describe Gitlab::Ci::Status::External::Common do
+  let(:user) { create(:user) }
+  let(:project) { external_status.project }
+  let(:external_target_url) { 'http://example.gitlab.com/status' }
+
+  let(:external_status) do
+    create(:generic_commit_status, target_url: external_target_url)
+  end
+
+  subject do
+    Gitlab::Ci::Status::Core
+      .new(external_status, user)
+      .extend(described_class)
+  end
+
+  describe '#has_action?' do
+    it { is_expected.not_to have_action }
+  end
+
+  describe '#has_details?' do
+    context 'when user has access to read commit status' do
+      before { project.team << [user, :developer] }
+
+      it { is_expected.to have_details }
+    end
+
+    context 'when user does not have access to read commit status' do
+      it { is_expected.not_to have_details }
+    end
+  end
+
+  describe '#details_path' do
+    it 'links to the external target URL' do
+      expect(subject.details_path).to eq external_target_url
+    end
+  end
+end

spec/lib/gitlab/ci/status/external/factory_spec.rb

+require 'spec_helper'
+
+describe Gitlab::Ci::Status::External::Factory do
+  let(:user) { create(:user) }
+  let(:project) { resource.project }
+  let(:status) { factory.fabricate! }
+  let(:factory) { described_class.new(resource, user) }
+  let(:external_url) { 'http://gitlab.com/status' }
+
+  before do
+    project.team << [user, :developer]
+  end
+
+  context 'when external status has a simple core status' do
+    HasStatus::AVAILABLE_STATUSES.each do |simple_status|
+      context "when core status is #{simple_status}" do
+        let(:resource) do
+          create(:generic_commit_status, status: simple_status,
+                                         target_url: external_url)
+        end
+
+        let(:expected_status) do
+          Gitlab::Ci::Status.const_get(simple_status.capitalize)
+        end
+
+        it "fabricates a core status #{simple_status}" do
+          expect(status).to be_a expected_status
+        end
+
+        it 'extends core status with common methods' do
+          expect(status).to have_details
+          expect(status).not_to have_action
+          expect(status.details_path).to eq external_url
+        end
+      end
+    end
+  end
+end