Add the method ExternalIssue#project_id

This method returns the project's ID, making ExternalIssue slightly more
compatible with Issue (which also defines the "project_id" method).

1 files changed, 7 insertions, 1 deletions

diff --git a/spec/models/external_issue_spec.rb b/spec/models/external_issue_spec.rb
index ebba6e14578..2debe1289a3 100644
--- a/spec/models/external_issue_spec.rb
+++ b/spec/models/external_issue_spec.rb
@@ -1,7 +1,7 @@
 require 'spec_helper'
 
 describe ExternalIssue, models: true do
-  let(:project) { double('project', to_reference: 'namespace1/project1') }
+  let(:project) { double('project', id: 1, to_reference: 'namespace1/project1') }
   let(:issue)   { described_class.new('EXT-1234', project) }
 
   describe 'modules' do
@@ -36,4 +36,10 @@ describe ExternalIssue, models: true do
       end
     end
   end
+
+  describe '#project_id' do
+    it 'returns the ID of the project' do
+      expect(issue.project_id).to eq(project.id)
+    end
+  end
 end