Create framework for build prerequisites

Introduces the concept of Prerequisites for a CI build.
If a build has unmet prerequisites it will go through the
:preparing state before being made available to a runner.

There are no actual prerequisites yet, so current
behaviour is unchanged.

1 files changed, 9 insertions, 0 deletions

diff --git a/spec/requests/api/runner_spec.rb b/spec/requests/api/runner_spec.rb
index 9087cccb759..3ccedd8dd06 100644
--- a/spec/requests/api/runner_spec.rb
+++ b/spec/requests/api/runner_spec.rb
@@ -918,6 +918,15 @@ describe API::Runner, :clean_gitlab_redis_shared_state do
 
           it { expect(job).to be_job_execution_timeout }
         end
+
+        context 'when failure_reason is unmet_prerequisites' do
+          before do
+            update_job(state: 'failed', failure_reason: 'unmet_prerequisites')
+            job.reload
+          end
+
+          it { expect(job).to be_unmet_prerequisites }
+        end
       end
 
       context 'when trace is given' do