1 files changed, 68 insertions, 0 deletions
diff --git a/spec/migrations/migrate_stage_id_reference_in_background_spec.rb b/spec/migrations/migrate_stage_id_reference_in_background_spec.rb
new file mode 100644
index 00000000000..a32a7fceb68
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+++ b/spec/migrations/migrate_stage_id_reference_in_background_spec.rb
@@ -0,0 +1,68 @@
+require 'spec_helper'
+require Rails.root.join('db', 'post_migrate', '20170628080858_migrate_stage_id_reference_in_background')
+
+describe MigrateStageIdReferenceInBackground, :migration, :sidekiq do
+  matcher :be_scheduled_migration do |delay, *expected|
+    match do |migration|
+      BackgroundMigrationWorker.jobs.any? do |job|
+        job['args'] == [migration, expected] &&
+          job['at'].to_i == (delay.to_i + Time.now.to_i)
+      end
+    end
+
+    failure_message do |migration|
+      "Migration `#{migration}` with args `#{expected.inspect}` not scheduled!"
+    end
+  end
+
+  let(:jobs) { table(:ci_builds) }
+  let(:stages) { table(:ci_stages) }
+  let(:pipelines) { table(:ci_pipelines) }
+  let(:projects) { table(:projects) }
+
+  before do
+    stub_const('MigrateStageIdReferenceInBackground::BATCH_SIZE', 2)
+
+    projects.create!(id: 123, name: 'gitlab1', path: 'gitlab1')
+    projects.create!(id: 345, name: 'gitlab2', path: 'gitlab2')
+
+    pipelines.create!(id: 1, project_id: 123, ref: 'master', sha: 'adf43c3a')
+    pipelines.create!(id: 2, project_id: 345, ref: 'feature', sha: 'cdf43c3c')
+
+    jobs.create!(id: 1, commit_id: 1, project_id: 123, stage_idx: 2, stage: 'build')
+    jobs.create!(id: 2, commit_id: 1, project_id: 123, stage_idx: 2, stage: 'build')
+    jobs.create!(id: 3, commit_id: 1, project_id: 123, stage_idx: 1, stage: 'test')
+    jobs.create!(id: 4, commit_id: 1, project_id: 123, stage_idx: 3, stage: 'deploy')
+    jobs.create!(id: 5, commit_id: 2, project_id: 345, stage_idx: 1, stage: 'test')
+
+    stages.create(id: 101, pipeline_id: 1, project_id: 123, name: 'test')
+    stages.create(id: 102, pipeline_id: 1, project_id: 123, name: 'build')
+    stages.create(id: 103, pipeline_id: 1, project_id: 123, name: 'deploy')
+
+    jobs.create!(id: 6, commit_id: 2, project_id: 345, stage_id: 101, stage_idx: 1, stage: 'test')
+  end
+
+  it 'correctly schedules background migrations' do
+    Sidekiq::Testing.fake! do
+      Timecop.freeze do
+        migrate!
+
+        expect(described_class::MIGRATION).to be_scheduled_migration(2.minutes, 1)
+        expect(described_class::MIGRATION).to be_scheduled_migration(2.minutes, 2)
+        expect(described_class::MIGRATION).to be_scheduled_migration(4.minutes, 3)
+        expect(described_class::MIGRATION).to be_scheduled_migration(4.minutes, 4)
+        expect(BackgroundMigrationWorker.jobs.size).to eq 5
+      end
+    end
+  end
+
+  it 'schedules background migrations' do
+    Sidekiq::Testing.inline! do
+      expect(jobs.where(stage_id: nil).count).to eq 5
+
+      migrate!
+
+      expect(jobs.where(stage_id: nil).count).to eq 1
+    end
+  end
+end