1 files changed, 49 insertions, 0 deletions
diff --git a/spec/lib/gitlab/background_migration/nullify_orphan_runner_id_on_ci_builds_spec.rb b/spec/lib/gitlab/background_migration/nullify_orphan_runner_id_on_ci_builds_spec.rb
new file mode 100644
index 00000000000..90dd3e14606
--- /dev/null
+++ b/spec/lib/gitlab/background_migration/nullify_orphan_runner_id_on_ci_builds_spec.rb
@@ -0,0 +1,49 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Gitlab::BackgroundMigration::NullifyOrphanRunnerIdOnCiBuilds, :migration, schema: 20220223112304 do
+  let(:namespaces) { table(:namespaces) }
+  let(:projects) { table(:projects) }
+  let(:ci_runners) { table(:ci_runners) }
+  let(:ci_pipelines) { table(:ci_pipelines) }
+  let(:ci_builds) { table(:ci_builds) }
+
+  subject { described_class.new }
+
+  let(:helpers) do
+    ActiveRecord::Migration.new.extend(Gitlab::Database::MigrationHelpers)
+  end
+
+  before do
+    helpers.remove_foreign_key_if_exists(:ci_builds, column: :runner_id)
+  end
+
+  after do
+    helpers.add_concurrent_foreign_key(:ci_builds, :ci_runners, column: :runner_id, on_delete: :nullify, validate: false)
+  end
+
+  describe '#perform' do
+    let(:namespace) { namespaces.create!(name: 'test', path: 'test', type: 'Group') }
+    let(:project) { projects.create!(namespace_id: namespace.id, name: 'test') }
+    let(:pipeline) { ci_pipelines.create!(project_id: project.id, ref: 'master', sha: 'adf43c3a', status: 'success') }
+
+    it 'nullifies runner_id for orphan ci_builds in range' do
+      ci_runners.create!(id: 2, runner_type: 'project_type')
+
+      ci_builds.create!(id: 5, type: 'Ci::Build', commit_id: pipeline.id, runner_id: 2)
+      ci_builds.create!(id: 7, type: 'Ci::Build', commit_id: pipeline.id, runner_id: 4)
+      ci_builds.create!(id: 8, type: 'Ci::Build', commit_id: pipeline.id, runner_id: 5)
+      ci_builds.create!(id: 9, type: 'Ci::Build', commit_id: pipeline.id, runner_id: 6)
+
+      subject.perform(4, 8, :ci_builds, :id, 10, 0)
+
+      expect(ci_builds.all).to contain_exactly(
+        an_object_having_attributes(id: 5, runner_id: 2),
+        an_object_having_attributes(id: 7, runner_id: nil),
+        an_object_having_attributes(id: 8, runner_id: nil),
+        an_object_having_attributes(id: 9, runner_id: 6)
+      )
+    end
+  end
+end