1 files changed, 40 insertions, 0 deletions
diff --git a/spec/lib/gitlab/background_migration/update_timelogs_null_spent_at_spec.rb b/spec/lib/gitlab/background_migration/update_timelogs_null_spent_at_spec.rb
new file mode 100644
index 00000000000..908f11aabc3
--- /dev/null
+++ b/spec/lib/gitlab/background_migration/update_timelogs_null_spent_at_spec.rb
@@ -0,0 +1,40 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Gitlab::BackgroundMigration::UpdateTimelogsNullSpentAt, schema: 20211215090620 do
+  let!(:previous_time) { 10.days.ago }
+  let!(:namespace) { table(:namespaces).create!(name: 'namespace', path: 'namespace') }
+  let!(:project) { table(:projects).create!(namespace_id: namespace.id) }
+  let!(:issue) { table(:issues).create!(project_id: project.id) }
+  let!(:merge_request) { table(:merge_requests).create!(target_project_id: project.id, source_branch: 'master', target_branch: 'feature') }
+  let!(:timelog1) { create_timelog!(issue_id: issue.id) }
+  let!(:timelog2) { create_timelog!(merge_request_id: merge_request.id) }
+  let!(:timelog3) { create_timelog!(issue_id: issue.id, spent_at: previous_time) }
+  let!(:timelog4) { create_timelog!(merge_request_id: merge_request.id, spent_at: previous_time) }
+
+  subject(:background_migration) { described_class.new }
+
+  before do
+    table(:timelogs).where.not(id: [timelog3.id, timelog4.id]).update_all(spent_at: nil)
+  end
+
+  describe '#perform' do
+    it 'sets correct spent_at' do
+      background_migration.perform(timelog1.id, timelog4.id)
+
+      expect(timelog1.reload.spent_at).to be_like_time(timelog1.created_at)
+      expect(timelog2.reload.spent_at).to be_like_time(timelog2.created_at)
+      expect(timelog3.reload.spent_at).to be_like_time(previous_time)
+      expect(timelog4.reload.spent_at).to be_like_time(previous_time)
+      expect(timelog3.reload.spent_at).not_to be_like_time(timelog3.created_at)
+      expect(timelog4.reload.spent_at).not_to be_like_time(timelog4.created_at)
+    end
+  end
+
+  private
+
+  def create_timelog!(**args)
+    table(:timelogs).create!(**args, time_spent: 1)
+  end
+end