1 files changed, 37 insertions, 0 deletions
diff --git a/spec/lib/gitlab/background_migration/reset_duplicate_ci_runners_token_encrypted_values_on_projects_spec.rb b/spec/lib/gitlab/background_migration/reset_duplicate_ci_runners_token_encrypted_values_on_projects_spec.rb
new file mode 100644
index 00000000000..6aea549b136
--- /dev/null
+++ b/spec/lib/gitlab/background_migration/reset_duplicate_ci_runners_token_encrypted_values_on_projects_spec.rb
@@ -0,0 +1,37 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Gitlab::BackgroundMigration::ResetDuplicateCiRunnersTokenEncryptedValuesOnProjects do
+  let(:namespaces) { table(:namespaces) }
+  let(:projects) { table(:projects) }
+
+  let(:perform) { described_class.new.perform(1, 4) }
+
+  before do
+    namespaces.create!(id: 123, name: 'sample', path: 'sample')
+
+    projects.create!(id: 1, namespace_id: 123, runners_token_encrypted: 'duplicate')
+    projects.create!(id: 2, namespace_id: 123, runners_token_encrypted: 'a-runners-token')
+    projects.create!(id: 3, namespace_id: 123, runners_token_encrypted: 'duplicate')
+    projects.create!(id: 4, namespace_id: 123, runners_token_encrypted: nil)
+    projects.create!(id: 5, namespace_id: 123, runners_token_encrypted: 'duplicate-2')
+    projects.create!(id: 6, namespace_id: 123, runners_token_encrypted: 'duplicate-2')
+  end
+
+  describe '#up' do
+    before do
+      stub_const("#{described_class}::SUB_BATCH_SIZE", 2)
+    end
+
+    it 'nullifies duplicate tokens', :aggregate_failures do
+      perform
+
+      expect(projects.count).to eq(6)
+      expect(projects.all.pluck(:id, :runners_token_encrypted).to_h).to eq(
+        { 1 => nil, 2 => 'a-runners-token', 3 => nil, 4 => nil, 5 => 'duplicate-2', 6 => 'duplicate-2' }
+      )
+      expect(projects.pluck(:runners_token_encrypted).uniq).to match_array [nil, 'a-runners-token', 'duplicate-2']
+    end
+  end
+end