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# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Gitlab::BackgroundMigration::CleanupConcurrentSchemaChange do
describe '#perform' do
it 'new column does not exist' do
expect(subject).to receive(:column_exists?).with(:issues, :closed_at_timestamp).and_return(false)
expect(subject).not_to receive(:column_exists?).with(:issues, :closed_at)
expect(subject).not_to receive(:define_model_for)
expect(subject.perform(:issues, :closed_at, :closed_at_timestamp)).to be_nil
end
it 'old column does not exist' do
expect(subject).to receive(:column_exists?).with(:issues, :closed_at_timestamp).and_return(true)
expect(subject).to receive(:column_exists?).with(:issues, :closed_at).and_return(false)
expect(subject).not_to receive(:define_model_for)
expect(subject.perform(:issues, :closed_at, :closed_at_timestamp)).to be_nil
end
it 'has both old and new columns' do
expect(subject).to receive(:column_exists?).twice.and_return(true)
expect { subject.perform('issues', :closed_at, :created_at) }.to raise_error(NotImplementedError)
end
end
end
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