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# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Topics::MergeService do
let_it_be(:source_topic) { create(:topic, name: 'source_topic') }
let_it_be(:target_topic) { create(:topic, name: 'target_topic') }
let_it_be(:project_1) { create(:project, :public, topic_list: source_topic.name ) }
let_it_be(:project_2) { create(:project, :private, topic_list: source_topic.name ) }
let_it_be(:project_3) { create(:project, :public, topic_list: target_topic.name ) }
let_it_be(:project_4) { create(:project, :public, topic_list: [source_topic.name, target_topic.name] ) }
subject { described_class.new(source_topic, target_topic).execute }
describe '#execute' do
it 'merges source topic into target topic' do
subject
expect(target_topic.projects).to contain_exactly(project_1, project_2, project_3, project_4)
expect { source_topic.reload }.to raise_error(ActiveRecord::RecordNotFound)
end
it 'refreshes counters of target topic' do
expect { subject }
.to change { target_topic.reload.total_projects_count }.by(2)
.and change { target_topic.reload.non_private_projects_count }.by(1)
end
context 'when source topic fails to delete' do
it 'reverts previous changes' do
allow(source_topic.reload).to receive(:destroy!).and_raise(ActiveRecord::RecordNotDestroyed)
expect { subject }.to raise_error(ActiveRecord::RecordNotDestroyed)
expect(source_topic.projects).to contain_exactly(project_1, project_2, project_4)
expect(target_topic.projects).to contain_exactly(project_3, project_4)
end
end
context 'for parameter validation' do
using RSpec::Parameterized::TableSyntax
subject { described_class.new(source_topic_parameter, target_topic_parameter).execute }
where(:source_topic_parameter, :target_topic_parameter, :expected_message) do
nil | ref(:target_topic) | 'The source topic is not a topic.'
ref(:source_topic) | nil | 'The target topic is not a topic.'
ref(:target_topic) | ref(:target_topic) | 'The source topic and the target topic are identical.' # rubocop:disable Lint/BinaryOperatorWithIdenticalOperands
end
with_them do
it 'raises correct error' do
expect { subject }.to raise_error(ArgumentError) do |error|
expect(error.message).to eq(expected_message)
end
end
end
end
end
end
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