gitlab-org--gitlab-foss/spec/migrations/remove_duplicate_labels_from_project_spec.rb

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# frozen_string_literal: true
require 'spec_helper'
require Rails.root.join('db', 'post_migrate', '20200305082754_remove_duplicate_labels_from_project.rb')
RSpec.describe RemoveDuplicateLabelsFromProject do
let(:labels_table) { table(:labels) }
let(:labels) { labels_table.all }
let(:projects_table) { table(:projects) }
let(:projects) { projects_table.all }
let(:namespaces_table) { table(:namespaces) }
let(:namespaces) { namespaces_table.all }
let(:backup_labels_table) { table(:backup_labels) }
let(:backup_labels) { backup_labels_table.all }
# all the possible tables with records that may have a relationship with a label
let(:analytics_cycle_analytics_group_stages_table) { table(:analytics_cycle_analytics_group_stages) }
let(:analytics_cycle_analytics_project_stages_table) { table(:analytics_cycle_analytics_project_stages) }
let(:board_labels_table) { table(:board_labels) }
let(:label_links_table) { table(:label_links) }
let(:label_priorities_table) { table(:label_priorities) }
let(:lists_table) { table(:lists) }
let(:resource_label_events_table) { table(:resource_label_events) }
let!(:group_one) { namespaces_table.create!(id: 1, type: 'Group', name: 'group', path: 'group') }
let!(:project_one) do
projects_table.create!(id: 1, name: 'project', path: 'project',
visibility_level: 0, namespace_id: group_one.id)
end
let(:label_title) { 'bug' }
let(:label_color) { 'red' }
let(:label_description) { 'nice label' }
let(:group_id) { group_one.id }
let(:project_id) { project_one.id }
let(:other_title) { 'feature' }
let(:group_label_attributes) do
{
title: label_title, color: label_color, group_id: group_id, type: 'GroupLabel', template: false, description: label_description
}
end
let(:project_label_attributes) do
{
title: label_title, color: label_color, project_id: project_id, type: 'ProjectLabel', template: false, description: label_description
}
end
let(:migration) { described_class.new }
describe 'removing full duplicates' do
context 'when there are no duplicate labels' do
let!(:first_label) { labels_table.create!(project_label_attributes.merge(id: 1, title: "a different label")) }
let!(:second_label) { labels_table.create!(project_label_attributes.merge(id: 2, title: "a totally different label")) }
it 'does not remove anything' do
expect { migration.up }.not_to change { backup_labels_table.count }
end
it 'restores removed records when rolling back - no change' do
migration.up
expect { migration.down }.not_to change { labels_table.count }
end
end
context 'with duplicates with no relationships' do
# can't use the activerecord class because the `type` makes it think it has polymorphism and should be/have a ProjectLabel subclass
let(:backup_labels) { ApplicationRecord.connection.execute('SELECT * from backup_labels') }
let!(:first_label) { labels_table.create!(project_label_attributes.merge(id: 1)) }
let!(:second_label) { labels_table.create!(project_label_attributes.merge(id: 2)) }
let!(:third_label) { labels_table.create!(project_label_attributes.merge(id: 3, title: other_title)) }
let!(:fourth_label) { labels_table.create!(project_label_attributes.merge(id: 4, title: other_title)) }
it 'creates a backup record for each removed record' do
expect { migration.up }.to change { backup_labels_table.count }.from(0).to(2)
end
it 'creates the correct backup records with `create` restore_action' do
migration.up
expect(backup_labels.find { |bl| bl["id"] == 2 }).to include(second_label.attributes.merge("restore_action" => described_class::CREATE, "new_title" => nil, "created_at" => anything, "updated_at" => anything))
expect(backup_labels.find { |bl| bl["id"] == 4 }).to include(fourth_label.attributes.merge("restore_action" => described_class::CREATE, "new_title" => nil, "created_at" => anything, "updated_at" => anything))
end
it 'deletes all but one' do
migration.up
expect { second_label.reload }.to raise_error(ActiveRecord::RecordNotFound)
expect { fourth_label.reload }.to raise_error(ActiveRecord::RecordNotFound)
end
it 'restores removed records on rollback' do
second_label_attributes = modified_attributes(second_label)
fourth_label_attributes = modified_attributes(fourth_label)
migration.up
migration.down
expect(second_label.attributes).to include(second_label_attributes)
expect(fourth_label.attributes).to include(fourth_label_attributes)
end
end
context 'two duplicate records, one of which has a relationship' do
let!(:first_label) { labels_table.create!(project_label_attributes.merge(id: 1)) }
let!(:second_label) { labels_table.create!(project_label_attributes.merge(id: 2)) }
let!(:label_priority) { label_priorities_table.create!(label_id: second_label.id, project_id: project_id, priority: 1) }
it 'does not remove anything' do
expect { migration.up }.not_to change { labels_table.count }
end
it 'does not create a backup record with `create` restore_action' do
expect { migration.up }.not_to change { backup_labels_table.where(restore_action: described_class::CREATE).count }
end
it 'restores removed records when rolling back - no change' do
migration.up
expect { migration.down }.not_to change { labels_table.count }
end
end
context 'multiple duplicates, a subset of which have relationships' do
let!(:first_label) { labels_table.create!(project_label_attributes.merge(id: 1)) }
let!(:second_label) { labels_table.create!(project_label_attributes.merge(id: 2)) }
let!(:label_priority_for_second_label) { label_priorities_table.create!(label_id: second_label.id, project_id: project_id, priority: 1) }
let!(:third_label) { labels_table.create!(project_label_attributes.merge(id: 3)) }
let!(:fourth_label) { labels_table.create!(project_label_attributes.merge(id: 4)) }
let!(:label_priority_for_fourth_label) { label_priorities_table.create!(label_id: fourth_label.id, project_id: project_id, priority: 2) }
it 'creates a backup record with `create` restore_action for each removed record' do
expect { migration.up }.to change { backup_labels_table.where(restore_action: described_class::CREATE).count }.from(0).to(1)
end
it 'creates the correct backup records' do
migration.up
# can't use the activerecord class because the `type` column makes it think it has polymorphism and should be/have a ProjectLabel subclass
backup_labels = ApplicationRecord.connection.execute('SELECT * from backup_labels')
expect(backup_labels.find { |bl| bl["id"] == 3 }).to include(third_label.attributes.merge("restore_action" => described_class::CREATE, "new_title" => nil, "created_at" => anything, "updated_at" => anything))
end
it 'deletes the duplicate record' do
migration.up
expect { first_label.reload }.not_to raise_error
expect { second_label.reload }.not_to raise_error
expect { third_label.reload }.to raise_error(ActiveRecord::RecordNotFound)
end
it 'restores removed records on rollback' do
third_label_attributes = modified_attributes(third_label)
migration.up
migration.down
expect(third_label.attributes).to include(third_label_attributes)
end
end
end
describe 'renaming partial duplicates' do
# partial duplicates - only project_id and title match. Distinct colour prevents deletion.
context 'when there are no duplicate labels' do
let!(:first_label) { labels_table.create!(project_label_attributes.merge(id: 1, title: "a unique label", color: 'green')) }
let!(:second_label) { labels_table.create!(project_label_attributes.merge(id: 2, title: "a totally different, unique, label", color: 'blue')) }
it 'does not rename anything' do
expect { migration.up }.not_to change { backup_labels_table.count }
end
end
context 'with duplicates with no relationships' do
let!(:first_label) { labels_table.create!(project_label_attributes.merge(id: 1, color: 'green')) }
let!(:second_label) { labels_table.create!(project_label_attributes.merge(id: 2, color: 'blue')) }
let!(:third_label) { labels_table.create!(project_label_attributes.merge(id: 3, title: other_title, color: 'purple')) }
let!(:fourth_label) { labels_table.create!(project_label_attributes.merge(id: 4, title: other_title, color: 'yellow')) }
it 'creates a backup record for each renamed record' do
expect { migration.up }.to change { backup_labels_table.count }.from(0).to(2)
end
it 'creates the correct backup records with `rename` restore_action' do
migration.up
# can't use the activerecord class because the `type` makes it think it has polymorphism and should be/have a ProjectLabel subclass
backup_labels = ApplicationRecord.connection.execute('SELECT * from backup_labels')
expect(backup_labels.find { |bl| bl["id"] == 2 }).to include(second_label.attributes.merge("restore_action" => described_class::RENAME, "created_at" => anything, "updated_at" => anything))
expect(backup_labels.find { |bl| bl["id"] == 4 }).to include(fourth_label.attributes.merge("restore_action" => described_class::RENAME, "created_at" => anything, "updated_at" => anything))
end
it 'modifies the titles of the partial duplicates' do
migration.up
expect(second_label.reload.title).to match(/#{label_title}_duplicate#{second_label.id}$/)
expect(fourth_label.reload.title).to match(/#{other_title}_duplicate#{fourth_label.id}$/)
end
it 'restores renamed records on rollback' do
second_label_attributes = modified_attributes(second_label)
fourth_label_attributes = modified_attributes(fourth_label)
migration.up
migration.down
expect(second_label.reload.attributes).to include(second_label_attributes)
expect(fourth_label.reload.attributes).to include(fourth_label_attributes)
end
context 'when the labels have a long title that might overflow' do
let(:long_title) { "a" * 255 }
before do
first_label.update_attribute(:title, long_title)
second_label.update_attribute(:title, long_title)
end
it 'keeps the length within the limit' do
migration.up
expect(second_label.reload.title).to eq("#{"a" * 244}_duplicate#{second_label.id}")
expect(second_label.title.length).to eq 255
end
end
end
end
def modified_attributes(label)
label.attributes.except('created_at', 'updated_at')
end
end