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# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Gitlab::ImportExport::Json::StreamingSerializer do
let_it_be(:user) { create(:user) }
let_it_be(:release) { create(:release) }
let_it_be(:group) { create(:group) }
let_it_be(:exportable) do
create(:project,
:public,
:repository,
:issues_disabled,
:wiki_enabled,
:builds_private,
description: 'description',
releases: [release],
group: group,
approvals_before_merge: 1)
end
let_it_be(:issue) do
create(:issue,
assignees: [user],
project: exportable)
end
let(:exportable_path) { 'project' }
let(:logger) { Gitlab::Export::Logger.build }
let(:json_writer) { instance_double('Gitlab::ImportExport::Json::LegacyWriter') }
let(:hash) { { name: exportable.name, description: exportable.description }.stringify_keys }
let(:include) { [] }
let(:custom_orderer) { nil }
let(:relations_schema) do
{
only: [:name, :description],
include: include,
preload: { issues: nil },
export_reorder: custom_orderer
}
end
subject do
described_class.new(exportable, relations_schema, json_writer, exportable_path: exportable_path, logger: logger)
end
describe '#execute' do
before do
allow(json_writer).to receive(:write_attributes).with(exportable_path, hash)
end
it 'calls json_writer.write_attributes with proper params' do
subject.execute
end
context 'with many relations' do
let(:include) do
[{ issues: { include: [] } }]
end
before do
create_list(:issue, 3, project: exportable, relative_position: 10000) # ascending ids, same position positive
create_list(:issue, 3, project: exportable, relative_position: -5000) # ascending ids, same position negative
create_list(:issue, 3, project: exportable, relative_position: 0) # ascending ids, duplicate positions
create_list(:issue, 3, project: exportable, relative_position: nil) # no position
create_list(:issue, 3, :with_desc_relative_position, project: exportable ) # ascending ids, descending position
end
it 'calls json_writer.write_relation_array with proper params' do
expect(json_writer).to receive(:write_relation_array).with(exportable_path, :issues, array_including(issue.to_json))
subject.execute
end
it 'logs the relation name and the number of records to export' do
allow(json_writer).to receive(:write_relation_array)
allow(logger).to receive(:info)
subject.execute
expect(logger).to have_received(:info).with(
importer: 'Import/Export',
message: "Exporting issues relation. Number of records to export: 16",
project_id: exportable.id,
project_name: exportable.name,
project_path: exportable.full_path
)
end
context 'default relation ordering' do
it 'orders exported issues by primary key(:id)' do
expected_issues = exportable.issues.reorder(:id).map(&:to_json)
expect(json_writer).to receive(:write_relation_array).with(exportable_path, :issues, expected_issues)
subject.execute
end
end
context 'custom relation ordering ascending' do
let(:custom_orderer) do
{
issues: {
column: :relative_position,
direction: :asc,
nulls_position: :nulls_last
}
}
end
it 'orders exported issues by custom column(relative_position)' do
expected_issues = exportable.issues.reorder(:relative_position, :id).map(&:to_json)
expect(json_writer).to receive(:write_relation_array).with(exportable_path, :issues, expected_issues)
subject.execute
end
end
context 'custom relation ordering descending' do
let(:custom_orderer) do
{
issues: {
column: :relative_position,
direction: :desc,
nulls_position: :nulls_first
}
}
end
it 'orders exported issues by custom column(relative_position)' do
expected_issues = exportable.issues.reorder(Issue.arel_table[:relative_position].desc.nulls_first).order(id: :desc).map(&:to_json)
expect(json_writer).to receive(:write_relation_array).with(exportable_path, :issues, expected_issues)
subject.execute
end
end
end
context 'with single relation' do
let(:group_options) do
{ include: [], only: [:name, :path, :description] }
end
let(:include) do
[{ group: group_options }]
end
it 'calls json_writer.write_relation with proper params' do
expect(json_writer).to receive(:write_relation).with(exportable_path, :group, group.to_json(group_options))
subject.execute
end
it 'logs the relation name' do
allow(json_writer).to receive(:write_relation)
allow(logger).to receive(:info)
subject.execute
expect(logger).to have_received(:info).with(
importer: 'Import/Export',
message: 'Exporting group relation',
project_id: exportable.id,
project_name: exportable.name,
project_path: exportable.full_path
)
end
end
context 'with array relation' do
let(:project_member) { create(:project_member, user: user) }
let(:include) do
[{ project_members: { include: [] } }]
end
before do
allow(exportable).to receive(:project_members).and_return([project_member])
end
it 'calls json_writer.write_relation_array with proper params' do
expect(json_writer).to receive(:write_relation_array).with(exportable_path, :project_members, array_including(project_member.to_json))
subject.execute
end
it 'logs the relation name and the number of records to export' do
allow(json_writer).to receive(:write_relation_array)
allow(logger).to receive(:info)
subject.execute
expect(logger).to have_received(:info).with(
importer: 'Import/Export',
message: 'Exporting project_members relation. Number of records to export: 1',
project_id: exportable.id,
project_name: exportable.name,
project_path: exportable.full_path
)
end
end
describe 'load balancing' do
it 'reads from replica' do
expect(Gitlab::Database::LoadBalancing::Session.current).to receive(:use_replicas_for_read_queries).and_call_original
subject.execute
end
end
end
describe '.batch_size' do
it 'returns default batch size' do
expect(described_class.batch_size(exportable)).to eq(described_class::BATCH_SIZE)
end
end
describe '#serialize_relation' do
context 'when record is a merge request' do
let(:json_writer) do
Class.new do
def write_relation_array(_, _, enumerator)
enumerator.each { _1 }
end
end.new
end
it 'removes cached external diff' do
merge_request = create(:merge_request, source_project: exportable, target_project: exportable)
cache_dir = merge_request.merge_request_diff.send(:external_diff_cache_dir)
expect(subject).to receive(:remove_cached_external_diff).with(merge_request).twice
subject.serialize_relation({ merge_requests: { include: [] } })
expect(Dir.exist?(cache_dir)).to eq(false)
end
end
end
end
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