discourse/spec/lib/backup_restore/meta_data_handler_spec.rb

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# frozen_string_literal: true
require 'rails_helper'
require_relative 'shared_context_for_backup_restore'
describe BackupRestore::MetaDataHandler do
include_context "shared stuff"
let!(:backup_filename) { 'discourse-2019-11-18-143242-v20191108000414.tar.gz' }
def with_metadata_file(content)
Dir.mktmpdir do |directory|
if !content.nil?
path = File.join(directory, BackupRestore::MetaDataHandler::METADATA_FILE)
File.write(path, content)
end
yield(directory)
end
end
def validate_metadata(filename, tmp_directory)
BackupRestore::MetaDataHandler.new(logger, filename, tmp_directory).validate
end
context "metadata file" do
it "extracts metadata from file when metadata file exists" do
metadata = '{"source":"discourse","version":20160329101122}'
with_metadata_file(metadata) do |dir|
expect(validate_metadata(backup_filename, dir))
.to include(version: 20160329101122)
end
end
it "raises an exception when the metadata file contains invalid JSON" do
currupt_metadata = '{"version":20160329101122'
with_metadata_file(currupt_metadata) do |dir|
expect { validate_metadata(backup_filename, dir) }
.to raise_error(BackupRestore::MetaDataError)
end
end
it "raises an exception when the metadata file is empty" do
with_metadata_file('') do |dir|
expect { validate_metadata(backup_filename, dir) }
.to raise_error(BackupRestore::MetaDataError)
end
end
it "raises an exception when the metadata file contains an invalid version number" do
metadata = '{"source":"discourse","version":"1abcdefghijklm"}'
with_metadata_file(metadata) do |dir|
expect { validate_metadata(backup_filename, dir) }
.to raise_error(BackupRestore::MetaDataError)
end
end
it "raises an exception when the metadata file contains an empty version number" do
metadata = '{"source":"discourse","version":""}'
with_metadata_file(metadata) do |dir|
expect { validate_metadata(backup_filename, dir) }
.to raise_error(BackupRestore::MetaDataError)
end
end
end
context "filename" do
it "extracts metadata from filename when metadata file does not exist" do
with_metadata_file(nil) do |dir|
expect(validate_metadata(backup_filename, dir))
.to include(version: 20191108000414)
end
end
it "raises an exception when the filename contains no version number" do
filename = 'discourse-2019-11-18-143242.tar.gz'
expect { validate_metadata(filename, nil) }
.to raise_error(BackupRestore::MetaDataError)
end
it "raises an exception when the filename contains an invalid version number" do
filename = 'discourse-2019-11-18-143242-v123456789.tar.gz'
expect { validate_metadata(filename, nil) }
.to raise_error(BackupRestore::MetaDataError)
filename = 'discourse-2019-11-18-143242-v1abcdefghijklm.tar.gz'
expect { validate_metadata(filename, nil) }
.to raise_error(BackupRestore::MetaDataError)
end
end
it "raises an exception when the backup's version is newer than the current version" do
new_backup_filename = 'discourse-2019-11-18-143242-v20191113193141.sql.gz'
BackupRestore.expects(:current_version)
.returns(20191025005204).once
expect { validate_metadata(new_backup_filename, nil) }
.to raise_error(BackupRestore::MigrationRequiredError)
end
end