lib/knapsack_pro/adapters/rspec_adapter.rb
# frozen_string_literal: true
require_relative '../formatters/time_tracker_fetcher'
module KnapsackPro
module Adapters
class RSpecAdapter < BaseAdapter
TEST_DIR_PATTERN = 'spec/**{,/*/**}/*_spec.rb'
def self.split_by_test_cases_enabled?
return false unless KnapsackPro::Config::Env.rspec_split_by_test_examples?
require 'rspec/core/version'
unless Gem::Version.new(::RSpec::Core::Version::STRING) >= Gem::Version.new('3.3.0')
raise "RSpec >= 3.3.0 is required to split test files by test examples. Learn more: #{KnapsackPro::Urls::SPLIT_BY_TEST_EXAMPLES}"
end
true
end
def self.test_file_cases_for(slow_test_files)
KnapsackPro.logger.info("Generating RSpec test examples JSON report for slow test files to prepare it to be split by test examples (by individual test cases). Thanks to that, a single slow test file can be split across parallel CI nodes. Analyzing #{slow_test_files.size} slow test files.")
# generate the RSpec JSON report in a separate process to not pollute the RSpec state
cmd = [
'RACK_ENV=test',
'RAILS_ENV=test',
KnapsackPro::Config::Env.rspec_test_example_detector_prefix,
'rake knapsack_pro:rspec_test_example_detector',
].join(' ')
unless Kernel.system(cmd)
raise "Could not generate JSON report for RSpec. Rake task failed when running #{cmd}"
end
# read the JSON report
KnapsackPro::TestCaseDetectors::RSpecTestExampleDetector.new.test_file_example_paths
end
def self.ensure_no_tag_option_when_rspec_split_by_test_examples_enabled!(cli_args)
if KnapsackPro::Config::Env.rspec_split_by_test_examples? && has_tag_option?(cli_args)
error_message = "It is not allowed to use the RSpec tag option together with the RSpec split by test examples feature. Please see: #{KnapsackPro::Urls::RSPEC__SPLIT_BY_TEST_EXAMPLES__TAG}"
KnapsackPro.logger.error(error_message)
raise error_message
end
end
def self.has_tag_option?(cli_args)
!!parsed_options(cli_args)&.[](:inclusion_filter)
end
def self.has_format_option?(cli_args)
!!parsed_options(cli_args)&.[](:formatters)
end
def self.has_require_rails_helper_option?(cli_args)
(parsed_options(cli_args)&.[](:requires) || []).include?("rails_helper")
end
def self.order_option(cli_args)
parsed_options(cli_args)&.[](:order)
end
def self.file_path_for(example)
[
-> { parse_file_path(example.id) },
-> { example.metadata[:file_path] },
-> { example.metadata[:example_group][:file_path] },
-> { top_level_group(example)[:file_path] },
]
.each do |path|
p = path.call
return p if p.include?('_spec.rb') || p.include?('.feature')
end
return ''
end
def self.parse_file_path(id)
# https://github.com/rspec/rspec-core/blob/1eeadce5aa7137ead054783c31ff35cbfe9d07cc/lib/rspec/core/example.rb#L122
id.match(/\A(.*?)(?:\[([\d\s:,]+)\])?\z/).captures.first
end
def self.rails_helper_exists?(test_dir)
File.exist?("#{test_dir}/rails_helper.rb")
end
# private
def self.top_level_group(example)
group = example.metadata[:example_group]
until group[:parent_example_group].nil?
group = group[:parent_example_group]
end
group
end
def bind_time_tracker
ensure_no_focus!
log_tests_duration
end
def ensure_no_focus!
::RSpec.configure do |config|
config.around(:each) do |example|
if example.metadata[:focus] && KnapsackPro::Adapters::RSpecAdapter.rspec_configuration.filter.rules[:focus]
file_path = KnapsackPro::Adapters::RSpecAdapter.file_path_for(example)
file_path = KnapsackPro::TestFileCleaner.clean(file_path)
raise "Knapsack Pro found an example tagged with focus in #{file_path}, please remove it. See more: #{KnapsackPro::Urls::RSPEC__SKIPS_TESTS}"
end
example.run
end
end
end
def log_tests_duration
::RSpec.configure do |config|
config.append_after(:suite) do
time_tracker = KnapsackPro::Formatters::TimeTrackerFetcher.call
if time_tracker
formatted = KnapsackPro::Presenter.global_time(time_tracker.duration)
KnapsackPro.logger.debug(formatted)
end
end
end
end
def bind_save_report
::RSpec.configure do |config|
config.after(:suite) do
time_tracker = KnapsackPro::Formatters::TimeTrackerFetcher.call
KnapsackPro::Report.save(time_tracker.batch)
end
end
end
def bind_before_queue_hook
::RSpec.configure do |config|
config.before(:suite) do
KnapsackPro::Hooks::Queue.call_before_queue
end
end
end
def bind_after_queue_hook
::RSpec.configure do |config|
config.after(:suite) do
KnapsackPro::Hooks::Queue.call_after_queue
end
end
end
private
# Hide RSpec configuration so that we could mock it in the spec.
# Mocking existing RSpec configuration could impact test's runtime.
def self.rspec_configuration
::RSpec.configuration
end
def self.parsed_options(cli_args)
::RSpec::Core::Parser.parse(cli_args)
rescue SystemExit
nil
end
end
# This is added to provide backwards compatibility
# In case someone is doing switch from knapsack gem to the knapsack_pro gem
# and didn't notice the class name changed
class RspecAdapter < RSpecAdapter
def self.bind
error_message = "You have attempted to call KnapsackPro::Adapters::RspecAdapter.bind. Please switch to using the new class name: KnapsackPro::Adapters::RSpecAdapter. See #{KnapsackPro::Urls::INSTALLATION_GUIDE} for up-to-date configuration instructions."
KnapsackPro.logger.error(error_message)
raise error_message
end
end
end
end