discourse/lib/autospec/manager.rb

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require "listen"
require "thread"
require "fileutils"
require "autospec/reload_css"
require "autospec/base_runner"
require "socket_server"
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module Autospec; end
class Autospec::Manager
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def self.run(opts = {})
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self.new(opts).run
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end
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def initialize(opts = {})
@opts = opts
@debug = opts[:debug]
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@queue = []
@mutex = Mutex.new
@signal = ConditionVariable.new
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@runners = [ruby_runner]
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if ENV["QUNIT"] == "1"
@runners << javascript_runner
else
puts "Skipping JS tests, run them in the browser at /qunit or add QUNIT=1 to env"
end
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end
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def run
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Signal.trap("HUP") { stop_runners; exit }
Signal.trap("INT") { stop_runners; exit }
ensure_all_specs_will_run
start_runners
start_service_queue
listen_for_changes
puts "Press [ENTER] to stop the current run"
while @runners.any?(&:running?)
STDIN.gets
process_queue
end
rescue => e
fail(e, "failed in run")
ensure
stop_runners
end
private
def ruby_runner
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require "autospec/simple_runner"
Autospec::SimpleRunner.new
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end
def javascript_runner
require "autospec/qunit_runner"
Autospec::QunitRunner.new
end
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def ensure_all_specs_will_run(current_runner = nil)
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puts "@@@@@@@@@@@@ ensure_all_specs_will_run" if @debug
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@queue.reject! { |_, s, _| s == "spec" }
if current_runner
@queue.concat [['spec', 'spec', current_runner]]
end
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@runners.each do |runner|
@queue.concat [['spec', 'spec', runner]] unless @queue.any? { |_, s, r| s == "spec" && r == runner }
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end
end
[:start, :stop, :abort].each do |verb|
define_method("#{verb}_runners") do
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puts "@@@@@@@@@@@@ #{verb}_runners" if @debug
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@runners.each(&verb)
end
end
def start_service_queue
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puts "@@@@@@@@@@@@ start_service_queue" if @debug
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Thread.new do
while true
thread_loop
end
end
end
# the main loop, will run the specs in the queue till one fails or the queue is empty
def thread_loop
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puts "@@@@@@@@@@@@ thread_loop" if @debug
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@mutex.synchronize do
current = @queue.first
last_failed = false
last_failed = process_spec(current) if current
# stop & wait for the queue to have at least one item or when there's been a failure
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if @debug
puts "@@@@@@@@@@@@ waiting because..."
puts "@@@@@@@@@@@@ ...current spec has failed" if last_failed
puts "@@@@@@@@@@@@ ...queue is empty" if @queue.length == 0
end
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@signal.wait(@mutex) if @queue.length == 0 || last_failed
end
rescue => e
fail(e, "failed in main loop")
end
# will actually run the spec and check whether the spec has failed or not
def process_spec(current)
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puts "@@@@@@@@@@@@ process_spec --> #{current}" if @debug
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has_failed = false
# retrieve the instance of the runner
runner = current[2]
# actually run the spec (blocking call)
result = runner.run(current[1]).to_i
if result == 0
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puts "@@@@@@@@@@@@ success" if @debug
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# remove the spec from the queue
@queue.shift
else
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puts "@@@@@@@@@@@@ failure" if @debug
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has_failed = true
if result > 0
focus_on_failed_tests(current)
ensure_all_specs_will_run(runner)
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end
end
has_failed
end
def focus_on_failed_tests(current)
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puts "@@@@@@@@@@@@ focus_on_failed_tests --> #{current}" if @debug
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runner = current[2]
# we only want 1 focus in the queue
@queue.shift if current[0] == "focus"
# focus on the first 10 failed specs
failed_specs = runner.failed_specs[0..10]
puts "@@@@@@@@@@@@ failed_specs --> #{failed_specs}" if @debug
# try focus tag
if failed_specs.length > 0
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filename, _ = failed_specs[0].split(":")
if filename && File.exist?(filename) && !File.directory?(filename)
spec = File.read(filename)
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start, _ = spec.split(/\S*#focus\S*$/)
if start.length < spec.length
line = start.scan(/\n/).length + 1
puts "Found #focus tag on line #{line}!"
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failed_specs = ["#{filename}:#{line + 1}"]
end
end
end
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# focus on the failed specs
@queue.unshift ["focus", failed_specs.join(" "), runner] if failed_specs.length > 0
end
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def listen_for_changes
puts "@@@@@@@@@@@@ listen_for_changes" if @debug
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options = {
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ignore: /^lib\/autospec/,
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}
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if @opts[:force_polling]
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options[:force_polling] = true
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options[:latency] = @opts[:latency] || 3
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end
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path = File.expand_path(File.dirname(__FILE__) + "../../..")
if ENV['VIM_AUTOSPEC']
STDERR.puts "Using VIM file listener"
socket_path = (Rails.root + "tmp/file_change.sock").to_s
FileUtils.rm_f(socket_path)
server = SocketServer.new(socket_path)
server.start do |line|
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file, line = line.split(' ')
file = file.sub(Rails.root.to_s << "/", "")
# process_change can aquire a mutex and block
# the acceptor
Thread.new do
if file =~ /(es6|js)$/
process_change([[file]])
else
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process_change([[file, line]])
end
end
"OK"
end
return
end
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# to speed up boot we use a thread
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["spec", "lib", "app", "config", "test", "vendor", "plugins"].each do |watch|
puts "@@@@@@@@@ Listen to #{path}/#{watch} #{options}" if @debug
Thread.new do
begin
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listener = Listen.to("#{path}/#{watch}", options) do |modified, added, _|
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paths = [modified, added].flatten
paths.compact!
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paths.map! { |long| long[(path.length + 1)..-1] }
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process_change(paths)
end
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listener.start
sleep
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rescue => e
puts "FAILED to listen on changes to #{path}/#{watch}"
puts e
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end
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end
end
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end
def process_change(files)
return if files.length == 0
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puts "@@@@@@@@@@@@ process_change --> #{files}" if @debug
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specs = []
hit = false
files.each do |file, line|
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@runners.each do |runner|
# reloaders
runner.reloaders.each do |k|
if k.match(file)
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puts "@@@@@@@@@@@@ #{file} matched a reloader for #{runner}" if @debug
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runner.reload
return
end
end
# watchers
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runner.watchers.each do |k, v|
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if m = k.match(file)
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puts "@@@@@@@@@@@@ #{file} matched a watcher for #{runner}" if @debug
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hit = true
spec = v ? (v.arity == 1 ? v.call(m) : v.call) : file
with_line = spec
if spec == file && line
with_line = spec + ":" << line.to_s
end
if File.exists?(spec) || Dir.exists?(spec)
if with_line != spec
specs << [file, spec, runner]
end
specs << [file, with_line, runner]
end
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end
end
end
end
queue_specs(specs) if hit
rescue => e
fail(e, "failed in watcher")
end
def queue_specs(specs)
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puts "@@@@@@@@@@@@ queue_specs --> #{specs}" if @debug
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if specs.length == 0
locked = @mutex.try_lock
if locked
@signal.signal
@mutex.unlock
end
return
else
abort_runners
end
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puts "@@@@@@@@@@@@ waiting for the mutex" if @debug
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@mutex.synchronize do
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puts "@@@@@@@@@@@@ queueing specs" if @debug
puts "@@@@@@@@@@@@ #{@queue}" if @debug
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specs.each do |file, spec, runner|
# make sure there's no other instance of this spec in the queue
@queue.delete_if { |_, s, r| s.strip.start_with?(spec.strip) && r == runner }
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# deal with focused specs
if @queue.first && @queue.first[0] == "focus"
focus = @queue.shift
@queue.unshift([file, spec, runner])
unless spec.include?(":") && focus[1].include?(spec.split(":")[0])
if focus[1].include?(spec) || file != spec
@queue.unshift(focus)
end
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end
else
@queue.unshift([file, spec, runner])
end
# push run all specs to end of queue in correct order
ensure_all_specs_will_run(runner)
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end
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puts "@@@@@@@@@@@@ specs queued" if @debug
puts "@@@@@@@@@@@@ #{@queue}" if @debug
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@signal.signal
end
end
def process_queue
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puts "@@@@@@@@@@@@ process_queue" if @debug
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if @queue.length == 0
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puts "@@@@@@@@@@@@ queue is empty..." if @debug
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ensure_all_specs_will_run
@signal.signal
else
current = @queue.first
runner = current[2]
specs = runner.failed_specs
puts
puts
if specs.length == 0
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puts "No specs have failed yet! "
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puts
else
puts "The following specs have failed:"
specs.each { |s| puts s }
puts
specs = specs.map { |s| [s, s, runner] }
queue_specs(specs)
end
end
end
def fail(exception, message = nil)
puts message if message
puts exception.message
puts exception.backtrace.join("\n")
end
end