discourse/lib/autospec/manager.rb

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require "listen"
require "thread"
require "fileutils"
require "autospec/reload_css"
require "autospec/base_runner"
module Autospec; end
class Autospec::Manager
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
@runners = [ruby_runner, javascript_runner]
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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
if ENV["SPORK"]
require "autospec/spork_runner"
Autospec::SporkRunner.new
else
require "autospec/simple_runner"
Autospec::SimpleRunner.new
end
end
def javascript_runner
require "autospec/qunit_runner"
Autospec::QunitRunner.new
end
def ensure_all_specs_will_run
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puts "@@@@@@@@@@@@ ensure_all_specs_will_run" if @debug
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@runners.each do |runner|
@queue << ['spec', 'spec', runner] unless @queue.any? { |f, s, r| s == "spec" && r == runner }
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
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]
# 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 = {
ignore: /^public|^lib\/autospec/,
relative_paths: true,
}
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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
Thread.start do
Listen.to('.', options) do |modified, added, removed|
process_change([modified, added].flatten.compact)
end
end
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|
@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
runner.watchers.each do |k,v|
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
specs << [file, spec, runner] if File.exists?(spec) || Dir.exists?(spec)
end
end
end
# special watcher for styles/templates
Autospec::ReloadCss::WATCHERS.each do |k,v|
matches = []
matches << file if k.match(file)
Autospec::ReloadCss.run_on_change(matches) if matches.present?
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 { |f, s, r| s.strip == spec.strip && r == runner }
# deal with focused specs
if @queue.first && @queue.first[0] == "focus"
focus = @queue.shift
@queue.unshift([file, spec, runner])
if focus[1].include?(spec) || file != spec
@queue.unshift(focus)
end
else
@queue.unshift([file, spec, runner])
end
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