thread_safety.rb

require 'json-schema'
require 'json-schema/validator'
require 'thread'
require 'thwait'

schema = {
  "$schema" => "http://json-schema.org/draft-03/schema#",
  "properties" => {
    "a" => {"type" => "string", "required" => true},
    "b" => {"type" => "string"}
  }
}

validator = JSON::Validator.new(schema, nil, record_errors: true)

# thread safety test
times = 5_000
threads = times.times.map do |x|
  Thread.new(x) do |x|
    Thread.current.abort_on_exception = true
    case x % 2
    when 0
      errors = validator.validate_data({"b" => "a"})
      fail "{} should not validate." if errors.empty?
    when 1
      errors = validator.validate_data({"a" => "a", "b" => "b"})
      fail "{} should not validate." unless errors.empty?
    end
  end
end
ThreadsWait.all_waits(threads)