Code example for http://thepugautomatic.com/2015/02/time-restricted-autodeploy/.

is_autodeploy_allowed.rb

class AutodeployPolicy
  ALLOWED_PERIODS = [
    "08:30:00".."11:59:59",
    # No autodeploys during lunch!
    "13:00:00".."18:00:00",
  ]

  # On Fridays, people sometimes leave earlier.
  # Not the funnest day to fix problems, so let's cut autodeploys earlier.
  END_OF_WORKDAY_ON_FRIDAYS = "16:30:00"

  def self.allow?(time)
    new(time).allow?
  end

  def initialize(time)
    @time = time
  end

  attr_reader :time
  private :time

  def allow?
    return false if weekend?
    return false if late_on_friday?

    within_allowed_hours?
  end

  private

  def weekend?
    time.saturday? || time.sunday?
  end

  def late_on_friday?
    time.friday? && formatted_time > END_OF_WORKDAY_ON_FRIDAYS
  end

  def within_allowed_hours?
    ALLOWED_PERIODS.any? { |period| period.cover?(formatted_time) }
  end

  # E.g. "08:30:00" or "18:00:00".
  def formatted_time
    time.strftime("%H:%M:%S")
  end
end

# When run directly (and not just required/loaded).
if __FILE__ == $0
  puts AutodeployPolicy.allow?(Time.now)
end

is_autodeploy_allowed_spec.rb

require "spec_helper"
require "ci/support/is_autodeploy_allowed"

describe AutodeployPolicy, ".allow?" do
  it "is true during office hours on weekdays" do
    expect(AutodeployPolicy.allow?(weekday_at 8, 30, 0)).to be_true
    expect(AutodeployPolicy.allow?(weekday_at 18, 0, 0)).to be_true
  end

  it "is false outside office hours on weekdays" do
    expect(AutodeployPolicy.allow?(weekday_at 8, 29, 59)).to be_false
    expect(AutodeployPolicy.allow?(weekday_at 18, 0, 1)).to be_false
  end

  it "is false during lunch on weekdays" do
    expect(AutodeployPolicy.allow?(weekday_at 11, 59, 59)).to be_true

    expect(AutodeployPolicy.allow?(weekday_at 12, 0, 0)).to be_false
    expect(AutodeployPolicy.allow?(weekday_at 12, 59, 59)).to be_false

    expect(AutodeployPolicy.allow?(weekday_at 13, 0, 0)).to be_true
  end

  it "false any time during weekends" do
    expect(AutodeployPolicy.allow?(weekend_at 10, 0, 0)).to be_false
  end

  it "assumes the workday ends earlier on Fridays" do
    expect(AutodeployPolicy.allow?(friday_at 16, 30, 0)).to be_true
    expect(AutodeployPolicy.allow?(friday_at 16, 30, 1)).to be_false
  end

  private

  def weekday_at(hour, min, sec)
    # A Thursday.
    Time.mktime(2014, 10, 2, hour, min, sec)
  end

  def friday_at(hour, min, sec)
    Time.mktime(2014, 10, 3, hour, min, sec)
  end

  def weekend_at(hour, min, sec)
    # A Saturday.
    Time.mktime(2014, 10, 4, hour, min, sec)
  end
end