testing proto-framework

check.rb

class Verify
  attr_reader :subject

  def initialize(subject)
    @subject = subject
  end

  def eq(b)
    if subject == b
      puts "\e[38;5;51m +1 \e[0m"
    else
      puts "\e[38;5;9m -1   #{subject.inspect} != #{b.inspect}\e[0m"
    end
  end
end

def verify(a)
  Verify.new(a)
end

def check(name, &block)
  print "\n - #{name}  "
  block.call
end

# Examples:

check "2 + 3 is 5" do
  verify(2 + 3).eq 5
end

check "Nothing is true" do
  verify(nil).eq true
end

# will output something like:
#
# - 2 + 3 is 5   +1 
#
# - Nothing is true   -1  (nil != true)