How to use it?

[Nakilon]

README does not seem to show how to make assert an accessible method. And I can't find the method assert in repo.

source "https://rubygems.org"
gem "rake"
gem "power_assert"

task :default do
  require "power_assert"
  assert do
    1 == 2
  end
end

NoMethodError: undefined method `assert' for main:Object

ruby 2.6.6