Example code for twitter comment I made about making tests less tedious

example_spec.rb

# https://twitter.com/josh_cheek/status/1575535820945211394
require 'rspec/autorun'

def idk(source)
  tag, args = source.split(" ", 2)
  [ "@_target",
    %("<#{tag}>"),
    "_output(#{args})",
    %("</#{tag}>"),
  ].join(" << ")
end

RSpec.configure { _1.formatter = "documentation" }

RSpec.describe 'templating lib or smth' do
  def self.test!(name, source, output)
    it(name) { expect(idk(source)).to be == output }
  end

  test! "positional argument splats",
         %(h1 *args),
         %{@_target << "<h1>" << _output(*args) << "</h1>"}

  test! "multiple positional argument splats",
         %(h1 *a, *b),
         %{@_target << "<h1>" << _output(*a, *b) << "</h1>"}

  test! "a variable",
         %(h1 name),
         %{@_target << "<h1>" << _output(name) << "</h1>"}
end

# >>
# >> templating lib or smth
# >>   positional argument splats
# >>   multiple positional argument splats
# >>   a variable
# >>
# >> Finished in 0.00113 seconds (files took 0.05105 seconds to load)
# >> 3 examples, 0 failures
# >>