lax

# lax offers basically four ways to test things.
# method zero (the degenerate method): direct truthiness testing
test 1.even? # fail, but with a not-so-helpful error message

# method one: test zero-arity method calls for truthiness
test 1,  :even?  # fail, with a better error message than ^^
test [], :empty? # pass

# method two: use matchers
test "test".upcase, equals("TEST") 

# defining your own matchers is easy
Lax.matcher :at_least_n_words do |n, string|
  string.split.size >= n or fail_with "this test totes failed"
end

test "oh wow lol", at_least_n_words(3) # pass

# matchers are curried procs bound to methods, so you can do things like:
sum_to = ->(n) { returns n, :reduce, :+, nil } # returns is a built-in matcher
test [10, 5, 0], sum_to[15]                    # pass

# method three: specify return values of zero-arity method calls with a hash
# (all three tests in this example are executed independently)
test Array.new(6, 7),
  class:  Array, # pass
  size:   9,     # fail
  empty?: false  # pass

# any number of tests of any type can be included in a test:
# (truthiness testing just uses the built-in matcher 'truthy')
test -2,
  truthy,
  equals(-2.0),
  :even?,
  abs: 2

# Rakefile
require 'lax'
task(:lax) { Lax.run Dir['./my/test/directory/*.rb'] }
# boom done start hacking