Petitest::Assertions

gem "petitest-assertions"

require "petitest/autorun"
require "petitest/assertions"

class ExampleTest < Petitest::TestGroup
  include ::Petitest::Assertions

  # ... test cases ...
end

assert_equal(2, 1 + 1)

assert_match(/foo/, "fooooo")

assert_operator(2, :>, 1)

assert_output(/foo/, nil) do
  puts "fooooo"
end

assert_output(nil, /foo/) do
  $stdout.puts "fooooo"
end

assert_output(/foo/, /bar/) do
  puts "fooooo"
  $stdout.puts "barrrr"
end

assert_raise(::StandardError) do
  raise
end

assert_to_be(:empty, [])

assert_to_have(:key, :foo, foo: :bar)