Test::Unit::Context
Makes Test::Unit::TestCase 'context-able' and thus (subjectively - hopefully)
much easier to read and write. If you have ever seen RSpec than it's the very
same context do ... end re-invented for Test::Unit.
Inspired by gem 'context' that does the same for the good 'old' test-unit 1.2.3 bundled with Ruby 1.8.x standard libraries.
Installation
Add it to your application's Gemfile (along with test-unit) e.g. :
group :test do
gem 'test-unit'
gem 'test-unit-context'
end
Or install it yourself, if you're not using Bundler :
$ gem install test-unit-context
Usage
class ChuckNorrisTest < Test::Unit::TestCase
setup do
@subject = ChuckNorris.new
end
test "can be divided by zero"
assert_equal @subject * 2, @subject / 0
end
context 'frozen' do
setup { @subject.freeze }
test "won't answer" do
assert_raise NoMemoryError do
@subject.frozen?
end
end
test "sqrt works"
assert_nothing_raised do
Math.sqrt -2
end
end
end
shared 'elementary math facts' do
test "square root is rational"
assert_kind_of Rational, Math.sqrt(@subject)
end
test "greater than infinity"
assert @infinity < @subject
end
private
setup
def create_infinity
@infinity = 1 / 0.0
end
end
uses 'elementary math facts'
context 'cloned' do
setup do
@subject = @subject.clone
end
test 'is Arnold Schwarzenegger' do
assert_instance_of Terminator, @subject
assert_nil @subject.is_a?(ChuckNorris)
end
like 'elementary math facts'
end
endSpec Mode
require 'test/unit/context/spec'
describe ChuckNorris, '#fart' do
setup do
@subject = ChuckNorris.new
@subject.fart
end
it "creates a parallel universe" do
assert Object.const_defined?(:Universe)
assert_equal @subject, Universe.instance
assert_empty ObjectSpace.each_object(Universe).to_a
end
end
# NOTE: do not try running this at home!Copyright
Copyright (c) 2016 Karol Bucek. See LICENSE (http://www.apache.org/licenses/LICENSE-2.0) for details.