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require "minitest/test"
class Module # :nodoc:
def infect_an_assertion meth, new_name, dont_flip = false # :nodoc:
# warn "%-22p -> %p %p" % [meth, new_name, dont_flip]
self.class_eval <<-EOM
def #{new_name} *args
Minitest::Expectation.new(self, Minitest::Spec.current).#{new_name}(*args)
end
EOM
Minitest::Expectation.class_eval <<-EOM, __FILE__, __LINE__ + 1
def #{new_name} *args
case
when #{!!dont_flip} then
ctx.#{meth}(target, *args)
when Proc === target then
ctx.#{meth}(*args, &target)
else
ctx.#{meth}(args.first, target, *args[1..-1])
end
end
EOM
end
end
Minitest::Expectation = Struct.new :target, :ctx # :nodoc:
##
# Kernel extensions for minitest
module Kernel
##
# Describe a series of expectations for a given target +desc+.
#
# Defines a test class subclassing from either Minitest::Spec or
# from the surrounding describe's class. The surrounding class may
# subclass Minitest::Spec manually in order to easily share code:
#
# class MySpec < Minitest::Spec
# # ... shared code ...
# end
#
# class TestStuff < MySpec
# it "does stuff" do
# # shared code available here
# end
# describe "inner stuff" do
# it "still does stuff" do
# # ...and here
# end
# end
# end
#
# For more information on getting started with writing specs, see:
#
# http://www.rubyinside.com/a-minitestspec-tutorial-elegant-spec-style-testing-that-comes-with-ruby-5354.html
#
# For some suggestions on how to improve your specs, try:
#
# http://betterspecs.org
#
# but do note that several items there are debatable or specific to
# rspec.
#
# For more information about expectations, see Minitest::Expectations.
def describe desc, *additional_desc, &block # :doc:
stack = Minitest::Spec.describe_stack
name = [stack.last, desc, *additional_desc].compact.join("::")
sclas = stack.last || if Class === self && kind_of?(Minitest::Spec::DSL) then
self
else
Minitest::Spec.spec_type desc, *additional_desc
end
cls = sclas.create name, desc
stack.push cls
cls.class_eval(&block)
stack.pop
cls
end
private :describe
end
##
# Minitest::Spec -- The faster, better, less-magical spec framework!
#
# For a list of expectations, see Minitest::Expectations.
class Minitest::Spec < Minitest::Test
def self.current # :nodoc:
Thread.current[:current_spec]
end
def initialize name # :nodoc:
super
Thread.current[:current_spec] = self
end
##
# Oh look! A Minitest::Spec::DSL module! Eat your heart out DHH.
module DSL
##
# Contains pairs of matchers and Spec classes to be used to
# calculate the superclass of a top-level describe. This allows for
# automatically customizable spec types.
#
# See: register_spec_type and spec_type
TYPES = [[//, Minitest::Spec]]
##
# Register a new type of spec that matches the spec's description.
# This method can take either a Regexp and a spec class or a spec
# class and a block that takes the description and returns true if
# it matches.
#
# Eg:
#
# register_spec_type(/Controller$/, Minitest::Spec::Rails)
#
# or:
#
# register_spec_type(Minitest::Spec::RailsModel) do |desc|
# desc.superclass == ActiveRecord::Base
# end
def register_spec_type(*args, &block)
if block then
matcher, klass = block, args.first
else
matcher, klass = *args
end
TYPES.unshift [matcher, klass]
end
##
# Figure out the spec class to use based on a spec's description. Eg:
#
# spec_type("BlahController") # => Minitest::Spec::Rails
def spec_type desc, *additional
TYPES.find { |matcher, _klass|
if matcher.respond_to? :call then
matcher.call desc, *additional
else
matcher === desc.to_s
end
}.last
end
def describe_stack # :nodoc:
Thread.current[:describe_stack] ||= []
end
def children # :nodoc:
@children ||= []
end
def nuke_test_methods! # :nodoc:
self.public_instance_methods.grep(/^test_/).each do |name|
self.send :undef_method, name
end
end
##
# Define a 'before' action. Inherits the way normal methods should.
#
# NOTE: +type+ is ignored and is only there to make porting easier.
#
# Equivalent to Minitest::Test#setup.
def before _type = nil, &block
define_method :setup do
super()
self.instance_eval(&block)
end
end
##
# Define an 'after' action. Inherits the way normal methods should.
#
# NOTE: +type+ is ignored and is only there to make porting easier.
#
# Equivalent to Minitest::Test#teardown.
def after _type = nil, &block
define_method :teardown do
self.instance_eval(&block)
super()
end
end
##
# Define an expectation with name +desc+. Name gets morphed to a
# proper test method name. For some freakish reason, people who
# write specs don't like class inheritance, so this goes way out of
# its way to make sure that expectations aren't inherited.
#
# This is also aliased to #specify and doesn't require a +desc+ arg.
#
# Hint: If you _do_ want inheritance, use minitest/test. You can mix
# and match between assertions and expectations as much as you want.
def it desc = "anonymous", &block
block ||= proc { skip "(no tests defined)" }
@specs ||= 0
@specs += 1
name = "test_%04d_%s" % [ @specs, desc ]
undef_klasses = self.children.reject { |c| c.public_method_defined? name }
define_method name, &block
undef_klasses.each do |undef_klass|
undef_klass.send :undef_method, name
end
name
end
##
# Essentially, define an accessor for +name+ with +block+.
#
# Why use let instead of def? I honestly don't know.
def let name, &block
name = name.to_s
pre, post = "let '#{name}' cannot ", ". Please use another name."
methods = Minitest::Spec.instance_methods.map(&:to_s) - %w[subject]
raise ArgumentError, "#{pre}begin with 'test'#{post}" if
name =~ /\Atest/
raise ArgumentError, "#{pre}override a method in Minitest::Spec#{post}" if
methods.include? name
define_method name do
@_memoized ||= {}
@_memoized.fetch(name) { |k| @_memoized[k] = instance_eval(&block) }
end
end
##
# Another lazy man's accessor generator. Made even more lazy by
# setting the name for you to +subject+.
def subject &block
let :subject, &block
end
def create name, desc # :nodoc:
cls = Class.new(self) do
@name = name
@desc = desc
nuke_test_methods!
end
children << cls
cls
end
def name # :nodoc:
defined?(@name) ? @name : super
end
def to_s # :nodoc:
name # Can't alias due to 1.8.7, not sure why
end
attr_reader :desc # :nodoc:
alias :specify :it
module InstanceMethods # :nodoc:
def before_setup # :nodoc:
super
Thread.current[:current_spec] = self
end
end
def self.extended obj # :nodoc:
obj.send :include, InstanceMethods
end
end
extend DSL
TYPES = DSL::TYPES # :nodoc:
end
require "minitest/expectations"
class Object # :nodoc:
include Minitest::Expectations unless ENV["MT_NO_EXPECTATIONS"]
end
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