344 lines
9.0 KiB
Ruby
344 lines
9.0 KiB
Ruby
require "minitest/test"
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class Module # :nodoc:
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def infect_an_assertion meth, new_name, dont_flip = false # :nodoc:
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block = dont_flip == :block
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dont_flip = false if block
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target_obj = block ? '_{obj.method}' : '_(obj)'
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# warn "%-22p -> %p %p" % [meth, new_name, dont_flip]
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self.class_eval <<-EOM, __FILE__, __LINE__ + 1
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def #{new_name} *args
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where = Minitest.filter_backtrace(caller).first
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where = where.split(/:in /, 2).first # clean up noise
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Kernel.warn "DEPRECATED: global use of #{new_name} from #\{where}. Use #{target_obj}.#{new_name} instead. This will fail in Minitest 6."
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Minitest::Expectation.new(self, Minitest::Spec.current).#{new_name}(*args)
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end
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EOM
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Minitest::Expectation.class_eval <<-EOM, __FILE__, __LINE__ + 1
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def #{new_name} *args
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raise "Calling ##{new_name} outside of test." unless ctx
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case
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when #{!!dont_flip} then
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ctx.#{meth}(target, *args)
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when #{block} && Proc === target then
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ctx.#{meth}(*args, &target)
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else
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ctx.#{meth}(args.first, target, *args[1..-1])
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end
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end
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EOM
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end
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end
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Minitest::Expectation = Struct.new :target, :ctx # :nodoc:
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##
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# Kernel extensions for minitest
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module Kernel
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##
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# Describe a series of expectations for a given target +desc+.
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#
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# Defines a test class subclassing from either Minitest::Spec or
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# from the surrounding describe's class. The surrounding class may
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# subclass Minitest::Spec manually in order to easily share code:
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#
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# class MySpec < Minitest::Spec
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# # ... shared code ...
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# end
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#
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# class TestStuff < MySpec
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# it "does stuff" do
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# # shared code available here
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# end
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# describe "inner stuff" do
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# it "still does stuff" do
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# # ...and here
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# end
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# end
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# end
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#
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# For more information on getting started with writing specs, see:
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#
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# http://www.rubyinside.com/a-minitestspec-tutorial-elegant-spec-style-testing-that-comes-with-ruby-5354.html
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#
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# For some suggestions on how to improve your specs, try:
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#
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# https://betterspecs.org
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#
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# but do note that several items there are debatable or specific to
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# rspec.
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#
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# For more information about expectations, see Minitest::Expectations.
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def describe desc, *additional_desc, &block # :doc:
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stack = Minitest::Spec.describe_stack
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name = [stack.last, desc, *additional_desc].compact.join("::")
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sclas = stack.last || if Class === self && kind_of?(Minitest::Spec::DSL) then
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self
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else
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Minitest::Spec.spec_type desc, *additional_desc
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end
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cls = sclas.create name, desc
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stack.push cls
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cls.class_eval(&block)
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stack.pop
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cls
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end
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private :describe
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end
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##
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# Minitest::Spec -- The faster, better, less-magical spec framework!
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#
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# For a list of expectations, see Minitest::Expectations.
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class Minitest::Spec < Minitest::Test
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def self.current # :nodoc:
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Thread.current[:current_spec]
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end
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def initialize name # :nodoc:
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super
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Thread.current[:current_spec] = self
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end
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##
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# Oh look! A Minitest::Spec::DSL module! Eat your heart out DHH.
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module DSL
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##
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# Contains pairs of matchers and Spec classes to be used to
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# calculate the superclass of a top-level describe. This allows for
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# automatically customizable spec types.
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#
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# See: register_spec_type and spec_type
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TYPES = [[//, Minitest::Spec]]
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##
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# Register a new type of spec that matches the spec's description.
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# This method can take either a Regexp and a spec class or a spec
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# class and a block that takes the description and returns true if
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# it matches.
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#
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# Eg:
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#
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# register_spec_type(/Controller$/, Minitest::Spec::Rails)
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#
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# or:
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#
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# register_spec_type(Minitest::Spec::RailsModel) do |desc|
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# desc.superclass == ActiveRecord::Base
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# end
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def register_spec_type *args, &block
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if block then
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matcher, klass = block, args.first
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else
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matcher, klass = *args
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end
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TYPES.unshift [matcher, klass]
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end
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##
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# Figure out the spec class to use based on a spec's description. Eg:
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#
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# spec_type("BlahController") # => Minitest::Spec::Rails
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def spec_type desc, *additional
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TYPES.find { |matcher, _klass|
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if matcher.respond_to? :call then
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matcher.call desc, *additional
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else
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matcher === desc.to_s
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end
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}.last
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end
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def describe_stack # :nodoc:
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Thread.current[:describe_stack] ||= []
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end
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def children # :nodoc:
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@children ||= []
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end
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def nuke_test_methods! # :nodoc:
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self.public_instance_methods.grep(/^test_/).each do |name|
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self.send :undef_method, name
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end
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end
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##
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# Define a 'before' action. Inherits the way normal methods should.
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#
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# NOTE: +type+ is ignored and is only there to make porting easier.
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#
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# Equivalent to Minitest::Test#setup.
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def before _type = nil, &block
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define_method :setup do
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super()
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self.instance_eval(&block)
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end
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end
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##
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# Define an 'after' action. Inherits the way normal methods should.
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#
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# NOTE: +type+ is ignored and is only there to make porting easier.
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#
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# Equivalent to Minitest::Test#teardown.
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def after _type = nil, &block
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define_method :teardown do
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self.instance_eval(&block)
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super()
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end
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end
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##
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# Define an expectation with name +desc+. Name gets morphed to a
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# proper test method name. For some freakish reason, people who
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# write specs don't like class inheritance, so this goes way out of
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# its way to make sure that expectations aren't inherited.
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#
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# This is also aliased to #specify and doesn't require a +desc+ arg.
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#
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# Hint: If you _do_ want inheritance, use minitest/test. You can mix
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# and match between assertions and expectations as much as you want.
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def it desc = "anonymous", &block
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block ||= proc { skip "(no tests defined)" }
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@specs ||= 0
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@specs += 1
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name = "test_%04d_%s" % [ @specs, desc ]
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undef_klasses = self.children.reject { |c| c.public_method_defined? name }
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define_method name, &block
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undef_klasses.each do |undef_klass|
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undef_klass.send :undef_method, name
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end
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name
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end
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##
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# Essentially, define an accessor for +name+ with +block+.
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#
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# Why use let instead of def? I honestly don't know.
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def let name, &block
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name = name.to_s
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pre, post = "let '#{name}' cannot ", ". Please use another name."
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methods = Minitest::Spec.instance_methods.map(&:to_s) - %w[subject]
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raise ArgumentError, "#{pre}begin with 'test'#{post}" if
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name =~ /\Atest/
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raise ArgumentError, "#{pre}override a method in Minitest::Spec#{post}" if
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methods.include? name
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define_method name do
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@_memoized ||= {}
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@_memoized.fetch(name) { |k| @_memoized[k] = instance_eval(&block) }
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end
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end
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##
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# Another lazy man's accessor generator. Made even more lazy by
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# setting the name for you to +subject+.
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def subject &block
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let :subject, &block
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end
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def create name, desc # :nodoc:
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cls = Class.new(self) do
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@name = name
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@desc = desc
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nuke_test_methods!
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end
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children << cls
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cls
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end
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def name # :nodoc:
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defined?(@name) ? @name : super
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end
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def to_s # :nodoc:
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name # Can't alias due to 1.8.7, not sure why
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end
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attr_reader :desc # :nodoc:
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alias :specify :it
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##
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# Rdoc... why are you so dumb?
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module InstanceMethods
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##
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# Takes a value or a block and returns a value monad that has
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# all of Expectations methods available to it.
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#
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# _(1 + 1).must_equal 2
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#
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# And for blocks:
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#
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# _ { 1 + "1" }.must_raise TypeError
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#
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# This method of expectation-based testing is preferable to
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# straight-expectation methods (on Object) because it stores its
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# test context, bypassing our hacky use of thread-local variables.
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#
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# NOTE: At some point, the methods on Object will be deprecated
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# and then removed.
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#
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# It is also aliased to #value and #expect for your aesthetic
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# pleasure:
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#
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# _(1 + 1).must_equal 2
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# value(1 + 1).must_equal 2
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# expect(1 + 1).must_equal 2
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def _ value = nil, &block
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Minitest::Expectation.new block || value, self
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end
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alias value _
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alias expect _
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def before_setup # :nodoc:
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super
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Thread.current[:current_spec] = self
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end
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end
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def self.extended obj # :nodoc:
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obj.send :include, InstanceMethods
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end
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end
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extend DSL
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TYPES = DSL::TYPES # :nodoc:
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end
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require "minitest/expectations"
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class Object # :nodoc:
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include Minitest::Expectations unless ENV["MT_NO_EXPECTATIONS"]
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end
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