module MiniTest::Spec::DSL

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::Unit::TestCase#teardown.

# File lib/minitest/spec.rb, line 182
def after type = nil, &block
  define_method :teardown do
    self.instance_eval(&block)
    super()
  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::Unit::TestCase#setup.

# File lib/minitest/spec.rb, line 168
def before type = nil, &block
  define_method :setup do
    super()
    self.instance_eval(&block)
  end
end

Returns the children of this spec.

# File lib/minitest/spec.rb, line 151
def children
  @children ||= []
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 inheritence, use minitest/unit. You can mix and match between assertions and expectations as much as you want.

# File lib/minitest/spec.rb, line 200
def it desc = "anonymous", &block
  block ||= proc { skip "(no tests defined)" }

  @specs ||= 0
  @specs += 1

  name = "test_%04d_%s" % [ @specs, desc ]

  define_method name, &block

  self.children.each do |mod|
    mod.send :undef_method, name if mod.public_method_defined? name
  end

  name
end

Essentially, define an accessor for name with block.

Why use let instead of def? I honestly don't know.

# File lib/minitest/spec.rb, line 222
def let name, &block
  define_method name do
    @_memoized ||= {}
    @_memoized.fetch(name) { |k| @_memoized[k] = instance_eval(&block) }
  end
end

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

# File lib/minitest/spec.rb, line 120
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

# File lib/minitest/spec.rb, line 134
def spec_type desc
  TYPES.find { |matcher, klass|
    if matcher.respond_to? :call then
      matcher.call desc
    else
      matcher === desc.to_s
    end
  }.last
end

Another lazy man's accessor generator. Made even more lazy by setting the name for you to subject.

# File lib/minitest/spec.rb, line 233
def subject &block
  let :subject, &block
end