Credit to devdocs.io

minitest

minitest

module Minitest::Spec::DSL

Oh look! A Minitest::Spec::DSL module! Eat your heart out DHH.

Constants

TYPES

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

Public Instance Methods

after(_type = nil, &block) Show source
# File lib/minitest/spec.rb, line 198
def after _type = nil, &block
  define_method :teardown do
    self.instance_eval(&block)
    super()
  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::LifecycleHooks#teardown.

Calls superclass method
before(_type = nil, &block) Show source
# File lib/minitest/spec.rb, line 184
def before _type = nil, &block
  define_method :setup do
    super()
    self.instance_eval(&block)
  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::LifecycleHooks#setup.

Calls superclass method
it(desc = "anonymous", &block) Show source
# File lib/minitest/spec.rb, line 216
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

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.

Also aliased as: specify
let(name, &block) Show source
# File lib/minitest/spec.rb, line 240
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

Essentially, define an accessor for name with block.

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

register_spec_type(*args, &block) Show source
# File lib/minitest/spec.rb, line 139
def register_spec_type *args, &block
  if block then
    matcher, klass = block, args.first
  else
    matcher, klass = *args
  end
  TYPES.unshift [matcher, klass]
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
spec_type(desc, *additional) Show source
# File lib/minitest/spec.rb, line 153
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

Figure out the spec class to use based on a spec's description. Eg:

spec_type("BlahController") # => Minitest::Spec::Rails
specify(desc = "anonymous", &block)
Alias for: it
subject(&block) Show source
# File lib/minitest/spec.rb, line 259
def subject &block
  let :subject, &block
end

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

© Ryan Davis, seattle.rb
Licensed under the MIT License.