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
# 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.
# 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.
# 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.
# 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.
# 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
# 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
# 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.
