Log Message:
Update ruby-shoulda-matchers to 2.8.0.

pkgsrc change: allow build on Ruby 2.2.

# 2.8.0

### Deprecations

* `ensure_length_of` has been renamed to `validate_length_of`.
  `ensure_length_of` is deprecated and will be removed in 3.0.0.

* `set_the_flash` has been renamed to `set_flash`. `set_the_flash` is
  deprecated and will be removed in 3.0.0.

* `set_session(:foo)` is deprecated in favor of `set_session[:foo]`.
  `set_session(:foo)` will be invalid syntax in 3.0.0.

* Using `should set_session[:key].to(nil)` to assert that that a value has not
  been set is deprecated. Please use `should_not set_session[:key]` instead.
  In 3.0.0, `should set_session[:key].to(nil)` will only pass if the value is
  truly nil.

### Bug fixes

* Fix `delegate_method` so that it works again with shoulda-context. ([#591])

* Fix `validate_uniqueness_of` when used with `scoped_to` so that when one of
  the scope attributes is a polymorphic `*_type` attribute and the model has
  another validation on the same attribute, the matcher does not fail with an
  error. ([#592])

* Fix `has_many` used with `through` so that when the association does not
  exist, and the matcher fails, it does not raise an error when producing the
  failure message. ([#588])

* Fix `have_and_belong_to_many` used with `join_table` so that it does not fail
  when `foreign_key` and/or `association_foreign_key` was specified on the
  association as a symbol instead of a string. ([#584])

* Fix `allow_value` when an i18n translation key is passed to `with_message` and
  the `:against` option is used to specify an alternate attribute. A bug here
  also happened to affect `validate_confirmation_of` when an i18n translation
  key is passed to `with_message`. ([#593])

* Fix `class_name` qualifier for association matchers so that if the model being
  referenced is namespaced, the matcher will correctly resolve the class before
  checking it against the association's `class_name`. ([#537])

* Fix `validate_inclusion_of` used with `with_message` so that it fails if given
  a message that does not match the message on the validation. ([#598])

* Fix `route` matcher so that when controller and action are specified in hash
  notation (e.g. `posts#show`), route parameters such as `id` do not need to be
  specified as a string but may be specified as a number as well. ([#602])

* Fix `allow_value`, `validate_numericality_of` and `validate_inclusion_of` so
  that they handle RangeErrors emitted from ActiveRecord 4.2. These exceptions
  arise whenever we attempt to set an attribute using a value that lies outside
  the range of the column (assuming the column is an integer). RangeError is now
  treated specially, failing the test instead of bubbling up as an error.
  ([#634], [#637], [#642])

### Features

* Add ability to test `:primary_key` option on associations. ([#597])

* Add `allow_blank` qualifier to `validate_uniqueness_of` to complement
  the `allow_blank` option. ([#543])

* Change `set_session` so that #[] and #to qualifiers are optional, similar to
  `set_flash`. That is, you can now say `should set_session` to assert that any
  flash value has been set, or `should set_session.to('value')` to assert that
  any value in the session is 'value'.

* Change `set_session` so that its #to qualifier supports regexps, similar to
  `set_flash`.

* Add `with_prefix` qualifier to `delegate_method` to correspond to the `prefix`
  option for Rails's `delegate` macro. ([#622])

* Add support for Rails 4.2, especially fixing `serialize` matcher to remove
  warning about `serialized_attributes` being deprecated. ([#627])

* Update `dependent` qualifier on association matchers to support `:destroy`,
  `:delete`, `:nullify`, `:restrict`, `:restrict_with_exception`, and
  `:restrict_with_error`. You can also pass `true` or `false` to assert that
  the association has (or has not) been declared with *any* dependent option.
  ([#631])

### Improvements

* Tweak `allow_value` failure message so that it reads a bit nicer when listing
  existing errors.

[#591]: https://github.com/thoughtbot/shoulda-matchers/pull/591
[#592]: https://github.com/thoughtbot/shoulda-matchers/pull/592
[#588]: https://github.com/thoughtbot/shoulda-matchers/pull/588
[#584]: https://github.com/thoughtbot/shoulda-matchers/pull/584
[#593]: https://github.com/thoughtbot/shoulda-matchers/pull/593
[#597]: https://github.com/thoughtbot/shoulda-matchers/pull/597
[#537]: https://github.com/thoughtbot/shoulda-matchers/pull/537
[#598]: https://github.com/thoughtbot/shoulda-matchers/pull/598
[#602]: https://github.com/thoughtbot/shoulda-matchers/pull/602
[#543]: https://github.com/thoughtbot/shoulda-matchers/pull/543
[#622]: https://github.com/thoughtbot/shoulda-matchers/pull/622
[#627]: https://github.com/thoughtbot/shoulda-matchers/pull/627
[#631]: https://github.com/thoughtbot/shoulda-matchers/pull/631
[#634]: https://github.com/thoughtbot/shoulda-matchers/pull/634
[#637]: https://github.com/thoughtbot/shoulda-matchers/pull/637
[#642]: https://github.com/thoughtbot/shoulda-matchers/pull/642

# 2.7.0

### Deprecations

* `ensure_inclusion_of` has been renamed to `validate_inclusion_of`.
  `ensure_inclusion_of` is deprecated and will be removed in 3.0.0.

* `ensure_exclusion_of` has been renamed to `validate_exclusion_of`.
  `ensure_exclusion_of` is deprecated and will be removed in 3.0.0.

### Bug fixes

* Fix `delegate_method` so that it does not raise an error if the method that
  returns the delegate object is private.

* Warn when `ensure_inclusion_of` is chained with `.in_array([false, true])`
  as well as with `.in_array([true, false])`.

* Fix `set_session` so that the `to` qualifier if given nil checks that the
  session variable in question was set to nil (previously this actually did
  nothing).

* Fix `filter_param` so that it works when `config.filter_parameters` contains
  regexes.

* Fix `delegate_method` so that it can be required independent of Active
  Support.

* Fix `validate_uniqueness_of`. When used against an unpersisted record whose
  model contained a non-nullable column other than the one being validated, the
  matcher would break. Even if the test set that column to a value beforehand,
  the record had to be persisted in order for the matcher to work. Now this is
  no longer the case and the record can remain unpersisted.

* Fix `validate_absence_of`: it required that a string be passed as the
  attribute name rather than a symbol (which is the usual and documented usage).

### Improvements

* `have_and_belongs_to_many` now checks to make sure that the join table
  contains the correct columns for the left- and right-hand side of the
  association.

* Reword failure message for `delegate_method` so that it's a little more
  helpful.

### Features

* Add new matcher `define_enum_for` to test usage of the `enum` macro introduced
  in Rails 4.1.