Log message:
Update ruby-rspec-expectations to 2.12.1.

### 2.12.1 / 2012-12-15
[full \ 
changelog](http://github.com/rspec/rspec-expectations/compare/v2.12.0...v2.12.1)

Bug fixes

* Improve the failure message for an expression like
  `{}.should =~ {}`. (Myron Marston and Andy Lindeman)
* Provide a `match_regex` alias so that custom matchers
  built using the matcher DSL can use it (since `match`
  is a different method in that context).
  (Steven Harman)

Log message:
Update ruby-rspec-expectations to 2.12.0.

### 2.12.0 / 2012-11-12
[full changelog](http://github.com/rspec/rspec-expectations/compare/v2.11.3...2.12.0)

Enhancements

* Colorize diffs if the `--color` option is configured. (Alex Coplan)
* Include backtraces in unexpected errors handled by `raise_error`
  matcher (Myron Marston)
* Print a warning when users accidentally pass a non-string argument
  as an expectation message (Sam Phippen)
* `=~` and `match_array` matchers output a more useful error message when
  the actual value is not an array (or an object that responds to `#to_ary`)
  (Sam Phippen)

Bug fixes

* Fix `include` matcher so that `expect({}).to include(:a => nil)`
  fails as it should (Sam Phippen).
* Fix `be_an_instance_of` matcher so that `Class#to_s` is used in the
  description rather than `Class#inspect`, since some classes (like
  `ActiveRecord::Base`) define a long, verbose `#inspect`.
  (Tom Stuart)

### 2.11.3 / 2012-09-04
[full \ 
changelog](http://github.com/rspec/rspec-expectations/compare/v2.11.2...v2.11.3)

Bug fixes

* Fix (and deprecate) `expect { }.should` syntax so that it works even
  though it was never a documented or intended syntax. It worked as a
  consequence of the implementation of `expect` in RSpec 2.10 and
  earlier. (Myron Marston)
* Ensure #== is defined on built in matchers so that they can be composed.
  For example:

    expect {
      user.emailed!
    }.to change { user.last_emailed_at }.to be_within(1.second).of(Time.zone.now)

### 2.11.2 / 2012-07-25
[full \ 
changelog](http://github.com/rspec/rspec-expectations/compare/v2.11.1...v2.11.2)

Bug fixes

* Define `should` and `should_not` on `Object` rather than `BasicObject`
  on MacRuby. On MacRuby, `BasicObject` is defined but is not the root
  of the object hierarchy. (Gabriel Gilder)

Log message:
Update ruby-rspec-expectations to 2.11.3.

Changes are unavailable.

Log message:
Update ruby-rspec-expectations to 2.11.2.

### 2.11.2 / 2012-07-25
[full \ 
changelog](http://github.com/rspec/rspec-expectations/compare/v2.11.1...v2.11.2)

Bug fixes

* Define `should` and `should_not` on `Object` rather than `BasicObject`
  on MacRuby. On MacRuby, `BasicObject` is defined but is not the root
  of the object hierarchy. (Gabriel Gilder)

### 2.11.1 / 2012-07-08
[full \ 
changelog](http://github.com/rspec/rspec-expectations/compare/v2.11.0...v2.11.1)

Bug fixes

* Constrain `actual` in `be_within` matcher to values that respond to `-` instead
  of requiring a specific type.
    * `Time`, for example, is a legit alternative.

### 2.11.0 / 2012-07-07
[full \ 
changelog](http://github.com/rspec/rspec-expectations/compare/v2.10.0...v2.11.0)

Enhancements

* Expand `expect` syntax so that it supports expections on bare values
  in addition to blocks (Myron Marston).
* Add configuration options to control available expectation syntaxes
  (Myron Marston):
  * `RSpec.configuration.expect_with(:rspec) { |c| c.syntax = :expect }`
  * `RSpec.configuration.expect_with(:rspec) { |c| c.syntax = :should }`
  * `RSpec.configuration.expect_with(:rspec) { |c| c.syntax = [:should, :expect] }`
  * `RSpec.configuration.add_should_and_should_not_to Delegator`

Bug fixes

* Allow only `Numeric` values to be the "actual" in the `be_within` \ 
matcher.
  This prevents confusing error messages. (Su Zhang @zhangsu)
* Define `should` and `should_not` on `BasicObject` rather than `Kernel`
  on 1.9. This makes `should` and `should_not` work properly with
  `BasicObject`-subclassed proxy objects like `Delegator`. (Myron
  Marston)

Log message:
Update ruby-rspec-expectations to 2.10.0.

### 2.10.0 / 2012-05-03
[full changelog](http://github.com/rspec/rspec-expectations/compare/v2.9.1...v2.10.0)

Enhancements

* Add new `start_with` and `end_with` matchers (Jeremy Wadsack)
* Add new matchers for specifying yields (Myron Marson):
    * `expect {...}.to yield_control`
    * `expect {...}.to yield_with_args(1, 2, 3)`
    * `expect {...}.to yield_with_no_args`
    * `expect {...}.to yield_successive_args(1, 2, 3)`
* `match_unless_raises` takes multiple exception args

Bug fixes

* Fix `be_within` matcher to be inclusive of delta.
* Fix message-specific specs to pass on Rubinius (John Firebaugh)

Log message:
Update ruby-rspec-expectations to 2.9.1.

### 2.9.1 / 2012-04-03
[full changelog](http://github.com/rspec/rspec-expectations/compare/v2.9.0...2.9.1)

Bug fixes

* Provide a helpful message if the diff between two objects is empty.
* Fix bug diffing single strings with multiline strings.
* Fix for error with using custom matchers inside other custom matchers
  (mirasrael)
* Fix using execution context methods in nested DSL matchers (mirasrael)

Log message:
Update ruby-rspec-expectations to 2.9.0.

### 2.9.0 / 2012-03-17
[full changelog](http://github.com/rspec/rspec-expectations/compare/v2.8.0...v2.9.0)

Enhancements

* Move built-in matcher classes to RSpec::Matchers::BuiltIn to reduce pollution
  of RSpec::Matchers (which is included in every example).
* Autoload files with matcher classes to improve load time.

Bug fixes

* Align respond_to? and method_missing in DSL-defined matchers.
* Clear out user-defined instance variables between invocations of DSL-defined
  matchers.
* Dup the instance of a DSL generated matcher so its state is not changed by
  subsequent invocations.
* Treat expected args consistently across positive and negative expectations
  (thanks to Ralf Kistner for the heads up)

Log message:
Update ruby-rspec-expectations to 2.8.0.

2.8.0 / 2012-01-04

full changelog

Enhancements

* Better diff output for Hash (Philippe Creux)
* Eliminate Ruby warnings (Olek Janiszewski)

2.8.0.rc2 / 2011-12-19

full changelog

No changes for this release. Just releasing with the other rspec gems.

2.8.0.rc1 / 2011-11-06

full changelog

Enhancements

* Use classes for the built-in matchers (they're faster).
* Eliminate Ruby warnings (Matijs van Zuijlen)

Log message:
Update ruby-rspec-expectations package to 2.7.0.

Exact changes are unknown.

Log message:
Importing ruby-rspec-expectations version 2.6.0, part of ruby-rspec 2.6.0.

Behaviour Driven Development for Ruby

# RSpec Expectations

rspec-expectations adds `should` and `should_not` to every object and includes
RSpec::Matchers, a library of standard matchers.

## Documentation

* [Cucumber features](http://relishapp.com/rspec/rspec-expectations)
* [RDoc](http://rubydoc.info/gems/rspec-expectations/2.4.0/frames)