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3.2.0 / 2015-02-03

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Enhancements:

• Add block_arg method to custom matcher API, which allows you to access the block passed to a custom matcher, if there is one. (Mike Dalton, #645)
• Provide more detail in failure message of yield_control matcher. (Jon Rowe, #650)
• Add a shorthand syntax for chain in the matcher DSL which assigns values for use elsewhere, for example chain :and_smaller_than, :small_value creates an attr_reader for small_value (Tom Stuart, #644)
• Provide a more helpful deprecation message when using the should syntax. (Elia Schito, #663)
• Provide more detail in the have_attributes matcher failure message. (Jon Rowe, #668)
• Make the have_attributes matcher diffable. (Jon Rowe, Alexey Fedorov, #668)
• Add output(...).to_std(out|err)_from_any_process as alternatives to output(...).to_std(out|err). The latter doesn't work when a sub process writes to the named stream but is much faster. (Alex Genco, #700)
• Improve compound matchers (created by and and or) so that diffs are included in failures when one or more of their matchers are diffable. (Alexey Fedorov, #713)

Bug Fixes:

• Avoid calling private_methods from the be predicate matcher on the target object if the object publicly responds to the predicate method. This avoids a possible error that can occur if the object raises errors from private_methods (which can happen with celluloid objects). (@chapmajs, #670)
• Make yield_control (with no modifier) default to at_least(:once) rather than raising a confusing error when multiple yields are encountered. (Myron Marston, #675)
• Fix "instance variable @color not initialized" warning when using rspec-expectations outside of an rspec-core context. (Myron Marston, #689)
• Fix start_with and end_with to work properly when checking a string against an array of strings. (Myron Marston, #690)
• Don't use internally delegated matchers when generating descriptions for examples without doc strings. (Myron Marston, #692)

3.1.2 / 2014-09-26

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Bug Fixes:

• Fix define_negated_matcher so that matchers that support fluent interfaces continue to be negated after you use the chained method. (Myron Marston, #656)
• Fix define_negated_matcher so that the matchers fail with an appropriate failure message. (Myron Marston, #659)

3.1.1 / 2014-09-15

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Bug Fixes:

• Fix regression in all matcher in 3.1.0 that prevented it from working on objects that are not Enumerable but do implement each_with_index (such as an ActiveRecord proxy). (Jori Hardman, #647)

3.1.0 / 2014-09-04

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Enhancements:

• Add have_attributes matcher, that passes if actual's attribute values match the expected attributes hash: Person = Struct.new(:name, :age) person = Person.new("Bob", 32) expect(person).to have_attributes(:name => "Bob", :age => 32). (Adam Farhi, #571)
• Extended compound matcher support to block matchers, for cases like: expect { ... }.to change { x }.to(3).and change { y }.to(4). (Myron Marston, #567)
• Include chained methods in custom matcher description and failure message when new include_chain_clauses_in_custom_matcher_descriptions config option is enabled. (Dan Oved, #600)
• Add thrice modifier to yield_control matcher as a synonym for exactly(3).times. (Dennis Taylor, #615)
• Add RSpec::Matchers.define_negated_matcher, which defines a negated version of the named matcher. (Adam Farhi, Myron Marston, #618)
• Document and support negation of contain_exactly/match_array. (Jon Rowe, #626).

Bug Fixes:

• Rename private LegacyMacherAdapter constant to LegacyMatcherAdapter to fix typo. (Abdelkader Boudih, #563)
• Fix all matcher so that it fails properly (rather than raising a NoMethodError) when matched against a non-enumerable. (Hao Su, #622)

3.0.4 / 2014-08-14

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Bug Fixes:

• Fix start_with and end_with so that they work properly with structs. (Myron Marston, #620)
• Fix failure message generation so that structs are printed properly in failures. Previously failure messages would represent them as an array. (Myron Marston, #620)
• Fix composable matcher support so that it does not wrongly treat structs as arrays. (Myron Marston, #620)

3.0.3 / 2014-07-21

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Bug Fixes:

• Fix issue with detection of generic operator matchers so they work correctly when undefined. (Myron Marston, #597)
• Don't inadvertently define BasicObject in 1.8.7. (Chris Griego, #603)
• Fix include matcher so that it fails gracefully when matched against an object that does not respond to include?. (Myron Marston, #607)

3.0.2 / 2014-06-19

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Bug Fixes:

• Fix regression in contain_exactly (AKA match_array) that caused it to wrongly pass when the expected array was empty. (Myron Marston, #581)
• Provide a better error message when you use the change(obj, :msg) form of the change matcher but forget the message argument. (Alex Sunderland, #585)
• Make the contain_exactly matcher work with arrays that contain hashes in arbitrary ordering. (Sam Phippen, #578)

3.0.1 / 2014-06-12

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Bug Fixes:

• Add a missing require that would cause the respond_to matcher to fail when used in a project where the rest of RSpec (e.g. core and expecatations) weren't being used. (Myron Marston, #566)
• Structs are no longer treated as arrays when diffed. (Jon Rowe, #576)

3.0.0 / 2014-06-01

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No code changes. Just taking it out of pre-release.

3.0.0.rc1 / 2014-05-18

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Breaking Changes for 3.0.0:

• Remove matcher_execution_context attribute from DSL-defined custom matchers. (Myron Marston)
• Remove RSpec::Matchers::Pretty#_pretty_print. (Myron Marston)
• Remove RSpec::Matchers::Pretty#expected_to_sentence. (Myron Marston)
• Rename RSpec::Matchers::Configuration constant to RSpec::Expectations::Configuration. (Myron Marston)
• Prevent have_xyz predicate matchers using private methods. (Adrian Gonzalez)
• Block matchers must now implement supports_block_expectations?. (Myron Marston)
• Stop supporting require 'rspec-expectations'. Use require 'rspec/expectations' instead. (Myron Marston)

Bug Fixes:

• Fix NoMethodError triggered by beta2 when YARD was loaded in the test environment. (Myron Marston)
• Fix be_xyz matcher to accept a do...end block. (Myron Marston)
• Fix composable matcher failure message generation logic so that it does not blow up when given $stdout or $stderr. (Myron Marston)
• Fix change matcher to work properly with IO objects. (Myron Marston)
• Fix exist matcher so that it can be used in composed matcher expressions involving objects that do not implement exist? or exists?. (Daniel Fone)
• Fix composable matcher match logic so that it clones matchers before using them in order to work properly with matchers that use internal memoization based on a given actual value. (Myron Marston)
• Fix be_xyz and has_xyz predicate matchers so that they can be used in composed matcher expressions involving objects that do not implement the predicate method. (Daniel Fone)

Enhancements:

• Document the remaining public APIs. rspec-expectations now has 100% of the public API documented and will remain that way (as new undocumented methods will fail the build). (Myron Marston)
• Improve the formatting of BigDecimal objects in eq matcher failure messages. (Daniel Fone)
• Improve the failure message for be_xyz predicate matchers so that it includes the inspect output of the receiver. (Erik Michaels-Ober, Sam Phippen)
• Add all matcher, to allow you to specify that a given matcher matches all elements in a collection: expect([1, 3, 5]).to all( be_odd ). (Adam Farhi)
• Add boolean aliases (&/|) for compound operators (and/or). (Adam Farhi)
• Give users a clear error when they wrongly use a value matcher in a block expectation expression (e.g. expect { 3 }.to eq(3)) or vice versa. (Myron Marston)

3.0.0.beta2 / 2014-02-17

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Breaking Changes for 3.0.0:

• Remove deprecated support for accessing the RSpec constant using Rspec or Spec. (Myron Marston)
• Remove deprecated RSpec::Expectations.differ=. (Myron Marston)
• Remove support for deprecated expect(...).should. (Myron Marston)
• Explicitly disallow expect { }.not_to change { } with by, by_at_least, by_at_most or to. These have never been supported but did not raise explicit errors. (Myron Marston)
• Provide === rather than == as an alias of matches? for all matchers. The semantics of === are closer to an RSpec matcher than ==. (Myron Marston)
• Remove deprecated RSpec::Matchers::OperatorMatcher constant. (Myron Marston)
• Make RSpec::Expectations::ExpectationNotMetError subclass Exception rather than StandardError so they can bypass a bare rescue in end-user code (e.g. when an expectation is set from within a rspec-mocks stub implementation). (Myron Marston)
• Remove Test::Unit and Minitest 4.x integration. (Myron Marston)

Enhancements:

• Simplify the failure message of the be matcher when matching against: true, false and nil. (Sam Phippen)
• Update matcher protocol and custom matcher DSL to better align with the newer expect syntax. If you want your matchers to maintain compatibility with multiple versions of RSpec, you can alias the new names to the old. (Myron Marston)
  • failure_message_for_should => failure_message
  • failure_message_for_should_not => failure_message_when_negated
  • match_for_should => match
  • match_for_should_not => match_when_negated
• Improve generated descriptions from change matcher. (Myron Marston)
• Add support for compound matcher expressions using and and or. Simply chain them off of any existing matcher to create an expression like expect(alphabet).to start_with("a").and end_with("z"). (Eloy Espinaco)
• Add contain_exactly as a less ambiguous version of match_array. Note that it expects the expected array to be splatted as individual args: expect(array).to contain_exactly(1, 2) is the same as expect(array).to match_array([1, 2]). (Myron Marston)
• Update contain_exactly/match_array so that it can match against other non-array collections (such as a Set). (Myron Marston)
• Update built-in matchers so that they can accept matchers as arguments to allow you to compose matchers in arbitrary ways. (Myron Marston)
• Add RSpec::Matchers::Composable mixin that can be used to make a custom matcher composable as well. Note that custom matchers defined via RSpec::Matchers.define already have this. (Myron Marston)
• Define noun-phrase aliases for built-in matchers, which can be used when creating composed matcher expressions that read better and provide better failure messages. (Myron Marston)
• Add RSpec::Matchers.alias_matcher so users can define their own matcher aliases. The description of the matcher will reflect the alternate matcher name. (Myron Marston)
• Add explicit be_between matcher. be_between has worked for a long time as a dynamic predicate matcher, but the failure message was suboptimal. The new matcher provides a much better failure message. (Erik Michaels-Ober)
• Enhance the be_between matcher to allow for inclusive or exclusive comparison (e.g. inclusive of min/max or exclusive of min/max). (Pedro Gimenez)
• Make failure message for not_to be #{operator} less confusing by only saying it's confusing when comparison operators are used. (Prathamesh Sonpatki)
• Improve failure message of eq matcher when Time or DateTime objects are used so that the full sub-second precision is included. (Thomas Holmes, Jeff Wallace)
• Add output matcher for expecting that a block outputs to_stdout or to_stderr. (Luca Pette, Matthias Günther)
• Forward a provided block on to the has_xyz? method call when the have_xyz matcher is used. (Damian Galarza)
• Provide integration with Minitest 5.x. Require rspec/expectations/minitest_integration after loading minitest to use rspec-expectations with minitest. (Myron Marston)

Bug Fixes:

• Fix wrong matcher descriptions with falsey expected value (yujinakayama)
• Fix expect { }.not_to change { }.from(x) so that the matcher only passes if the starting value is x. (Tyler Rick, Myron Marston)
• Fix hash diffing, so that it colorizes properly and doesn't consider trailing commas when performing the diff. (Jared Norman)
• Fix built-in matchers to fail normally rather than raising ArgumentError when given an object of the wrong type to match against, so that they work well in composite matcher expressions like expect([1.51, "foo"]).to include(a_string_matching(/foo/), a_value_within(0.1).of(1.5)). (Myron Marston)

Deprecations:

• Retain support for RSpec 2 matcher protocol (e.g. for matchers in 3rd party extension gems like shoulda), but it will print a deprecation warning. (Myron Marston)

3.0.0.beta1 / 2013-11-07

Full Changelog

Breaking Changes for 3.0.0:

• Remove explicit support for 1.8.6. (Jon Rowe)
• Remove the deprecated be_close matcher, preferring be_within instead. (Sam Phippen)
• Remove the deprecated have, have_at_least and have_at_most matchers. You can continue using those matchers through https://github.com/rspec/rspec-collection_matchers, or you can rewrite your expectations with something like expect(your_object.size).to eq(num). (Hugo Baraúna)
• Rename be_true and be_false to be_truthy and be_falsey. (Sam Phippen)
• Make expect { }.to_not raise_error(SomeSpecificClass, message), expect { }.to_not raise_error(SomeSpecificClass) and expect { }.to_not raise_error(message) invalid, since they are prone to hiding failures. Instead, use expect { }.to_not raise_error (with no args). (Sam Phippen)
• Within RSpec::Matchers.define blocks, helper methods made available either via def self.helper or extend HelperModule are no longer available to the match block (or any of the others). Instead include your helper module and define the helper method as an instance method. (Myron Marston)
• Force upgrading Diff::LCS for encoding compatability with diffs. (Jon Rowe)

Enhancements:

• Support do..end style block with raise_error matcher. (Yuji Nakayama)
• Rewrote custom matcher DSL to simplify its implementation and solve a few issues. (Myron Marston)
• Allow early return from within custom matcher DSL blocks. (Myron Marston)
• The custom matcher DSL's chain can now accept a block. (Myron Marston)
• Support setting an expectation on a raise_error matcher via a chained with_message method call. (Sam Phippen)

Bug Fixes:

• Allow include and match matchers to be used from within a DSL-defined custom matcher's match block. (Myron Marston)
• Correct encoding error message on diff failure (Jon Rowe)

Deprecations:

• Using the old :should syntax without explicitly configuring it is deprecated. It will continue to work but will emit a deprecation warning in RSpec 3 if you do not explicitly enable it. (Sam Phippen)

2.99.2 / 2014-07-21

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Bug Fixes:

• Fix regression in Expectations#method_handle_for where proxy objects with method delegated would wrongly not return a method handle. (Jon Rowe, #594)
• Fix issue with detection of generic operator matchers so they work correctly when undefined. (Myron Marston, #597)

2.99.1 / 2014-06-19

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Bug Fixes:

• Fix typo in custom matcher expected deprecation warning -- it's expected_as_array, not expected_array. (Frederick Cheung, #562)

2.99.0 / 2014-06-01

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Enhancements:

• Special case deprecation message for errors_on with rspec-rails to be more useful. (Aaron Kromer)

2.99.0.rc1 / 2014-05-18

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Deprecations:

• Deprecate matcher_execution_context attribute on DSL-defined custom matchers. (Myron Marston)
• Deprecate RSpec::Matchers::Pretty#_pretty_print. (Myron Marston)
• Deprecate RSpec::Matchers::Pretty#expected_to_sentence. (Myron Marston)
• Deprecate RSpec::Matchers::Configuration in favor of RSpec::Expectations::Configuration. (Myron Marston)
• Deprecate be_xyz predicate matcher on an object that doesn't respond to xyz? or xyzs?. (Daniel Fone)
• Deprecate have_xyz matcher on an object that doesn't respond to has_xyz?. (Daniel Fone)
• Deprecate have_xyz matcher on an object that has a private method has_xyz?. (Jon Rowe)
• Issue a deprecation warning when a block expectation expression is used with a matcher that doesn't explicitly support block expectations via supports_block_expectations?. (Myron Marston)
• Deprecate require 'rspec-expectations'. Use require 'rspec/expectations' instead. (Myron Marston)

2.99.0.beta2 / 2014-02-17

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Deprecations:

• Deprecate chaining by, by_at_least, by_at_most or to off of expect { }.not_to change { }. The docs have always said these are not supported for the negative form but now they explicitly raise errors in RSpec 3. (Myron Marston)
• Change the semantics of expect { }.not_to change { x }.from(y). In RSpec 2.x, this expectation would only fail if x started with the value of y and changed. If it started with a different value and changed, it would pass. In RSpec 3, it will pass only if the value starts at y and it does not change. (Myron Marston)
• Deprecate matcher == value as an alias for matcher.matches?(value), in favor of matcher === value. (Myron Marston)
• Deprecate RSpec::Matchers::OperatorMatcher in favor of RSpec::Matchers::BuiltIn::OperatorMatcher. (Myron Marston)
• Deprecate auto-integration with Test::Unit and minitest. Instead, include RSpec::Matchers in the appropriate test case base class yourself. (Myron Marston)
• Deprecate treating #expected on a DSL-generated custom matcher as an array when only 1 argument is passed to the matcher method. In RSpec 3 it will be the single value in order to make diffs work properly. (Jon Rowe)

2.99.0.beta1 / 2013-11-07

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Deprecations

• Deprecate have, have_at_least and have_at_most. You can continue using those matchers through https://github.com/rspec/rspec-collection_matchers, or you can rewrite your expectations with something like expect(your_object.size).to eq(num). (Hugo Baraúna)
• Deprecate be_xyz predicate matcher when xyz? is a private method. (Jon Rowe)
• Deprecate be_true/be_false in favour of be_truthy/be_falsey (for Ruby's conditional semantics) or be true/be false (for exact equality). (Sam Phippen)
• Deprecate calling helper methods from a custom matcher with the wrong scope. (Myron Marston)
  • def self.foo / extend Helper can be used to add macro methods (e.g. methods that call the custom matcher DSL methods), but should not be used to define helper methods called from within the DSL blocks.
  • def foo / include Helper is the opposite: it's for helper methods callable from within a DSL block, but not for defining macros.
  • RSpec 2.x allowed helper methods defined either way to be used for either purpose, but RSpec 3.0 will not.

2.14.5 / 2014-02-01

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Bug fixes

• Fix wrong matcher descriptions with falsey expected value (yujinakayama)

2.14.4 / 2013-11-06

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Bug fixes

• Make the match matcher produce a diff output. (Jon Rowe, Ben Moss)
• Choose encoding for diff's more intelligently, and when all else fails fall back to default internal encoding with replacing characters. (Jon Rowe)

2.14.3 / 2013-09-22

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Bug fixes

• Fix operator matchers (should syntax) when method is redefined on target. (Brandon Turner)
• Fix diffing of hashes with object based keys. (Jon Rowe)
• Fix operator matchers (should syntax) when operator is defined via method_missing (Jon Rowe)

2.14.2 / 2013-08-14

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Bug fixes

• Fix be_<predicate> matcher to not support operator chaining like the be matcher does (e.g. be == 5). This led to some odd behaviors since be_<predicate> == anything returned a BeComparedTo matcher and was thus always truthy. This was a consequence of the implementation (e.g. subclassing the basic Be matcher) and was not intended behavior. (Myron Marston).
• Fix change matcher to compare using == in addition to ===. This is important for an expression like: expect {}.to change { a.class }.from(ClassA).to(ClassB) because SomeClass === SomeClass returns false. (Myron Marston)

2.14.1 / 2013-08-08

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Bug fixes

• Ensure diff output uses the same encoding as the encoding of the string being diff'd to prevent Encoding::UndefinedConversionError errors (Jon Rowe).

2.14.0 / 2013-07-06

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Bug fixes

• Values that are not matchers use #inspect, rather than #description for documentation output (Andy Lindeman, Sam Phippen).
• Make expect(a).to be_within(x).percent_of(y) work with negative y (Katsuhiko Nishimra).
• Make the be_predicate matcher work as expected used with expect{...}.to change... (Sam Phippen).

2.14.0.rc1 / 2013-05-27

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Enhancements

• Enhance yield_control so that you can specify an exact or relative number of times: expect { }.to yield_control.exactly(3).times, expect { }.to yield_control.at_least(2).times, etc (Bartek Borkowski).
• Make the differ that is used when an expectation fails better handle arrays by splitting each element of the array onto its own line. (Sam Phippen)
• Accept duck-typed strings that respond to :to_str as expectation messages. (Toby Ovod-Everett)

Bug fixes

• Fix differ to not raise errors when dealing with differently-encoded strings (Jon Rowe).
• Fix expect(something).to be_within(x).percent_of(y) where x and y are both integers (Sam Phippen).
• Fix have matcher to handle the fact that on ruby 2.0, Enumerator#size may return nil (Kenta Murata).
• Fix expect { raise s }.to raise_error(s) where s is an error instance on ruby 2.0 (Sam Phippen).
• Fix expect(object).to raise_error passing. This now warns the user and fails the spec (tomykaira).

Deprecations

• Deprecate expect { }.not_to raise_error(SpecificErrorClass) or expect { }.not_to raise_error("some specific message"). Using these was prone to hiding failures as they would allow any other error to pass. (Sam Phippen and David Chelimsky)

2.13.0 / 2013-02-23

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Enhancements

• Add support for percent deltas to be_within matcher: expect(value).to be_within(10).percent_of(expected) (Myron Marston).
• Add support to include matcher to allow it to be given a list of matchers as the expecteds to match against (Luke Redpath).

Bug fixes

• Fix change matcher so that it dups strings in order to handle mutated strings (Myron Marston).
• Fix should be =~ /some regex/ / expect(...).to be =~ /some regex/. Previously, these either failed with a confusing undefined method matches?' for false:FalseClass error or were no-ops that didn't actually verify anything (Myron Marston).
• Add compatibility for diff-lcs 1.2 and relax the version constraint (Peter Goldstein).
• Fix DSL-generated matchers to allow multiple instances of the same matcher in the same example to have different description and failure messages based on the expected value (Myron Marston).
• Prevent undefined method #split for Array error when dumping the diff of an array of multiline strings (Myron Marston).
• Don't blow up when comparing strings that are in an encoding that is not ASCII compatible (Myron Marston).
• Remove confusing "Check the implementation of #==" message printed for empty diffs (Myron Marston).

2.12.1 / 2012-12-15

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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)

2.12.0 / 2012-11-12

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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

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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

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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

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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

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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)

2.10.0 / 2012-05-03

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Enhancements

• Add new start_with and end_with matchers (Jeremy Wadsack)
• Add new matchers for specifying yields (Myron Marston):
  • 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)

2.9.1 / 2012-04-03

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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)

2.9.0 / 2012-03-17

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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)

2.8.0 / 2012-01-04

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Enhancements

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

2.8.0.rc2 / 2011-12-19

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

2.8.0.rc1 / 2011-11-06

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Enhancements

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

2.7.0 / 2011-10-16

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Enhancements

• HaveMatcher converts argument using to_i (Alex Bepple & Pat Maddox)
• Improved failure message for the have_xxx matcher (Myron Marston)
• HaveMatcher supports count (Matthew Bellantoni)
• Change matcher dups Enumerable before the action, supporting custom Enumerable types like CollectionProxy in Rails (David Chelimsky)

Bug fixes

• Fix typo in have(n).xyz documentation (Jean Boussier)
• fix safe_sort for ruby 1.9.2 (Kernel now defines <=> for Object) (Peter van Hardenberg)

2.6.0 / 2011-05-12

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Enhancements

• change matcher accepts regexps (Robert Davis)
• better descriptions for have_xxx matchers (Magnus Bergmark)
• range.should cover(*values) (Anders Furseth)

Bug fixes

• Removed non-ascii characters that were choking rcov (Geoffrey Byers)
• change matcher dups arrays and hashes so their before/after states can be compared correctly.
• Fix the order of inclusion of RSpec::Matchers in Test::Unit::TestCase and MiniTest::Unit::TestCase to prevent a SystemStackError (Myron Marston)

2.5.0 / 2011-02-05

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Enhancements

• should exist works with exist? or exists? (Myron Marston)
• expect { ... }.not_to do_something (in addition to to_not)

Documentation

• improved docs for raise_error matcher (James Almond)

2.4.0 / 2011-01-02

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No functional changes in this release, which was made to align with the rspec-core-2.4.0 release.

Enhancements

• improved RDoc for change matcher (Jo Liss)

2.3.0 / 2010-12-12

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Enhancements

• diff strings when include matcher fails (Mike Sassak)

2.2.0 / 2010-11-28

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2.1.0 / 2010-11-07

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Enhancements

• be_within(delta).of(expected) matcher (Myron Marston)
• Lots of new Cucumber features (Myron Marston)
• Raise error if you try should != expected on Ruby-1.9 (Myron Marston)
• Improved failure messages from throw_symbol (Myron Marston)

Bug fixes

• Eliminate hard dependency on RSpec::Core (Myron Marston)
• have_matcher - use pluralize only when ActiveSupport inflections are indeed defined (Josep M Bach)
• throw_symbol matcher no longer swallows exceptions (Myron Marston)
• fix matcher chaining to avoid name collisions (Myron Marston)

2.0.0 / 2010-10-10

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Enhancements

• Add match_for_should_not method to matcher DSL (Myron Marston)

Bug fixes

• respond_to matcher works correctly with should_not with multiple methods (Myron Marston)
• include matcher works correctly with should_not with multiple values (Myron Marston)

2.0.0.rc / 2010-10-05

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Enhancements

• require 'rspec/expectations' in a T::U or MiniUnit suite (Josep M. Bach)

Bug fixes

• change by 0 passes/fails correctly (Len Smith)
• Add description to satisfy matcher

2.0.0.beta.22 / 2010-09-12

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Enhancements

• diffing improvements
  • diff multiline strings
  • don't diff single line strings
  • don't diff numbers (silly)
  • diff regexp + multiline string

Bug fixes * should[_not] change now handles boolean values correctly