diff options
author | eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-05-07 12:04:49 +0000 |
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committer | eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-05-07 12:04:49 +0000 |
commit | 95e8c48dd3348503a8c7db5d0498894a1b676395 (patch) | |
tree | 9eef7f720314ebaff56845a74e203770e62284e4 /spec/mspec/lib/mspec/matchers/signed_zero.rb | |
parent | ed7d803500de38186c74bce94d233e85ef51e503 (diff) |
Add in-tree mspec and ruby/spec
* For easier modifications of ruby/spec by MRI developers.
* .gitignore: track changes under spec.
* spec/mspec, spec/rubyspec: add in-tree mspec and ruby/spec.
These files can therefore be updated like any other file in MRI.
Instructions are provided in spec/README.
[Feature #13156] [ruby-core:79246]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58595 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'spec/mspec/lib/mspec/matchers/signed_zero.rb')
-rw-r--r-- | spec/mspec/lib/mspec/matchers/signed_zero.rb | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/spec/mspec/lib/mspec/matchers/signed_zero.rb b/spec/mspec/lib/mspec/matchers/signed_zero.rb new file mode 100644 index 0000000000..3fd1472fc8 --- /dev/null +++ b/spec/mspec/lib/mspec/matchers/signed_zero.rb @@ -0,0 +1,28 @@ +class SignedZeroMatcher + def initialize(expected_sign) + @expected_sign = expected_sign + end + + def matches?(actual) + @actual = actual + (1.0/actual).infinite? == @expected_sign + end + + def failure_message + ["Expected #{@actual}", "to be #{"-" if @expected_sign == -1}0.0"] + end + + def negative_failure_message + ["Expected #{@actual}", "not to be #{"-" if @expected_sign == -1}0.0"] + end +end + +class Object + def be_positive_zero + SignedZeroMatcher.new(1) + end + + def be_negative_zero + SignedZeroMatcher.new(-1) + end +end |