From a3736e97a6ca517c2cd7d3d93a8f2ef86e39e5b5 Mon Sep 17 00:00:00 2001
From: eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sun, 7 May 2017 12:04:49 +0000
Subject: 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
---
 spec/mspec/lib/mspec/matchers/signed_zero.rb | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 spec/mspec/lib/mspec/matchers/signed_zero.rb

(limited to 'spec/mspec/lib/mspec/matchers/signed_zero.rb')

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
-- 
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