Update to ruby/spec@83063a3

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62094 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 28 insertions, 0 deletions

diff --git a/spec/ruby/core/integer/uminus_spec.rb b/spec/ruby/core/integer/uminus_spec.rb
new file mode 100644
index 0000000000..ad7cd194e3
--- /dev/null
+++ b/spec/ruby/core/integer/uminus_spec.rb
@@ -0,0 +1,28 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "Integer#-@" do
+  context "fixnum" do
+    it "returns self as a negative value" do
+      2.send(:-@).should == -2
+      -2.should == -2
+      -268435455.should == -268435455
+      (--5).should == 5
+      -8.send(:-@).should == 8
+    end
+
+    it "negates self at Fixnum/Bignum boundaries" do
+      fixnum_max.send(:-@).should == (0 - fixnum_max)
+      fixnum_min.send(:-@).should == (0 - fixnum_min)
+    end
+  end
+
+  context "bignum" do
+    it "returns self as a negative value" do
+      bignum_value.send(:-@).should == -9223372036854775808
+      (-bignum_value).send(:-@).should == 9223372036854775808
+
+      bignum_value(921).send(:-@).should == -9223372036854776729
+      (-bignum_value(921).send(:-@)).should == 9223372036854776729
+    end
+  end
+end