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author | eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-01-29 16:08:16 +0000 |
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committer | eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-01-29 16:08:16 +0000 |
commit | 3fa5bd38af50fb3d98de0ea51043d73f8d06a24b (patch) | |
tree | d473b71cc6925ee1e17727215e9f9a66e3f24802 /spec/ruby/core/integer/uminus_spec.rb | |
parent | 1e658d45e1f8dbadab18f9c35b5cfb5a5fec98bf (diff) | |
download | ruby-3fa5bd38af50fb3d98de0ea51043d73f8d06a24b.tar.gz |
Update to ruby/spec@83063a3
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62094 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'spec/ruby/core/integer/uminus_spec.rb')
-rw-r--r-- | spec/ruby/core/integer/uminus_spec.rb | 28 |
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 |