mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
3fa5bd38af
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62094 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
38 lines
952 B
Ruby
38 lines
952 B
Ruby
require File.expand_path('../../../spec_helper', __FILE__)
|
|
|
|
describe "Integer#odd?" do
|
|
context "fixnum" do
|
|
it "returns true when self is an odd number" do
|
|
(-2).odd?.should be_false
|
|
(-1).odd?.should be_true
|
|
|
|
0.odd?.should be_false
|
|
1.odd?.should be_true
|
|
2.odd?.should be_false
|
|
|
|
bignum_value(0).odd?.should be_false
|
|
bignum_value(1).odd?.should be_true
|
|
|
|
(-bignum_value(0)).odd?.should be_false
|
|
(-bignum_value(1)).odd?.should be_true
|
|
end
|
|
end
|
|
|
|
context "bignum" do
|
|
it "returns true if self is odd and positive" do
|
|
(987279**19).odd?.should be_true
|
|
end
|
|
|
|
it "returns true if self is odd and negative" do
|
|
(-9873389**97).odd?.should be_true
|
|
end
|
|
|
|
it "returns false if self is even and positive" do
|
|
(10000000**10).odd?.should be_false
|
|
end
|
|
|
|
it "returns false if self is even and negative" do
|
|
(-1000000**100).odd?.should be_false
|
|
end
|
|
end
|
|
end
|