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ruby--ruby/spec/rubyspec/library/date/infinity_spec.rb
eregon 95e8c48dd3 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
2017-05-07 12:04:49 +00:00

67 lines
1.9 KiB
Ruby

require 'date'
require File.expand_path('../../../spec_helper', __FILE__)
describe "Date::Infinity" do
it "should be able to check whether Infinity is zero" do
i = Date::Infinity.new
i.zero?.should == false
end
it "should be able to check whether Infinity is finite" do
i1 = Date::Infinity.new
i1.finite?.should == false
i2 = Date::Infinity.new(-1)
i2.finite?.should == false
i3 = Date::Infinity.new(0)
i3.finite?.should == false
end
it "should be able to check whether Infinity is infinite" do
i1 = Date::Infinity.new
i1.infinite?.should == 1
i2 = Date::Infinity.new(-1)
i2.infinite?.should == -1
i3 = Date::Infinity.new(0)
i3.infinite?.should == nil
end
it "should be able to check whether Infinity is not a number" do
i1 = Date::Infinity.new
i1.nan?.should == false
i2 = Date::Infinity.new(-1)
i2.nan?.should == false
i3 = Date::Infinity.new(0)
i3.nan?.should == true
end
it "should be able to compare Infinity objects" do
i1 = Date::Infinity.new
i2 = Date::Infinity.new(-1)
i3 = Date::Infinity.new(0)
i4 = Date::Infinity.new
(i4 <=> i1).should == 0
(i3 <=> i1).should == -1
(i2 <=> i1).should == -1
(i3 <=> i2).should == 1
end
it "should be able to return plus Infinity for abs" do
i1 = Date::Infinity.new
i2 = Date::Infinity.new(-1)
i3 = Date::Infinity.new(0)
(i2.abs <=> i1).should == 0
(i3.abs <=> i1).should == 0
end
it "should be able to use -@ and +@ for Date::Infinity" do
(Date::Infinity.new <=> +Date::Infinity.new).should == 0
(Date::Infinity.new(-1) <=> -Date::Infinity.new).should == 0
end
it "should be able to coerce a Date::Infinity object" do
Date::Infinity.new.coerce(1).should == [-1, 1]
Date::Infinity.new(0).coerce(2).should == [0, 0]
Date::Infinity.new(-1).coerce(1.5).should == [1, -1]
end
end