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