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* Other ruby implementations use the spec/ruby directory. [Misc #13792] [ruby-core:82287] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59979 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
103 lines
3.1 KiB
Ruby
103 lines
3.1 KiB
Ruby
require File.expand_path('../../../spec_helper', __FILE__)
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describe "Time#-" do
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it "decrements the time by the specified amount" do
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(Time.at(100) - 100).should == Time.at(0)
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(Time.at(100) - Time.at(99)).should == 1.0
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end
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it "understands negative subtractions" do
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t = Time.at(100) - -1.3
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t.usec.should == 300000
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t.to_i.should == 101
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end
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#see [ruby-dev:38446]
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it "accepts arguments that can be coerced into Rational" do
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(obj = mock_numeric('10')).should_receive(:to_r).and_return(Rational(10))
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(Time.at(100) - obj).should == Time.at(90)
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end
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it "raises a TypeError if given argument is a coercible String" do
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lambda { Time.now - "1" }.should raise_error(TypeError)
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lambda { Time.now - "0.1" }.should raise_error(TypeError)
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lambda { Time.now - "1/3" }.should raise_error(TypeError)
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end
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it "raises TypeError on argument that can't be coerced" do
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lambda { Time.now - Object.new }.should raise_error(TypeError)
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lambda { Time.now - "stuff" }.should raise_error(TypeError)
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end
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it "raises TypeError on nil argument" do
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lambda { Time.now - nil }.should raise_error(TypeError)
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end
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it "tracks microseconds" do
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time = Time.at(0.777777)
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time -= 0.654321
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time.usec.should == 123456
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time -= 1
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time.usec.should == 123456
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end
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it "tracks microseconds from a Rational" do
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time = Time.at(Rational(777_777, 1_000_000))
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time -= Rational(654_321, 1_000_000)
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time.usec.should == 123_456
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time -= Rational(123_456, 1_000_000)
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time.usec.should == 0
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end
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it "tracks nanoseconds" do
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time = Time.at(Rational(999_999_999, 1_000_000_000))
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time -= Rational(876_543_210, 1_000_000_000)
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time.nsec.should == 123_456_789
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time -= Rational(123_456_789, 1_000_000_000)
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time.nsec.should == 0
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end
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it "maintains precision" do
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time = Time.at(10) - Rational(1_000_000_000_000_001, 1_000_000_000_000_000)
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time.should_not == Time.at(9)
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end
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it "maintains microseconds precision" do
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time = Time.at(10) - Rational(1, 1_000_000)
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time.usec.should == 999_999
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end
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it "maintains nanoseconds precision" do
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time = Time.at(10) - Rational(1, 1_000_000_000)
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time.nsec.should == 999_999_999
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end
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it "maintains subseconds precision" do
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time = Time.at(0) - Rational(1_000_000_000_000_001, 1_000_000_000_000_000)
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time.subsec.should == Rational(999_999_999_999_999, 1_000_000_000_000_000)
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end
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it "returns a UTC time if self is UTC" do
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(Time.utc(2012) - 10).utc?.should == true
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end
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it "returns a non-UTC time if self is non-UTC" do
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(Time.local(2012) - 10).utc?.should == false
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end
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it "returns a time with the same fixed offset as self" do
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(Time.new(2012, 1, 1, 0, 0, 0, 3600) - 10).utc_offset.should == 3600
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end
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it "does not return a subclass instance" do
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c = Class.new(Time)
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x = c.now + 1
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x.should be_an_instance_of(Time)
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end
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it "returns a time with nanoseconds precision between two time objects" do
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time1 = Time.utc(2000, 1, 2, 23, 59, 59, Rational(999999999, 1000))
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time2 = Time.utc(2000, 1, 2, 0, 0, 0, Rational(1, 1000))
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(time1 - time2).should == 86_399.999999998
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end
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end
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