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Diffstat (limited to 'spec/ruby/core/time/plus_spec.rb')
-rw-r--r-- | spec/ruby/core/time/plus_spec.rb | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/spec/ruby/core/time/plus_spec.rb b/spec/ruby/core/time/plus_spec.rb new file mode 100644 index 0000000000..29931f8a87 --- /dev/null +++ b/spec/ruby/core/time/plus_spec.rb @@ -0,0 +1,100 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Time#+" do + it "increments the time by the specified amount" do + (Time.at(0) + 100).should == Time.at(100) + end + + it "is a commutative operator" do + (Time.at(1.1) + 0.9).should == Time.at(0.9) + 1.1 + end + + it "adds a negative Float" do + t = Time.at(100) + -1.3 + t.usec.should == 699999 + t.to_i.should == 98 + end + + it "raises a TypeError if given argument is a coercible String" do + lambda { Time.now + "1" }.should raise_error(TypeError) + lambda { Time.now + "0.1" }.should raise_error(TypeError) + lambda { Time.now + "1/3" }.should raise_error(TypeError) + end + + it "increments the time by the specified amount as rational numbers" do + (Time.at(Rational(11, 10)) + Rational(9, 10)).should == Time.at(2) + end + + it "accepts arguments that can be coerced into Rational" do + (obj = mock_numeric('10')).should_receive(:to_r).and_return(Rational(10)) + (Time.at(100) + obj).should == Time.at(110) + end + + it "raises TypeError on argument that can't be coerced into Rational" do + lambda { Time.now + Object.new }.should raise_error(TypeError) + lambda { Time.now + "stuff" }.should raise_error(TypeError) + end + + it "returns a UTC time if self is UTC" do + (Time.utc(2012) + 10).utc?.should == true + end + + it "returns a non-UTC time if self is non-UTC" do + (Time.local(2012) + 10).utc?.should == false + end + + it "returns a time with the same fixed offset as self" do + (Time.new(2012, 1, 1, 0, 0, 0, 3600) + 10).utc_offset.should == 3600 + end + + it "does not return a subclass instance" do + c = Class.new(Time) + x = c.now + 1 + x.should be_an_instance_of(Time) + end + + it "raises TypeError on Time argument" do + lambda { Time.now + Time.now }.should raise_error(TypeError) + end + + it "raises TypeError on nil argument" do + lambda { Time.now + nil }.should raise_error(TypeError) + end + + #see [ruby-dev:38446] + it "tracks microseconds" do + time = Time.at(0) + time += Rational(123_456, 1_000_000) + time.usec.should == 123_456 + time += Rational(654_321, 1_000_000) + time.usec.should == 777_777 + end + + it "tracks nanoseconds" do + time = Time.at(0) + time += Rational(123_456_789, 1_000_000_000) + time.nsec.should == 123_456_789 + time += Rational(876_543_210, 1_000_000_000) + time.nsec.should == 999_999_999 + end + + it "maintains precision" do + t = Time.at(0) + Rational(8_999_999_999_999_999, 1_000_000_000_000_000) + t.should_not == Time.at(9) + end + + it "maintains microseconds precision" do + time = Time.at(0) + Rational(8_999_999_999_999_999, 1_000_000_000_000_000) + time.usec.should == 999_999 + end + + it "maintains nanoseconds precision" do + time = Time.at(0) + Rational(8_999_999_999_999_999, 1_000_000_000_000_000) + time.nsec.should == 999_999_999 + end + + it "maintains subseconds precision" do + time = Time.at(0) + Rational(8_999_999_999_999_999, 1_000_000_000_000_000) + time.subsec.should == Rational(999_999_999_999_999, 1_000_000_000_000_000) + end +end |