require 'mspec/helpers/datetime'
require 'date'

describe "DateTime#hour" do
  it "returns 0 if no argument is passed" do
    DateTime.new.hour.should == 0
  end

  it "returns the hour given as argument" do
    new_datetime(:hour => 5).hour.should == 5
  end

  it "adds 24 to negative hours" do
    new_datetime(:hour => -10).hour.should == 14
  end

  ruby_version_is "" ... "1.9.3" do
    it "returns the absolute value of a Rational" do
      new_datetime(:hour => 1 + Rational(1,2)).hour.should == 1
    end
  end

  ruby_version_is "1.9.3" do
    it "raises an error for Rational" do
      lambda { new_datetime(:hour => 1 + Rational(1,2)) }.should raise_error(ArgumentError)
    end
  end

  ruby_version_is "" .. "1.9" do
    it "raises an error for Float" do
      lambda { new_datetime :hour => 1.5 }.should raise_error(NoMethodError)
    end
  end

  ruby_version_is "1.9" ... "1.9.3" do
    it "returns the absolute value of a Float" do
      new_datetime(:hour => 1.5).hour.should == 1
    end
  end

  ruby_version_is "1.9.3" do
    it "raises an error for Float" do
      lambda { new_datetime(:hour => 1.5).hour }.should raise_error(ArgumentError)
    end
  end

  ruby_version_is "" ... "1.9.3" do
    it "returns a fraction of a day" do
      new_datetime(:day => 1 + Rational(1,2)).hour.should == 12
    end
  end

  ruby_version_is "1.9.3" do
    it "raises an error for Rational" do
      lambda { new_datetime(:day => 1 + Rational(1,2)) }.should raise_error(ArgumentError)
    end
  end

  it "raises an error, when the hour is smaller than -24" do
    lambda { new_datetime(:hour => -25) }.should raise_error(ArgumentError)
  end

  it "raises an error, when the hour is larger than 24" do
    lambda { new_datetime(:hour => 25) }.should raise_error(ArgumentError)
  end

  it "raises an error for hour fractions smaller than -24" do
    lambda { new_datetime(:hour => -24 - Rational(1,2)) }.should(
      raise_error(ArgumentError))
  end

  it "adds 1 to day, when 24 hours given" do
    d = new_datetime :day => 1, :hour => 24
    d.hour.should == 0
    d.day.should == 2
  end
end