require_relative '../../spec_helper'
require 'date'

describe "Date.iso8601" do
  it "parses YYYY-MM-DD into a Date object" do
    d = Date.iso8601("2018-01-01")
    d.should == Date.civil(2018, 1, 1)
  end

  it "parses YYYYMMDD into a Date object" do
    d = Date.iso8601("20180715")
    d.should == Date.civil(2018, 7, 15)
  end

  it "parses a negative Date" do
    d = Date.iso8601("-4712-01-01")
    d.should == Date.civil(-4712, 1, 1)
  end

  it "parses a Symbol into a Date object" do
    d = Date.iso8601(:'2015-10-15')
    d.should == Date.civil(2015, 10, 15)
  end

  it "parses a StringSubclass into a Date object" do
    d = Date.iso8601(Class.new(String).new("-4712-01-01"))
    d.should == Date.civil(-4712, 1, 1)
  end

  it "raises an ArgumentError when passed a Symbol without a valid Date" do
    -> { Date.iso8601(:test) }.should raise_error(ArgumentError)
  end

  it "raises a TypeError when passed an Object" do
    -> { Date.iso8601(Object.new) }.should raise_error(TypeError)
  end
end
