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# Copyright (C) 2014 Harald Eilertsen
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
module SalesReporter
class Sale
attr_reader :date, :amount, :quantity
def initialize(date_, amount, quantity)
@date = sanitize_date(date_)
raise TypeError('sanitize failed') unless @date.is_a? Date
@amount = amount
@quantity = quantity
end
private
def sanitize_date(d)
case d.class.to_s
when "String"
return Date.parse(d)
when "Date"
return d
else
raise TypeError.new('Expected date argument to be of type Date or String')
end
end
end
end
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