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require 'test_helper'
require 'barby/barcode/upc_supplemental'
class UpcSupplementalTest < Barby::TestCase
it 'should be valid with 2 or 5 digits' do
assert UPCSupplemental.new('12345').valid?
assert UPCSupplemental.new('12').valid?
end
it 'should not be valid with any number of digits other than 2 or 5' do
refute UPCSupplemental.new('1234').valid?
refute UPCSupplemental.new('123').valid?
refute UPCSupplemental.new('1').valid?
refute UPCSupplemental.new('123456').valid?
refute UPCSupplemental.new('123456789012').valid?
end
it 'should not be valid with non-digit characters' do
refute UPCSupplemental.new('abcde').valid?
refute UPCSupplemental.new('ABC').valid?
refute UPCSupplemental.new('1234e').valid?
refute UPCSupplemental.new('!2345').valid?
refute UPCSupplemental.new('ab').valid?
refute UPCSupplemental.new('1b').valid?
refute UPCSupplemental.new('a1').valid?
end
describe 'checksum for 5 digits' do
it 'should have the expected odd_digits' do
UPCSupplemental.new('51234').odd_digits.must_equal [4,2,5]
UPCSupplemental.new('54321').odd_digits.must_equal [1,3,5]
UPCSupplemental.new('99990').odd_digits.must_equal [0,9,9]
end
it 'should have the expected even_digits' do
UPCSupplemental.new('51234').even_digits.must_equal [3,1]
UPCSupplemental.new('54321').even_digits.must_equal [2,4]
UPCSupplemental.new('99990').even_digits.must_equal [9,9]
end
it 'should have the expected odd and even sums' do
UPCSupplemental.new('51234').odd_sum.must_equal 33
UPCSupplemental.new('54321').odd_sum.must_equal 27
UPCSupplemental.new('99990').odd_sum.must_equal 54
UPCSupplemental.new('51234').even_sum.must_equal 36
UPCSupplemental.new('54321').even_sum.must_equal 54
UPCSupplemental.new('99990').even_sum.must_equal 162
end
it 'should have the expected checksum' do
UPCSupplemental.new('51234').checksum.must_equal 9
UPCSupplemental.new('54321').checksum.must_equal 1
UPCSupplemental.new('99990').checksum.must_equal 6
end
end
describe 'checksum for 2 digits' do
it 'should have the expected checksum' do
UPCSupplemental.new('51').checksum.must_equal 3
UPCSupplemental.new('21').checksum.must_equal 1
UPCSupplemental.new('99').checksum.must_equal 3
end
end
describe 'encoding' do
before do
@data = '51234'
@code = UPCSupplemental.new(@data)
end
it 'should have the expected encoding' do
# START 5 1 2 3 4
UPCSupplemental.new('51234').encoding.must_equal '1011 0110001 01 0011001 01 0011011 01 0111101 01 0011101'.tr(' ', '')
# 9 9 9 9 0
UPCSupplemental.new('99990').encoding.must_equal '1011 0001011 01 0001011 01 0001011 01 0010111 01 0100111'.tr(' ', '')
# START 5 1
UPCSupplemental.new('51').encoding.must_equal '1011 0111001 01 0110011'.tr(' ', '')
# 2 2
UPCSupplemental.new('22').encoding.must_equal '1011 0011011 01 0010011'.tr(' ', '')
end
it 'should be able to change its data' do
prev_encoding = @code.encoding
@code.data = '99990'
@code.encoding.wont_equal prev_encoding
# 9 9 9 9 0
@code.encoding.must_equal '1011 0001011 01 0001011 01 0001011 01 0010111 01 0100111'.tr(' ', '')
prev_encoding = @code.encoding
@code.data = '22'
@code.encoding.wont_equal prev_encoding
# 2 2
@code.encoding.must_equal '1011 0011011 01 0010011'.tr(' ', '')
end
end
end
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