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require 'test_helper'
require 'barby/barcode/qr_code'
class QrCodeTest < Barby::TestCase
before do
@data = 'Ereshkigal'
@code = QrCode.new(@data)
end
it "should have the expected data" do
@code.data.must_equal @data
end
it "should have the expected encoding" do
# Should be an array of strings, where each string represents a "line"
@code.encoding.must_equal(rqrcode(@code).modules.map do |line|
line.inject(''){|s,m| s << (m ? '1' : '0') }
end)
end
it "should be able to change its data and output a different encoding" do
@code.data = 'hades'
@code.data.must_equal 'hades'
@code.encoding.must_equal(rqrcode(@code).modules.map do |line|
line.inject(''){|s,m| s << (m ? '1' : '0') }
end)
end
it "should have a 'level' accessor" do
@code.must_respond_to :level
@code.must_respond_to :level=
end
it "should set size according to size of data" do
QrCode.new('1'*15, :level => :l).size.must_equal 1
QrCode.new('1'*15, :level => :m).size.must_equal 2
QrCode.new('1'*15, :level => :q).size.must_equal 2
QrCode.new('1'*15, :level => :h).size.must_equal 3
QrCode.new('1'*30, :level => :l).size.must_equal 2
QrCode.new('1'*30, :level => :m).size.must_equal 3
QrCode.new('1'*30, :level => :q).size.must_equal 3
QrCode.new('1'*30, :level => :h).size.must_equal 4
QrCode.new('1'*270, :level => :l).size.must_equal 10
end
it "should allow size to be set manually" do
code = QrCode.new('1'*15, :level => :l, :size => 2)
code.size.must_equal 2
code.encoding.must_equal(rqrcode(code).modules.map do |line|
line.inject(''){|s,m| s << (m ? '1' : '0') }
end)
end
it "should raise ArgumentError when data too large" do
assert QrCode.new('1'*2953, :level => :l)
lambda{ QrCode.new('1'*2954, :level => :l) }.must_raise ArgumentError
end
it "should return the original data on to_s" do
@code.to_s.must_equal 'Ereshkigal'
end
it "should include at most 20 characters on to_s" do
QrCode.new('123456789012345678901234567890').to_s.must_equal '12345678901234567890'
end
private
def rqrcode(code)
RQRCode::QRCode.new(code.data, :level => code.level, :size => code.size)
end
end
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