barcode_reader_unittest.m

% Script to generate a random barcode with arbitrary, but easy to work with
% matrices.  Matrices are not guaranteed to be really anything beyond that.
% Make sure to sanity check the output!

% Copyright (c) 2019 Michael Robinson
%
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% furnished to do so, subject to the following conditions:
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% IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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% SOFTWARE.

% Desired barcode
bars=sortrows(sort(round(rand(5,2)*4),2)); 
bars=bars-min(bars(:))+1, 

% Construct sequence
mats=barcode_generator_scramble(bars), 

% Verify barcode using quick method
if( any(barcode_reader(mats)(:)-bars(:)) )
  disp('barcode_reader Failed to recover barcode');
  disp(barcode_reader(mats));
end

% Verify using another method that finds isomorphism (generators)
[bars_check,generators,mats1,mats2,comps]=barcode_decompose(mats);
if( any(sortrows(bars_check)(:)-bars(:)) )
  disp('barcode_decompose: Failed to recover barcode');
  disp(bars_check);
end

if ~is_sequence_map(mats1,mats2,comps),
  disp('barcode_decompose produced a non-sequence map');
end

for i=1:length(comps),
  if size(comps{i},1) ~= size(comps{i},2),
    disp('barcode_decompose produced a non-square component');
  end
  if cond(comps{i}) > 1e6,
      disp('barcode_decompose produced a likely-singular component');
      disp(['i = ' num2str(i)])
      disp(comps{i})
  end
end