% UTP_AO_noisegen1D a set of UTPs for the ao/noisegen1D method
%
% L Ferraioli 16-02-09
%
% $Id: utp_ao_noisegen1D.m,v 1.13 2010/05/03 18:07:42 luigi Exp $
%

% <MethodDescription>
%
% The noisegen1D method of the ao class computes the noisegen1Dolute value of the y
% and/or x data.
%
% </MethodDescription>

function results = utp_ao_noisegen1D(varargin)

  % Check the inputs
  if nargin == 0

    % Some keywords
    class   = 'ao';
    mthd    = 'noisegen1D';

    results = [];
    disp('******************************************************');
    disp(['****  Running UTPs for ' class '/' mthd]);
    disp('******************************************************');

    % Test AOs
%     [at1,at2,at3,at4,at5,at6,atvec,atmat] = get_test_objects_ao;
    [PSD,a1,a2,a3,a4,a5,av,am,plstd,plstd2] = get_test_obj_ao_noisegen1D();
    
    % Exception list for the UTPs:
    [ple1,ple2,ple3,ple4,ple5,ple6] = get_test_ples();
    
    % add useful params to standard exceptions
    ple3 = plist('Exceptions', {'history', 'created', 'UUID', 'param/desc', 'name', 'procinfo'});
    
%     % ---- Building fsdata model objects
%     pl_mod1 = plist('fsfcn', '0.01./(0.01+f)', 'f1', 1e-6, 'f2', 5, 'nf', 100);
%     mod1 = ao(pl_mod1);
%     % ---- Building white noise test data
%     fs = 10;
%     a1 = ao(plist('tsfcn', 'randn(size(t))', 'fs', fs, 'nsecs', 100));
%     a2 = ao(plist('tsfcn', 'randn(size(t))', 'fs', fs, 'nsecs', 100));
%     a3 = ao(plist('tsfcn', 'randn(size(t))', 'fs', fs, 'nsecs', 100));
%     a4 = ao(plist('tsfcn', 'randn(size(t))', 'fs', fs, 'nsecs', 100));
%     a5 = ao(plist('tsfcn', 'randn(size(t)).''', 'fs', fs, 'nsecs', 100));       
%     av = [a1 a2 a3];
%     am = [a1 a2; a3 a4];
%     % ---- Building standard plist
%     plstd = plist(...
%       'model', mod1, ...
%       'MaxIter', 30, ...
%       'PoleType', 2, ...
%       'MinOrder', 10, ...
%       'MaxOrder', 20, ...
%       'Weights', 2, ...
%       'Plot', false,...
%       'Disp', false,...
%       'RMSEVar', 5,...
%       'FitTolerance', 2);

    % Run the tests
    results = [results utp_01];    % getInfo call
    results = [results utp_02];    % Vector input, set 'Default'
    results = [results utp_03];    % Matrix input, set 'Default'
    results = [results utp_04];    % List input, set 'Default'
    results = [results utp_05];    % Test with mixed input, set 'Default'
    results = [results utp_06];    % Test history is working, set 'Default'
    results = [results utp_07];    % Test the modify call works, set 'Default'
    results = [results utp_08];    % Test input data shape == output data shape, set 'Default'
    results = [results utp_09];    % Test output of the data, set 'Default'
    results = [results utp_10];    % Test history is working, set 'filter'
    results = [results utp_11];    % Test the modify call works, set 'filter'
    results = [results utp_12];    % Test output of the data, set 'Filter'

    disp('Done.');
    disp('******************************************************');

  elseif nargin == 1 % Check for UTP functions
    if strcmp(varargin{1}, 'isutp')
      results = 1;
    else
      results = 0;
    end
  else
    error('### Incorrect inputs')
  end

  %% UTP_01

  % <TestDescription>
  %
  % Tests that the getInfo call works for this method.
  %
  % </TestDescription>
  function result = utp_01


    % <SyntaxDescription>
    %
    % Test that the getInfo call works for no sets, all sets, and each set
    % individually.
    %
    % </SyntaxDescription>

    try
      % <SyntaxCode>
      % Call for no sets
      io(1) = eval([class '.getInfo(''' mthd ''', ''None'')']);
      % Call for all sets
      io(2) = eval([class '.getInfo(''' mthd ''')']);
      % Call for each set
      for kk=1:numel(io(2).sets)
        io(kk+2) = eval([class '.getInfo(''' mthd ''', ''' io(2).sets{kk} ''')']);
      end
      % </SyntaxCode>
      stest = true;
    catch err
      disp(err.message)
      stest = false;
    end

    % <AlgoDescription>
    %
    % 1) Check that getInfo call returned an minfo object in all cases.
    % 2) Check that all plists have the correct parameters.
    %
    % </AlgoDescription>

    atest = true;
    if stest
      % <AlgoCode>
      % check we have minfo objects
      if isa(io, 'minfo')
        %%% SET 'None'
        if ~isempty(io(1).sets), atest = false; end
        if ~isempty(io(1).plists), atest = false; end
        %%% Check all Sets
        if ~any(strcmpi(io(2).sets, 'Default')), atest = false; end
        if numel(io(2).plists) ~= numel(io(2).sets), atest = false; end
        %%%%%%%%%%   SET 'Default'
        if io(3).plists.nparams ~= 11, atest = false; end
        % Check key
        if ~io(3).plists.isparam('yunits'), atest = false; end
        if ~io(3).plists.isparam('model'), atest = false; end
        if ~io(3).plists.isparam('maxiter'), atest = false; end
        if ~io(3).plists.isparam('poletype'), atest = false; end
        if ~io(3).plists.isparam('minorder'), atest = false; end
        if ~io(3).plists.isparam('maxorder'), atest = false; end
        if ~io(3).plists.isparam('weights'), atest = false; end
        if ~io(3).plists.isparam('plot'), atest = false; end
        if ~io(3).plists.isparam('disp'), atest = false; end
        if ~io(3).plists.isparam('msevartol'), atest = false; end
        if ~io(3).plists.isparam('fittol'), atest = false; end
        % Check default value
        if ~isequal(io(3).plists.find('yunits'), ''), atest = false; end
        if ~isEmptyDouble(io(3).plists.find('model')), atest = false; end
        if ~isequal(io(3).plists.find('maxiter'), 30), atest = false; end
        if ~isequal(io(3).plists.find('poletype'), 3), atest = false; end
        if ~isequal(io(3).plists.find('minorder'), 2), atest = false; end
        if ~isequal(io(3).plists.find('maxorder'), 25), atest = false; end
        if ~isequal(io(3).plists.find('weights'), 3), atest = false; end
        if ~isequal(io(3).plists.find('plot'), false), atest = false; end
        if ~isequal(io(3).plists.find('disp'), false), atest = false; end
        if ~isequal(io(3).plists.find('msevartol'), .01), atest = false; end
        if ~isequal(io(3).plists.find('fittol'), .01), atest = false; end
        % Check options
        if ~isequal(io(3).plists.getOptionsForParam('yunits'), {[]}), atest = false; end
        if ~isequal(io(3).plists.getOptionsForParam('model'), {[]}), atest = false; end
        if ~isequal(io(3).plists.getOptionsForParam('maxiter'), {30}), atest = false; end
        if ~isequal(io(3).plists.getOptionsForParam('poletype'), {1 2 3}), atest = false; end
        if ~isequal(io(3).plists.getOptionsForParam('minorder'), {2}), atest = false; end
        if ~isequal(io(3).plists.getOptionsForParam('maxorder'), {25}), atest = false; end
        if ~isequal(io(3).plists.getOptionsForParam('weights'), {3}), atest = false; end
        if ~isequal(io(3).plists.getOptionsForParam('plot'), {false, true}), atest = false; end
        if ~isequal(io(3).plists.getOptionsForParam('disp'), {false, true}), atest = false; end
        if ~isequal(io(3).plists.getOptionsForParam('msevartol'), {.01}), atest = false; end
        if ~isequal(io(3).plists.getOptionsForParam('fittol'), {.01}), atest = false; end
        
        %%%%%%%%%%   SET 'Filter'
        if io(4).plists.nparams ~= 12, atest = false; end
        % Check key
        if ~io(4).plists.isparam('fs'), atest = false; end
        if ~io(4).plists.isparam('Iunits'), atest = false; end
        if ~io(4).plists.isparam('Ounits'), atest = false; end
        if ~io(4).plists.isparam('maxiter'), atest = false; end
        if ~io(4).plists.isparam('poletype'), atest = false; end
        if ~io(4).plists.isparam('minorder'), atest = false; end
        if ~io(4).plists.isparam('maxorder'), atest = false; end
        if ~io(4).plists.isparam('weights'), atest = false; end
        if ~io(4).plists.isparam('plot'), atest = false; end
        if ~io(4).plists.isparam('disp'), atest = false; end
        if ~io(4).plists.isparam('msevartol'), atest = false; end
        if ~io(4).plists.isparam('fittol'), atest = false; end
        % Check default value
        if ~isequal(io(4).plists.find('fs'), 1), atest = false; end
        if ~isequal(io(4).plists.find('Iunits'), ''), atest = false; end
        if ~isequal(io(4).plists.find('Ounits'), ''), atest = false; end
        if ~isequal(io(4).plists.find('maxiter'), 30), atest = false; end
        if ~isequal(io(4).plists.find('poletype'), 3), atest = false; end
        if ~isequal(io(4).plists.find('minorder'), 2), atest = false; end
        if ~isequal(io(4).plists.find('maxorder'), 25), atest = false; end
        if ~isequal(io(4).plists.find('weights'), 3), atest = false; end
        if ~isequal(io(4).plists.find('plot'), false), atest = false; end
        if ~isequal(io(4).plists.find('disp'), false), atest = false; end
        if ~isequal(io(4).plists.find('msevartol'), .01), atest = false; end
        if ~isequal(io(4).plists.find('fittol'), .01), atest = false; end
        % Check options
        if ~isequal(io(4).plists.getOptionsForParam('fs'), {1}), atest = false; end
        if ~isequal(io(4).plists.getOptionsForParam('Iunits'), {[]}), atest = false; end
        if ~isequal(io(4).plists.getOptionsForParam('Ounits'), {[]}), atest = false; end
        if ~isequal(io(4).plists.getOptionsForParam('maxiter'), {30}), atest = false; end
        if ~isequal(io(4).plists.getOptionsForParam('poletype'), {1 2 3}), atest = false; end
        if ~isequal(io(4).plists.getOptionsForParam('minorder'), {2}), atest = false; end
        if ~isequal(io(4).plists.getOptionsForParam('maxorder'), {25}), atest = false; end
        if ~isequal(io(4).plists.getOptionsForParam('weights'), {3}), atest = false; end
        if ~isequal(io(4).plists.getOptionsForParam('plot'), {false, true}), atest = false; end
        if ~isequal(io(4).plists.getOptionsForParam('disp'), {false, true}), atest = false; end
        if ~isequal(io(4).plists.getOptionsForParam('msevartol'), {.01}), atest = false; end
        if ~isequal(io(4).plists.getOptionsForParam('fittol'), {.01}), atest = false; end
      end
      % </AlgoCode>
    else
      atest = false;
    end

    % Return a result structure
    result = utp_prepare_result(atest, stest, dbstack, mfilename);
  end % END UTP_01

  %% UTP_02

  % <TestDescription>
  %
  % Tests that the noisegen1D method works with a vector of AOs as input.
  %
  % </TestDescription>
  function result = utp_02

    % <SyntaxDescription>
    %
    % Test that the noisegen1D method works for a vector of AOs as input.
    %
    % </SyntaxDescription>

    try
      % <SyntaxCode>
      out = noisegen1D(av, plstd);
      % </SyntaxCode>
      stest = true;
    catch err
     disp(err.message)
     stest = false;
    end

    % <AlgoDescription>
    %
    % 1) Check that the number of elements in 'out' is the same as in 'av'
    % 2) Check that each output AO contains the correct data.
    %
    % </AlgoDescription>

    atest = true;
    if stest
      % <AlgoCode>
      % Check we have the correct number of outputs
      if ~isequal(size(out), size(av)), atest = false; end
      % Check each output against the absolute value of the input
      for kk=1:numel(out)
        % Check the whiten ao(tsdata) objects
        if isa(out(kk).data, 'tsdata')
          used_filt = out(kk).procinfo.find('filter');
          obj = av(kk).filter(used_filt);
          if ~eq(out(kk), obj, ple3), atest = false; end
        else
          % Check the other objects (they must be the same)
          if ~eq(out(kk), av(kk), ple1), atest = false; end
        end
      end
      % </AlgoCode>
    else
      atest = false;
    end

    % Return a result structure
    result = utp_prepare_result(atest, stest, dbstack, mfilename);
  end % END UTP_02

  %% UTP_03

  % <TestDescription>
  %
  % Tests that the noisegen1D method works with a matrix of AOs as input.
  %
  % </TestDescription>
  function result = utp_03

    % <SyntaxDescription>
    %
    % Test that the noisegen1D method works for a matrix of AOs as input.
    %
    % </SyntaxDescription>

    try
      % <SyntaxCode>
      out = noisegen1D(am, plstd);
      % </SyntaxCode>
      stest = true;
    catch err
      disp(err.message)
      stest = false;
    end

    % <AlgoDescription>
    %
    % 1) Check that the number of elements in 'out' is the same as in 'atmat'
    % 2) Check that each output AO contains the correct data.
    %
    % </AlgoDescription>

    atest = true;
    if stest
      % <AlgoCode>
      % Check we have the correct number of outputs
      if ~isequal(size(out), size(am)), atest = false; end
      % Check each output against the absolute value of the input
      for kk=1:numel(out)
        % Check the whiten ao(tsdata) objects
        if isa(out(kk).data, 'tsdata')
          used_filt = out(kk).procinfo.find('filter');
          obj = am(kk).filter(used_filt);
          if ~eq(out(kk), obj, ple3), atest = false; end
        else
          % Check the other objects (they must be the same)
          if ~eq(out(kk), am(kk), ple1), atest = false; end
        end
      end
      % </AlgoCode>
    else
      atest = false;
    end

    % Return a result structure
    result = utp_prepare_result(atest, stest, dbstack, mfilename);
  end % END UTP_03

  %% UTP_04

  % <TestDescription>
  %
  % Tests that the noisegen1D method works with a list of AOs as input.
  %
  % </TestDescription>
  function result = utp_04

    % <SyntaxDescription>
    %
    % Test that the noisegen1D method works for a list of AOs as input.
    %
    % </SyntaxDescription>

    try
      % <SyntaxCode>
      out = noisegen1D(a1,a2,a3,plstd);
      % </SyntaxCode>
      stest = true;
    catch err
      disp(err.message)
      stest = false;
    end

    % <AlgoDescription>
    %
    % 1) Check that the number of elements in 'out' is the same as in
    %    input.
    % 2) Check that each output AO contains the correct data.
    %
    % </AlgoDescription>

    atest = true;
    aoin = [a1,a2,a3];
    if stest
      % <AlgoCode>
      % Check we have the correct number of outputs
      if ~isequal(size(out), size(aoin)), atest = false; end
      % Check each output against the absolute value of the input
      for kk=1:numel(out)
        % Check the whiten ao(tsdata) objects
        if isa(out(kk).data, 'tsdata')
          used_filt = out(kk).procinfo.find('filter');
          obj = aoin(kk).filter(used_filt);
          if ~eq(out(kk), obj, ple3), atest = false; end
        else
          % Check the other objects (they must be the same)
          if ~eq(out(kk), aoin(kk), ple1), atest = false; end
        end
      end
      % </AlgoCode>
    else
      atest = false;
    end

    % Return a result structure
    result = utp_prepare_result(atest, stest, dbstack, mfilename);
  end % END UTP_04

  %% UTP_05

  % <TestDescription>
  %
  % Tests that the noisegen1D method works with a mix of different shaped AOs as
  % input.
  %
  % </TestDescription>
  function result = utp_05

    % <SyntaxDescription>
    %
    % Test that the noisegen1D method works with an input of matrices and vectors
    % and single AOs.
    %
    % </SyntaxDescription>

    try
      % <SyntaxCode>
      out = noisegen1D(a5,[a1 a3],[a1 a2; a3 a4],plstd);
      % </SyntaxCode>
      stest = true;
    catch err
      disp(err.message)
      stest = false;
    end

    % <AlgoDescription>
    %
    % 1) Check that the number of elements in 'out' is the same as in
    %    input.
    % 2) Check that each output AO contains the correct data.
    %
    % </AlgoDescription>

    atest = true;
    aoin  = [a5,reshape([a1 a3],1,[]),reshape([a1 a2; a3 a4],1,[])];
    if stest
      % <AlgoCode>
      % Check we have the correct number of outputs
      if ~isequal(size(out), size(aoin)), atest = false; end
      % Check each output against the absolute value of the input
      for kk=1:numel(out)
        % Check the whiten ao(tsdata) objects
        if isa(out(kk).data, 'tsdata')
          used_filt = out(kk).procinfo.find('filter');
          obj = aoin(kk).filter(used_filt);
          if ~eq(out(kk), obj, ple3), atest = false; end
        else
          % Check the other objects (they must be the same)
          if ~eq(out(kk), aoin(kk), ple1), atest = false; end
        end
      end
      % </AlgoCode>
    else
      atest = false;
    end

    % Return a result structure
    result = utp_prepare_result(atest, stest, dbstack, mfilename);
  end % END UTP_05

  %% UTP_06

  % <TestDescription>
  %
  % Tests that the noisegen1D method properly applies history.
  %
  % </TestDescription>
  function result = utp_06

    % <SyntaxDescription>
    %
    % Test that the result of applying the noisegen1D method can be processed back.
    %
    % </SyntaxDescription>

    try
      % <SyntaxCode>
      out  = noisegen1D(a1,plstd);
      mout = rebuild(out);
      % </SyntaxCode>
      stest = true;
    catch err
      disp(err.message)
      stest = false;
    end

    % <AlgoDescription>
    %
    % 1) Check that the last entry in the history of 'out' corresponds to
    %    'noisegen1D'.
    % 2) Check that the re-built object is the same object as the input.
    %
    % </AlgoDescription>

    atest = true;
    if stest
      % <AlgoCode>
      % Check the last step in the history of 'out'
      if ~strcmp(out.hist.methodInfo.mname, 'noisegen1D'), atest = false; end
      % Check the re-built object
      if ~eq(mout, out, ple2), atest = false; end
      % </AlgoCode>
    else
      atest = false;
    end

    % Return a result structure
    result = utp_prepare_result(atest, stest, dbstack, mfilename);
  end % END UTP_06

  %% UTP_07

  % <TestDescription>
  %
  % Tests that the noisegen1D method can modify the input AO.
  %
  % </TestDescription>
  function result = utp_07

    % <SyntaxDescription>
    %
    % Test that the noisegen1D method can modify the input AO by calling with no
    % output and that the method doesn't change the input of the function
    % notation (with a equal sign).
    %
    % </SyntaxDescription>

    try
      % <SyntaxCode>
      amodi = ao(a1);
      aeq   = ao(a1);
      out = aeq.noisegen1D(plstd);
      amodi.noisegen1D(plstd);
      % </SyntaxCode>
      stest = true;
    catch err
      disp(err.message)
      stest = false;
    end

    % <AlgoDescription>
    %
    % 1) Check that 'out' and 'aeq' are now different.
    % 2) Check that 'aeq' is not changed
    % 3) Check that the modified input is changed
    %
    % </AlgoDescription>

    atest = true;
    if stest
      % <AlgoCode>
      % Check that 'out' and 'aeq' are now different.
      if eq(out, aeq, ple2), atest = false; end
      % Check that 'aeq' is not changed
      if ~eq(aeq, ao(a1), ple1), atest = false; end
      % Check that the modified input is changed
      used_filt = amodi.procinfo.find('filter');
      ref = a1.filter(used_filt);
      if ~eq(ref, amodi, ple3), atest = false; end
      % </AlgoCode>
    else
      atest = false;
    end

    % Return a result structure
    result = utp_prepare_result(atest, stest, dbstack, mfilename);
  end % END UTP_07

  %% UTP_08

  % <TestDescription>
  %
  % Test the shape of the output.
  %
  % </TestDescription>
  function result = utp_08

    % <SyntaxDescription>
    %
    % Test that the noisegen1D method keeps the data shape of the input object. The
    % input AO must be an AO with row data and an AO with column data.
    %
    % </SyntaxDescription>

    try
      % <SyntaxCode>
      out1 = noisegen1D(a4,plstd);
      out2 = noisegen1D(a5,plstd);
      % </SyntaxCode>
      stest = true;
    catch err
      disp(err.message)
      stest = false;
    end

    % <AlgoDescription>
    %
    % 1) Check that the shape of the data doesn't change.
    %
    % </AlgoDescription>

    atest = true;
    if stest
      % <AlgoCode>
      % Check the shape of the output data
      if size(out1.data.x) ~= size(a4.data.x), atest = false; end
      if size(out1.data.y) ~= size(a4.data.y), atest = false; end
      if size(out2.data.x) ~= size(a5.data.x), atest = false; end
      if size(out2.data.y) ~= size(a5.data.y), atest = false; end
      % </AlgoCode>
    else
      atest = false;
    end

    % Return a result structure
    result = utp_prepare_result(atest, stest, dbstack, mfilename);
  end % END UTP_08

  %% UTP_09

  % <TestDescription>
  %
  % Check that the noisegen1D method pass back the output objects to a list of
  % output variables or to a single variable.
  %
  % </TestDescription>
  function result = utp_09

    % <SyntaxDescription>
    %
    % Call the method with a list of output variables and with a single output
    % variable. Additionaly check that the rebuild method works on the output.
    %
    % </SyntaxDescription>

    try
      % <SyntaxCode>
      [o1, o2] = noisegen1D(a1, a2, plstd);
      o3  = noisegen1D(a1, a2, plstd);
      mout1 = rebuild(o1);
      mout2 = rebuild(o2);
      o31 = o3.index(1);
      o32 = o3.index(2);
      mout31 = rebuild(o31);
      mout32 = rebuild(o32);
      % </SyntaxCode>
      stest = true;
    catch err
      disp(err.message)
      stest = false;
    end

    % <AlgoDescription>
    %
    % 1) Check that the output contains the right number of objects
    % 2) Check that the 'rebuild' method produces the same object as 'out'.
    %
    % </AlgoDescription>

    atest = true;
    if stest
      % <AlgoCode>
      % Check the number of outputs
      if numel(o1) ~=1, atest = false; end
      if numel(o2) ~=1, atest = false; end
      if numel(o3) ~=2, atest = false; end
      % Check the rebuilding of the object
      if ~eq(o1, mout1, ple2), atest = false; end
      if ~eq(o2, mout2, ple2), atest = false; end
      if ~eq(o31, mout31, ple2), atest = false; end
      if ~eq(o32, mout32, ple2), atest = false; end
      % </AlgoCode>
    else
      atest = false;
    end

    % Return a result structure
    result = utp_prepare_result(atest, stest, dbstack, mfilename);
  end % END UTP_09

%% UTP_10

  % <TestDescription>
  %
  % Tests that the noisegen1D method properly applies history for set filter.
  %
  % </TestDescription>
  function result = utp_10

    % <SyntaxDescription>
    %
    % Test that the result of applying the noisegen1D method can be processed back.
    %
    % </SyntaxDescription>

    try
      % <SyntaxCode>
      out  = noisegen1D(PSD,plstd2);
      mout = rebuild(out);
      % </SyntaxCode>
      stest = true;
    catch err
      disp(err.message)
      stest = false;
    end

    % <AlgoDescription>
    %
    % 1) Check that the last entry in the history of 'out' corresponds to
    %    'noisegen1D'.
    % 2) Check that the re-built object is the same object as the input.
    %
    % </AlgoDescription>

    atest = true;
    if stest
      % <AlgoCode>
      % Check the last step in the history of 'out'
      if ~strcmp(out.hist.methodInfo.mname, 'noisegen1D'), atest = false; end
      % Check the re-built object
      if ~eq(mout, out, ple2), atest = false; end
      % </AlgoCode>
    else
      atest = false;
    end

    % Return a result structure
    result = utp_prepare_result(atest, stest, dbstack, mfilename);
  end % END UTP_10

%% UTP_10

  % <TestDescription>
  %
  % Tests that the noisegen1D method can modify the input AO for set 'filter'.
  %
  % </TestDescription>
  function result = utp_11

    % <SyntaxDescription>
    %
    % Test that the noisegen1D method can modify the input AO by calling with no
    % output and that the method doesn't change the input of the function
    % notation (with a equal sign).
    %
    % </SyntaxDescription>

    try
      % <SyntaxCode>
      amodi = ao(PSD);
      aeq   = ao(PSD);
      out = aeq.noisegen1D(plstd2);
      amodi.noisegen1D(plstd2);
      % </SyntaxCode>
      stest = true;
    catch err
      disp(err.message)
      stest = false;
    end

    % <AlgoDescription>
    %
    % 1) Check that 'out' and 'aeq' are now different.
    % 2) Check that 'aeq' is not changed
    %
    % </AlgoDescription>

    atest = true;
    if stest
      % <AlgoCode>
      % Check that 'out' and 'aeq' are now different.
      if eq(out, aeq, ple2), atest = false; end
      % Check that 'aeq' is not changed
      if ~eq(aeq, ao(PSD), ple1), atest = false; end
      % </AlgoCode>
    else
      atest = false;
    end

    % Return a result structure
    result = utp_prepare_result(atest, stest, dbstack, mfilename);
  end % END UTP_11

%% UTP_12

  % <TestDescription>
  %
  % Check that the noisegen1D method pass back the output objects to a list of
  % output variables or to a single variable.
  %
  % </TestDescription>
  function result = utp_12

    % <SyntaxDescription>
    %
    % Call the method with a list of output variables and with a single output
    % variable. Additionaly check that the rebuild method works on the output.
    %
    % </SyntaxDescription>

    try
      % <SyntaxCode>
      [o1, o2] = noisegen1D(PSD, PSD, plstd2);
      o3  = noisegen1D(PSD, PSD, plstd2);
      mout1 = rebuild(o1);
      mout2 = rebuild(o2);
      o31 = o3.index(1);
      o32 = o3.index(2);
      mout31 = rebuild(o31);
      mout32 = rebuild(o32);
      % </SyntaxCode>
      stest = true;
    catch err
      disp(err.message)
      stest = false;
    end

    % <AlgoDescription>
    %
    % 1) Check that the output contains the right number of objects
    % 2) Check that the 'rebuild' method produces the same object as 'out'.
    %
    % </AlgoDescription>

    atest = true;
    if stest
      % <AlgoCode>
      % Check the number of outputs
      if numel(o1) ~=1, atest = false; end
      if numel(o2) ~=1, atest = false; end
      if numel(o3) ~=2, atest = false; end
      % Check the rebuilding of the object
      if ~eq(o1, mout1, ple2), atest = false; end
      if ~eq(o2, mout2, ple2), atest = false; end
      if ~eq(o31, mout31, ple2), atest = false; end
      if ~eq(o32, mout32, ple2), atest = false; end
      % </AlgoCode>
    else
      atest = false;
    end

    % Return a result structure
    result = utp_prepare_result(atest, stest, dbstack, mfilename);
  end % END UTP_12
  

end