% UTP_AO_ATAN2 a set of UTPs for the ao/atan2 method
%
% M Hewitson 06-08-08
%
% $Id: utp_ao_atan2.m,v 1.3 2009/07/20 15:14:11 ingo Exp $
%

% <MethodDescription>
%
% The atan2 method of the ao class computes the the four quadrant
% arctangent of the real parts of the elements of X and Y.
%
% </MethodDescription>

function results = utp_ao_atan2(varargin)

  % Check the inputs
  if nargin == 0

    % Some keywords
    class   = 'ao';
    mthd    = 'atan2';

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

    % Test AOs
    at1 = ao(1:30, randn(30,1), 1);
    at2 = ao(1:30, randn(30,1), 1);
    
    % Exception list for the UTPs:
    [ple1,ple2,ple3,ple4,ple5,ple6] = get_test_ples();

    % Run the tests
    results = [results utp_01];    % getInfo call
    results = [results utp_02];    % Vector input
    results = [results utp_03];    % Test history is working
    results = [results utp_04];    % Test the modify call works

    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 ~= 0, atest = false; end
        % Check key
        % Check default value
        % Check options
      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 atan2 method works only with two AOs as input..
  %
  % </TestDescription>
  function result = utp_02

    % <SyntaxDescription>
    %
    % Tests that the atan2 method works only with two AOs as input..
    %
    % </SyntaxDescription>

    try
      % <SyntaxCode>
      out = atan2(at1, at2);
      % </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 'atvec'
    % 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 numel(out) ~= 1, atest = false; end
      % Check the output data
      if ~isequal(out.y, atan2(at1.y, at2.y)), atest = false; 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 atan2 method properly applies history.
  %
  % </TestDescription>
  function result = utp_03

    % <SyntaxDescription>
    %
    % Test that the result of applying the atan2 method can be processed
    % back.
    %
    % </SyntaxDescription>

    try
      % <SyntaxCode>
      out  = atan2(at1,at2);
      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
    %    'atan2'.
    % 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, 'atan2'), 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_03

  %% UTP_04

  % <TestDescription>
  %
  % Tests that the atan2 method can not be used as a modifier method.
  %
  % </TestDescription>
  function result = utp_04

    % <SyntaxDescription>
    %
    % Tests that the atan2 method can not be used as a modifier method. The
    % command should fail.
    %
    % </SyntaxDescription>

    try
      % <SyntaxCode>
      % copy at1 to work with
      amodi = ao(at1);
      aeq   = ao(at1);
      out = aeq.atan2(at2);
      amodi.atan2(at2);
      stest = false;
      % </SyntaxCode>
    catch
      stest = true;
    end

    % <AlgoDescription>
    %
    % 1) Nothing to test.
    %
    % </AlgoDescription>

    atest = true;
    if stest
      % <AlgoCode>
      % </AlgoCode>
    else
      atest = false;
    end

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

end
