## Copyright (C) 2013-2018 Carnë Draug
## Copyright (C) 2016-2018 Carlo de Falco
##
## This file is part of Octave.
##
## Octave is free software: you can redistribute it and/or modify it
## under the terms of the GNU General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## Octave is distributed in the hope that it will be useful, but
## WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
## GNU General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with Octave; see the file COPYING.  If not, see
## <https://www.gnu.org/licenses/>.

## -*- texinfo -*-
## @deftypefn  {} {} validateattributes (@var{A}, @var{classes}, @var{attributes})
## @deftypefnx {} {} validateattributes (@var{A}, @var{classes}, @var{attributes}, @var{arg_idx})
## @deftypefnx {} {} validateattributes (@var{A}, @var{classes}, @var{attributes}, @var{func_name})
## @deftypefnx {} {} validateattributes (@var{A}, @var{classes}, @var{attributes}, @var{func_name}, @var{arg_name})
## @deftypefnx {} {} validateattributes (@var{A}, @var{classes}, @var{attributes}, @var{func_name}, @var{arg_name}, @var{arg_idx})
## Check validity of input argument.
##
## Confirms that the argument @var{A} is valid by belonging to one of
## @var{classes}, and holding all of the @var{attributes}.  If it does not,
## an error is thrown, with a message formatted accordingly.  The error
## message can be made further complete by the function name @var{fun_name},
## the argument name @var{arg_name}, and its position in the input
## @var{arg_idx}.
##
## @var{classes} must be a cell array of strings (an empty cell array is
## allowed) with the name of classes (remember that a class name is case
## sensitive).  In addition to the class name, the following categories
## names are also valid:
##
## @table @asis
## @item @qcode{"float"}
## Floating point value comprising classes @qcode{"double"} and
## @qcode{"single"}.
##
## @item @qcode{"integer"}
## Integer value comprising classes (u)int8, (u)int16, (u)int32, (u)int64.
##
## @item @qcode{"numeric"}
## Numeric value comprising either a floating point or integer value.
##
## @end table
##
## @var{attributes} must be a cell array with names of checks for @var{A}.
## Some of them require an additional value to be supplied right after the
## name (see details for each below).
##
## @table @asis
## @item @qcode{"<="}
## All values are less than or equal to the following value in
## @var{attributes}.
##
## @item @qcode{"<"}
## All values are less than the following value in @var{attributes}.
##
## @item @qcode{">="}
## All values are greater than or equal to the following value in
## @var{attributes}.
##
## @item @qcode{">"}
## All values are greater than the following value in @var{attributes}.
##
## @item @qcode{"2d"}
## A 2-dimensional matrix.  Note that vectors and empty matrices have
## 2 dimensions, one of them being of length 1, or both length 0.
##
## @item @qcode{"3d"}
## Has no more than 3 dimensions.  A 2-dimensional matrix is a 3-D matrix
## whose 3rd dimension is of length 1.
##
## @item @qcode{"binary"}
## All values are either 1 or 0.
##
## @item @qcode{"column"}
## Values are arranged in a single column.
##
## @item @qcode{"decreasing"}
## No value is @var{NaN}, and each is less than the preceding one.
##
## @item @qcode{"diag"}
## Value is a diagonal matrix.
##
## @item @qcode{"even"}
## All values are even numbers.
##
## @item @qcode{"finite"}
## All values are finite.
##
## @item @qcode{"increasing"}
## No value is @var{NaN}, and each is greater than the preceding one.
##
## @item @qcode{"integer"}
## All values are integer.  This is different than using @code{isinteger}
## which only checks its an integer type.  This checks that each value in
## @var{A} is an integer value, i.e., it has no decimal part.
##
## @item @qcode{"ncols"}
## Has exactly as many columns as the next value in @var{attributes}.
##
## @item @qcode{"ndims"}
## Has exactly as many dimensions as the next value in @var{attributes}.
##
## @item @qcode{"nondecreasing"}
## No value is @var{NaN}, and each is greater than or equal to the preceding
## one.
##
## @item @qcode{"nonempty"}
## It is not empty.
##
## @item @qcode{"nonincreasing"}
## No value is @var{NaN}, and each is less than or equal to the preceding one.
##
## @item @qcode{"nonnan"}
## No value is a @code{NaN}.
##
## @item @nospell{@qcode{"nonnegative"}}
## All values are non negative.
##
## @item @qcode{"nonsparse"}
## It is not a sparse matrix.
##
## @item @qcode{"nonzero"}
## No value is zero.
##
## @item @qcode{"nrows"}
## Has exactly as many rows as the next value in @var{attributes}.
##
## @item @qcode{"numel"}
## Has exactly as many elements as the next value in @var{attributes}.
##
## @item @qcode{"odd"}
## All values are odd numbers.
##
## @item @qcode{"positive"}
## All values are positive.
##
## @item @qcode{"real"}
## It is a non-complex matrix.
##
## @item @qcode{"row"}
## Values are arranged in a single row.
##
## @item @qcode{"scalar"}
## It is a scalar.
##
## @item @qcode{"size"}
## Its size has length equal to the values of the next in @var{attributes}.
## The next value must is an array with the length for each dimension.  To
## ignore the check for a certain dimension, the value of @code{NaN} can be
## used.
##
## @item @qcode{"square"}
## Is a square matrix.
##
## @item @qcode{"vector"}
## Values are arranged in a single vector (column or vector).
##
## @end table
##
## @seealso{isa, validatestring, inputParser}
## @end deftypefn

function validateattributes (A, cls, attr, varargin)

  if (nargin < 3 || nargin > 6)
    print_usage ();
  elseif (! iscellstr (cls))
    error ("Octave:invalid-type",
           "validateattributes: CLASSES must be a cell array of strings");
  elseif (! iscell (attr))
    error ("Octave:invalid-type",
           "validateattributes: ATTRIBUTES must be a cell array");
  endif

  ## Built start of error message from the extra optional arguments
  func_name = "";
  var_name  = "input";
  if (nargin > 3)
    fourth = varargin{1};
    if (ischar (fourth))
      func_name = [fourth ": "];
    elseif (nargin == 4 && valid_arg_idx (fourth))
      var_name = sprintf ("input %d", fourth);
    else
      error ("Octave:invalid-input-arg",
             "validateattributes: 4th input argument must be ARG_IDX or FUNC_NAME");
    endif

    if (nargin > 4)
      var_name = varargin{2};
      if (! ischar (var_name))
        error ("Octave:invalid-type",
               "validateattributes: VAR_NAME must be a string");
      endif

      if (nargin > 5)
        arg_idx = varargin{3};
        if (! valid_arg_idx (arg_idx))
          error ("Octave:invalid-input-arg",
                 "validateattributes: ARG_IDX must be a positive integer");
        endif
        var_name = sprintf ("%s (argument #%i)", var_name, arg_idx);
      endif
    endif
  endif
  err_ini = [func_name var_name];

  check_cl = isa (A, cls);
  if (! isempty (check_cl) && ! any (check_cl))
    ## Allowing for an empty list of classes is Matlab incompatible but
    ## that should count as a just a Matlab bug, not an incompatibility.

    ## Replace the category names with the classes that belong to it.
    integer = { "int8"  "int16"  "int32"  "int64" ...
               "uint8" "uint16" "uint32" "uint64"};
    float   = {"single" "double"};
    numeric = {integer{:} float{:}};
    cls = replace_cl_group (cls, "integer", integer);
    cls = replace_cl_group (cls, "float",   float  );
    cls = replace_cl_group (cls, "numeric", numeric);
    cls = unique (cls);

    classes = sprintf (" %s", cls{:});
    error ("Octave:invalid-type",
           "%s must be of class:\n\n %s\n\nbut was of class %s",
           err_ini, classes, class (A));
  endif

  ## We use a while loop because some attributes require the following value
  ## in the cell array.  Also, we can't just get the boolean value for the
  ## test and check at the end the error message since some of the tests
  ## require some more complex error message.

  ## It may look like that we don't perform enough input check in this
  ## function (e.g., we don't check if there's a value after the size
  ## attribute).  The reasoning is that this will be a function mostly used
  ## by developers with fairly static input so any problem would be caught
  ## immediately during that function development, it's no dependent on the
  ## final user input.  In addition, it can be called so many times at the
  ## start of every function, we want it to run specially fast.
  idx = 1;
  problem = false; # becomes true when one of the tests fails
  while (idx <= numel (attr))
    ## FIXME: once we use this in Octave core, it might be worthy to find
    ## which attributes are checked more often, and place them in that
    ## order inside the switch block.
    switch (tolower (attr{idx++}))
      case "2d",
        problem = ndims (A) != 2;
        err_id = "Octave:expected-2d";
      case "3d",
        problem = ndims (A) > 3;
        err_id = "Octave:expected-3d";
      case "column",
        problem = ! iscolumn (A);
        err_id = "Octave:expected-column";
      case "row",
        problem = ! isrow (A);
        err_id = "Octave:expected-row";
      case "scalar",
        problem = ! isscalar (A);
        err_id = "Octave:expected-scalar";
      case "vector",
        problem = ! isvector (A);
        err_id = "Octave:expected-vector";
      case "square",
        problem = ! issquare (A);
        err_id = "Octave:expected-square";
      case "diag",
        problem = ! isdiag (A);
        err_id = "Octave:expected-diag";
      case "nonempty",
        problem = isempty (A);
        err_id = "Octave:expected-nonempty";
      case "nonsparse",
        problem = issparse (A);
        err_id = "Octave:expected-nonsparse";
      case "binary",
        problem = ! islogical (A) && ...
                  any ((A(:) != 1) & (A(:) != 0));
        err_id = "Octave:expected-binary";
      case "even",
        problem = any (rem (A(:), 2) != 0);
        err_id = "Octave:expected-even";
      case "odd",
        problem = any (mod (A(:), 2) != 1);
        err_id = "Octave:expected-odd";
      case "integer",
        problem = ! isinteger (A) && ...
                  any (ceil (A(:)) != A(:));
        err_id = "Octave:expected-integer";
      case "real",
        problem = ! isreal (A);
        err_id = "Octave:expected-real";
      case "finite",
        problem = ! isinteger (A) && ...
                  ! all (isfinite (A(:)));
        err_id = "Octave:expected-finite";
      case "nonnan",
        problem = ! isinteger (A) && ...
                  any (isnan (A(:)));
        err_id = "Octave:expected-nonnan";
      case "nonnegative",
        problem = any (A(:) < 0);
        err_id = "Octave:expected-nonnegative";
      case "nonzero",
        problem = any (A(:) == 0);
        err_id = "Octave:expected-nonzero";
      case "positive",
        problem = any (A(:) <= 0);
        err_id = "Octave:expected-positive";
      case "decreasing",
        problem = (any (isnan (A(:)))
                   || any (diff (A(:)) >= 0));
        err_id = "Octave:expected-decreasing";
      case "increasing",
        problem = (any (isnan (A(:)))
                   || any (diff (A(:)) <= 0));
        err_id = "Octave:expected-increasing";
      case "nondecreasing",
        problem = (any (isnan (A(:)))
                   || any (diff (A(:)) <  0));
        err_id = "Octave:expected-nondecreasing";
      case "nonincreasing",
        problem = (any (isnan (A(:)))
                   || any (diff (A(:)) >  0));
        err_id = "Octave:expected-nonincreasing";
      case "size",
        A_size = size (A);
        w_size = attr{idx++};
        A_size(isnan (w_size)) = NaN;
        if (! isequaln (A_size, w_size))
          A_size_str = sprintf ("%dx", size (A))(1:end-1);
          w_size_str = sprintf ("%ix", w_size)(1:end-1);
          w_size_str = strrep (w_size_str, "NaN", "N");
          err_id = "Octave:incorrect-size";
          error (err_id,
                 "%s must be of size %s but was %s",
                 err_ini, w_size_str, A_size_str);
        endif
      case "numel",
        if (numel (A) != attr{idx++})
          err_id = "Octave:incorrect-numel";
          error (err_id,
                 "%s must have %d elements", err_ini, attr{idx-1});
        endif
      case "ncols",
        if (columns (A) != attr{idx++})
          err_id = "Octave:incorrect-numcols";
          error (err_id,
                 "%s must have %d columns", err_ini, attr{idx-1});
        endif
      case "nrows",
        if (rows (A) != attr{idx++})
          err_id = "Octave:incorrect-numrows";
          error (err_id,
                 "%s must have %d rows", err_ini, attr{idx-1});
        endif
      case "ndims",
        ## Note that a [4 5 1] matrix is not considered to have ndims == 3
        ## but is ok for "3d".  This is not a bug.
        if (ndims (A) != attr{idx++})
          err_id = "Octave:incorrect-numdims";
          error (err_id,
                 "%s must have %d dimensions", err_ini, attr{idx-1});
        endif
      case ">"
        if (! all (A(:) > attr{idx++}))
          err_id = "Octave:expected-greater";
          error (err_id,
                 "%s must be greater than %f", err_ini, attr{idx-1});
        endif
      case ">="
        if (! all (A(:) >= attr{idx++}))
          err_id = "Octave:expected-greater-equal";
          error (err_id,
                 "%s must be greater than or equal to %f", err_ini, attr{idx-1});
        endif
      case "<"
        if (! all (A(:) < attr{idx++}))
          err_id = "Octave:expected-less";
          error (err_id,
                 "%s must be less than %f", err_ini, attr{idx-1});
        endif
      case "<="
        if (! all (A(:) <= attr{idx++}))
          err_id = "Octave:expected-less-equal";
          error (err_id,
                 "%s must be less than or equal to %f", err_ini, attr{idx-1});
        endif
      otherwise
        err_id = "Octave:invalid-input-arg";
        error (err_id,
               "validateattributes: unknown ATTRIBUTE %s", attr{idx-1});
    endswitch
    if (problem)
      error (err_id,
             "%s must be %s", err_ini, attr{idx-1});
    endif
  endwhile

endfunction

function retval = valid_arg_idx (arg)
  retval = isnumeric (arg) && isscalar (arg) && arg > 0 && arg == fix (arg);
endfunction

function cls = replace_cl_group (cls, name, group)
  num_pos = strcmpi (cls, name);
  if (any (num_pos))
    cls(num_pos) = [];
    cls(end+1:end+numel(group)) = group;
  endif
endfunction


%!error <double> validateattributes (rand (5), {"uint8"}, {})
%!error <single> validateattributes (uint8 (rand (5)), {"float"}, {})
%!error <2d> validateattributes (rand (5, 5, 5), {}, {"2d"})
%!error <3d> validateattributes (rand (5, 5, 5, 7), {}, {"3d"})
%!error <column> validateattributes (rand (5, 5), {}, {"column"})
%!error <column> validateattributes (rand (1, 5), {}, {"column"})
%!error <row> validateattributes (rand (5, 5), {}, {"row"})
%!error <row> validateattributes (rand (5, 1), {}, {"row"})
%!error <scalar> validateattributes (rand (1, 5), {}, {"scalar"})
%!error <vector> validateattributes (rand (5), {}, {"vector"})
%!error <square> validateattributes (rand (5, 6), {}, {"square"})
%!error <nonempty> validateattributes ([], {}, {"nonempty"})
%!error <nonsparse> validateattributes (sparse(rand(5)), {}, {"nonsparse"})
%!error <binary> validateattributes ("text", {}, {"binary"})
%!error <binary> validateattributes ([0 1 0 3 0], {}, {"binary"})
%!error <even> validateattributes ([2 3 6 8], {}, {"even"})
%!error <even> validateattributes ([2 NaN], {}, {"even"})
%!error <odd> validateattributes ([3 4 7 5], {}, {"odd"})
%!error <odd> validateattributes ([5 NaN], {}, {"odd"})
%!error <integer> validateattributes ([5 5.2 5.7], {}, {"integer"})
%!error <real> validateattributes ([5i 8 9], {}, {"real"})
%!error <finite> validateattributes ([5i Inf 8], {}, {"finite"})
%!error <nonnan> validateattributes ([NaN Inf 8], {}, {"nonnan"})
%!error <nonnegative> validateattributes ([7 8 -9], {}, {"nonnegative"})
%!error <nonzero> validateattributes ([7 8 0], {}, {"nonzero"})
%!error <positive> validateattributes ([7 0 8], {}, {"positive"})
%!error <decreasing> validateattributes ([7 8 4 3 -5], {}, {"decreasing"})
%!error <decreasing> validateattributes ([7 NaN 4 3 -5], {}, {"decreasing"})
%!error <increasing> validateattributes ([7 8 4 9 20], {}, {"increasing"})
%!error <increasing> validateattributes ([7 8 NaN 9 20], {}, {"increasing"})
%!error <nonincreasing> validateattributes ([7 8 4 9 20], {}, {"nonincreasing"})
%!error <nonincreasing> validateattributes ([7 8 NaN 9 20], {}, {"nonincreasing"})
%!error <nondecreasing> validateattributes ([7 8 4 3 -5], {}, {"nondecreasing"})
%!error <nondecreasing> validateattributes ([7 NaN 4 3 -5], {}, {"nondecreasing"})
%!error <size> validateattributes (ones (5, 3, 6), {}, {"size", [5 4 7]})
%!error <size> validateattributes (ones (5, 3, 6), {}, {"size", [5 NaN 7]})
%!error <size> validateattributes (ones (5, 3, 6), {}, {"size", [5 3 6 2]})
%!error <elements> validateattributes (ones (6, 3), {}, {"numel", 12})
%!error <columns> validateattributes (ones (6, 2), {}, {"ncols", 3})
%!error <rows> validateattributes (ones (6, 2), {}, {"nrows", 3})
%!error <dimensions> validateattributes (ones (6, 2, 6, 3), {}, {"ndims", 3})
%!error <greater than> validateattributes ([6 7 8 5], {}, {">", 5})
%!error <greater than> validateattributes ([6 7 8 5], {}, {">=", 6})
%!error <less than> validateattributes ([6 7 8 5], {}, {"<", 8})
%!error <less than> validateattributes ([6 7 8 5], {}, {"<=", 7})
%!error <diag> validateattributes ([0 0 0; 0 0 0; 1 0 0], {}, {"diag"})
%!error <diag> validateattributes (repmat (eye (3), [1 1 3]), {}, {"diag"})

%!test
%! validateattributes (rand (5), {"numeric"}, {});
%! validateattributes (rand (5), {"float"}, {});
%! validateattributes (rand (5), {"double"}, {});
%! validateattributes ("text", {"char"}, {});
%! validateattributes (rand (5), {}, {"2d"});
%! validateattributes (rand (5), {}, {"3d"});
%! validateattributes (rand (5, 5, 5), {}, {"3d"});
%! validateattributes (rand (5, 1), {}, {"column"});
%! validateattributes (rand (1, 5), {}, {"row"});
%! validateattributes ("a", {}, {"scalar"});
%! validateattributes (5, {}, {"scalar"});
%! validateattributes (rand (1, 5), {}, {"vector"});
%! validateattributes (rand (5, 1), {}, {"vector"});
%! validateattributes (rand (5), {}, {"square"});
%! validateattributes (rand (5), {}, {"nonempty"});
%! validateattributes (rand (5), {}, {"nonsparse"});
%! validateattributes ([0 1 0 1 0], {}, {"binary"});
%! validateattributes (rand (5) > 0.5, {}, {"binary"});
%! validateattributes ([8 4 0 6], {}, {"even"});
%! validateattributes ([-1 3 5], {}, {"odd"});
%! validateattributes ([8 4 0 6], {}, {"real"});
%! validateattributes ([8 4i 0 6], {}, {"finite"});
%! validateattributes (uint8 ([8 4]), {}, {"finite"});
%! validateattributes ([8 Inf], {}, {"nonnan"});
%! validateattributes ([0 7 4], {}, {"nonnegative"});
%! validateattributes ([-8 7 4], {}, {"nonzero"});
%! validateattributes ([8 7 4], {}, {"positive"});
%! validateattributes ([8 7 4 -5], {}, {"decreasing"});
%! validateattributes ([-8 -7 4 5], {}, {"increasing"});
%! validateattributes ([8 4 4 -5], {}, {"nonincreasing"});
%! validateattributes ([-8 -8 4 5], {}, {"nondecreasing"});
%! validateattributes (rand (4, 6, 7, 2), {}, {"size", [4 6 7 2]});
%! validateattributes (rand (4, 6, 7, 2), {}, {"size", [4 NaN 7 2]});
%! validateattributes (rand (4, 6, 7, 2), {}, {"size", [4 6 NaN 2 NaN]});
%! validateattributes (rand (6, 2), {}, {"numel", 12});
%! validateattributes (rand (6, 2), {}, {"ncols", 2});
%! validateattributes (rand (6, 2), {}, {"nrows", 6});
%! validateattributes (rand (6, 2, 4, 5), {}, {"ndims", 4});
%! validateattributes ([4 5 6 7], {}, {">", 3});
%! validateattributes ([4 5 6 7], {}, {">=", 4});
%! validateattributes ([4 5 6 7], {}, {"<", 8});
%! validateattributes ([4 5 6 7], {}, {"<=", 7});
%! validateattributes (eye (3), {}, {"diag"});
%! validateattributes ([1 0 0; 0 1 0; 0 0 1], {}, {"diag"});
%! validateattributes (zeros (3), {}, {"diag"});

%!test
%! validateattributes ([0 1 0 1], {"double", "uint8"}, {"binary", "size", [NaN 4], "nonnan"});

%!test
%! try validateattributes (ones(1,2,3), {"numeric"}, {"2d"});
%! catch id,
%! assert (getfield (id, "identifier"), "Octave:expected-2d");
%! end_try_catch

%!test
%! try validateattributes (ones(1,2,3,4), {"numeric"}, {"3d"});
%! catch id,
%! assert (getfield (id, "identifier"), "Octave:expected-3d");
%! end_try_catch

%!test
%! try validateattributes ([1 2], {"numeric"}, {"column"});
%! catch id,
%! assert (getfield (id, "identifier"), "Octave:expected-column");
%! end_try_catch

%!test
%! try validateattributes ([1 2].', {"numeric"}, {"row"});
%! catch id,
%! assert (getfield (id, "identifier"), "Octave:expected-row");
%! end_try_catch

%!test
%! try validateattributes ([1 2], {"numeric"}, {"scalar"});
%! catch id,
%! assert (getfield (id, "identifier"), "Octave:expected-scalar");
%! end_try_catch

%!test
%! try validateattributes (ones(3), {"numeric"}, {"vector"});
%! catch id,
%! assert (getfield (id, "identifier"), "Octave:expected-vector");
%! end_try_catch

%!test
%! try validateattributes ([1 2], {"numeric"}, {"size", [1 1]});
%! catch id,
%! assert (getfield (id, "identifier"), "Octave:incorrect-size");
%! end_try_catch

%!test
%! try validateattributes (1, {"numeric"}, {"numel", 7});
%! catch id,
%! assert (getfield (id, "identifier"), "Octave:incorrect-numel");
%! end_try_catch

%!test
%! try validateattributes (1, {"numeric"}, {"ncols", 7});
%! catch id,
%! assert (getfield (id, "identifier"), "Octave:incorrect-numcols");
%! end_try_catch

%!test
%! try validateattributes (1, {"numeric"}, {"nrows", 7});
%! catch id,
%! assert (getfield (id, "identifier"), "Octave:incorrect-numrows");
%! end_try_catch

%!test
%! try validateattributes (1, {"numeric"}, {"ndims", 5});
%! catch id,
%! assert (getfield (id, "identifier"), "Octave:incorrect-numdims");
%! end_try_catch

%!test
%! try validateattributes ([1 2], {"numeric"}, {"square"});
%! catch id,
%! assert (getfield (id, "identifier"), "Octave:expected-square");
%! end_try_catch

%!test
%! try validateattributes ([1 2], {"numeric"}, {"diag"});
%! catch id,
%! assert (getfield (id, "identifier"), "Octave:expected-diag");
%! end_try_catch

%!test
%! try validateattributes ([], {"numeric"}, {"nonempty"});
%! catch id,
%! assert (getfield (id, "identifier"), "Octave:expected-nonempty");
%! end_try_catch

%!test
%! try validateattributes (speye(2), {"numeric"}, {"nonsparse"});
%! catch id,
%! assert (getfield (id, "identifier"), "Octave:expected-nonsparse");
%! end_try_catch

%!test
%! try validateattributes (1, {"numeric"}, {">", 3});
%! catch id,
%! assert (getfield (id, "identifier"), "Octave:expected-greater");
%! end_try_catch

%!test
%! try validateattributes (1, {"numeric"}, {">=", 3});
%! catch id,
%! assert (getfield (id, "identifier"), "Octave:expected-greater-equal");
%! end_try_catch

%!test
%! try validateattributes (1, {"numeric"}, {"<", -3});
%! catch id,
%! assert (getfield (id, "identifier"), "Octave:expected-less");
%! end_try_catch

%!test
%! try validateattributes (1, {"numeric"}, {"<=", -3});
%! catch id,
%! assert (getfield (id, "identifier"), "Octave:expected-less-equal");
%! end_try_catch

%!test
%! try validateattributes (3, {"numeric"}, {"binary"});
%! catch id,
%! assert (getfield (id, "identifier"), "Octave:expected-binary");
%! end_try_catch

%!test
%! try validateattributes (1, {"numeric"}, {"even"});
%! catch id,
%! assert (getfield (id, "identifier"), "Octave:expected-even");
%! end_try_catch

%!test
%! try validateattributes (2, {"numeric"}, {"odd"});
%! catch id,
%! assert (getfield (id, "identifier"), "Octave:expected-odd");
%! end_try_catch

%!test
%! try validateattributes (1.1, {"numeric"}, {"integer"});
%! catch id,
%! assert (getfield (id, "identifier"), "Octave:expected-integer");
%! end_try_catch

%!test
%! try validateattributes (1+1i*2, {"numeric"}, {"real"});
%! catch id,
%! assert (getfield (id, "identifier"), "Octave:expected-real");
%! end_try_catch

%!test
%! try validateattributes (Inf, {"numeric"}, {"finite"});
%! catch id,
%! assert (getfield (id, "identifier"), "Octave:expected-finite");
%! end_try_catch

%!test
%! try validateattributes (NaN, {"numeric"}, {"nonnan"});
%! catch id,
%! assert (getfield (id, "identifier"), "Octave:expected-nonnan");
%! end_try_catch

%!test
%! try validateattributes (-1, {"numeric"}, {"nonnegative"});
%! catch id,
%! assert (getfield (id, "identifier"), "Octave:expected-nonnegative");
%! end_try_catch

%!test
%! try validateattributes (0, {"numeric"}, {"nonzero"});
%! catch id,
%! assert (getfield (id, "identifier"), "Octave:expected-nonzero");
%! end_try_catch

%!test
%! try validateattributes (-1, {"numeric"}, {"positive"});
%! catch id,
%! assert (getfield (id, "identifier"), "Octave:expected-positive");
%! end_try_catch

%!test
%! try validateattributes ([1 2], {"numeric"}, {"decreasing"});
%! catch id,
%! assert (getfield (id, "identifier"), "Octave:expected-decreasing");
%! end_try_catch

%!test
%! try validateattributes ([2 1], {"numeric"}, {"increasing"});
%! catch id,
%! assert (getfield (id, "identifier"), "Octave:expected-increasing");
%! end_try_catch

%!test
%! try validateattributes ([1 0], {"numeric"}, {"nondecreasing"});
%! catch id,
%! assert (getfield (id, "identifier"), "Octave:expected-nondecreasing");
%! end_try_catch

%!test
%! try validateattributes ([1 2], {"numeric"}, {"nonincreasing"});
%! catch id,
%! assert (getfield (id, "identifier"), "Octave:expected-nonincreasing");
%! end_try_catch

%!test
%! try validateattributes (@sin, {"numeric"}, {});
%! catch id,
%! assert (getfield (id, "identifier"), "Octave:invalid-type");
%! end_try_catch

%!test
%! try validateattributes (@sin, 1, {});
%! catch id,
%! assert (getfield (id, "identifier"), "Octave:invalid-type");
%! end_try_catch
