function res=expect_eq(tested,expected,err,testName,nrm)
% Test if equals
%
% FUNCTION expect_eq
%
% Author: Rui Yao <ruiyao@ieee.org>
%
% Copyright (C) 2021, UChicago Argonne, LLC. All rights reserved.
%
% OPEN SOURCE LICENSE
% 
% Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
% 
% 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
% 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
% 3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
% 
% 
% ******************************************************************************************************
% DISCLAIMER
% 
% THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
% WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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% 

if nargin<5||isempty(nrm)||nrm<=0||~isinteger(nrm)
    nrm=2;
end

if nargin<4||isempty(testName)||~ischar(testName)
    testName='TEST';
end

if nargin<3||isempty(err)||err<0
    err=1e-8;
end

diff=norm(tested-expected,nrm);

prefix=['[',testName,'] '];

if diff>=err
    warning([prefix,'EXPECT_EQ test FAILED.']);
    res=-1;
else
    disp([prefix,'EXPECT_EQ test OK.']);
    res=1;
end
    
end