1function o = ydiff(o) % --*-- Unitary tests --*--
2
3% Computes yearly differences.
4%
5% INPUTS
6% - o   [dseries]
7%
8% OUTPUTS
9% - o   [dseries]
10
11% Copyright (C) 2012-2017 Dynare Team
12%
13% This file is part of Dynare.
14%
15% Dynare is free software: you can redistribute it and/or modify
16% it under the terms of the GNU General Public License as published by
17% the Free Software Foundation, either version 3 of the License, or
18% (at your option) any later version.
19%
20% Dynare is distributed in the hope that it will be useful,
21% but WITHOUT ANY WARRANTY; without even the implied warranty of
22% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
23% GNU General Public License for more details.
24%
25% You should have received a copy of the GNU General Public License
26% along with Dynare.  If not, see <http://www.gnu.org/licenses/>.
27
28o = copy(o);
29o.ydiff_();
30
31%@test:1
32%$ try
33%$     data = transpose(1:100);
34%$     ts = dseries(data,'1950Q1',{'A1'},{'A_1'});
35%$     ds = ts.ydiff();
36%$     t(1) = true;
37%$ catch
38%$     t(1) = false;
39%$ end
40%$
41%$
42%$ if t(1)
43%$     DATA = NaN(4,ts.vobs);
44%$     DATA = [DATA; 4*ones(ts.nobs-4,ts.vobs)];
45%$     t(2) = dassert(ds.data,DATA);
46%$     t(3) = dassert(ds.ops{1},['ydiff(A1)']);
47%$     t(4) = dassert(ts.data, data);
48%$ end
49%$
50%$ T = all(t);
51%@eof:1