152 lines
4.2 KiB
Matlab
152 lines
4.2 KiB
Matlab
function C = colon(varargin) % --*-- Unitary tests --*--
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% Overloads the colon operator (:). This method can be used to create ranges of dates.
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%
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% INPUTS
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% o A dates object with one element.
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% o d integer scalar, number of periods between each date (default value, if nargin==2, is one)
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% o B dates object with one element.
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%
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% OUTPUTS
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% o C dates object with length(B-A) elements (if d==1).
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%
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% REMARKS
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% B must be greater than A if d>0.
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% Copyright (C) 2013 Dynare Team
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%
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% This file is part of Dynare.
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%
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% Dynare is free software: you can redistribute it and/or modify
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% it under the terms of the GNU General Public License as published by
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% the Free Software Foundation, either version 3 of the License, or
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% (at your option) any later version.
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%
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% Dynare is distributed in the hope that it will be useful,
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% but WITHOUT ANY WARRANTY; without even the implied warranty of
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% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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% GNU General Public License for more details.
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%
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% You should have received a copy of the GNU General Public License
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% along with Dynare. If not, see <http://www.gnu.org/licenses/>.
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if isequal(nargin,2)
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A = varargin{1};
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B = varargin{2};
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d = 1;
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if ~(isa(A,'dates') && isa(B,'dates') && isequal(length(A),1) && isequal(length(B),1))
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error('dates::colon: In an expression like A:B, A and B must be dates objects!')
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end
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elseif isequal(nargin,3)
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A = varargin{1};
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B = varargin{3};
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d = varargin{2};
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if ~(isa(A,'dates') && isa(B,'dates') && isequal(length(A),1) && isequal(length(B),1))
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error('dates::colon: In an expression like A:d:B, A and B must be dates objects and d a scalar integer (number of periods)!')
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end
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if ~(isscalar(d) && isint(d))
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error('dates::colon: In an expression like A:d:B, A and B must be dates objects and d a scalar integer (number of periods)!')
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end
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if isequal(d,0)
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error('dates::colon: In an expression like A:d:B, d (the incremental number of periods) must nonzero!')
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end
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else
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error('dates::colon: Wrong calling sequence! See the manual for the colon (:) operator and dates objects.')
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end
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if ~isequal(A.freq,B.freq)
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error(['dates::colon: Input arguments ' inputname(1) 'and ' inputname(2) ' must have common frequency!'])
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end
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if A>B && d>0
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error(['dates::colon: ' inputname(1) ' must precede ' inputname(2) '!' ])
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end
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if B>A && d<0
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error(['dates::colon: ' inputname(2) ' must precede ' inputname(1) '!' ])
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end
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C = dates();
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n = (B-A)+1;
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C.freq = A.freq;
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C.ndat = n;
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C.time = NaN(n,2);
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C.time(1,:) = A.time;
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current_date = A;
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linee = 1;
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while current_date<B
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linee = linee+1;
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C.time(linee,:) = add_periods_to_array_of_dates(C.time(linee-1,:), C.freq, d);
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current_date = current_date + d;
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end
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C.time = C.time(1:linee,:);
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C.ndat = rows(C.time);
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%@test:1
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%$ % Define two dates
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%$ date_1 = '1950Q2';
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%$ date_2 = '1951Q4';
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%$
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%$ % Define expected results.
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%$ e.freq = 4;
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%$ e.time = [1950 2; 1950 3; 1950 4; 1951 1; 1951 2; 1951 3; 1951 4];
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%$
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%$ % Call the tested routine.
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%$ d1 = dates(date_1);
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%$ d2 = dates(date_2);
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%$ d3 = d1:d2;
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%$
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%$ % Check the results.
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%$ t(1) = dyn_assert(d3.time,e.time);
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%$ t(2) = dyn_assert(d3.freq,e.freq);
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%$ T = all(t);
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%@eof:1
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%@test:2
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%$ % Define expected results.
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%$ e.freq = 4;
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%$ e.time = [1950 2; 1950 3; 1950 4; 1951 1; 1951 2; 1951 3; 1951 4];
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%$
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%$ % Call the tested routine.
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%$ d = dates('1950Q2'):dates('1951Q4');
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%$
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%$ % Check the results.
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%$ t(1) = dyn_assert(d.time,e.time);
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%$ t(2) = dyn_assert(d.freq,e.freq);
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%$ T = all(t);
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%@eof:2
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%@test:3
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%$ % Define expected results.
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%$ e.freq = 4;
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%$ e.time = [1950 2; 1950 4; 1951 2; 1951 4];
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%$
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%$ % Call the tested routine.
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%$ d = dates('1950Q2'):2:dates('1951Q4');
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%$
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%$ % Check the results.
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%$ t(1) = dyn_assert(d.time,e.time);
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%$ t(2) = dyn_assert(d.freq,e.freq);
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%$ T = all(t);
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%@eof:3
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%$ @test:3
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%$ % Create an empty dates object for quaterly data
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%$ qq = dates('Q');
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%$
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%$ % Define expected results.
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%$ e.freq = 4;
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%$ e.time = [1950 2; 1950 3; 1950 4; 1951 1; 1951 2; 1951 3; 1951 4];
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%$
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%$ % Call the tested routine.
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%$ d = qq(1950,2):qq(1951,4);
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%$
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%$ % Check the results.
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%$ t(1) = dyn_assert(d.time,e.time);
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%$ t(2) = dyn_assert(d.freq,e.freq);
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%$ T = all(t);
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%$ @eof:3 |