1 ## Copyright (C) 2005-2012 Paul Kienzle
3 ## This file is part of Octave.
5 ## Octave is free software; you can redistribute it and/or modify it
6 ## under the terms of the GNU General Public License as published by
7 ## the Free Software Foundation; either version 3 of the License, or (at
8 ## your option) any later version.
10 ## Octave is distributed in the hope that it will be useful, but
11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 ## General Public License for more details.
15 ## You should have received a copy of the GNU General Public License
16 ## along with Octave; see the file COPYING. If not, see
17 ## <http://www.gnu.org/licenses/>.
20 ## @deftypefn {Command} {} test @var{name}
21 ## @deftypefnx {Command} {} test @var{name} quiet|normal|verbose
22 ## @deftypefnx {Function File} {} test ('@var{name}', 'quiet|normal|verbose', @var{fid})
23 ## @deftypefnx {Function File} {} test ([], 'explain', @var{fid})
24 ## @deftypefnx {Function File} {@var{success} =} test (@dots{})
25 ## @deftypefnx {Function File} {[@var{n}, @var{max}] =} test (@dots{})
26 ## @deftypefnx {Function File} {[@var{code}, @var{idx}] =} test ('@var{name}', 'grabdemo')
28 ## Perform tests from the first file in the loadpath matching @var{name}.
29 ## @code{test} can be called as a command or as a function. Called with
30 ## a single argument @var{name}, the tests are run interactively and stop
31 ## after the first error is encountered.
33 ## With a second argument the tests which are performed and the amount of
34 ## output is selected.
38 ## Don't report all the tests as they happen, just the errors.
41 ## Report all tests as they happen, but don't do tests which require
45 ## Do tests which require user interaction.
48 ## The argument @var{fid} can be used to allow batch processing. Errors
49 ## can be written to the already open file defined by @var{fid}, and
50 ## hopefully when Octave crashes this file will tell you what was happening
51 ## when it did. You can use @code{stdout} if you want to see the results as
52 ## they happen. You can also give a file name rather than an @var{fid}, in
53 ## which case the contents of the file will be replaced with the log from
56 ## Called with a single output argument @var{success}, @code{test} returns
57 ## true if all of the tests were successful. Called with two output arguments
58 ## @var{n} and @var{max}, the number of successful tests and the total number
59 ## of tests in the file @var{name} are returned.
61 ## If the second argument is the string 'grabdemo', the contents of the demo
62 ## blocks are extracted but not executed. Code for all code blocks is
63 ## concatenated and returned as @var{code} with @var{idx} being a vector of
64 ## positions of the ends of the demo blocks.
66 ## If the second argument is 'explain', then @var{name} is ignored and an
67 ## explanation of the line markers used is written to the file @var{fid}.
68 ## @seealso{assert, fail, error, demo, example}
71 ## FIXME: * Consider using keyword fail rather then error? This allows us
72 ## to make a functional form of error blocks, which means we
73 ## can include them in test sections which means that we can use
74 ## octave flow control for both kinds of tests.
76 function [__ret1, __ret2, __ret3, __ret4] = test (__name, __flag, __fid)
77 ## Information from test will be introduced by "key".
78 persistent __signal_fail = "!!!!! ";
79 persistent __signal_empty = "????? ";
80 persistent __signal_block = " ***** ";
81 persistent __signal_file = ">>>>> ";
82 persistent __signal_skip = "----- ";
87 if (nargin < 2 || isempty (__flag))
93 if (nargin < 1 || nargin > 3
94 || (! ischar (__name) && ! isempty (__name)) || ! ischar (__flag))
97 if (isempty (__name) && (nargin != 3 || ! strcmp (__flag, "explain")))
100 __batch = (! isempty (__fid));
102 ## Decide if error messages should be collected.
106 __fid = fopen (__fid, "wt");
108 error ("test: could not open log file");
112 fprintf (__fid, "%sprocessing %s\n", __signal_file, __name);
118 if (strcmp (__flag, "normal"))
122 elseif (strcmp (__flag, "quiet"))
126 elseif (strcmp (__flag, "verbose"))
130 elseif (strcmp (__flag, "grabdemo"))
136 elseif (strcmp (__flag, "explain"))
137 fprintf (__fid, "# %s new test file\n", __signal_file);
138 fprintf (__fid, "# %s no tests in file\n", __signal_empty);
139 fprintf (__fid, "# %s test had an unexpected result\n", __signal_fail);
140 fprintf (__fid, "# %s code for the test\n", __signal_block);
141 fprintf (__fid, "# Search for the unexpected results in the file\n");
142 fprintf (__fid, "# then page back to find the file name which caused it.\n");
143 fprintf (__fid, "# The result may be an unexpected failure (in which\n");
144 fprintf (__fid, "# case an error will be reported) or an unexpected\n");
145 fprintf (__fid, "# success (in which case no error will be reported).\n");
152 error ("test: unknown flag '%s'", __flag);
155 ## Locate the file to test.
156 __file = file_in_loadpath (__name, "all");
157 if (isempty (__file))
158 __file = file_in_loadpath (cstrcat (__name, ".m"), "all");
160 if (isempty (__file))
161 __file = file_in_loadpath (cstrcat (__name, ".cc"), "all");
164 ## If repeats, return first in path.
165 if (isempty (__file))
171 if (isempty (__file))
176 if (exist (__name) == 3)
177 fprintf (__fid, "%s%s source code with tests for dynamically linked function not found\n", __signal_empty, __name);
179 fprintf (__fid, "%s%s does not exist in path\n", __signal_empty, __name);
192 ## Grab the test code from the file.
193 __body = __extract_test_code (__file);
195 if (isempty (__body))
200 fprintf (__fid, "%s%s has no tests available\n", __signal_empty, __file);
211 ## Add a dummy comment block to the end for ease of indexing.
212 if (__body (length(__body)) == "\n")
213 __body = sprintf ("\n%s#", __body);
215 __body = sprintf ("\n%s\n#", __body);
219 ## Chop it up into blocks for evaluation.
220 __lineidx = find (__body == "\n");
221 __blockidx = __lineidx(find (! isspace (__body(__lineidx+1))))+1;
223 ## Ready to start tests ... if in batch mode, tell us what is happening.
225 disp (cstrcat (__signal_file, __file));
228 ## Assume all tests will pass.
231 ## Process each block separately, initially with no shared variables.
232 __tests = __successes = 0;
236 for __i = 1:length(__blockidx)-1
238 ## Extract the block.
239 __block = __body(__blockidx(__i):__blockidx(__i+1)-2);
241 ## Let the user/logfile know what is happening.
243 fprintf (__fid, "%s%s\n", __signal_block, __block);
247 ## Split __block into __type and __code.
248 __idx = find (! isletter (__block));
253 __type = __block(1:__idx(1)-1);
254 __code = __block(__idx(1):length(__block));
257 ## Assume the block will succeed.
263 ## If in __grabdemo mode, then don't process any other block type.
264 ## So that the other block types don't have to worry about
265 ## this __grabdemo mode, the demo block processor grabs all block
266 ## types and skips those which aren't demo blocks.
268 __isdemo = strcmp (__type, "demo");
269 if (__grabdemo || __isdemo)
272 if (__grabdemo && __isdemo)
273 if (isempty(__demo_code))
274 __demo_code = __code;
275 __demo_idx = [1, length(__demo_code)+1];
277 __demo_code = cstrcat(__demo_code, __code);
278 __demo_idx = [__demo_idx, length(__demo_code)+1];
281 elseif (__rundemo && __isdemo)
283 ## process the code in an environment without variables
284 eval (sprintf ("function __test__()\n%s\nendfunction", __code));
286 input ("Press <enter> to continue: ", "s");
289 __msg = sprintf ("%sdemo failed\n%s", __signal_fail, lasterr ());
294 ## Code already processed.
299 elseif (strcmp (__type, "shared"))
302 ## Separate initialization code from variables.
303 __idx = find (__code == "\n");
308 __vars = __code (1:__idx(1)-1);
309 __code = __code (__idx(1):length(__code));
312 ## Strip comments off the variables.
313 __idx = find (__vars == "%" | __vars == "#");
314 if (! isempty (__idx))
315 __vars = __vars(1:__idx(1)-1);
318 ## Assign default values to variables.
320 __vars = deblank (__vars);
321 if (! isempty (__vars))
322 eval (cstrcat (strrep (__vars, ",", "=[];"), "=[];"));
324 __shared_r = cstrcat ("[ ", __vars, "] = ");
330 ## Couldn't declare, so don't initialize.
333 __msg = sprintf ("%sshared variable initialization failed\n",
337 ## Clear shared function definitions.
341 ## Initialization code will be evaluated below.
345 elseif (strcmp (__type, "function"))
348 __name_position = function_name (__block);
349 if (isempty (__name_position))
351 __msg = sprintf ("%stest failed: missing function name\n",
354 __name = __block(__name_position(1):__name_position(2));
357 eval(__code); ## Define the function
358 __clear = sprintf ("%sclear %s;\n", __clear, __name);
361 __msg = sprintf ("%stest failed: syntax error\n%s",
362 __signal_fail, lasterr ());
369 elseif (strcmp (__type, "endfunction"))
370 ## endfunction simply declares the end of a previous function block.
371 ## There is no processing to be done here, just skip to next block.
377 elseif (strcmp (__type, "assert") || strcmp (__type, "fail"))
379 ## Put the keyword back on the code.
381 ## The code will be evaluated below as a test block.
385 elseif (strcmp (__type, "error") || strcmp(__type, "warning"))
387 __warning = strcmp (__type, "warning");
388 [__pattern, __id, __code] = getpattern (__code);
390 __patstr = ["id=",__id];
392 __patstr = ["<",__pattern,">"];
395 eval (sprintf ("function __test__(%s)\n%s\nendfunction",
399 __msg = sprintf ("%stest failed: syntax error\n%s",
400 __signal_fail, lasterr ());
405 __warnstate = warning ("query", "quiet");
406 warning ("on", "quiet");
408 eval (sprintf ("__test__(%s);", __shared));
410 __msg = sprintf ("%sexpected %s but got no error\n",
411 __signal_fail, __patstr);
413 if (! isempty (__id))
414 [~, __err] = lastwarn;
415 __mismatch = ! strcmp (__err, __id);
417 __err = trimerr (lastwarn, "warning");
418 __mismatch = isempty (regexp (__err, __pattern, "once"));
420 warning (__warnstate.state, "quiet");
422 __msg = sprintf ("%sexpected %s but got no warning\n",
423 __signal_fail, __patstr);
425 __msg = sprintf ("%sexpected %s but got %s\n",
426 __signal_fail, __patstr, __err);
433 if (! isempty (__id))
434 [~, __err] = lasterr;
435 __mismatch = ! strcmp (__err, __id);
437 __err = trimerr (lasterr, "error");
438 __mismatch = isempty (regexp (__err, __pattern, "once"));
440 warning (__warnstate.state, "quiet");
442 __msg = sprintf ("%sexpected warning %s but got error %s\n",
443 __signal_fail, __patstr, __err);
445 __msg = sprintf ("%sexpected %s but got %s\n",
446 __signal_fail, __patstr, __err);
453 ## Code already processed.
458 elseif (strcmp (__type, "testif"))
459 __e = regexp (__code, '.$', 'lineanchors', 'once');
460 ## Strip comment any comment from testif line before looking for features
461 __feat_line = strtok (__code(1:__e), '#%');
462 __feat = regexp (__feat_line, '\w+', 'match');
463 __have_feat = strfind (octave_config_info ("DEFS"), __feat);
464 if (any (cellfun ("isempty", __have_feat)))
467 __code = ""; # Skip the code.
468 __msg = sprintf ("%sskipped test\n", __signal_skip);
471 __code = __code(__e + 1 : end);
476 elseif (strcmp (__type, "test") || strcmp (__type, "xtest"))
478 ## Code will be evaluated below.
482 elseif (strcmp (__block(1:1), "#"))
484 __code = ""; # skip the code
491 __msg = sprintf ("%sunknown test type!\n", __signal_fail);
492 __code = ""; # skip the code
495 ## evaluate code for test, shared, and assert.
496 if (! isempty(__code))
498 ## FIXME: need to check for embedded test functions, which cause
499 ## segfaults, until issues with subfunctions in functions are resolved.
500 embed_func = regexp (__code, '^\s*function ', 'once', 'lineanchors');
501 if (isempty (embed_func))
502 eval (sprintf ("function %s__test__(%s)\n%s\nendfunction",
503 __shared_r,__shared, __code));
504 eval (sprintf ("%s__test__(%s);", __shared_r, __shared));
506 error (["Functions embedded in %!test blocks are not allowed.\n", ...
507 "Use the %!function/%!endfunction syntax instead to define shared functions for testing.\n"]);
510 if (strcmp (__type, "xtest"))
511 __msg = sprintf ("%sknown failure\n%s", __signal_fail, lasterr ());
514 __msg = sprintf ("%stest failed\n%s", __signal_fail, lasterr ());
517 if (isempty (lasterr ()))
518 error ("empty error text, probably Ctrl-C --- aborting");
524 ## All done. Remember if we were successful and print any messages.
525 if (! isempty (__msg))
526 ## Make sure the user knows what caused the error.
528 fprintf (__fid, "%s%s\n", __signal_block, __block);
531 fputs (__fid, __msg);
534 ## Show the variable context.
535 if (! strcmp (__type, "error") && ! strcmp (__type, "testif")
536 && ! all (__shared == " "))
537 fputs (__fid, "shared variables ");
538 eval (sprintf ("fdisp(__fid,bundle(%s));", __shared));
544 ## Stop after one error if not in batch mode.
556 __successes += __success * __istest;
561 if (__tests || __xfail || __xskip)
563 printf ("PASSES %d out of %d tests (%d expected failures)\n",
564 __successes, __tests, __xfail);
566 printf ("PASSES %d out of %d tests\n", __successes, __tests);
569 printf ("Skipped %d tests due to missing features\n", __xskip);
572 printf ("%s%s has no tests available\n", __signal_empty, __file);
575 __ret1 = __demo_code;
577 elseif (nargout == 1)
578 __ret1 = __all_success;
580 __ret1 = __successes;
587 ## Create structure with fieldnames the name of the input variables.
588 function s = varstruct (varargin)
590 s.(deblank (argn(i,:))) = varargin{i};
594 ## Find [start,end] of fn in 'function [a,b] = fn'.
595 function pos = function_name (def)
598 ## Find the end of the name.
599 right = find (def == "(", 1);
603 right = find (def(1:right-1) != " ", 1, "last");
605 ## Find the beginning of the name.
606 left = max ([find(def(1:right)==" ", 1, "last"), ...
607 find(def(1:right)=="=", 1, "last")]);
613 ## Return the end points of the name.
617 ## Strip <pattern> from '<pattern> code'.
618 ## Also handles 'id=ID code'
619 function [pattern, id, rest] = getpattern (str)
623 str = trimleft (str);
624 if (! isempty (str) && str(1) == "<")
625 close = index (str, ">");
627 pattern = str(2:close-1);
628 rest = str(close+1:end);
630 elseif (strncmp (str, "id=", 3))
631 [id, rest] = strtok (str(4:end));
635 ## Strip '.*prefix:' from '.*prefix: msg\n' and strip trailing blanks.
636 function msg = trimerr (msg, prefix)
637 idx = index (msg, cstrcat (prefix, ":"));
639 msg(1:idx+length(prefix)) = [];
641 msg = trimleft (deblank (msg));
644 ## Strip leading blanks from string.
645 function str = trimleft (str)
646 idx = find (isspace (str));
647 leading = find (idx == 1:length(idx));
648 if (! isempty (leading))
649 str = str(leading(end)+1:end);
653 ## Make a structure out of the named variables
654 ## (based on Etienne Grossmann's tar function).
655 function s = bundle (varargin)
657 s.(deblank (argn(i,:))) = varargin{i};
661 function body = __extract_test_code (nm)
662 fid = fopen (nm, "rt");
667 if (length (ln) >= 2 && strcmp (ln(1:2), "%!"))
670 body = cstrcat (body, ln(3:end));
678 ### Test for test for missing features
679 %!testif OCTAVE_SOURCE
680 %! ## This test should be run
683 ### Disable this test to avoid spurious skipped test for "make check"
684 % !testif HAVE_FOOBAR
685 % ! ## missing feature. Fail if this test is run
686 % ! error("Failed missing feature test");
688 ### Test for a known failure
689 %!xtest error("This test is known to fail")
691 ### example from toeplitz
693 %! msg1="C must be a vector";
694 %! msg2="C and R must be vectors";
695 %!fail ('toeplitz([])', msg1);
696 %!fail ('toeplitz([1,2;3,4])', msg1);
697 %!fail ('toeplitz([1,2],[])', msg2);
698 %!fail ('toeplitz([1,2],[1,2;3,4])', msg2);
699 %!fail ('toeplitz ([1,2;3,4],[1,2])', msg2);
700 % !fail ('toeplitz','usage: toeplitz'); # usage doesn't generate an error
701 % !fail ('toeplitz(1, 2, 3)', 'usage: toeplitz');
702 %!test assert (toeplitz ([1,2,3], [1,4]), [1,4; 2,1; 3,2]);
703 %!demo toeplitz ([1,2,3,4],[1,5,6])
705 ### example from kron
706 %!#error kron # FIXME suppress these until we can handle output
708 %!test assert (isempty (kron ([], rand(3, 4))))
709 %!test assert (isempty (kron (rand (3, 4), [])))
710 %!test assert (isempty (kron ([], [])))
713 %! A = [1, 2, 3; 4, 5, 6];
714 %! B = [1, -1; 2, -2];
715 %!assert (size (kron (zeros (3, 0), A)), [ 3*rows(A), 0 ])
716 %!assert (size (kron (zeros (0, 3), A)), [ 0, 3*columns(A) ])
717 %!assert (size (kron (A, zeros (3, 0))), [ 3*rows(A), 0 ])
718 %!assert (size (kron (A, zeros (0, 3))), [ 0, 3*columns(A) ])
719 %!assert (kron (pi, e), pi*e)
720 %!assert (kron (pi, A), pi*A)
721 %!assert (kron (A, e), e*A)
722 %!assert (kron ([1, 2, 3], A), [ A, 2*A, 3*A ])
723 %!assert (kron ([1; 2; 3], A), [ A; 2*A; 3*A ])
724 %!assert (kron ([1, 2; 3, 4], A), [ A, 2*A; 3*A, 4*A ])
726 %! res = [1,-1,2,-2,3,-3; 2,-2,4,-4,6,-6; 4,-4,5,-5,6,-6; 8,-8,10,-10,12,-12];
727 %! assert (kron (A, B), res)
729 ### an extended demo from specgram
731 %! ## Speech spectrogram
732 %! [x, Fs] = auload(file_in_loadpath("sample.wav")); # audio file
733 %! step = fix(5*Fs/1000); # one spectral slice every 5 ms
734 %! window = fix(40*Fs/1000); # 40 ms data window
735 %! fftn = 2^nextpow2(window); # next highest power of 2
736 %! [S, f, t] = specgram(x, fftn, Fs, window, window-step);
737 %! S = abs(S(2:fftn*4000/Fs,:)); # magnitude in range 0<f<=4000 Hz.
738 %! S = S/max(max(S)); # normalize magnitude so that max is 0 dB.
739 %! S = max(S, 10^(-40/10)); # clip below -40 dB.
740 %! S = min(S, 10^(-3/10)); # clip above -3 dB.
741 %! imagesc(flipud(20*log10(S)), 1);
742 %! % you should now see a spectrogram in the image window
745 ### now test test itself
747 %!## usage and error testing
748 % !fail ('test','usage.*test') # no args, generates usage()
749 % !fail ('test(1,2,3,4)','usage.*test') # too many args, generates usage()
750 %!fail ('test("test", "bogus")','unknown flag') # incorrect args
751 %!fail ('garbage','garbage.*undefined') # usage on nonexistent function should be
753 %!error test # no args, generates usage()
754 %!error test(1,2,3,4) # too many args, generates usage()
755 %!error <unknown flag> test("test", 'bogus'); # incorrect args, generates error()
756 %!error <garbage' undefined> garbage # usage on nonexistent function should be
758 %!error test("test", 'bogus'); # test without pattern
761 %! lastwarn(); # clear last warning just in case
763 %!warning <warning message> warning('warning message');
765 %!## test of shared variables
766 %!shared a # create a shared variable
767 %!test a=3; # assign to a shared variable
768 %!test assert(a,3) # variable should equal 3
769 %!shared b,c # replace shared variables
770 %!test assert (!exist("a")); # a no longer exists
771 %!test assert (isempty(b)); # variables start off empty
772 %!shared a,b,c # recreate a shared variable
773 %!test assert (isempty(a)); # value is empty even if it had a previous value
774 %!test a=1; b=2; c=3; # give values to all variables
775 %!test assert ([a,b,c],[1,2,3]); # test all of them together
776 %!test c=6; # update a value
777 %!test assert([a, b, c],[1, 2, 6]); # show that the update sticks
778 %!shared # clear all shared variables
779 %!test assert(!exist("a")) # show that they are cleared
780 %!shared a,b,c # support for initializer shorthand
783 %!function x = __test_a(y)
786 %!assert(__test_a(2),4); # Test a test function
788 %!function __test_a (y)
792 %! __test_a(2); # Test a test function with no return value
794 %!function [x,z] = __test_a (y)
798 %!test # Test a test function with multiple returns
799 %! [x,z] = __test_a(3);
803 %!## test of assert block
804 %!assert (isempty([])) # support for test assert shorthand
807 %!demo # multiline demo block
808 %! t=[0:0.01:2*pi]; x=sin(t);
810 %! % you should now see a sine wave in your figure window
811 %!demo a=3 # single line demo blocks work too
813 %!## this is a comment block. it can contain anything.
815 %! it is the "#" as the block type that makes it a comment
816 %! and it stays as a comment even through continuation lines
817 %! which means that it works well with commenting out whole tests
819 % !# failure tests. All the following should fail. These tests should
820 % !# be disabled unless you are developing test() since users don't
821 % !# like to be presented with expected failures. I use % ! to disable.
822 % !test error("---------Failure tests. Use test('test','verbose',1)");
823 % !test assert([a,b,c],[1,3,6]); # variables have wrong values
824 % !bogus # unknown block type
825 % !error toeplitz([1,2,3]); # correct usage
826 % !test syntax errors) # syntax errors fail properly
827 % !shared garbage in # variables must be comma separated
828 % !error syntax++error # error test fails on syntax errors
829 % !error "succeeds."; # error test fails if code succeeds
830 % !error <wrong pattern> error("message") # error pattern must match
831 % !demo with syntax error # syntax errors in demo fail properly
833 % !demo # shared variables not available in demo
834 % ! assert(exist("a"))
836 % ! test('/etc/passwd');
837 % ! test("nonexistent file");
838 % ! ## These don't signal an error, so the test for an error fails. Note
839 % ! ## that the call doesn't reference the current fid (it is unavailable),
840 % ! ## so of course the informational message is not printed in the log.