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# Problem 43025. Check if a directory is on the current MATLAB search path

Solution 2888855

Submitted on 29 Aug 2020 by Rafael S.T. Vieira
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### Test Suite

Test Status Code Input and Output
1   Pass
str = '/opt/mlsedu/matlab/R2016b/toolbox/matlab/mss/mlt_rmt_tmw/scoring-engine'; assert(isequal(isonpath(str),true))

2   Pass
str = '/opt/mlsedu/matlab/R2016b/toolbox/matlab/testframework/parallel'; assert(isequal(isonpath(str),true))

3   Pass
str = '/opt/mlsedu/matlab/R2016b/toolbox/shared/imageslib'; assert(isequal(isonpath(str),true))

4   Pass
str = '/opt/mlsedu/matlab/R2016b/help/toolbox/vision/examples'; assert(isequal(isonpath(str),true))

5   Pass
str = '/opt/mlsedu/matlab/R2016b/toolbox/shared/bigdata'; assert(isequal(isonpath(str),true))

6   Pass
str = '/opt/mlsedu/matlab/R2016b/toolbox/matlab/demos'; assert(isequal(isonpath(str),true))

7   Pass
str = '/opt/mlsedu/matlab/R2016b/toolbox/matlab/funfun'; assert(isequal(isonpath(str),true))

8   Pass
str = '/opt/mlsedu/matlab/R2016b/toolbox/matlab/system'; assert(isequal(isonpath(str),true))

9   Pass

10   Pass
str = ''; assert(isequal(isonpath(str),false))

11   Pass
str = '/opt/'; assert(isequal(isonpath(str),false))

12   Pass
str = 'matlab'; assert(isequal(isonpath(str),false))

13   Pass
str = '/matlab/R2016b/toolbox'; assert(isequal(isonpath(str),false))

14   Pass
str = 'not a directory'; assert(isequal(isonpath(str),false))

15   Pass
str = '/opt/mlsedu/matlab/R2016b/toolbox/matlab/timefun/fakedirectory'; assert(isequal(isonpath(str),false))

16   Pass
str = 'blah/blah/blah'; assert(isequal(isonpath(str),false))

17   Pass
str = 'C:\Program Files\MATLAB\R2016a\toolbox\matlab\datafun'; assert(isequal(isonpath(str),false))

18   Pass
str = []; assert(isequal(isonpath(str),false))