How to unit test a long function?
조회 수: 1 (최근 30일)
이전 댓글 표시
I have got a long function, which downloads financial data from bloombberg, aggregates, cleans it etc. Now I will have to unit test it. Do I have to create a new function for each main section of the function and then test unit them separetely or does Matlab provide a faster/more elegant method of unit test long functions? Let's show you an example. Let's imagine I have to unit test this function:
function roots=quadraticSolver(a,b,c)
% quadraticSolver returns solutions to the
% quadratic equation a*x^2+b*x+c=0.
if ~isa(a,'numeric') || ~isa(b,'numeric') || ~isa(c,'numeric')
error('quadraticSolver:InputsMustBeNumeric',...
'Coefficients must be...numeric.');
end
roots(1)=(-b+sqrt(b^2-4*a*c)) /(2*a);
roots(2)=(-b-sqrt(b^2-4*a*c)) /(2*a);
end
How to test it in pieces. First the if... part and second the root(x) part. Thank you in advance for your answers.
댓글 수: 1
Stephen23
2018년 10월 26일
"...or does Matlab provide a faster/more elegant method of unit test long functions?"
Not as far as I am aware. Usually to automate function testing I have simply created a large set of test cases for the function, and carefully crafted a test script/function that checks each of them. If you really want unit testing, then you could break up your "long function" into lots of smaller functions, and test each one separately. You might even be able to include the test code in the same Mfile/s. Or, as an alternative, perhaps writing a class might make this easier.
답변 (1개)
madhan ravi
2018년 10월 26일
function roots=quadraticSolver(a,b,c)
% quadraticSolver returns solutions to the
% quadratic equation a*x^2+b*x+c=0.
if ~isa(a,'numeric') || ~isa(b,'numeric') || ~isa(c,'numeric')
error('quadraticSolver:InputsMustBeNumeric',...
'Coefficients must be...numeric.');
else
roots(1)=(-b+sqrt(b^2-4*a*c)) /(2*a);
roots(2)=(-b-sqrt(b^2-4*a*c)) /(2*a);
end
end
댓글 수: 2
madhan ravi
2018년 10월 26일
편집: madhan ravi
2018년 10월 26일
Maybe like the above? First it verifies if condition and passes to next condition when if condition is fails.
참고 항목
카테고리
Help Center 및 File Exchange에서 Creating and Concatenating Matrices에 대해 자세히 알아보기
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!