Use coder.runTest to run a test file. Specify replacement of one MATLAB function with the compiled version. You do not provide the name of the MEX function that contains the compiled version. Therefore, coder.runTest looks for a MEX function that has the default name.

In a local, writable folder, create a MATLAB function, myfun.

function y = myfun(u,v) %#codegen
y = u+v;
end

In the same folder, create a test function, mytest1, that calls myfun.

function mytest1
c = myfun(10,20);
disp(c);
end

Run the test function in MATLAB.

mytest1

    30

Generate a MEX function for myfun.

codegen myfun -args {0,0}

In the current folder, codegen generates a MEX function that has the default name, myfun_mex.

Run coder.runTest. Specify that you want to run the test file mytest1. Specify replacement of myfun with the compiled version in myfun_mex.

coder.runTest('mytest1','myfun')

    30

The results are the same as when you run mytest1 at the MATLAB command line.

Use coder.runTest to run a test file. Specify replacement of two functions with calls to the compiled versions. Specify the MEX function that contains the compiled versions of the functions.

In a local writable folder, create a MATLAB function, myfun1.

function y = myfun1(u) %#codegen
y = u;
end

In the same folder, create another MATLAB function, myfun2.

function y = myfun2(u, v) %#codegen
y = u + v;
end

In the same folder, create a test function that calls myfun1 and myfun2.

function mytest2
c1 = myfun1(10);
disp(c1)
c2 = myfun2(10,20);
disp(c2)
end

Run the test function.

mytest2

    10

    30

Generate a MEX function for myfun1 and myfun2. Use the -o option to specify the name of the generated MEX function.

codegen -o mymex  myfun1 -args {0} myfun2 -args {0,0}

Run coder.runTest. Specify that you want to run mytest2. Specify that you want to replace the calls to myfun1 and myfun2 with calls to the compiled versions in the MEX function mymex.

coder.runTest('mytest2',{'myfun1','myfun2'},'mymex')

    10

    30

The results are the same as when you run mytest2 at the MATLAB command line.

Use coder.runTest to run a test that replaces calls to MATLAB functions in the test with calls to the compiled versions. Specify the file name for the MEX function that contains the compiled versions of the functions.

In a local writable folder, create a MATLAB function, myfun1.

function y = myfun1(u) %#codegen
y = u;
end

In the same folder, create another MATLAB function, myfun2.

function y = myfun2(u, v) %#codegen
y = u + v;
end

In the same folder, create a test function that calls myfun1 and myfun2.

function  mytest2
c1 = myfun1(10);
disp(c1)
c2 = myfun2(10,20);
disp(c2)
end

Run the test.

mytest2

    10

    30

Generate a MEX function for myfun1 and myfun2. Use the -o option to specify the name of the generated MEX function.

codegen -o mymex  myfun1 -args {0} myfun2 -args {0,0}

Run coder.runTest. Specify that you want to run mytest2. Specify that you want to replace calls to functions called by mytest2 with calls to the compiled versions in mymex. Specify the complete MEX file name including the platform-specific extension. Use mexext to get the platform-specific extension.

coder.runTest('mytest2',['mymex.', mexext])

    10

    30

The results are the same as when you run mytest2 at the MATLAB command line.