You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: test_mat2cell.m
    path of file: ./repos/chebfun/tests/chebfun
    
    the code of the file until where you have to start completion: % Test file for @chebfun/mat2cell.m.

function pass = test_mat2cell(pref)

% Obtain preferences.
if ( nargin == 0 )
    pref = chebfunpref();
end

% Generate a few random points in [-1 1] to use as test values.
seedRNG(7681);
xr = 2 * rand(1000, 1) - 1;

% C
    
function defined on unbounded domain:

% Functions on [-inf b]:

% Set the domain:
dom = [-Inf -3*pi];
domCheck = [-1e6 -3*pi];

% Generate a few random points to use as test values:
x = diff(domCheck) * rand(100, 1) + domCheck(1);

% Array-valued function:
op = @(x) [exp(x) x.*exp(x) (1-exp(x))./x];
opg = @(x) exp(x);
oph = @(x) [x.*exp(x) (1-exp(x))./x];

myfun = {@chebfun, @quasimatrix};

for k = 1:2
    f = myfun{k}(op, dom);
    F = mat2cell(f, 1, [1 2]);
    F1Vals = feval(F{1}, x);
    F2Vals = feval(F{2}, x);
    
    F1Exact = opg(x);
    F2Exact = oph(x);
    err1 = F1Vals - F1Exact;
    err2 = F2Vals - F2Exact;
    
    pass(k,18) = norm([err1; err2(:)], inf) < ...
        1e2*max(eps*get(f,'vscale'));
    
end