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_chebpade.m
    path of file: ./repos/chebfun/tests/chebfun
    
    the code of the file until where you have to start completion: % Test for @chebfun/chebpade.m.
% Based on the Chebfun v4 test written by Ricardo Pachon, Feb. 09, 2009.

function pass = test_chebpade(pref)

% Turn off warnings and save the warning state.
warnState = warning('off');

% An example which doesn't require degree-reduction.
dom = [-1, 3];

P = chebfun([ 0.5045; -1.3813; 2.1122; 0.0558; -0.6817], dom, 'coeffs');
Q = chebfun([ 1; 0.1155; -0.8573; -0.2679; 0.5246 ], dom, 'coeffs');
R = P./Q;
[p, q, r] = chebpade(R, 4, 4, 'maehly');
err = norm(P - p) + norm(Q - q);
pass(1) = err < 100*vscale(R)*eps;

% An example which requires degree-reduction.
[p, q, r] = chebpade(P./Q, 6, 5, 'maehly');
err = norm(P - p) + norm(Q - q);
pass(2) = err < 100*vscale(R)*eps;

% An example by Geddes.
a = [-464/6375 ; -742/6375 ; 349/12750 ; 512/6375 ; 13/3400 ; 2129/51000 ; ...
     1333/8160 ; 9703/34000];
b = [-32/85 ; -28/85 ; 1];
f = chebfun(@(x) polyval(a, x)./polyval(b, x));
[p, q, r] = chebpade(f, 7, 2);
pass(3) = norm(f - p./q, inf) < 2e-15;

cp = chebcoeffs(p, length(p));
pass(4) = abs(cp(1) - 17/46) < 1e-13;

% Try non-rational and complex-valued functions.
f = chebfun(@exp);
[p, q, r] = chebpade(f, 2, 3);
[p2, q2, r2] = chebpade(1i*f, 2, 3);
ratio1 = p2(.3)/p(.3);
ratio2 = r2(-.4)/r(-.4);
pass(5) = norm([ratio1 ratio2] - [1i 1i], inf) < 1e-13;

% Try a call
    
function pass = test_chebpade(pref)

% Turn off warnings and save the warning state.
warnState = warning('off');

% An example which doesn't require degree-reduction.
dom = [-1, 3];

P = chebfun([ 0.5045; -1.3813; 2.1122; 0.0558; -0.6817], dom, 'coeffs');
Q = chebfun([ 1; 0.1155; -0.8573; -0.2679; 0.5246 ], dom, 'coeffs');
R = P./Q;
[p, q, r] = chebpade(R, 4, 4, 'maehly');
err = norm(P - p) + norm(Q - q);
pass(1) = err < 100*vscale(R)*eps;

% An example which requires degree-reduction.
[p, q, r] = chebpade(P./Q, 6, 5, 'maehly');
err = norm(P - p) + norm(Q - q);
pass(2) = err < 100*vscale(R)*eps;

% An example by Geddes.
a = [-464/6375 ; -742/6375 ; 349/12750 ; 512/6375 ; 13/3400 ; 2129/51000 ; ...
     1333/8160 ; 9703/34000];
b = [-32/85 ; -28/85 ; 1];
f = chebfun(@(x) polyval(a, x)./polyval(b, x));
[p, q, r] = chebpade(f, 7, 2);
pass(3) = norm(f - p./q, inf) < 2e-15;

cp = chebcoeffs(p, length(p));
pass(4) = abs(cp(1) - 17/46) < 1e-13;

% Try non-rational and complex-valued functions.
f = chebfun(@exp);
[p, q, r] = chebpade(f, 2, 3);
[p2, q2, r2] = chebpade(1i*f, 2, 3);
ratio1 = p2(.3)/p(.3);
ratio2 = r2(-.4)/r(-.4);
pass(5) = norm([ratio1 ratio2] - [1i 1i], inf) < 1e-13;

% Try a call with an explicit number of coefficients in
% the Chebyshev expansion of f.
[p,q,r] = chebpade(f,2,2,10);
pass(6) = norm(f - p./q) < 2e-4;

% Restore the warning state.
warning(warnState);

end