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_linearSystem1.m
    path of file: ./repos/chebfun/tests/chebop
    
    the code of the file until where you have to start completion: function pass = test_linearSystem1(pref)
% A linear CHEBOP test. This test tests a system of coupled ODEs, both with and
% without breakpoints in the domain of the CHEBOP. Problems are solved using

    
function pass = test_linearSystem1(pref)
% A linear CHEBOP test. This test tests a system of coupled ODEs, both with and
% without breakpoints in the domain of the CHEBOP. Problems are solved using
% chebcolloc1, chebcolloc2 and ultraS discretizations.

% Test 2x2 system (sin/cos)
% Toby Driscoll (extend