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: unconstrained_tests.m
    path of file: ./repos/osqp-matlab/unittests
    
    the code of the file until where you have to start completion: classdef unconstrained_tests < matlab.unittest.TestCase
    %UNCONSTRAINED_TESTS Solve unconstrained quadratic
    
function setup_problem(testCase)
            % Create Problem
            rng(4)
            testCase.n = 30;
            testCase.m = 0;
            testCase.P = sparse(diag(rand(testCase.n, 1))) + 0.2*speye(testCase.n);
            testCase.q = randn(testCase.n, 1);
            testCase.A = [];
            testCase.l = [];
            testCase.u = [];
            
            
            % Setup solver
            testCase.solver = osqp;
            testCase.solver.setup(testCase.P, testCase.q, ...
                testCase.A, testCase.l, testCase.u, 'verbose', 0, 'eps_abs', 1e-05, 'eps_rel', 1e-05);
            
            % Get options
            testCase.options = testCase.solver.current_settings();
            
            % Setup tolerance
            testCase.tol = 1e-04;
            
        end