// Add your own test cases here let testNumber = 1; const rightTick = "\u2713"; const wrongTick = "\u2717"; function test(params, expected, method) { try { var output = method(params); } catch(error) { console.error(error.toString()); } let out = ''; if (output == expected) { out = `${rightTick} Test #${testNumber}`; } else { out = `${wrongTick} Test #${testNumber}` + ` Expected [${expected.toString()}]` + ` Your output: [${output}]`; } console.log(out); testNumber++; } test('param', true, param => Boolean(param));