t020.js (235B)
1 actual = ''; 2 expected = '0,0,1,1,2,2,3,3,'; 3 4 { let f = function() { 5 for (let x = 0; x < 4; ++x) { 6 (function() { 7 for (let y = 0; y < 2; ++y) { 8 appendToActual(x); 9 } 10 })() 11 } 12 }; 13 f(0) 14 } 15 16 17 assertEq(actual, expected)