"5";

let item = document.createElement("div");
item.appendChild(canvas);
item.dataset.expectedWidth = item.dataset.expectedHeight = "50";

let container = document.createElement("div");
container.appendChild(item);

let tests = document.getElementById("tests");

for (let direction of ["row", "column"]) {
  container.className = "container " + direction;
  for (let stretchSize of [false, true]) {
    item.className = "item" + (stretchSize ? " stretch-size" : "");
    for (let flexBasis of ["auto", "content"