test_embed_sizing.html

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<!DOCTYPE html>

<script src="/tests/SimpleTest/SimpleTest.js"></script>

<link rel="stylesheet" href="/tests/SimpleTest/test.css">

<p>Test intrinsic sizing of embed elements referencing SVG documents, both same

origin and cross origin.</p>

<div id="container" style="width: 500px;"></div>

<script>

const TESTS = [

  { outer: "none", inner: "none", expected: "300x150" },

  { outer: "none", inner: "size", expected: "200x900" },

  { outer: "none", inner: "ratio", expected: "500x2500" },

  { outer: "none", inner: "both", expected: "200x400" },

  { outer: "size", inner: "none", expected: "100x150" },

  { outer: "size", inner: "size", expected: "100x450" },

  { outer: "size", inner: "ratio", expected: "100x500" },

  { outer: "size", inner: "both", expected: "100x200" },

  { outer: "ratio", inner: "none", expected: "500x1500" },

  { outer: "ratio", inner: "size", expected: "200x900" },

  { outer: "ratio", inner: "ratio", expected: "500x1500" },

  { outer: "ratio", inner: "both", expected: "200x400" },

  { outer: "both", inner: "none", expected: "100x300" },

  { outer: "both", inner: "size", expected: "100x300" },

  { outer: "both", inner: "ratio", expected: "100x300" },

  { outer: "both", inner: "both", expected: "100x300" },

];

add_task(async function() {

  for (let test of TESTS) {

    for (let crossorigin of [false, true]) {

      let host = crossorigin ? "http://example.org" : "http://mochi.test:8888";

      let e = document.createElement("embed");

      switch (test.outer) {

        case "none":

          break;

        case "size":

          e.style.width = "100px";

          break;

        case "ratio":

          e.style.aspectRatio = "1 / 3";

          break;

        case "both":

          e.style.width = "100px";

          e.style.aspectRatio = "1 / 3";

          break;

        default:

          throw new Error("unexpected subtest");

      await new Promise(function(resolve) {

        e.src = host + location.pathname.replace("test_embed_sizing.html", `file_embed_sizing_${test.inner}.svg`);

        e.onload = resolve;

        container.append(e);

});

      let desc = `Subtest (${test.outer}/${test.inner}/${crossorigin ? 'cross' : 'same'} origin)`;

      is(`${e.offsetWidth}x${e.offsetHeight}`, test.expected, desc);

      e.remove();

});

</script>