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<meta name="timeout" content="long">
<title>img.decode()</title>
<link rel="author" title="Vladimir Levin" href="mailto:vmpstr@chromium.org">
<link rel=help href="">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="log"></div>

<script>
"use strict";

// src tests
// -------------------
promise_test(function() {
  var img = new Image();
  img.src = "/images/green.png";
  return img.decode().then(function(arg) {
    assert_equals(arg, undefined);
  });
}, "(src) PNG image decodes with undefined.");

promise_test(function() {
  var img = new Image();
  img.src = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAIAAA" +
            "D91JpzAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB3RJTUUH4QUSEioKsyAgyw" +
            "AAABl0RVh0Q29tbWVudABDcmVhdGVkIHdpdGggR0lNUFeBDhcAAAAWSURBVA" +
            "jXY9y3bx8DAwPL58+fGRgYACktBRltLfebAAAAAElFTkSuQmCC";
  return img.decode().then(function(arg) {
    assert_equals(arg, undefined);
  });
}, "(src) PNG url image decodes with undefined.");

promise_test(function() {
  var img = new Image();
  img.src = "/images/green.svg";
  return img.decode().then(function(arg) {
    assert_equals(arg, undefined);
  });
}, "(src) SVG image decodes with undefined.");

promise_test(function(t) {
  var img = new Image();
  img.src = "/non/existent/path.png";
  var promise = img.decode();
  return promise_rejects(t, "EncodingError", promise);
}, "(src) Non-existent path fails decode.");

promise_test(function(t) {
  var img = new Image();
  img.src = "data:image/png;base64,iVBO00PDR0BADBEEF00KGg";
  var promise = img.decode();
  return promise_rejects(t, "EncodingError", promise);
}, "(src) Corrupt image fails decode.");

promise_test(function(t) {
  var img = new Image();
  var promise = img.decode();
  return promise_rejects(t, "EncodingError", promise);
}, "(src) Path-less image fails decode.");

promise_test(function() {
  var img = new Image();
  img.src = "/images/green.png";
  var first_promise = img.decode();
  var second_promise = img.decode();
  assert_true(first_promise !== second_promise);
  return Promise.all([
    first_promise,
    second_promise
  ]);
}, "(src) Multiple decodes succeed.");

// srcset tests
// -------------------
promise_test(function() {
  var img = new Image();
  img.srcset = "/images/green.png 100w";
  return img.decode().then(function(arg) {
    assert_equals(arg, undefined);
  });
}, "(srcset) PNG image decodes with undefined.");

promise_test(function() {
  var img = new Image();
  img.srcset = "/images/green.svg 100w";
  return img.decode().then(function(arg) {
    assert_equals(arg, undefined);
  });
}, "(srcset) SVG image decodes with undefined.");

promise_test(function(t) {
  var img = new Image();
  img.srcset = "/non/existent/path.png 100w";
  var promise = img.decode();
  return promise_rejects(t, "EncodingError", promise);
}, "(srcset) Non-existent path fails decode.");

promise_test(function() {
  var img = new Image();
  img.srcset = "/images/green.png 100w";
  var first_promise = img.decode();
  var second_promise = img.decode();
  assert_true(first_promise !== second_promise);
  return Promise.all([
    first_promise,
    second_promise
  ]);
}, "(srcset) Multiple decodes succeed.");

</script>