<!DOCTYPE HTML >
<html >
<head >
<meta charset="utf-8" >
<title >Image srcset mutations</title >
<script src="/tests/SimpleTest/SimpleTest.js" ></script >
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head >
<script type="application/javascript" >
"use strict" ;
window.onload = function() {
// Smoke test, check picture working as expected
const t0 = document.querySelector("#test0 img" );
ok(t0.currentSrc.endsWith("apng" ), `t0: expected pass.apng, got '${t0.currentSrc}' `);
// Test that the apng is selected over bogus types.
const t1 = document.querySelector("#test1 img" );
ok(t1.currentSrc.endsWith("apng" ), `t1: expected pass.apng, got '${t1.currentSrc}' `);
// Test that tree order precedence applies
const t2 = document.querySelector("#test2 img" );
ok(t2.currentSrc.endsWith("apng" ), `t2: expected pass.apng, got '${t2.currentSrc}' `);
// Test that apng doesn't alway win
const t3 = document.querySelector("#test3 img" );
ok(t3.currentSrc.endsWith("apng" ), `t3: expected pass.apng, got '${t3.currentSrc}' `);
// Test dynamically constructed picture, where apng is selected over a bogus
// source or the img src attribute
const pic = document.createElement("picture" );
pic.id = "test4" ;
const t4 = document.createElement("img" );
const bogusSource = document.createElement("source" );
bogusSource.type = "bogus/bogus" ;
bogusSource.srcset = "fail.png" ;
const legitSource = document.createElement("source" );
legitSource.type = "image/apng" ;
legitSource.srcset = "pass.apng" ;
pic.appendChild(bogusSource);
pic.appendChild(legitSource);
pic.appendChild(t4);
t4.src = "fail.png" ;
document.body .appendChild(pic);
t4.onload = ()=>{
ok(t4.currentSrc.endsWith("apng" ), `t4: Expected pass.apng, got '${t4.currentSrc}' `);
SimpleTest.finish();
}
};
SimpleTest.waitForExplicitFinish();
</script >
<body >
<picture id="test0" >
<source >
<img src="pass.apng" >
</picture>
<picture id="test1" >
<source type="bogus/type" srcset="fail.png" >
<source type="image/apng" srcset="pass.apng" >
<source type="image/jpeg" srcset="fail.png" >
<img src="fail-fallback" >
</picture>
<picture id="test2" >
<source type="image/png" srcset="pass.apng" >
<source srcset="fail.png" >
<source type="bogus/type" srcset="fail.png" >
<img src="fail-fallback" >
</picture>
<picture id="test3" >
<source type="image/jpeg" srcset="pass.apng" >
<source type="image/apng" srcset="fail.png" >
<img src="fail-fallback" >
</picture>
</body >
</html >
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