gecko-dev/dom/html/test/test_set_input_files.html

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HTML

<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=1384030
-->
<head>
<title>Test for Setting &lt;input type=file&gt;.files </title>
<script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1384030">Mozilla Bug 1384030</a>
<pre id="test">
<script type="application/javascript">
/** Test for Setting <input type=file>.files **/
function runTest()
{
const form = document.createElement("form");
const formInput = document.createElement("input");
formInput.type = "file";
formInput.name = "inputFile";
form.appendChild(formInput);
const input = document.createElement("input");
input.type = "file";
SpecialPowers.wrap(input).mozSetFileArray([
new File(["foo"], "foo"),
new File(["bar"], "bar")
]);
formInput.files = input.files;
const inputFiles = (new FormData(form)).getAll("inputFile");
is(inputFiles.length, 2, "FormData should contain two input files");
is(inputFiles[0].name, "foo", "Input file name should be 'foo'");
is(inputFiles[1].name, "bar", "Input file name should be 'bar'");
is(inputFiles[0], input.files[0],
"Expect the same File object as input file 'foo'");
is(inputFiles[1], input.files[1],
"Expect the same File object as input file 'bar'");
SimpleTest.finish();
}
SimpleTest.waitForExplicitFinish();
window.addEventListener('load', runTest);
</script>
</pre>
</body>
</html>