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<!doctype html>
<html lang=en>
<meta charset=utf-8>
<title>XMLHttpRequest: Construct and upload FormData</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/html/semantics/forms/form-submission-0/resources/targetted-form.js"></script>
<link rel="help" href="https://xhr.spec.whatwg.org/#interface-formdata" data-tested-assertations="following::P[1]" />
<link rel="help" href="https://xhr.spec.whatwg.org/#dom-formdata" data-tested-assertations=".. following::P[1]" />
<link rel="help" href="https://xhr.spec.whatwg.org/#dom-formdata-append" data-tested-assertations=".. following::UL[1]/LI[1] following::UL[1]/LI[2] following::UL[1]/LI[3]" />
<link rel="help" href="https://xhr.spec.whatwg.org/#dom-XMLHttpRequest-send-FormData" data-tested-assertations="following::DD[1]" />
<link rel="help" href="https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#constructing-the-form-data-set">
<div id="log"></div>
<form id="form">
<input type="hidden" name="key" value="value">
</form>
<script>
function do_test (name, fd, expected) {
var test = async_test(name);
test.step(function() {
var client = new XMLHttpRequest();
client.onreadystatechange = test.step_func(function () {
if (client.readyState !== 4) return;
assert_equals(client.responseText, expected);
test.done();
});
client.open("POST", "resources/upload.py");
client.send(fd);
});
}
function create_formdata () {
var fd = new FormData();
for (var i = 0; i < arguments.length; i++) {
fd.append.apply(fd, arguments[i]);
};
return fd;
}
do_test("empty formdata", new FormData(), '\n');
do_test("formdata with string", create_formdata(['key', 'value']), 'key=value,\n');
do_test("formdata with named string", create_formdata(['key', new Blob(['value'], {type: 'text/plain'}), 'kv.txt']), '\nkey=kv.txt:text/plain:5,');
do_test("formdata from form", new FormData(document.getElementById('form')), 'key=value,\n');
do_test("formdata with blob", create_formdata(['key', new Blob(['value'], {type: 'text/x-value'})]), '\nkey=blob:text/x-value:5,');
do_test("formdata with named blob", create_formdata(['key', new Blob(['value'], {type: 'text/x-value'}), 'blob.txt']), '\nkey=blob.txt:text/x-value:5,');
// If 3rd argument is given and 2nd is not a Blob, formdata.append() should throw
const append_test = async_test('formdata.append() should throw if value is string and file name is given'); // needs to be async just because the others above are
append_test.step(function(){
assert_throws_js(TypeError, function(){
create_formdata('a', 'b', 'c');
});
});
append_test.done();
test(() => {
let form = populateForm('<input name=n1 value=v1>');
let formDataInEvent = null;
form.addEventListener('formdata', e => {
e.formData.append('h1', 'vh1');
formDataInEvent = e.formData;
});
let formData = new FormData(form);
assert_equals(formData.get('h1'), 'vh1');
assert_equals(formData.get('n1'), 'v1');
assert_not_equals(formData, formDataInEvent,
'"formData" attribute should be different from the ' +
'FromData object created by "new"');
formDataInEvent.append('later-key', 'later-value');
assert_false(formData.has('later-key'));
}, 'Newly created FormData contains entries added to "formData" IDL ' +
'attribute of FormDataEvent.');
test(() => {
let form = populateForm('<input name=n11 value=v11>');
let counter = 0;
form.addEventListener('formdata', e => {
++counter;
assert_throws_dom('InvalidStateError', () => { new FormData(e.target) });
});
new FormData(form);
assert_equals(counter, 1);
form.submit();
assert_equals(counter, 2);
}, '|new FormData()| in formdata event handler should throw');
</script>
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