<!doctype html>
<meta charset="utf-8">
<title>FormData: set</title>
<link rel="help" href="https://xhr.spec.whatwg.org/#dom-formdata-set">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="log"></div>
<form id="form" />
<script>
    function test_formdata(creator, verifier, description) {
        async_test(description).step(function() {
            var fd = creator();
            var xhr = new XMLHttpRequest();
            xhr.onload = this.step_func(function() {
                verifier(xhr.responseText);
                this.done();
            });
            xhr.open("POST", "resources/upload.py");
            xhr.send(fd);
        });
    }

    test_formdata(function() {
        var fd = new FormData();
        fd.set("name", new String("value"));
        return fd;
    }, function(data) {
        assert_equals(data, "name=value,\n");
    }, "Passing a String object to FormData.set should work");

    test(function() {
        assert_equals(create_formdata(['key', 'value1']).get('key'), "value1");
    }, 'testFormDataSet1');
    test(function() {
        assert_equals(create_formdata(['key', 'value2'], ['key', 'value1']).get('key'), "value1");
    }, 'testFormDataSet2');
    test(function() {
        assert_equals(create_formdata(['key', undefined]).get('key'), "undefined");
    }, 'testFormDataSetUndefined1');
    test(function() {
        assert_equals(create_formdata(['key', undefined], ['key', 'value1']).get('key'), "value1");
    }, 'testFormDataSetUndefined2');
    test(function() {
        assert_equals(create_formdata(['key', null]).get('key'), "null");
    }, 'testFormDataSetNull1');
    test(function() {
        assert_equals(create_formdata(['key', null], ['key', 'value1']).get('key'), "value1");
    }, 'testFormDataSetNull2');
    test(function() {
        var fd = new FormData(document.getElementById("form"));
        fd.set('key', 'value1');
        assert_equals(fd.get('key'), "value1");
    }, 'testFormDataSetToForm1');
    test(function() {
        var fd = new FormData(document.getElementById("form"));
        fd.set('key', 'value2');
        fd.set('key', 'value1');
        assert_equals(fd.get('key'), "value1");
    }, 'testFormDataSetToForm2');
    test(function() {
        var fd = new FormData(document.getElementById("form"));
        fd.set('key', undefined);
        assert_equals(fd.get('key'), "undefined");
    }, 'testFormDataSetToFormUndefined1');
    test(function() {
        var fd = new FormData(document.getElementById("form"));
        fd.set('key', undefined);
        fd.set('key', 'value1');
        assert_equals(fd.get('key'), "value1");
    }, 'testFormDataSetToFormUndefined2');
    test(function() {
        var fd = new FormData(document.getElementById("form"));
        fd.set('key', null);
        assert_equals(fd.get('key'), "null");
    }, 'testFormDataSetToFormNull1');
    test(function() {
        var fd = new FormData(document.getElementById("form"));
        fd.set('key', null);
        fd.set('key', 'value1');
        assert_equals(fd.get('key'), "value1");
    }, 'testFormDataSetToFormNull2');
    test(function() {
        var fd = new FormData(document.getElementById("form"));
        assert_throws_js(TypeError, () => {fd.set('name', "string", 'filename')});
    }, 'testFormDataSetToFormString');
    test(function() {
        var fd = new FormData(document.getElementById("form"));
        assert_throws_js(TypeError, () => {fd.set('name', new URLSearchParams(), 'filename')});
    }, 'testFormDataSetToFormWrongPlatformObject');
    test(function() {
        var fd = new FormData();
        fd.set('key', new Blob([]), 'blank.txt');
        var file = fd.get('key');

        assert_true(file instanceof File);
        assert_equals(file.name, 'blank.txt');
    }, 'testFormDataSetEmptyBlob');

    function create_formdata() {
        var fd = new FormData();
        for (var i = 0; i < arguments.length; i++) {
            fd.set.apply(fd, arguments[i]);
        };
        return fd;
    }
</script>