datatransferitem-disabled-mode.html

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This test has a WPT meta file that expects 5 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /html/editing/dnd/datastore/datatransferitem-disabled-mode.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta charset="utf-8">

<title>DataTransferItem kind and type in the disabled mode</title>

<link rel="help" href="https://html.spec.whatwg.org/multipage/dnd.html#the-datatransferitem-interface">

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script>

"use strict";

// The kind attribute must return the empty string if the DataTransferItem object

// is in the disabled mode, which it is once the item it represents has been

// removed from the drag data store item list.

test(() => {

  const dt = new DataTransfer();

  const item = dt.items.add("data", "text/plain");

  assert_equals(item.kind, "string", "kind before removal");

  assert_equals(item.type, "text/plain", "type before removal");

  dt.items.remove(0);

  assert_equals(item.kind, "", "kind after removal");

  assert_equals(item.type, "", "type after removal");

}, "remove() puts a string item into the disabled mode");

test(() => {

  const dt = new DataTransfer();

  const item = dt.items.add(new File(["abc"], "test.txt", { type: "text/plain" }));

  assert_equals(item.kind, "file", "kind before removal");

  assert_equals(item.type, "text/plain", "type before removal");

  dt.items.remove(0);

  assert_equals(item.kind, "", "kind after removal");

  assert_equals(item.type, "", "type after removal");

  assert_equals(item.getAsFile(), null, "getAsFile() after removal");

}, "remove() puts a File item into the disabled mode");

test(() => {

  const dt = new DataTransfer();

  const stringItem = dt.items.add("data", "text/plain");

  const fileItem = dt.items.add(new File(["abc"], "test.txt", { type: "image/png" }));

  dt.items.clear();

  assert_equals(stringItem.kind, "", "kind of the cleared string item");

  assert_equals(stringItem.type, "", "type of the cleared string item");

  assert_equals(fileItem.kind, "", "kind of the cleared File item");

  assert_equals(fileItem.type, "", "type of the cleared File item");

}, "clear() puts every item into the disabled mode");

test(() => {

  const dt = new DataTransfer();

  const item = dt.items.add("data", "text/plain");

  dt.clearData("text/plain");

  assert_equals(item.kind, "", "kind after clearData()");

  assert_equals(item.type, "", "type after clearData()");

}, "clearData() puts the removed string item into the disabled mode");

// setData() removes the item whose type string matches before adding the new

// one, so the DataTransferItem representing the old item ends up disabled.

test(() => {

  const dt = new DataTransfer();

  const oldItem = dt.items.add("data", "text/plain");

  dt.setData("text/plain", "other data");

  assert_equals(oldItem.kind, "", "kind of the replaced item");

  assert_equals(oldItem.type, "", "type of the replaced item");

  assert_equals(dt.items.length, 1);

  assert_equals(dt.items[0].kind, "string", "kind of the replacement item");

  assert_equals(dt.items[0].type, "text/plain", "type of the replacement item");

}, "setData() puts the replaced string item into the disabled mode");

</script>