entries-api/webkitGetAsEntry.html

<!DOCTYPE html>
<meta charset=utf-8>
<title>Entries API: DataTransferItem.webkitGetAsEntry() with script-created DataTransfer</title>
<link rel=help href="https://wicg.github.io/entries-api/#dom-datatransferitem-webkitgetasentry">
<link rel="author" title="Euclid Ye" href="mailto:yezhizhenjiakang@gmail.com">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>

<script>
test(t => {
  const dt = new DataTransfer();
  dt.items.add('hello', 'text/plain');
  const item = dt.items[0];
  assert_equals(item.kind, 'string');
  assert_equals(item.webkitGetAsEntry(), null,
    'webkitGetAsEntry() should return null for non-File items');
}, 'webkitGetAsEntry() returns null for text items');

test(t => {
  const file = new File(['hello world'], 'test.txt', { type: 'text/plain' });
  const dt = new DataTransfer();
  dt.items.add(file);

  const item = dt.items[0];
  assert_equals(item.kind, 'file');

  const entry = item.webkitGetAsEntry();
  assert_not_equals(entry, null);
  assert_true(entry.isFile);
  assert_false(entry.isDirectory);
  assert_equals(entry.name, 'test.txt');
  assert_equals(entry.fullPath, '/test.txt');
  assert_true(entry.filesystem instanceof FileSystem);
  assert_true(entry.filesystem.root.isDirectory);
}, 'webkitGetAsEntry() returns FileSystemFileEntry with correct attributes');

async_test(t => {
  const file = new File(['hello world'], 'test.txt', { type: 'text/plain' });
  const dt = new DataTransfer();
  dt.items.add(file);

  const entry = dt.items[0].webkitGetAsEntry();

  entry.file(
    t.step_func_done(f => {
      assert_class_string(f, 'File');
      assert_equals(f.name, 'test.txt');
      assert_equals(f.size, 11);
    }),
    t.unreached_func('file() should not invoke the error callback')
  );
}, 'FileSystemFileEntry.file() invokes callback with a File');
</script>