chromium/third_party/blink/web_tests/external/wpt/entries-api/filesystem-manual.html

<!DOCTYPE html>
<meta charset=utf-8>
<title>Entries API: FileSystem manual test</title>
<link rel=help href="https://wicg.github.io/entries-api/#api-domfilesystem">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="support.js"></script>

<script>
entry_test((t, entry) => {
  const fs = entry.filesystem;

  assert_idl_attribute(fs, 'name', 'has name attribute');
  assert_equals(typeof fs.name, 'string', 'name is a string');

  assert_idl_attribute(fs, 'root', 'has root attribute');
  assert_true(fs.root.isDirectory,
              'FileSystem root is a directory entry');

  assert_equals(fs.root.name, '', 'root name is empty string');

  assert_equals(fs.root.fullPath, '/', 'root path is /');

  t.done();

}, 'FileSystem - API');

entry_test((t, entry) => {
  const fs = entry.filesystem;

  getChildEntry(entry, 'file.txt', t.step_func(child => {
    const cfs = child.filesystem;
    assert_not_equals(fs, cfs.filesystem, 'FileSystem objects do not have object identity');
    assert_equals(fs.name, cfs.name, 'FileSystem names match');

    t.done();
  }), t.unreached_func('child entry file.txt should be present'));

}, 'FileSystem - name consistency and object identity');
</script>