file_support.sub.html

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /IndexedDB/file_support.sub.html - WPT Dashboard Interop Dashboard

<!doctype html>

<meta charset=utf8>

<title>File support in IndexedDB</title>

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

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

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

<script src="/resources/testdriver-vendor.js"></script>

<script src="resources/support-promises.js"></script>

<form id="form">

  <input id="file_input" name="file_input" type="file">

</form>

<script>

function assert_file_metadata_equal(file1, file2) {

  assert_true(file1 instanceof File);

  assert_true(file2 instanceof File)

  assert_equals(file1.lastModified, file2.lastModified);

  assert_equals(file1.name, file2.name);

  assert_equals(file1.size, file2.size);

  assert_equals(file1.type, file2.type);

async function assert_file_contents_equals(file1, file2) {

  const file1_text = await file1.text();

  const file2_text = await file2.text();

  assert_equals(file1_text, file2_text);

promise_test(async (testCase) => {

  const input = document.getElementById("file_input");

  await test_driver.send_keys(input, String.raw`{{fs_path(resources/file_to_save.txt)}}`);

  assert_equals(input.files.length, 1);

  const file = input.files[0];

  const db = await createDatabase(testCase, db => {

    db.createObjectStore('objectStore');

});

  const txn = db.transaction(['objectStore'], 'readwrite');

  txn.objectStore('objectStore').add(file, 'key1');

  txn.objectStore('objectStore').add({file: file, other: 'data'}, 'key2');

  await promiseForTransaction(testCase, txn);

  const readTxn = db.transaction(['objectStore'], 'readonly');

  const fileByItself = await promiseForRequest(

      testCase, readTxn.objectStore('objectStore').get('key1'));

  const fileInDict = await promiseForRequest(

      testCase, readTxn.objectStore('objectStore').get('key2'));

  assert_file_metadata_equal(fileByItself, file);

  assert_file_metadata_equal(fileInDict.file, file);

  assert_file_metadata_equal(fileInDict.file, fileByItself);

  await assert_file_contents_equals(fileByItself, file);

  await assert_file_contents_equals(fileInDict.file, file);

  db.close();

}, "Saves and loads back File objects from IndexedDB");

</script>