clipboard_pastefile.html

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<html><body>

<script>

async function checkPaste(event) {

  let result = null;

  try {

    result = await checkPasteHelper(event);

  } catch (e) {

    result = e.toString();

  document.dispatchEvent(new CustomEvent('testresult', {

    detail: { result }

  }));

function is(a, b, msg) {

  if (!Object.is(a, b)) {

    throw new Error(`FAIL: expected ${b} got ${a} - ${msg}`);

async function checkPasteHelper(event) {

  let dt = event.clipboardData;

  is(dt.types.length, 2, "Correct number of types");

  // TODO: Remove application/x-moz-file from content.

  is(dt.types[0], "application/x-moz-file", "First type")

  is(dt.types[1], "Files", "Last type must be Files");

  is(dt.getData("text/plain"), "", "text/plain found with getData");

  is(dt.getData("application/x-moz-file"), "", "application/x-moz-file found with getData");

  is(dt.files.length, 1, "Correct number of files");

  is(dt.files[0].name, "test-file.txt", "Correct file name");

  is(dt.files[0].type, "text/plain", "Correct file type");

  is(dt.items.length, 1, "Correct number of items");

  is(dt.items[0].kind, "file", "Correct item kind");

  is(dt.items[0].type, "text/plain", "Correct item type");

  let file = dt.files[0];

  is(await file.text(), "Hello World!", "Pasted file contains right text");

  return file.name;

</script>

<input id="input" onpaste="checkPaste(event)">

</body></html>