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<?xml version="1.0"?>
<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css" type="text/css"?>

<window title="Async clipboard APIs Test"
        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
        onload="runTest();">

  <script type="application/javascript"
          src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>
  <script type="application/javascript"
          src="chrome://mochikit/content/tests/SimpleTest/EventUtils.js"/>

<script class="testbody" type="application/javascript">
<![CDATA[

  SimpleTest.waitForExplicitFinish();

  const Services = SpecialPowers.Services;

  const kTextPlainMimeType = "text/plain";

  function clearClipboard() {
    Services.clipboard.emptyClipboard(Services.clipboard.kGlobalClipboard);
  }

  async function testRead() {
    let expected = "x";
    await SimpleTest.promiseClipboardChange(expected, () => {
      SpecialPowers.clipboardCopyString(expected);
    }, kTextPlainMimeType);
    let items = await navigator.clipboard.read();
    is(items.length, 1, "read() read exactly one item");
    const actual = await items[0].getType(kTextPlainMimeType).then(blob => blob.text());
    is(actual, expected, "read() read the right thing");
  }

  async function testWrite() {
    await SimpleTest.promiseClipboardChange("", () => {
      clearClipboard();
    });

    let expected = "x";
    // eslint-disable-next-line no-undef
    let item = new ClipboardItem({[kTextPlainMimeType]: expected});
    await navigator.clipboard.write([item]);
    let actual = SpecialPowers.getClipboardData(kTextPlainMimeType);
    is(actual, expected, "write() wrote the right thing");
  }

  async function testReadText() {
    let expected = "x";
    await SimpleTest.promiseClipboardChange(expected, () => {
      SpecialPowers.clipboardCopyString(expected);
    }, kTextPlainMimeType);
    let actual = await navigator.clipboard.readText();
    is(actual, expected, "readText() read the right thing");
  }

  async function testWriteText() {
    await SimpleTest.promiseClipboardChange("", () => {
      clearClipboard();
    });

    let expected = "x";
    await navigator.clipboard.writeText(expected);
    let actual = SpecialPowers.getClipboardData(kTextPlainMimeType);
    is(actual, expected, "writeText() wrote the right thing");
  }

  async function testNoContentsRead() {
    await SimpleTest.promiseClipboardChange("", () => {
      clearClipboard();
    });

    const items = await navigator.clipboard.read();

    // Bug 1756955: at least on Ubuntu 20.04, clearing the clipboard leads to
    // one item with no types.
    if (!items.length ||
        (items.length == 1 && !items[0].types.length)) {
      ok(true, "read() read the right thing from empty clipboard");
    } else {
      ok(false, "read() read the wrong thing from empty clipboard");
    }
  }

  async function testNoContentsReadText() {
    await SimpleTest.promiseClipboardChange("", () => {
      clearClipboard();
    });
    let actual = await navigator.clipboard.readText();
    is(actual, "", "readText() read the right thing from empty clipboard");
  }

  function runTest() {
    (async function() {
      await SpecialPowers.pushPrefEnv({"set": [
        ["dom.events.asyncClipboard.clipboardItem", true],
      ]});
      await testRead();
      await testReadText();
      await testWrite();
      await testWriteText();

      await testNoContentsRead();
      await testNoContentsReadText();

      SimpleTest.finish();
    })();
  }
  ]]>
</script>

<body xmlns="http://www.w3.org/1999/xhtml">
<p id="display">
</p>
<div id="content" style="display: none">
</div>
<pre id="test">
</pre>
</body>

</window>