<!DOCTYPE html> <!-- webkit-test-runner [ useFlexibleViewport=true AsyncClipboardAPIEnabled=true ] -->
<html>
    <meta charset="utf8">
    <head>
        <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
        <script src="../../resources/js-test.js"></script>
        <script src="../../resources/ui-helper.js"></script>
        <script src="./resources/async-clipboard-helpers.js"></script>
    </head>
    <script>
        jsTestIsAsync = true;

        async function runTest() {
            description("This test verifies that it's still possible to read from the clipboard, after attempting to read data from stale items. Requires DumpRenderTree or WebKitTestRunner.");

            await UIHelper.copyText("Hello");
            itemsBeforeChange = await navigator.clipboard.read();
            shouldBe("itemsBeforeChange.length", "1");

            try {
                const textBlob = await itemsBeforeChange[0].getType("text/plain");
                text = await loadText(textBlob);
                shouldBeEqualToString("text", "Hello");
            } catch (exception) {
                testFailed(`Caught unexpected exception: ${exception.name}`);
            }

            await UIHelper.copyText("World");
            itemsAfterChange = await navigator.clipboard.read();
            shouldBe("itemsAfterChange.length", "1");

            try {
                const textBlob = await itemsBeforeChange[0].getType("text/plain");
                testFailed(`Expected exception when calling getType(). Instead, got Blob(${textBlob.size} bytes)`);
            } catch (exception) {
                testPassed(`Caught expected exception: ${exception.name}`);
            }

            try {
                const textBlob = await itemsAfterChange[0].getType("text/plain");
                text = await loadText(textBlob);
                shouldBeEqualToString("text", "World");
            } catch (exception) {
                testFailed(`Caught unexpected exception: ${exception.name}`);
            }

            finishJSTest();
        }

        addEventListener("load", runTest);
    </script>
    <body></body>
</html>