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77 lines
2.8 KiB
HTML
77 lines
2.8 KiB
HTML
<!DOCTYPE html>
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<meta charset="utf-8">
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<title>
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Async Clipboard write [image/png ClipboardItem] ->
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read [image/png ClipboardItem] tests
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</title>
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<link rel="help" href="https://w3c.github.io/clipboard-apis/#async-clipboard-api">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<p>
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<p>The bottom image should display the same image as the top image.</p>
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<p>Original Image:</p>
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<image id="image-to-copy" width="20" height="20"
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src="resources/greenbox.png"></image>
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<p>Image after copy/paste:</p>
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<image id="image-on-clipboard"></image>
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<canvas id="canvas" width="20" height="20"></canvas>
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</p>
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<script>
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// Must compare a bitmap as opposed to simply blob data, because an encoded
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// image may have different contents depending on encoder.
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async function getBitmapString(blob) {
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const imageBitmap = await createImageBitmap(blob);
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const canvas = document.getElementById('canvas');
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const ctx = canvas.getContext('2d');
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ctx.drawImage(imageBitmap, 0,0);
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let imageData = ctx.getImageData(0, 0, canvas.width, canvas.height);
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ctx.clearRect(0, 0, canvas.width, canvas.height);
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return imageData.data.toString();
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};
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async function loadBlob(fileName) {
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const fetched = await fetch(fileName);
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return await fetched.blob();
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}
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promise_test(async t => {
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const blobInput = await loadBlob('resources/greenbox.png');
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assert_equals(blobInput.type, 'image/png');
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const clipboardItemInput = new ClipboardItem({'image/png' : blobInput});
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await navigator.clipboard.write([clipboardItemInput]);
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const clipboardItems = await navigator.clipboard.read();
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assert_equals(clipboardItems.length, 1);
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const clipboardItem = clipboardItems[0];
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assert_true(clipboardItem instanceof ClipboardItem);
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assert_equals(clipboardItem.types.length, 1);
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const blobOutput = await clipboardItem.getType('image/png');
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assert_equals(blobOutput.type, 'image/png');
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document.getElementById('image-on-clipboard').src =
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window.URL.createObjectURL(blobOutput);
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const comparableInput = await getBitmapString(blobInput);
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const comparableOutput = await getBitmapString(blobOutput);
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assert_equals(comparableOutput, comparableInput);
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}, 'Verify write and read clipboard [image/png Blob]');
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promise_test(async t => {
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const invalidPngBlob = new Blob(['this text is not a valid png image'],
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{type: "image/png"});
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const clipboardItemInput = new ClipboardItem({'image/png' : invalidPngBlob});
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await promise_rejects(t, "DataError",
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navigator.clipboard.write([clipboardItemInput]));
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}, 'Verify write error on malformed data [image/png ClipboardItem]');
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</script>
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<p>
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Note: This is a manual test because it writes/reads to the shared system
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clipboard and thus cannot be run async with other tests that might interact
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with the clipboard.
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</p>
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