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60 lines
1.9 KiB
HTML
60 lines
1.9 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 Blob -> read image/png Blob tests
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</title>
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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 input = await loadBlob('resources/greenbox.png');
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assert_equals(input.type, "image/png");
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await navigator.clipboard.write(input);
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const output = await navigator.clipboard.read();
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assert_equals(output.type, "image/png");
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document.getElementById('image-on-clipboard').src =
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window.URL.createObjectURL(output);
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const comparableInput = await getBitmapString(input);
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const comparableOutput = await getBitmapString(output);
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assert_equals(comparableOutput, comparableInput);
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}, "Verify write and read clipboard (DOMString)");
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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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