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66 lines
2.4 KiB
HTML
66 lines
2.4 KiB
HTML
<!doctype html>
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<meta charset="utf-8">
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<title>FileAPI Test: Creating Blob URL with Blob</title>
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<link rel="author" title="Victor Costan" href="mailto:pwnall@chromium.org">
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<link rel="help" href="https://w3c.github.io/FileAPI/#originOfBlobURL">
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<link rel="help" href="https://html.spec.whatwg.org/multipage/browsers.html#concept-origin">
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<link rel="help" href="https://url.spec.whatwg.org/#url-parsing">
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<link rel="help" href="https://fetch.spec.whatwg.org/#main-fetch">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<style>
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iframe { width: 10px; height: 10px; }
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</style>
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<iframe id="unconstrained-iframe"></iframe>
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<iframe id="sandboxed-iframe" sandbox="allow-scripts"></iframe>
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<script id="iframe-srcdoc" language="text/html">
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<!doctype html>
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<script>
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'use strict';
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window.onload = () => {
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const blob = new Blob(['Hello world!']);
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const blobUrl = URL.createObjectURL(blob);
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fetch(blobUrl).then(response => response.text()).then(text => {
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window.parent.postMessage({ blobUrl, text }, '*');
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});
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};
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// The script tag is closed in readBlobFromUrl().
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</script>
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<script>
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// Carries out the test of minting a Blob URL in an iframe, and reading it back.
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//
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// Returns a promise resolved with an object with properties blobUrl and text
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// (the text read back from the Blob URL).
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function readBlobFromUrl(t, iframeSelector) {
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return new Promise((resolve, reject) => {
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window.onmessage = t.step_func((message) => { resolve(message.data); });
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const frame = document.querySelector(iframeSelector);
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const html = document.querySelector('#iframe-srcdoc').textContent +
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'<' + '/script>';
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frame.setAttribute('srcdoc', html);
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});
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}
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promise_test(t => readBlobFromUrl(t, '#unconstrained-iframe').then(data => {
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assert_true(data.blobUrl.startsWith('blob:'),
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"The Blob's URL should use the blob: scheme");
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assert_equals(data.text, 'Hello world!',
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"The result of reading the Blob's URL should be the Blob's contents");
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}), 'reading a Blob URL in an unconstrained iframe');
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promise_test(t => readBlobFromUrl(t, '#sandboxed-iframe').then(data => {
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assert_true(data.blobUrl.startsWith('blob:'),
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"The Blob's URL should use the blob: scheme");
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assert_equals(data.text, 'Hello world!',
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"The result of reading the Blob's URL should be the Blob's contents");
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}), 'reading a Blob URL in a sandboxed iframe without the same-origin flag');
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</script>
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