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1ca11f861a
Differential Revision: https://phabricator.services.mozilla.com/D69580 --HG-- extra : moz-landing-system : lando
48 lines
1.8 KiB
HTML
48 lines
1.8 KiB
HTML
<!--
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Any copyright is dedicated to the Public Domain.
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http://creativecommons.org/publicdomain/zero/1.0/
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-->
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<html>
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<head>
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<title>File Handle Test</title>
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<script src="/tests/SimpleTest/SimpleTest.js"></script>
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<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
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<script type="text/javascript">
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async function testSteps() {
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const name = window.location.pathname;
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// Test setup begin
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const fileHandle = await createReadWriteFileWithInitialContent(name, getBuffer(1));
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// Test setup end
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// Since TypeError is very generic, we also check the exception message.
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// XXX If we add [EnforceRange] to IDBFileHandle.truncate, this will fail before truncate is called,
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// and since UINT64_MAX is larger than Number.MAX_SAFE_INTEGER, we have no way to reliably test it,
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// probably.
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// XXX This restriction might go away once the use of UINT64_MAX as a special value is removed.
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info("Expecting TypeError on truncating to a negative length that converts to UINT64_MAX implicitly");
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let message = assertThrowsInstanceOf(() => { fileHandle.truncate(-1); }, TypeError);
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is(message, "IDBFileHandle.truncate: UINT64_MAX is not a valid size", "Correct message");
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info ("Attempt to truncate to a size larger than the current size should fail.");
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// XXX Expect a more specific error here?
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await expectingError(fileHandle.truncate(10000000), "UnknownError");
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info("Still the state should be consistent and we should be able to truncate to a valid size after this.");
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// This wasn't always the case, see Bug 1626973
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await expectingSuccess(fileHandle.truncate(0));
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}
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</script>
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<script type="text/javascript" src="file.js"></script>
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<script type="text/javascript" src="helpers.js"></script>
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</head>
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<body onload="runTest();"></body>
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</html>
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