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<!DOCTYPE html>
<meta charset=utf-8>
<title>CrashReportStorage API</title>
<link rel="author" title="Dominic Farolino" href="mailto:dom@chromium.org">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<body>
<script>
'use strict';
// These tests verify the throwing and promise rejection behavior of the
// crashReport API. Each test is run in an iframe to ensure a fresh state.
promise_test(async t => {
const iframe = document.createElement('iframe');
const loadPromise = new Promise(resolve => iframe.onload = resolve);
document.body.appendChild(iframe);
await loadPromise;
const child_window = iframe.contentWindow;
// Detach the document.
iframe.remove();
assert_equals(child_window.crashReport, null, "getter returns null");
}, 'crashReport getter returns null in detached Documents');
promise_test(async t => {
const iframe = document.createElement('iframe');
const loadPromise = new Promise(resolve => iframe.onload = resolve);
document.body.appendChild(iframe);
await loadPromise;
// Cache the iframe's `crashReport` and other important things for the
// following assertions.
const child_window = iframe.contentWindow;
const cachedCrashReport = child_window.crashReport;
const cachedDOMExceptionConstructor = child_window.DOMException;
iframe.remove();
const createRejection = cachedCrashReport.initialize(256);
try {
await createRejection;
assert_unreached('createRejection must reject');
} catch (e) {
// Note that we should be using `promise_rejects_dom` here, but this does
// not reliably work with detached Windows/event loops, so we have to run
// some manual assertions here.
assert_true(e instanceof cachedDOMExceptionConstructor,
"promise rejects with DOMException");
assert_equals(e.code, cachedDOMExceptionConstructor.INVALID_STATE_ERR,
"promise rejects with InvalidStateError specifically");
}
}, 'crashReport initialize() throws InvalidStateError in detached Documents');
promise_test(async t => {
const iframe = document.createElement('iframe');
const loadPromise = new Promise(resolve => iframe.onload = resolve);
document.body.appendChild(iframe);
await loadPromise;
const child_window = iframe.contentWindow;
const cachedCrashReport = child_window.crashReport;
await cachedCrashReport.initialize(256);
assert_throws_dom('InvalidStateError', child_window.DOMException, () => {
// Detach the document.
iframe.remove();
cachedCrashReport.set('key', 'value');
});
}, 'crashReport.set() throws InvalidStateError in detached Documents');
promise_test(async t => {
const iframe = document.createElement('iframe');
const loadPromise = new Promise(resolve => iframe.onload = resolve);
document.body.appendChild(iframe);
await loadPromise;
const child_window = iframe.contentWindow;
const cachedCrashReport = child_window.crashReport;
await cachedCrashReport.initialize(256);
cachedCrashReport.set('key', 'value');
assert_throws_dom('InvalidStateError', child_window.DOMException, () => {
// Detach the document.
iframe.remove();
cachedCrashReport.remove('key', 'value');
});
}, 'crashReport.remove() throws InvalidStateError in detached Documents');
promise_test(async t => {
const iframe = document.createElement('iframe');
const loadPromise = new Promise(resolve => iframe.onload = resolve);
document.body.appendChild(iframe);
t.add_cleanup(() => iframe.remove());
await loadPromise;
const child_window = iframe.contentWindow;
// The maximum allowed size is 5MB.
const large_size = 5 * 1024 * 1024 + 1;
await promise_rejects_dom(t, 'NotAllowedError', child_window.DOMException,
child_window.crashReport.initialize(large_size));
}, 'crashReport.initialize() with size > 5MB rejects with NotAllowedError');
promise_test(async t => {
const iframe = document.createElement('iframe');
const loadPromise = new Promise(resolve => iframe.onload = resolve);
document.body.appendChild(iframe);
t.add_cleanup(() => iframe.remove());
await loadPromise;
const child_window = iframe.contentWindow;
child_window.crashReport.initialize(1024);
await promise_rejects_dom(t, 'InvalidStateError', child_window.DOMException,
child_window.crashReport.initialize(1024));
}, 'Calling crashReport.initialize() a second time throws InvalidStateError');
promise_test(async t => {
const iframe = document.createElement('iframe');
const loadPromise = new Promise(resolve => iframe.onload = resolve);
document.body.appendChild(iframe);
t.add_cleanup(() => iframe.remove());
await loadPromise;
const child_window = iframe.contentWindow;
child_window.crashReport.initialize(1024);
assert_throws_dom('InvalidStateError', child_window.DOMException, () => {
child_window.crashReport.set('key', 'value');
});
}, 'crashReport.set() throws before initialize() resolves');
promise_test(async t => {
const iframe = document.createElement('iframe');
const loadPromise = new Promise(resolve => iframe.onload = resolve);
document.body.appendChild(iframe);
t.add_cleanup(() => iframe.remove());
await loadPromise;
const child_window = iframe.contentWindow;
await child_window.crashReport.initialize(1024);
child_window.crashReport.set('key', 'value');
child_window.crashReport.remove('key');
}, 'crashReport.set() and .remove() succeed after initialize() resolves');
promise_test(async t => {
const iframe = document.createElement('iframe');
const loadPromise = new Promise(resolve => iframe.onload = resolve);
document.body.appendChild(iframe);
t.add_cleanup(() => iframe.remove());
await loadPromise;
const child_window = iframe.contentWindow;
// 8 bytes is too small for the key/value pair "a"/"a" to be written; the
// memory required is 9 bytes, to support the JSONified format:
//
// {"a":"a"}
//
// Similarly, 17 bytes is required for "a"/"a" *and* "b"/"b" to be written, to
// support the format:
//
// {"a":"a","b":"b"}
await child_window.crashReport.initialize(8);
assert_throws_dom('NotAllowedError', child_window.DOMException, () => {
child_window.crashReport.set('a', 'a');
});
// This just fits in our 8-byte buffer though!
child_window.crashReport.set('b', '');
}, 'crashReport.set() throws when there is not enough memory');
promise_test(async t => {
const iframe = document.createElement('iframe');
const loadPromise = new Promise(resolve => iframe.onload = resolve);
document.body.appendChild(iframe);
t.add_cleanup(() => iframe.remove());
await loadPromise;
const child_window = iframe.contentWindow;
await child_window.crashReport.initialize(9);
child_window.crashReport.set('a', 'a');
assert_throws_dom('NotAllowedError', child_window.DOMException, () => {
child_window.crashReport.set('b', 'b');
});
child_window.crashReport.remove('a');
// Now `set()` will work again.
child_window.crashReport.set('b', 'b');
}, 'crashReport.remove() properly frees memory, and allows you to invoke ' +
'set() again, assigning bytes to memory that was previously full');
</script>
</body>
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